Consolidate duplicated export and history streaming helpers (#29)

* Consolidate duplicated export and history streaming helpers.

Reduce repeated CLI export plumbing, shared per-symbol SQLite writes, and test mock setup without changing public behavior.

Co-authored-by: Cursor <cursoragent@cursor.com>

* Bump version from 0.7.0 to 0.7.1.

Co-authored-by: Cursor <cursoragent@cursor.com>

---------

Co-authored-by: Cursor <cursoragent@cursor.com>

README.md

@@ -6,6 +6,12 @@ Command-line tool for exporting MetaTrader 5 data to CSV, JSON, Parquet, and SQL
 
 Built on top of [pdmt5](https://github.com/dceoy/pdmt5), a pandas-based data handler for MetaTrader 5.
 
+## Architecture
+
+- **pdmt5** — canonical MT5 client, DataFrame/trading primitives, and MT5 constant parsing (`TIMEFRAME_*`, `COPY_TICKS_*`, order types).
+- **mt5cli** — CLI commands, CSV/JSON/Parquet/SQLite export, SQLite history collection, rate views, and local batch/automation SDK helpers built on pdmt5.
+- **mt5api** — sibling HTTP adapter for remote MT5 access; not a dependency of mt5cli.
+
 ## Features
 
 - **Multi-format export**: CSV, JSON, Parquet, and SQLite3 output formats
@@ -13,6 +19,7 @@ Built on top of [pdmt5](https://github.com/dceoy/pdmt5), a pandas-based data han
 - **Comprehensive data access**: Rates, ticks, account info, symbols, orders, positions, and trading history
 - **Flexible timeframes**: Named timeframes (M1, H1, D1, etc.) and numeric values
 - **Connection management**: Optional credentials, server, and timeout configuration
+- **SQLite rate loading**: Load mt5cli-managed rate tables/views for offline workflows
 
 ## Installation
 
@@ -50,28 +57,33 @@ python -m mt5cli -o account.csv account-info
 
 ## Commands
 
-| Command            | Description                                                                                                  |
+| Command                | Description                                                                                                  |
-| ------------------ | ------------------------------------------------------------------------------------------------------------ |
+| ---------------------- | ------------------------------------------------------------------------------------------------------------ |
-| `rates-from`       | Export rates from a start date                                                                               |
+| `rates-from`           | Export rates from a start date                                                                               |
-| `rates-from-pos`   | Export rates from a start position                                                                           |
+| `rates-from-pos`       | Export rates from a start position                                                                           |
-| `rates-range`      | Export rates for a date range                                                                                |
+| `latest-rates`         | Export latest rates from a start position                                                                    |
-| `ticks-from`       | Export ticks from a start date                                                                               |
+| `rates-range`          | Export rates for a date range                                                                                |
-| `ticks-range`      | Export ticks for a date range                                                                                |
+| `ticks-from`           | Export ticks from a start date                                                                               |
-| `account-info`     | Export account information                                                                                   |
+| `ticks-range`          | Export ticks for a date range                                                                                |
-| `terminal-info`    | Export terminal information                                                                                  |
+| `ticks-recent`         | Export ticks from a recent trailing window                                                                   |
-| `version`          | Export MetaTrader 5 version information                                                                      |
+| `account-info`         | Export account information                                                                                   |
-| `last-error`       | Export the last error information                                                                            |
+| `terminal-info`        | Export terminal information                                                                                  |
-| `symbols`          | Export symbol list                                                                                           |
+| `version`              | Export MetaTrader 5 version information                                                                      |
-| `symbol-info`      | Export symbol details                                                                                        |
+| `last-error`           | Export the last error information                                                                            |
-| `symbol-info-tick` | Export the last tick for a symbol                                                                            |
+| `symbols`              | Export symbol list                                                                                           |
-| `market-book`      | Export market depth (order book)                                                                             |
+| `symbol-info`          | Export symbol details                                                                                        |
-| `orders`           | Export active orders                                                                                         |
+| `symbol-info-tick`     | Export the last tick for a symbol                                                                            |
-| `positions`        | Export open positions                                                                                        |
+| `minimum-margins`      | Export minimum-volume buy and sell margin requirements                                                       |
-| `history-orders`   | Export historical orders                                                                                     |
+| `market-book`          | Export market depth (order book)                                                                             |
-| `history-deals`    | Export historical deals                                                                                      |
+| `orders`               | Export active orders                                                                                         |
-| `order-check`      | Check funds sufficiency for a trade request                                                                  |
+| `positions`            | Export open positions                                                                                        |
-| `order-send`       | Send a trade request to the trade server (`--yes` required)                                                  |
+| `history-orders`       | Export historical orders                                                                                     |
-| `collect-history`  | Bundle rates, ticks, history-orders, and history-deals for one or more symbols into a single SQLite database |
+| `history-deals`        | Export historical deals                                                                                      |
+| `recent-history-deals` | Export historical deals from a recent trailing window                                                        |
+| `mt5-summary`          | Export terminal/account status summary                                                                       |
+| `order-check`          | Check funds sufficiency for a trade request                                                                  |
+| `order-send`           | Send a trade request to the trade server (`--yes` required)                                                  |
+| `collect-history`      | Bundle rates, ticks, history-orders, and history-deals for one or more symbols into a single SQLite database |
 
 Use `order-check` to validate a request payload before running `order-send --yes`.
 
@@ -127,6 +139,31 @@ update_history_with_config(
 - **`update_history`**: incremental append based on existing SQLite `MAX(time)` per symbol (and timeframe for rates); account-level deals use a separate cursor when `include_account_events=True`.
 - **`rates` table**: normalized storage with `symbol` and `timeframe` columns.
 - **Rate compatibility views**: mt5cli manages all `rate_*` views. Naming is `rate_<symbol>__<timeframe>` when a symbol has one timeframe, otherwise `rate_<symbol>__<granularity>_<timeframe>` (for example `rate_EURUSD__M1_1`). Stale `rate_*` views are dropped and recreated when rates change for offline tools such as mteor optimize.
+- **Rate view resolution**: use `resolve_rate_view_name()` / `resolve_rate_view_names()` to map symbols and granularities to existing SQLite compatibility views without creating databases. Both accept `None` (or a missing path) and return deterministic default names unless `require_existing=True`.
+- **Rate view loading**: use `load_rate_data()` / `load_rate_data_from_connection()` to load a SQLite rate table or view into a `DatetimeIndex` DataFrame.
+- **Multi-series rate loading**: use `build_rate_targets()` to build neutral `RateTarget(symbol, timeframe)` pairs, `resolve_rate_tables()` to map them to table/view names (pass `require_existing=True` for strict resolution), and `load_rate_series_from_sqlite()` to load them into a mapping keyed by `(symbol, integer timeframe)`. The loader requires existing managed views unless `explicit_tables` is supplied, and rejects duplicate `(symbol, timeframe)` targets.
+- **Multi-account latest rates**: use `collect_latest_rates_for_accounts()` with `AccountSpec` to read the latest bars for several account groups, merged into a `(symbol, integer timeframe)` mapping. For long-running pollers, `collect_latest_rates_for_accounts_with_retries()` adds bounded exponential backoff that retries only `pdmt5.Mt5TradingError` / `pdmt5.Mt5RuntimeError` and re-raises once `retry_count` is exhausted.
+- **Latest closed bars**: use `collect_latest_closed_rates_for_accounts()` when downstream logic must exclude the still-forming current bar. It fetches `count + 1` bars at `start_pos=0`, drops the last row with `drop_forming_rate_bar()`, and validates each series is non-empty. `collect_latest_closed_rates_by_granularity()` returns the same data keyed by `(symbol, granularity_name)` such as `("EURUSD", "M1")`.
+
+```python
+from mt5cli import AccountSpec, collect_latest_closed_rates_by_granularity
+
+rates = collect_latest_closed_rates_by_granularity(
+    [AccountSpec(symbols=["EURUSD", "GBPUSD"], login=12345)],
+    ["M1", "H1"],
+    count=500,
+    retry_count=3,
+)
+eurusd_m1 = rates["EURUSD", "M1"]  # closed bars only
+```
+
+- **Credential resolution**: use `resolve_account_spec()` / `resolve_account_specs()` to merge explicit override values over `AccountSpec` fields and expand `${ENV_VAR}` placeholders (via `substitute_env_placeholders()`), raising `ValueError` for missing variables. This keeps secrets out of plan/config files without coupling to any strategy code.
+- **Throttled history updates**: use `ThrottledHistoryUpdater` to wrap `update_history()` with a minimum `interval_seconds` between successful runs (monotonic clock). Call `should_update()` / `update(client, symbols)` from an application loop; errors propagate by default, or pass `suppress_errors=True` to swallow recoverable `Mt5*Error`, `sqlite3.Error`, `ValueError`, `OSError`, and MT5 client capability errors for history API methods without advancing the throttle (other `AttributeError` / `TypeError` values always propagate).
+- **Trading session helpers**: use `mt5_trading_session()` for a trading-capable `pdmt5.Mt5TradingClient` that initializes/logs in via `Mt5Config.path` and always shuts down safely. Pair with `detect_position_side()`, `calculate_margin_and_volume()`, and `determine_order_limits()` for generic position and sizing utilities. The read-only `mt5_session()` / `Mt5CliClient` SDK is unchanged.
+- **Granularity-keyed rate loading**: `load_rate_series_by_granularity()` builds targets with `build_rate_targets()`, loads them with `load_rate_series_from_sqlite()`, and returns a mapping keyed by `(symbol | None, granularity_name)` such as `("EURUSD", "M1")` to reduce downstream boilerplate.
+- **MT5 session helper**: use the `mt5_session()` context manager to attach to (or, when `Mt5Config.path` is set, launch) an MT5 terminal, log in, and yield a connected `Mt5CliClient` that shuts down on exit.
+- **SQLite export helpers**: use `export_dataframe_to_sqlite()` for append mode, optional index export, and post-write deduplication by key columns.
+- **Recent ticks and margins**: `recent_ticks()` and `minimum_margins()` SDK helpers (and matching CLI commands) cover common downstream read-only queries.
 
 ## Requirements
 
@@ -134,6 +171,63 @@ update_history_with_config(
 - Windows OS (MetaTrader 5 requirement)
 - MetaTrader 5 platform installed
 
+### Migration note for mteor
+
+Replace local MT5 lifecycle and trading helper code with mt5cli imports:
+
+```python
+# Before (local mteor helpers)
+# with local_mt5_trading_session(config) as client:
+#     side = local_detect_position_side(client, symbol)
+#     sizing = local_calculate_margin_and_volume(client, symbol, unit_ratio, preserved_ratio)
+#     limits = local_determine_order_limits(client, symbol, side, sl_ratio, tp_ratio)
+
+# After (mt5cli shared layer)
+from pdmt5 import Mt5Config
+from mt5cli import (
+    calculate_margin_and_volume,
+    detect_position_side,
+    determine_order_limits,
+    mt5_trading_session,
+)
+
+with mt5_trading_session(
+    Mt5Config(path=terminal_path, login=login), retry_count=2
+) as client:
+    side = detect_position_side(client, symbol)
+    sizing = calculate_margin_and_volume(
+        client, symbol, unit_margin_ratio=0.5, preserved_margin_ratio=0.2
+    )
+    if side is not None:
+        limits = determine_order_limits(
+            client,
+            symbol,
+            side,
+            stop_loss_limit_ratio=0.01,
+            take_profit_limit_ratio=0.02,
+        )
+```
+
+Throttled history updates use a separate read-only session:
+
+```python
+from pdmt5 import Mt5Config, Mt5DataClient
+
+from mt5cli import ThrottledHistoryUpdater
+
+updater = ThrottledHistoryUpdater(
+    output="history.db", interval_seconds=60, suppress_errors=True
+)
+client = Mt5DataClient(config=Mt5Config(login=login))
+client.initialize_and_login_mt5()
+try:
+    updater.update(client, ["EURUSD"])
+finally:
+    client.shutdown()
+```
+
+Read-only collectors can keep using `mt5_session()` and `Mt5CliClient` without changes.
+
 ## Development
 
 ```bash

docs/api/history.md

@@ -129,3 +129,101 @@ when required columns are missing.
 The `update_history` SDK path uses the same base tables and optional
 `cash_events` / `positions_reconstructed` views. It additionally maintains
 `rate_<symbol>__<timeframe>` compatibility views when `create_rate_views=True`.
+
+### Rate view resolution
+
+Downstream tools can resolve mt5cli-managed compatibility view names from an
+existing SQLite history database without creating files or guessing naming
+schemes:
+
+```python
+from pathlib import Path
+
+from mt5cli.history import resolve_rate_view_name, resolve_rate_view_names
+
+# Single symbol and granularity
+view = resolve_rate_view_name(Path("history.db"), "EURUSD", "M1")
+
+# Batch resolution in row-major order
+views = resolve_rate_view_names(
+    Path("history.db"),
+    ["EURUSD", "GBPUSD"],
+    ["M1", "H1"],
+)
+```
+
+Resolution rules:
+
+- Returns `rate_<symbol>__<timeframe>` when a symbol stores one timeframe.
+- Returns `rate_<symbol>__<granularity>_<timeframe>` when multiple timeframes
+  are stored for the same symbol.
+- When multiple naming candidates apply, prefers an existing managed
+  `rate_*__*` view from the candidate list.
+- Falls back to single-timeframe naming when the database path is missing or
+  `rates` metadata is unavailable.
+- Pass `require_existing=True` to raise `ValueError` instead of returning a
+  best-guess name when the database or view is missing.
+- Accepts either a SQLite path or an open `sqlite3.Connection`.
+
+### Rate data loading
+
+Use `load_rate_data()` to load a table or view from a SQLite path, or
+`load_rate_data_from_connection()` when you already have a connection:
+
+```python
+from pathlib import Path
+
+from mt5cli import load_rate_data
+from mt5cli.history import resolve_rate_view_name
+
+view = resolve_rate_view_name(Path("history.db"), "EURUSD", "M1", require_existing=True)
+rates = load_rate_data(Path("history.db"), view, count=1000)
+```
+
+The loader accepts close-based OHLC rate data or tick-like bid/ask data. It
+validates that `time` exists, parses timestamps with pandas, and returns a
+DataFrame indexed by ascending `DatetimeIndex` named `time`.
+
+### Multi-series rate loading
+
+For loading many rate series at once, build neutral `RateTarget` pairs and load
+them from SQLite in one call. View names are resolved via the same
+compatibility-view rules, or you can pass `explicit_tables` to bypass resolution:
+
+```python
+from pathlib import Path
+
+from mt5cli import build_rate_targets, load_rate_series_from_sqlite
+
+targets = build_rate_targets(["EURUSD", "GBPUSD"], ["M1", "H1"])
+series = load_rate_series_from_sqlite(Path("history.db"), targets, count=1000)
+frame = series["EURUSD", 1]  # keyed by (symbol, integer timeframe)
+```
+
+- `build_rate_targets()` returns `RateTarget(symbol, timeframe)` pairs in
+  row-major order, normalizing timeframe names such as `"M1"` to their integer
+  values; set `allow_missing_symbol=True` to address series solely by
+  `explicit_tables` (targets carry `symbol=None`).
+- `resolve_rate_tables()` maps targets to table or view names and validates that
+  any `explicit_tables` count matches the target count. Pass
+  `require_existing=True` to raise `ValueError` instead of returning a
+  best-guess name when the database or managed view is missing. When
+  `explicit_tables` is provided, names are returned as-is and
+  `require_existing` is ignored.
+- `load_rate_series_from_sqlite()` returns a mapping keyed by
+  `(symbol, integer timeframe)`. Unless `explicit_tables` is supplied, it
+  requires existing managed `rate_*` compatibility views and raises
+  `ValueError` when they are missing. Duplicate `(symbol, timeframe)` targets
+  are rejected.
+- `load_rate_series_by_granularity()` is a thin wrapper that builds the targets,
+  loads the series, and rekeys the result by granularity name to avoid
+  converting integer timeframes downstream:
+
+  ```python
+  from mt5cli import load_rate_series_by_granularity
+
+  series = load_rate_series_by_granularity(
+      "history.db", ["EURUSD"], ["M1", "H1"], count=1000
+  )
+  frame = series["EURUSD", "M1"]  # keyed by (symbol | None, granularity_name)
+  ```

docs/api/index.md

@@ -18,6 +18,10 @@ Utility module providing constants, enums, Click parameter types, and helper fun
 
 Programmatic SDK for read-only MetaTrader 5 data collection. Returns pandas DataFrames and provides `collect_history` for SQLite bulk collection.
 
+### [Trading](trading.md)
+
+Trading-capable session management and operational helpers built on `pdmt5.Mt5TradingClient`. Complements the read-only SDK without changing existing `Mt5CliClient` behavior.
+
 ### [History Collection (SQLite)](history.md)
 
 SQLite storage helpers for the `collect-history` command schema, incremental updates, deduplication, indexes, and optional views.
@@ -28,8 +32,9 @@ The package follows a simple architecture built on top of pdmt5:
 
 1. **CLI Layer** (`cli.py`): Typer application with subcommands that delegate to the SDK and export results.
 2. **SDK Layer** (`sdk.py`): Read-only data access functions, `Mt5CliClient`, and `collect_history` orchestration.
-3. **Utils Layer** (`utils.py`): Constants, enums, custom Click parameter types, parsing helpers, and format detection/export utilities.
+3. **Trading Layer** (`trading.py`): Trading-capable sessions and operational helpers on `Mt5TradingClient`.
-4. **Data Layer** (via `pdmt5`): Uses `Mt5DataClient` and `Mt5Config` from the pdmt5 package for all MetaTrader 5 data access.
+4. **Utils Layer** (`utils.py`): Constants, enums, custom Click parameter types, parsing helpers, and format detection/export utilities.
+5. **Data Layer** (via `pdmt5`): Uses `Mt5DataClient`, `Mt5TradingClient`, and `Mt5Config` from the pdmt5 package for MetaTrader 5 access.
 
 ## Usage Guidelines
 
@@ -65,12 +70,18 @@ from datetime import UTC, datetime
 from pathlib import Path
 
 from mt5cli import (
+    Dataset,
+    IfExists,
     Mt5CliClient,
     collect_history,
     copy_rates_range,
     detect_format,
     export_dataframe,
+    export_dataframe_to_sqlite,
+    minimum_margins,
+    recent_ticks,
 )
+from mt5cli.history import resolve_rate_view_name
 
 # Fetch rates programmatically
 rates = copy_rates_range(
@@ -86,6 +97,20 @@ fmt = detect_format(Path("output.parquet"))  # Returns "parquet"
 # Export a DataFrame
 export_dataframe(rates, Path("output.csv"), "csv")
 
+# Append to SQLite with deduplication
+export_dataframe_to_sqlite(
+    rates,
+    Path("history.db"),
+    "rates",
+    if_exists=IfExists.APPEND,
+    deduplicate_on=("symbol", "timeframe", "time"),
+)
+
+# Resolve rate compatibility views and fetch recent ticks
+view = resolve_rate_view_name(Path("history.db"), "EURUSD", "M1")
+ticks = recent_ticks("EURUSD", seconds=300)
+margins = minimum_margins("EURUSD")
+
 # Collect history into SQLite
 collect_history(
     Path("history.db"),

docs/api/sdk.md

@@ -1,3 +1,114 @@
 # SDK Module
 
 ::: mt5cli.sdk
+
+## Resilient multi-account orchestration
+
+The SDK ships strategy-agnostic helpers for building long-running collectors on
+top of the read-only client. None of them depend on a particular trading
+application.
+
+### Retrying transient rate collection
+
+`collect_latest_rates_for_accounts_with_retries()` wraps
+`collect_latest_rates_for_accounts()` with bounded exponential backoff. Only
+`pdmt5.Mt5TradingError` and `pdmt5.Mt5RuntimeError` are retried; the final
+failure is re-raised once `retry_count` is exhausted.
+
+```python
+from mt5cli import AccountSpec, collect_latest_rates_for_accounts_with_retries
+
+accounts = [AccountSpec(symbols=["EURUSD"], login=12345)]
+rates = collect_latest_rates_for_accounts_with_retries(
+    accounts,
+    ["M1", "H1"],
+    count=500,
+    retry_count=3,
+    backoff_base=2,  # sleeps 2s, 4s, 8s between attempts
+)
+```
+
+### Latest closed rate bars
+
+MetaTrader 5 `start_pos=0` includes the still-forming current bar as the last
+row. `collect_latest_closed_rates_for_accounts()` fetches `count + 1` bars,
+drops that row with `drop_forming_rate_bar()`, and validates each series is
+non-empty. Use `collect_latest_closed_rates_by_granularity()` when callers
+prefer keys such as `("EURUSD", "M1")` instead of integer timeframes.
+
+```python
+from mt5cli import AccountSpec, collect_latest_closed_rates_by_granularity
+
+rates = collect_latest_closed_rates_by_granularity(
+    [AccountSpec(symbols=["EURUSD"], login=12345)],
+    ["M1", "H1"],
+    count=500,
+    retry_count=3,
+)
+closed_m1 = rates["EURUSD", "M1"]
+```
+
+### Resolving credentials and `${ENV_VAR}` placeholders
+
+`resolve_account_spec()` / `resolve_account_specs()` merge explicit override
+values over `AccountSpec` fields and expand `${ENV_VAR}` placeholders, keeping
+secrets out of plan/config files. A missing environment variable raises
+`ValueError`.
+
+```python
+import os
+
+from mt5cli import AccountSpec, resolve_account_specs
+
+os.environ["MT5_LOGIN"] = "12345"
+os.environ["MT5_PASSWORD"] = "secret"
+accounts = [
+    AccountSpec(symbols=["EURUSD"], login="${MT5_LOGIN}", password="${MT5_PASSWORD}")
+]
+
+resolved = resolve_account_specs(accounts, server="Broker-Demo")
+# resolved[0].login == "12345", resolved[0].server == "Broker-Demo"
+```
+
+### Throttled incremental history updates
+
+`ThrottledHistoryUpdater` wraps `update_history()` with a minimum interval
+between successful runs (using a monotonic clock), so an application loop can
+call it every iteration without over-fetching.
+
+```python
+from pdmt5 import Mt5Config, Mt5DataClient
+
+from mt5cli import Dataset, ThrottledHistoryUpdater
+
+updater = ThrottledHistoryUpdater(
+    output="history.db",
+    datasets={Dataset.rates},
+    timeframes=["M1"],
+    interval_seconds=60,  # <= 0 updates on every call
+)
+
+client = Mt5DataClient(config=Mt5Config(login=12345))
+client.initialize_and_login_mt5()
+try:
+    while True:
+        updater.update(client, ["EURUSD", "GBPUSD"])  # no-op until 60s elapse
+        # ... do other work; break when shutting down ...
+finally:
+    client.shutdown()
+```
+
+By default recoverable errors (`Mt5TradingError`, `Mt5RuntimeError`,
+`sqlite3.Error`, `ValueError`, `OSError`, and MT5 client capability
+`AttributeError` / `TypeError` for history API methods) propagate so the caller
+controls logging; pass `suppress_errors=True` to swallow them and return
+`False` without advancing the throttle. Other `AttributeError` / `TypeError`
+values always propagate. Input validation (`_resolve_update_history_request`)
+runs before any MT5 or SQLite calls, but when `suppress_errors=True` the
+resulting `ValueError` is suppressed along with other recoverable errors.
+
+## Trading-capable sessions
+
+For order placement and trading calculations, use the dedicated
+[Trading module](trading.md). The read-only `Mt5CliClient` and `mt5_session()`
+helpers in this module are unchanged.

docs/api/trading.md

@@ -0,0 +1,70 @@
+# Trading Module
+
+::: mt5cli.trading
+
+## Trading-capable MT5 sessions
+
+`mt5_trading_session()` complements the read-only `mt5_session()` helper in
+`sdk.py`. It yields a connected `pdmt5.Mt5TradingClient`, uses
+`Mt5Config.path` to launch the terminal when configured, and always calls
+`shutdown()` on exit.
+
+```python
+from pdmt5 import Mt5Config
+
+from mt5cli import mt5_trading_session
+
+with mt5_trading_session(
+    Mt5Config(path=r"C:\Program Files\MetaTrader 5\terminal64.exe", login=12345),
+    retry_count=2,
+) as client:
+    positions = client.positions_get_as_df(symbol="EURUSD")
+```
+
+The read-only `Mt5CliClient` / `mt5_session()` API is unchanged.
+
+## Operational trading helpers
+
+These helpers are strategy-agnostic and do not depend on signal detection,
+betting logic, or scheduling code in downstream applications.
+
+```python
+from mt5cli import (
+    calculate_margin_and_volume,
+    detect_position_side,
+    determine_order_limits,
+)
+
+side = detect_position_side(client, "EURUSD")
+sizing = calculate_margin_and_volume(
+    client,
+    "EURUSD",
+    unit_margin_ratio=0.5,
+    preserved_margin_ratio=0.2,
+)
+limits = determine_order_limits(
+    client,
+    "EURUSD",
+    side="long",
+    stop_loss_limit_ratio=0.01,
+    take_profit_limit_ratio=0.02,
+)
+```
+
+Protective ratios must satisfy `0 <= ratio < 1`; `0` omits that level.
+`calculate_margin_and_volume()` clamps negative `margin_free` to `0.0`
+before sizing.
+
+## Migration from mteor-local helpers
+
+| mteor-local concern                                      | mt5cli replacement                              |
+| -------------------------------------------------------- | ----------------------------------------------- |
+| Manual terminal spawn/kill around trading code           | `mt5_trading_session()`                         |
+| Local position-side detection                            | `detect_position_side()`                        |
+| Local margin/volume sizing                               | `calculate_margin_and_volume()`                 |
+| Local SL/TP price derivation                             | `determine_order_limits()`                      |
+| Throttled SQLite history loop with ad-hoc error handling | `ThrottledHistoryUpdater(suppress_errors=True)` |
+
+Keep read-only data collection on `mt5_session()` / `Mt5CliClient`; use
+`mt5_trading_session()` only where order placement or trading calculations are
+required.

docs/index.md

@@ -6,6 +6,12 @@ Command-line tool for MetaTrader 5 data export.
 
 mt5cli is a CLI application that exports MetaTrader 5 trading data to multiple file formats. It is built on top of [pdmt5](https://github.com/dceoy/pdmt5), a pandas-based data handler for MetaTrader 5.
 
+## Architecture
+
+- **pdmt5** — canonical MT5 client, DataFrame/trading primitives, and MT5 constant parsing (`TIMEFRAME_*`, `COPY_TICKS_*`, order types).
+- **mt5cli** — CLI commands, CSV/JSON/Parquet/SQLite export, SQLite history collection, rate views, and local batch/automation SDK helpers built on pdmt5.
+- **mt5api** — sibling HTTP adapter for remote MT5 access; not a dependency of mt5cli.
+
 ## Features
 
 - **Multi-format export**: CSV, JSON, Parquet, and SQLite3 output formats
@@ -13,6 +19,7 @@ mt5cli is a CLI application that exports MetaTrader 5 trading data to multiple f
 - **Comprehensive data access**: Rates, ticks, account info, symbols, orders, positions, and trading history
 - **Flexible timeframes**: Named timeframes (M1, H1, D1, etc.) and numeric values
 - **Connection management**: Optional credentials, server, and timeout configuration
+- **SQLite rate loading**: Load mt5cli-managed rate tables/views for offline workflows
 
 ## Installation
 
@@ -22,13 +29,23 @@ pip install mt5cli
 
 ## Programmatic usage / SDK usage
 
-mt5cli can be used as a small Python SDK for read-only MetaTrader 5 data collection. SDK functions return pandas DataFrames without writing files. Use `export_dataframe` when you need to persist results.
+mt5cli can be used as a small Python SDK for read-only MetaTrader 5 data collection. SDK functions return pandas DataFrames without writing files. Use `export_dataframe` or `export_dataframe_to_sqlite` when you need to persist results.
 
 ```python
 from datetime import UTC, datetime
 from pathlib import Path
 
-from mt5cli import Mt5CliClient, collect_history, copy_rates_range, export_dataframe
+from mt5cli import (
+    Mt5CliClient,
+    collect_history,
+    copy_rates_range,
+    export_dataframe,
+    export_dataframe_to_sqlite,
+    load_rate_data,
+    minimum_margins,
+    recent_ticks,
+)
+from mt5cli.history import resolve_rate_view_name
 
 # One-off fetch with module-level helpers
 rates = copy_rates_range(
@@ -39,10 +56,21 @@ rates = copy_rates_range(
 )
 export_dataframe(rates, Path("rates.csv"), "csv")
 
+# Resolve SQLite rate compatibility views for downstream tools
+view = resolve_rate_view_name(Path("history.db"), "EURUSD", "M1", require_existing=True)
+offline_rates = load_rate_data(Path("history.db"), view, count=1000)
+
+# Recent tick window and minimum margin summary
+ticks = recent_ticks("EURUSD", seconds=300)
+margins = minimum_margins("EURUSD")
+
 # Reuse one MT5 connection for multiple calls
 with Mt5CliClient(login=12345, password="secret", server="Broker-Demo") as client:
     account = client.account_info()
     positions = client.positions()
+    latest = client.latest_rates("EURUSD", "M1", count=100)
+    summary = client.mt5_summary()
+    summary_table = client.mt5_summary_as_df()
 
 # Bulk SQLite collection (same behavior as the collect-history CLI command)
 collect_history(
@@ -58,6 +86,8 @@ collect_history(
 
 Timeframes, tick flags, and ISO 8601 date strings are accepted wherever noted in the SDK API.
 
+`Mt5CliClient.mt5_summary()` returns the SDK structured form as plain nested Python values. Use `Mt5CliClient.mt5_summary_as_df()` when you need a one-row DataFrame for export. The `mt5-summary` CLI command uses this tabular form, so nested terminal/account fields are JSON-encoded strings that are safe for CSV, JSON, Parquet, and SQLite output.
+
 ## Quick Start
 
 ```bash
@@ -88,14 +118,16 @@ mt5cli --login 12345 --password mypass --server MyBroker-Demo \
 | ---------------- | ---------------------------------- |
 | `rates-from`     | Export rates from a start date     |
 | `rates-from-pos` | Export rates from a start position |
+| `latest-rates`   | Export latest rates                |
 | `rates-range`    | Export rates for a date range      |
 
 ### Ticks
 
-| Command       | Description                    |
+| Command        | Description                         |
-| ------------- | ------------------------------ |
+| -------------- | ----------------------------------- |
-| `ticks-from`  | Export ticks from a start date |
+| `ticks-from`   | Export ticks from a start date      |
-| `ticks-range` | Export ticks for a date range  |
+| `ticks-range`  | Export ticks for a date range       |
+| `ticks-recent` | Export ticks from a trailing window |
 
 ### Information
 
@@ -108,18 +140,21 @@ mt5cli --login 12345 --password mypass --server MyBroker-Demo \
 | `symbols`          | Export symbol list                      |
 | `symbol-info`      | Export symbol details                   |
 | `symbol-info-tick` | Export the last tick for a symbol       |
+| `minimum-margins`  | Export minimum-volume margin summary    |
 | `market-book`      | Export market depth (order book)        |
 
 ### Trading
 
-| Command          | Description                                                 |
+| Command                | Description                                                 |
-| ---------------- | ----------------------------------------------------------- |
+| ---------------------- | ----------------------------------------------------------- |
-| `orders`         | Export active orders                                        |
+| `orders`               | Export active orders                                        |
-| `positions`      | Export open positions                                       |
+| `positions`            | Export open positions                                       |
-| `history-orders` | Export historical orders                                    |
+| `history-orders`       | Export historical orders                                    |
-| `history-deals`  | Export historical deals                                     |
+| `history-deals`        | Export historical deals                                     |
-| `order-check`    | Check funds sufficiency for a trade request                 |
+| `recent-history-deals` | Export historical deals from a trailing window              |
-| `order-send`     | Send a trade request to the trade server (`--yes` required) |
+| `mt5-summary`          | Export terminal/account status summary                      |
+| `order-check`          | Check funds sufficiency for a trade request                 |
+| `order-send`           | Send a trade request to the trade server (`--yes` required) |
 
 Use `order-check` to validate a request payload before running `order-send --yes`.
 

mkdocs.yml

@@ -58,6 +58,7 @@ nav:
       - Overview: api/index.md
       - CLI: api/cli.md
       - SDK: api/sdk.md
+      - Trading: api/trading.md
       - History Collection (SQLite): api/history.md
       - Utils: api/utils.md
 

mt5cli/__init__.py

@@ -2,11 +2,34 @@
 
 from importlib.metadata import version
 
+from .history import (
+    RateTarget,
+    build_rate_targets,
+    build_rate_view_name,
+    drop_forming_rate_bar,
+    load_rate_data,
+    load_rate_data_from_connection,
+    load_rate_series_by_granularity,
+    load_rate_series_from_sqlite,
+    resolve_history_datasets,
+    resolve_history_tick_flags,
+    resolve_history_timeframes,
+    resolve_rate_tables,
+    resolve_rate_view_name,
+    resolve_rate_view_names,
+)
 from .sdk import (
+    AccountSpec,
     Mt5CliClient,
+    ThrottledHistoryUpdater,
     account_info,
     build_config,
     collect_history,
+    collect_latest_closed_rates_by_granularity,
+    collect_latest_closed_rates_for_accounts,
+    collect_latest_rates,
+    collect_latest_rates_for_accounts,
+    collect_latest_rates_for_accounts_with_retries,
     copy_rates_from,
     copy_rates_from_pos,
     copy_rates_range,
@@ -15,9 +38,19 @@ from .sdk import (
     history_deals,
     history_orders,
     last_error,
+    latest_rates,
     market_book,
+    minimum_margins,
+    mt5_session,
+    mt5_summary,
+    mt5_summary_as_df,
     orders,
     positions,
+    recent_history_deals,
+    recent_ticks,
+    resolve_account_spec,
+    resolve_account_specs,
+    substitute_env_placeholders,
     symbol_info,
     symbol_info_tick,
     symbols,
@@ -28,31 +61,89 @@ from .sdk import (
 from .sdk import (
     version as mt5_version,
 )
-from .utils import Dataset, IfExists, detect_format, export_dataframe
+from .trading import (
+    calculate_margin_and_volume,
+    detect_position_side,
+    determine_order_limits,
+    mt5_trading_session,
+)
+from .utils import (
+    TICK_FLAG_MAP,
+    TIMEFRAME_MAP,
+    Dataset,
+    IfExists,
+    detect_format,
+    export_dataframe,
+    export_dataframe_to_sqlite,
+    parse_datetime,
+    parse_tick_flags,
+    parse_timeframe,
+)
 
 __version__ = version(__package__) if __package__ else None
 
 __all__ = [
+    "TICK_FLAG_MAP",
+    "TIMEFRAME_MAP",
+    "AccountSpec",
     "Dataset",
     "IfExists",
     "Mt5CliClient",
+    "RateTarget",
+    "ThrottledHistoryUpdater",
     "account_info",
     "build_config",
+    "build_rate_targets",
+    "build_rate_view_name",
+    "calculate_margin_and_volume",
     "collect_history",
+    "collect_latest_closed_rates_by_granularity",
+    "collect_latest_closed_rates_for_accounts",
+    "collect_latest_rates",
+    "collect_latest_rates_for_accounts",
+    "collect_latest_rates_for_accounts_with_retries",
     "copy_rates_from",
     "copy_rates_from_pos",
     "copy_rates_range",
     "copy_ticks_from",
     "copy_ticks_range",
     "detect_format",
+    "detect_position_side",
+    "determine_order_limits",
+    "drop_forming_rate_bar",
     "export_dataframe",
+    "export_dataframe_to_sqlite",
     "history_deals",
     "history_orders",
     "last_error",
+    "latest_rates",
+    "load_rate_data",
+    "load_rate_data_from_connection",
+    "load_rate_series_by_granularity",
+    "load_rate_series_from_sqlite",
     "market_book",
+    "minimum_margins",
+    "mt5_session",
+    "mt5_summary",
+    "mt5_summary_as_df",
+    "mt5_trading_session",
     "mt5_version",
     "orders",
+    "parse_datetime",
+    "parse_tick_flags",
+    "parse_timeframe",
     "positions",
+    "recent_history_deals",
+    "recent_ticks",
+    "resolve_account_spec",
+    "resolve_account_specs",
+    "resolve_history_datasets",
+    "resolve_history_tick_flags",
+    "resolve_history_timeframes",
+    "resolve_rate_tables",
+    "resolve_rate_view_name",
+    "resolve_rate_view_names",
+    "substitute_env_placeholders",
     "symbol_info",
     "symbol_info_tick",
     "symbols",

mt5cli/cli.py

@@ -96,6 +96,15 @@ def _sdk_client(ctx: typer.Context) -> sdk.Mt5CliClient:
     return sdk.Mt5CliClient(config=export_ctx.config)
 
 
+def _export_command(
+    ctx: typer.Context,
+    fetch_fn: Callable[[sdk.Mt5CliClient], pd.DataFrame],
+) -> None:
+    """Create an SDK client, fetch a DataFrame, and export it."""
+    client = _sdk_client(ctx)
+    _execute_export(ctx, lambda: fetch_fn(client))
+
+
 @app.callback()
 def _callback(  # pyright: ignore[reportUnusedFunction]
     ctx: typer.Context,
@@ -193,10 +202,9 @@ def rates_from(
     count: Annotated[int, typer.Option(help="Number of records.")],
 ) -> None:
     """Export rates from a start date."""
-    client = _sdk_client(ctx)
+    _export_command(
-    _execute_export(
         ctx,
-        lambda: client.copy_rates_from(symbol, timeframe, date_from, count),
+        lambda client: client.copy_rates_from(symbol, timeframe, date_from, count),
     )
 
 
@@ -215,10 +223,43 @@ def rates_from_pos(
     count: Annotated[int, typer.Option(help="Number of records.")],
 ) -> None:
     """Export rates from a start position."""
-    client = _sdk_client(ctx)
+    _export_command(
-    _execute_export(
         ctx,
-        lambda: client.copy_rates_from_pos(symbol, timeframe, start_pos, count),
+        lambda client: client.copy_rates_from_pos(
+            symbol,
+            timeframe,
+            start_pos,
+            count,
+        ),
+    )
+
+
+@app.command()
+def latest_rates(
+    ctx: typer.Context,
+    symbol: Annotated[str, typer.Option(help="Symbol name.")],
+    timeframe: Annotated[
+        int,
+        typer.Option(
+            click_type=TIMEFRAME_TYPE,
+            help="Timeframe.",
+        ),
+    ],
+    count: Annotated[int, typer.Option(help="Number of records.")],
+    start_pos: Annotated[
+        int,
+        typer.Option(help="Start position (0 = current bar)."),
+    ] = 0,
+) -> None:
+    """Export latest rates from a start position."""
+    _export_command(
+        ctx,
+        lambda client: client.latest_rates(
+            symbol,
+            timeframe,
+            count,
+            start_pos=start_pos,
+        ),
     )
 
 
@@ -243,10 +284,9 @@ def rates_range(
     ],
 ) -> None:
     """Export rates for a date range."""
-    client = _sdk_client(ctx)
+    _export_command(
-    _execute_export(
         ctx,
-        lambda: client.copy_rates_range(symbol, timeframe, date_from, date_to),
+        lambda client: client.copy_rates_range(symbol, timeframe, date_from, date_to),
     )
 
 
@@ -268,10 +308,9 @@ def ticks_from(
     ],
 ) -> None:
     """Export ticks from a start date."""
-    client = _sdk_client(ctx)
+    _export_command(
-    _execute_export(
         ctx,
-        lambda: client.copy_ticks_from(symbol, date_from, count, flags),
+        lambda client: client.copy_ticks_from(symbol, date_from, count, flags),
     )
 
 
@@ -293,23 +332,59 @@ def ticks_range(
     ],
 ) -> None:
     """Export ticks for a date range."""
-    client = _sdk_client(ctx)
+    _export_command(
-    _execute_export(
         ctx,
-        lambda: client.copy_ticks_range(symbol, date_from, date_to, flags),
+        lambda client: client.copy_ticks_range(symbol, date_from, date_to, flags),
+    )
+
+
+@app.command()
+def ticks_recent(
+    ctx: typer.Context,
+    symbol: Annotated[str, typer.Option(help="Symbol name.")],
+    seconds: Annotated[
+        float,
+        typer.Option(help="Lookback window in seconds."),
+    ],
+    date_to: Annotated[
+        datetime | None,
+        typer.Option(click_type=DATETIME_TYPE, help="Window end date."),
+    ] = None,
+    count: Annotated[
+        int,
+        typer.Option(help="Maximum number of ticks to return."),
+    ] = 10000,
+    flags: Annotated[
+        int,
+        typer.Option(
+            click_type=TICK_FLAGS_TYPE,
+            help="Tick flags (ALL, INFO, TRADE, or integer).",
+        ),
+    ] = "ALL",  # pyright: ignore[reportArgumentType]
+) -> None:
+    """Export ticks from a recent time window."""
+    _export_command(
+        ctx,
+        lambda client: client.recent_ticks(
+            symbol,
+            seconds,
+            date_to=date_to,
+            count=count,
+            flags=flags,
+        ),
     )
 
 
 @app.command()
 def account_info(ctx: typer.Context) -> None:
     """Export account information."""
-    _execute_export(ctx, _sdk_client(ctx).account_info)
+    _export_command(ctx, lambda client: client.account_info())
 
 
 @app.command()
 def terminal_info(ctx: typer.Context) -> None:
     """Export terminal information."""
-    _execute_export(ctx, _sdk_client(ctx).terminal_info)
+    _export_command(ctx, lambda client: client.terminal_info())
 
 
 @app.command()
@@ -321,8 +396,7 @@ def symbols(
     ] = None,
 ) -> None:
     """Export symbol list."""
-    client = _sdk_client(ctx)
+    _export_command(ctx, lambda client: client.symbols(group=group))
-    _execute_export(ctx, lambda: client.symbols(group=group))
 
 
 @app.command()
@@ -331,8 +405,16 @@ def symbol_info(
     symbol: Annotated[str, typer.Option(help="Symbol name.")],
 ) -> None:
     """Export symbol details."""
-    client = _sdk_client(ctx)
+    _export_command(ctx, lambda client: client.symbol_info(symbol))
-    _execute_export(ctx, lambda: client.symbol_info(symbol))
+
+
+@app.command()
+def minimum_margins(
+    ctx: typer.Context,
+    symbol: Annotated[str, typer.Option(help="Symbol name.")],
+) -> None:
+    """Export minimum-volume buy and sell margin requirements."""
+    _export_command(ctx, lambda client: client.minimum_margins(symbol))
 
 
 @app.command()
@@ -343,10 +425,9 @@ def orders(
     ticket: Annotated[int | None, typer.Option(help="Ticket filter.")] = None,
 ) -> None:
     """Export active orders."""
-    client = _sdk_client(ctx)
+    _export_command(
-    _execute_export(
         ctx,
-        lambda: client.orders(symbol=symbol, group=group, ticket=ticket),
+        lambda client: client.orders(symbol=symbol, group=group, ticket=ticket),
     )
 
 
@@ -358,10 +439,9 @@ def positions(
     ticket: Annotated[int | None, typer.Option(help="Ticket filter.")] = None,
 ) -> None:
     """Export open positions."""
-    client = _sdk_client(ctx)
+    _export_command(
-    _execute_export(
         ctx,
-        lambda: client.positions(symbol=symbol, group=group, ticket=ticket),
+        lambda client: client.positions(symbol=symbol, group=group, ticket=ticket),
     )
 
 
@@ -382,10 +462,9 @@ def history_orders(
     position: Annotated[int | None, typer.Option(help="Position ticket.")] = None,
 ) -> None:
     """Export historical orders."""
-    client = _sdk_client(ctx)
+    _export_command(
-    _execute_export(
         ctx,
-        lambda: client.history_orders(
+        lambda client: client.history_orders(
             date_from=date_from,
             date_to=date_to,
             group=group,
@@ -413,10 +492,9 @@ def history_deals(
     position: Annotated[int | None, typer.Option(help="Position ticket.")] = None,
 ) -> None:
     """Export historical deals."""
-    client = _sdk_client(ctx)
+    _export_command(
-    _execute_export(
         ctx,
-        lambda: client.history_deals(
+        lambda client: client.history_deals(
             date_from=date_from,
             date_to=date_to,
             group=group,
@@ -427,16 +505,45 @@ def history_deals(
     )
 
 
+@app.command()
+def recent_history_deals(
+    ctx: typer.Context,
+    hours: Annotated[float, typer.Option(help="Lookback window in hours.")],
+    date_to: Annotated[
+        datetime | None,
+        typer.Option(click_type=DATETIME_TYPE, help="Window end date."),
+    ] = None,
+    group: Annotated[str | None, typer.Option(help="Group filter.")] = None,
+    symbol: Annotated[str | None, typer.Option(help="Symbol filter.")] = None,
+) -> None:
+    """Export historical deals from a recent trailing window."""
+    _export_command(
+        ctx,
+        lambda client: client.recent_history_deals(
+            hours,
+            date_to=date_to,
+            group=group,
+            symbol=symbol,
+        ),
+    )
+
+
+@app.command()
+def mt5_summary(ctx: typer.Context) -> None:
+    """Export a compact terminal/account status summary."""
+    _export_command(ctx, lambda client: client.mt5_summary_as_df())
+
+
 @app.command()
 def version(ctx: typer.Context) -> None:
     """Export MetaTrader5 version information."""
-    _execute_export(ctx, _sdk_client(ctx).version)
+    _export_command(ctx, lambda client: client.version())
 
 
 @app.command()
 def last_error(ctx: typer.Context) -> None:
     """Export the last error information."""
-    _execute_export(ctx, _sdk_client(ctx).last_error)
+    _export_command(ctx, lambda client: client.last_error())
 
 
 @app.command()
@@ -445,8 +552,7 @@ def symbol_info_tick(
     symbol: Annotated[str, typer.Option(help="Symbol name.")],
 ) -> None:
     """Export the last tick for a symbol."""
-    client = _sdk_client(ctx)
+    _export_command(ctx, lambda client: client.symbol_info_tick(symbol))
-    _execute_export(ctx, lambda: client.symbol_info_tick(symbol))
 
 
 @app.command()
@@ -455,8 +561,7 @@ def market_book(
     symbol: Annotated[str, typer.Option(help="Symbol name.")],
 ) -> None:
     """Export market depth (order book) for a symbol."""
-    client = _sdk_client(ctx)
+    _export_command(ctx, lambda client: client.market_book(symbol))
-    _execute_export(ctx, lambda: client.market_book(symbol))
 
 
 @app.command()
@@ -552,7 +657,7 @@ def collect_history(
             click_type=TICK_FLAGS_TYPE,
             help="Tick copy flags (ALL, INFO, TRADE, or integer).",
         ),
-    ] = 1,
+    ] = "ALL",  # pyright: ignore[reportArgumentType]
     if_exists: Annotated[
         IfExists,
         typer.Option(

mt5cli/trading.py

@@ -0,0 +1,210 @@
+"""Trading-capable MetaTrader 5 session helpers and operational utilities."""
+
+from __future__ import annotations
+
+from contextlib import contextmanager
+from typing import TYPE_CHECKING, Literal
+
+from pdmt5 import Mt5Config, Mt5TradingClient
+
+from .sdk import build_config
+
+if TYPE_CHECKING:
+    from collections.abc import Iterator
+
+    import pandas as pd
+
+PositionSide = Literal["long", "short"]
+OrderSide = Literal["long", "short"]
+
+__all__ = [
+    "OrderSide",
+    "PositionSide",
+    "calculate_margin_and_volume",
+    "detect_position_side",
+    "determine_order_limits",
+    "mt5_trading_session",
+]
+
+
+def _require_unit_ratio(value: float, name: str) -> None:
+    if not 0.0 <= value <= 1.0:
+        msg = f"{name} must be between 0 and 1 inclusive."
+        raise ValueError(msg)
+
+
+def _require_protective_ratio(value: float, name: str) -> None:
+    if not 0.0 <= value < 1.0:
+        msg = f"{name} must be at least 0 and less than 1."
+        raise ValueError(msg)
+
+
+def _sum_position_volume(positions: pd.DataFrame, position_type: object) -> float:
+    matched = positions.loc[positions["type"] == position_type, "volume"]
+    if matched.empty:
+        return 0.0
+    return float(matched.to_numpy(dtype=float).sum())
+
+
+def _normalize_order_side(side: str) -> OrderSide:
+    normalized = side.lower()
+    if normalized in {"long", "buy"}:
+        return "long"
+    if normalized in {"short", "sell"}:
+        return "short"
+    msg = (
+        f"Unsupported order side: {side!r}. Expected 'long', 'short', 'buy', or 'sell'."
+    )
+    raise ValueError(msg)
+
+
+def detect_position_side(
+    client: Mt5TradingClient,
+    symbol: str,
+) -> PositionSide | None:
+    """Detect the net open position side for a symbol.
+
+    Args:
+        client: Connected ``Mt5TradingClient`` instance.
+        symbol: Symbol to inspect.
+
+    Returns:
+        ``"long"`` when net buy volume exceeds sell volume, ``"short"`` when
+        net sell volume exceeds buy volume, or ``None`` when no positions exist
+        or buy/sell volumes are exactly balanced.
+    """
+    positions = client.positions_get_as_df(symbol=symbol)
+    if positions.empty:
+        return None
+
+    buy_type = client.mt5.POSITION_TYPE_BUY
+    sell_type = client.mt5.POSITION_TYPE_SELL
+    buy_volume = _sum_position_volume(positions, buy_type)
+    sell_volume = _sum_position_volume(positions, sell_type)
+    net_volume = buy_volume - sell_volume
+    if net_volume > 0:
+        return "long"
+    if net_volume < 0:
+        return "short"
+    return None
+
+
+def calculate_margin_and_volume(
+    client: Mt5TradingClient,
+    symbol: str,
+    unit_margin_ratio: float,
+    preserved_margin_ratio: float,
+) -> dict[str, float]:
+    """Calculate tradable margin and volumes from account free margin.
+
+    Applies ``preserved_margin_ratio`` to keep a reserve off ``margin_free``,
+    then allocates ``unit_margin_ratio`` of the remainder as the margin budget
+    for volume sizing on both buy and sell sides.
+
+    Args:
+        client: Connected ``Mt5TradingClient`` instance.
+        symbol: Symbol used for minimum-lot margin and volume calculations.
+        unit_margin_ratio: Fraction of post-reserve margin to allocate per unit.
+        preserved_margin_ratio: Fraction of ``margin_free`` to preserve.
+
+    Returns:
+        Dictionary with ``margin_free``, ``available_margin``, ``trade_margin``,
+        ``buy_volume``, and ``sell_volume``. Negative ``margin_free`` values are
+        clamped to ``0.0`` before sizing.
+    """
+    _require_unit_ratio(unit_margin_ratio, "unit_margin_ratio")
+    _require_unit_ratio(preserved_margin_ratio, "preserved_margin_ratio")
+
+    account = client.account_info_as_dict()
+    margin_free = max(0.0, float(account.get("margin_free") or 0.0))
+    available_margin = margin_free * (1.0 - preserved_margin_ratio)
+    trade_margin = available_margin * unit_margin_ratio
+    buy_volume = client.calculate_volume_by_margin(symbol, trade_margin, "BUY")
+    sell_volume = client.calculate_volume_by_margin(symbol, trade_margin, "SELL")
+    return {
+        "margin_free": margin_free,
+        "available_margin": available_margin,
+        "trade_margin": trade_margin,
+        "buy_volume": buy_volume,
+        "sell_volume": sell_volume,
+    }
+
+
+def determine_order_limits(
+    client: Mt5TradingClient,
+    symbol: str,
+    side: OrderSide | str,
+    stop_loss_limit_ratio: float,
+    take_profit_limit_ratio: float,
+) -> dict[str, float | None]:
+    """Derive entry and protective order prices from current market quotes.
+
+    Args:
+        client: Connected ``Mt5TradingClient`` instance.
+        symbol: Symbol used for the quote lookup.
+        side: Position side as ``"long"``/``"short"`` (``"buy"``/``"sell"``
+            aliases are accepted).
+        stop_loss_limit_ratio: Relative distance from entry for stop loss in
+            ``[0, 1)``. A value of ``0`` omits the stop loss.
+        take_profit_limit_ratio: Relative distance from entry for take profit in
+            ``[0, 1)``. A value of ``0`` omits the take profit.
+
+    Returns:
+        Dictionary with ``entry``, ``stop_loss``, and ``take_profit`` keys.
+        Omitted protective levels are returned as ``None``.
+    """
+    _require_protective_ratio(stop_loss_limit_ratio, "stop_loss_limit_ratio")
+    _require_protective_ratio(take_profit_limit_ratio, "take_profit_limit_ratio")
+    normalized_side = _normalize_order_side(side)
+    tick = client.symbol_info_tick_as_dict(symbol=symbol)
+    entry = float(tick["ask"] if normalized_side == "long" else tick["bid"])
+
+    stop_loss: float | None = None
+    if stop_loss_limit_ratio > 0:
+        if normalized_side == "long":
+            stop_loss = entry * (1.0 - stop_loss_limit_ratio)
+        else:
+            stop_loss = entry * (1.0 + stop_loss_limit_ratio)
+
+    take_profit: float | None = None
+    if take_profit_limit_ratio > 0:
+        if normalized_side == "long":
+            take_profit = entry * (1.0 + take_profit_limit_ratio)
+        else:
+            take_profit = entry * (1.0 - take_profit_limit_ratio)
+
+    return {
+        "entry": entry,
+        "stop_loss": stop_loss,
+        "take_profit": take_profit,
+    }
+
+
+@contextmanager
+def mt5_trading_session(
+    config: Mt5Config | None = None,
+    retry_count: int = 0,
+) -> Iterator[Mt5TradingClient]:
+    """Open a trading-capable MT5 session and always shut down safely.
+
+    Launches the MetaTrader 5 terminal using ``Mt5Config.path`` when set,
+    initializes and logs in via ``initialize_and_login_mt5()``, yields a
+    connected :class:`~pdmt5.Mt5TradingClient`, and calls ``shutdown()`` on
+    exit even when an error is raised inside the context.
+
+    Args:
+        config: MT5 connection configuration. Defaults to an empty config that
+            attaches to a running terminal.
+        retry_count: Number of initialization retries passed to
+            ``Mt5TradingClient``.
+
+    Yields:
+        Connected ``Mt5TradingClient`` bound to the session.
+    """
+    mt5_config = config or build_config()
+    client = Mt5TradingClient(config=mt5_config, retry_count=retry_count)
+    try:
+        client.initialize_and_login_mt5()
+        yield client
+    finally:
+        client.shutdown()

mt5cli/utils.py

@@ -2,51 +2,36 @@
 
 from __future__ import annotations
 
-import importlib
 import json
+import sqlite3
 from datetime import UTC, datetime
 from enum import StrEnum
 from pathlib import Path
-from typing import TYPE_CHECKING, Any, TypeGuard, cast
+from typing import TYPE_CHECKING, Any, TypeGuard
 
 import click
+from pdmt5 import COPY_TICKS_MAP, TIMEFRAME_MAP
+from pdmt5 import parse_copy_ticks as _parse_copy_ticks
+from pdmt5 import parse_timeframe as _parse_timeframe
 
 if TYPE_CHECKING:
+    from collections.abc import Sequence
+
     import pandas as pd
 
 # ---------------------------------------------------------------------------
 # Constants
 # ---------------------------------------------------------------------------
 
-TIMEFRAME_MAP: dict[str, int] = {
+# Backward-compatible snapshot; prefer ``COPY_TICKS_MAP`` from pdmt5 directly.
-    "M1": 1,
+TICK_FLAG_MAP: dict[str, int] = dict(COPY_TICKS_MAP)
-    "M2": 2,
-    "M3": 3,
-    "M4": 4,
-    "M5": 5,
-    "M6": 6,
-    "M10": 10,
-    "M12": 12,
-    "M15": 15,
-    "M20": 20,
-    "M30": 30,
-    "H1": 16385,
-    "H2": 16386,
-    "H3": 16387,
-    "H4": 16388,
-    "H6": 16390,
-    "H8": 16392,
-    "H12": 16396,
-    "D1": 16408,
-    "W1": 32769,
-    "MN1": 49153,
-}
 
-TICK_FLAG_MAP: dict[str, int] = {
+TIMEFRAME_NAMES: tuple[str, ...] = tuple(
-    "ALL": 1,
+    name for name in TIMEFRAME_MAP if not name.startswith("TIMEFRAME_")
-    "INFO": 2,
+)
-    "TRADE": 4,
+_TICK_FLAG_NAMES: tuple[str, ...] = tuple(
-}
+    name for name in COPY_TICKS_MAP if not name.startswith("COPY_TICKS_")
+)
 
 _FORMAT_EXTENSIONS: dict[str, str] = {
     ".csv": "csv",
@@ -158,10 +143,8 @@ class _TimeframeType(click.ParamType):
         Returns:
             Integer timeframe value.
         """
-        if isinstance(value, int):
-            return value
         try:
-            return parse_timeframe(str(value))
+            return parse_timeframe(value)
         except ValueError as exc:
             self.fail(str(exc), param, ctx)
 
@@ -187,10 +170,8 @@ class _TickFlagsType(click.ParamType):
         Returns:
             Integer tick flag value.
         """
-        if isinstance(value, int):
-            return value
         try:
-            return parse_tick_flags(str(value))
+            return parse_tick_flags(value)
         except ValueError as exc:
             self.fail(str(exc), param, ctx)
 
@@ -260,6 +241,50 @@ def detect_format(
     raise ValueError(msg)
 
 
+def export_dataframe_to_sqlite(
+    df: pd.DataFrame,
+    output_path: Path,
+    table_name: str = "data",
+    *,
+    if_exists: IfExists = IfExists.APPEND,
+    index: bool = False,
+    index_label: str | None = None,
+    deduplicate_on: Sequence[str] | None = None,
+) -> None:
+    """Write a DataFrame to SQLite with configurable append and deduplication.
+
+    Args:
+        df: DataFrame to export.
+        output_path: SQLite database path.
+        table_name: Target table name.
+        if_exists: Conflict behavior when the table already exists.
+        index: Whether to write the DataFrame index as a column.
+        index_label: Column name for the index when ``index=True``.
+        deduplicate_on: Optional key columns to deduplicate after writing,
+            keeping the latest ``ROWID`` per key group. Deduplication scans the
+            full table, so repeated appends cost O(table size); index the key
+            columns when appending frequently.
+    """
+    with sqlite3.connect(output_path) as conn:
+        df.to_sql(  # type: ignore[reportUnknownMemberType]
+            table_name,
+            conn,
+            if_exists=if_exists.value,
+            index=index,
+            index_label=index_label,
+        )
+        if deduplicate_on:
+            from .history import drop_duplicates_in_table  # noqa: PLC0415
+
+            drop_duplicates_in_table(
+                conn.cursor(),
+                table_name,
+                list(deduplicate_on),
+                keep="last",
+            )
+            conn.commit()
+
+
 def export_dataframe(
     df: pd.DataFrame,
     output_path: Path,
@@ -289,14 +314,13 @@ def export_dataframe(
     elif output_format == "parquet":
         df.to_parquet(output_path, index=False)
     elif output_format == "sqlite3":
-        sqlite3 = cast("Any", importlib.import_module("sqlite3"))
+        export_dataframe_to_sqlite(
-        with sqlite3.connect(output_path) as conn:
+            df,
-            df.to_sql(  # type: ignore[reportUnknownMemberType]
+            output_path,
-                table_name,
+            table_name,
-                conn,
+            if_exists=IfExists.REPLACE,
-                if_exists="replace",
+            index=False,
-                index=False,
+        )
-            )
     else:
         msg = f"Unsupported output format: {output_format}"
         raise ValueError(msg)
@@ -325,7 +349,7 @@ def parse_datetime(value: str) -> datetime:
     return dt
 
 
-def parse_timeframe(value: str) -> int:
+def parse_timeframe(value: object) -> int:
     """Parse a timeframe string or integer value.
 
     Args:
@@ -337,37 +361,39 @@ def parse_timeframe(value: str) -> int:
     Raises:
         ValueError: If the timeframe is invalid.
     """
-    upper = value.upper()
-    if upper in TIMEFRAME_MAP:
-        return TIMEFRAME_MAP[upper]
     try:
-        return int(value)
+        return _parse_timeframe(value)
     except ValueError:
-        valid = ", ".join(TIMEFRAME_MAP)
+        display = value if isinstance(value, str) else repr(value)
-        msg = f"Invalid timeframe: '{value}'. Use one of: {valid}, or an integer."
+        valid = ", ".join(TIMEFRAME_NAMES)
+        msg = (
+            f"Invalid timeframe: '{display}'. "
+            f"Use one of: {valid}, or a supported integer."
+        )
         raise ValueError(msg) from None
 
 
-def parse_tick_flags(value: str) -> int:
+def parse_tick_flags(value: object) -> int:
     """Parse tick flags string or integer value.
 
     Args:
-        value: Tick flag name (ALL, INFO, TRADE) or integer value.
+        value: Tick flag name (ALL, INFO, TRADE, COPY_TICKS_*) or integer value.
 
     Returns:
-        Integer tick flag value.
+        Integer tick flag value compatible with MetaTrader 5 ``COPY_TICKS_*``.
 
     Raises:
         ValueError: If the flag is invalid.
     """
-    upper = value.upper()
-    if upper in TICK_FLAG_MAP:
-        return TICK_FLAG_MAP[upper]
     try:
-        return int(value)
+        return _parse_copy_ticks(value)
     except ValueError:
-        valid = ", ".join(TICK_FLAG_MAP)
+        display = value if isinstance(value, str) else repr(value)
-        msg = f"Invalid tick flags: '{value}'. Use one of: {valid}, or an integer."
+        valid = ", ".join(_TICK_FLAG_NAMES)
+        msg = (
+            f"Invalid tick flags: '{display}'. "
+            f"Use one of: {valid}, or a supported integer."
+        )
         raise ValueError(msg) from None
 
 

pyproject.toml

@@ -1,6 +1,6 @@
 [project]
 name = "mt5cli"
-version = "0.4.2"
+version = "0.7.1"
 description = "Command-line tool for MetaTrader 5"
 authors = [{name = "dceoy", email = "dceoy@users.noreply.github.com"}]
 maintainers = [{name = "dceoy", email = "dceoy@users.noreply.github.com"}]
@@ -9,7 +9,7 @@ license-files = ["LICENSE"]
 readme = "README.md"
 requires-python = ">= 3.11, < 3.14"
 dependencies = [
-  "pdmt5 >= 0.2.3",
+  "pdmt5>=0.3.0",
   "click >= 8.1.0",
   "pyarrow >= 19.0.0",
   "typer >= 0.15.0",

tests/conftest.py

@@ -0,0 +1,52 @@
+"""Shared pytest fixtures for mt5cli tests."""
+
+from __future__ import annotations
+
+from unittest.mock import MagicMock
+
+import pandas as pd
+import pytest
+from pytest_mock import MockerFixture  # noqa: TC002
+
+_DATAFRAME_METHODS = (
+    "copy_rates_from_as_df",
+    "copy_rates_from_pos_as_df",
+    "copy_rates_range_as_df",
+    "copy_ticks_from_as_df",
+    "copy_ticks_range_as_df",
+    "account_info_as_df",
+    "terminal_info_as_df",
+    "symbols_get_as_df",
+    "symbol_info_as_df",
+    "orders_get_as_df",
+    "positions_get_as_df",
+    "history_orders_get_as_df",
+    "history_deals_get_as_df",
+    "version_as_df",
+    "last_error_as_df",
+    "symbol_info_tick_as_df",
+    "market_book_get_as_df",
+    "order_check_as_df",
+    "order_send_as_df",
+)
+
+
+def build_mock_mt5_data_client() -> MagicMock:
+    """Return a MagicMock Mt5DataClient with common DataFrame stubs."""
+    client = MagicMock()
+    sample_df = pd.DataFrame({"col": [1]})
+    for method_name in _DATAFRAME_METHODS:
+        getattr(client, method_name).return_value = sample_df
+    client.version.return_value = (5, 0, 1)
+    client.terminal_info.return_value = {"connected": True, "paths": ["terminal.exe"]}
+    client.account_info.return_value = {"login": 123, "limits": {"modes": ["demo"]}}
+    client.symbols_total.return_value = 42
+    return client
+
+
+@pytest.fixture
+def mock_client(mocker: MockerFixture) -> MagicMock:
+    """Create and patch a mock Mt5DataClient for CLI and SDK tests."""
+    client = build_mock_mt5_data_client()
+    mocker.patch("mt5cli.sdk.Mt5DataClient", return_value=client)
+    return client

tests/test_cli.py

@@ -6,7 +6,7 @@ import json
 import logging
 import re
 import sqlite3
-from datetime import UTC, datetime
+from datetime import UTC, datetime, timedelta
 from typing import TYPE_CHECKING
 from unittest.mock import MagicMock
 
@@ -69,34 +69,6 @@ class TestExecuteExport:
 # ---------------------------------------------------------------------------
 
 
-@pytest.fixture
-def mock_client(mocker: MockerFixture) -> MagicMock:
-    """Create and patch a mock Mt5DataClient for CLI tests."""
-    client = MagicMock()
-    sample_df = pd.DataFrame({"col": [1]})
-    client.copy_rates_from_as_df.return_value = sample_df
-    client.copy_rates_from_pos_as_df.return_value = sample_df
-    client.copy_rates_range_as_df.return_value = sample_df
-    client.copy_ticks_from_as_df.return_value = sample_df
-    client.copy_ticks_range_as_df.return_value = sample_df
-    client.account_info_as_df.return_value = sample_df
-    client.terminal_info_as_df.return_value = sample_df
-    client.symbols_get_as_df.return_value = sample_df
-    client.symbol_info_as_df.return_value = sample_df
-    client.orders_get_as_df.return_value = sample_df
-    client.positions_get_as_df.return_value = sample_df
-    client.history_orders_get_as_df.return_value = sample_df
-    client.history_deals_get_as_df.return_value = sample_df
-    client.version_as_df.return_value = sample_df
-    client.last_error_as_df.return_value = sample_df
-    client.symbol_info_tick_as_df.return_value = sample_df
-    client.market_book_get_as_df.return_value = sample_df
-    client.order_check_as_df.return_value = sample_df
-    client.order_send_as_df.return_value = sample_df
-    mocker.patch("mt5cli.sdk.Mt5DataClient", return_value=client)
-    return client
-
-
 class TestCommands:
     """Tests for all CLI subcommands via CliRunner."""
 
@@ -223,6 +195,37 @@ class TestCommands:
             count=50,
         )
 
+    def test_latest_rates(
+        self,
+        tmp_path: Path,
+        mock_client: MagicMock,
+    ) -> None:
+        """Test latest-rates command."""
+        output = tmp_path / "out.csv"
+        result = runner.invoke(
+            app,
+            [
+                "-o",
+                str(output),
+                "latest-rates",
+                "--symbol",
+                "GBPUSD",
+                "--timeframe",
+                "H1",
+                "--count",
+                "50",
+                "--start-pos",
+                "2",
+            ],
+        )
+        assert result.exit_code == 0, result.output
+        mock_client.copy_rates_from_pos_as_df.assert_called_once_with(
+            symbol="GBPUSD",
+            timeframe=16385,
+            start_pos=2,
+            count=50,
+        )
+
     def test_rates_range(
         self,
         tmp_path: Path,
@@ -282,7 +285,7 @@ class TestCommands:
             symbol="EURUSD",
             date_from=datetime(2024, 1, 1, tzinfo=UTC),
             count=100,
-            flags=1,
+            flags=-1,
         )
 
     def test_ticks_range(
@@ -313,9 +316,68 @@ class TestCommands:
             symbol="EURUSD",
             date_from=datetime(2024, 1, 1, tzinfo=UTC),
             date_to=datetime(2024, 2, 1, tzinfo=UTC),
-            flags=2,
+            flags=1,
         )
 
+    def test_ticks_recent(
+        self,
+        tmp_path: Path,
+        mock_client: MagicMock,
+    ) -> None:
+        """Test ticks-recent command."""
+        output = tmp_path / "out.csv"
+        result = runner.invoke(
+            app,
+            [
+                "-o",
+                str(output),
+                "ticks-recent",
+                "--symbol",
+                "EURUSD",
+                "--seconds",
+                "120",
+                "--date-to",
+                "2024-01-02",
+                "--count",
+                "500",
+                "--flags",
+                "ALL",
+            ],
+        )
+        assert result.exit_code == 0, result.output
+        mock_client.copy_ticks_from_as_df.assert_called_once_with(
+            symbol="EURUSD",
+            date_from=datetime(2024, 1, 2, tzinfo=UTC) - timedelta(seconds=120),
+            count=500,
+            flags=-1,
+        )
+        mock_client.copy_ticks_range_as_df.assert_not_called()
+
+    def test_minimum_margins(
+        self,
+        tmp_path: Path,
+        mock_client: MagicMock,
+    ) -> None:
+        """Test minimum-margins command."""
+        sym = MagicMock(volume_min=0.01)
+        account = MagicMock(currency="USD")
+        tick = MagicMock(ask=1.1010, bid=1.1000)
+        mock_client.symbol_info.return_value = sym
+        mock_client.account_info.return_value = account
+        mock_client.symbol_info_tick.return_value = tick
+        mock_client.order_calc_margin.side_effect = [12.5, 12.4]
+        mock_client.mt5.ORDER_TYPE_BUY = 0
+        mock_client.mt5.ORDER_TYPE_SELL = 1
+        output = tmp_path / "out.csv"
+        result = runner.invoke(
+            app,
+            ["-o", str(output), "minimum-margins", "--symbol", "EURUSD"],
+        )
+        assert result.exit_code == 0, result.output
+        mock_client.symbol_info.assert_called_once_with("EURUSD")
+        mock_client.order_calc_margin.assert_any_call(0, "EURUSD", 0.01, 1.1010)
+        mock_client.order_calc_margin.assert_any_call(1, "EURUSD", 0.01, 1.1000)
+
     def test_orders(
         self,
         tmp_path: Path,
@@ -392,6 +454,84 @@ class TestCommands:
         assert result.exit_code == 0, result.output
         mock_client.history_deals_get_as_df.assert_called_once()
 
+    def test_recent_history_deals(
+        self,
+        tmp_path: Path,
+        mock_client: MagicMock,
+    ) -> None:
+        """Test recent-history-deals command."""
+        output = tmp_path / "out.csv"
+        result = runner.invoke(
+            app,
+            [
+                "-o",
+                str(output),
+                "recent-history-deals",
+                "--hours",
+                "6",
+                "--date-to",
+                "2024-01-02",
+                "--symbol",
+                "EURUSD",
+            ],
+        )
+        assert result.exit_code == 0, result.output
+        mock_client.history_deals_get_as_df.assert_called_once_with(
+            date_from=datetime(2024, 1, 1, 18, tzinfo=UTC),
+            date_to=datetime(2024, 1, 2, tzinfo=UTC),
+            group=None,
+            symbol="EURUSD",
+            ticket=None,
+            position=None,
+        )
+
+    @pytest.mark.parametrize(
+        ("filename", "reader"),
+        [
+            ("summary.csv", "csv"),
+            ("summary.json", "json"),
+            ("summary.db", "sqlite3"),
+            ("summary.parquet", "parquet"),
+        ],
+    )
+    def test_mt5_summary_export_formats(
+        self,
+        tmp_path: Path,
+        mock_client: MagicMock,
+        filename: str,
+        reader: str,
+    ) -> None:
+        """Test mt5-summary writes export-safe files for supported formats."""
+        output = tmp_path / filename
+        result = runner.invoke(app, ["-o", str(output), "mt5-summary"])
+        assert result.exit_code == 0, result.output
+        assert output.exists()
+        mock_client.version.assert_called_once()
+        mock_client.terminal_info.assert_called_once()
+        mock_client.account_info.assert_called_once()
+        mock_client.symbols_total.assert_called_once()
+        if reader == "csv":
+            frame = pd.read_csv(output)
+        elif reader == "json":
+            with output.open() as f:
+                records = json.load(f)
+            frame = pd.DataFrame(records)
+        elif reader == "sqlite3":
+            with sqlite3.connect(output) as conn:
+                frame = pd.read_sql(  # type: ignore[reportUnknownMemberType]
+                    "SELECT * FROM data",
+                    conn,
+                )
+        else:
+            frame = pd.read_parquet(output)
+        assert len(frame) == 1
+        assert frame.iloc[0].to_dict() == {
+            "version": "[5,0,1]",
+            "terminal_info": '{"connected":true,"paths":["terminal.exe"]}',
+            "account_info": '{"limits":{"modes":["demo"]},"login":123}',
+            "symbols_total": 42,
+        }
+
     def test_version(
         self,
         tmp_path: Path,
@@ -828,7 +968,7 @@ class TestCollectHistory:
             symbol="EURUSD",
             date_from=datetime(2024, 1, 1, tzinfo=UTC),
             date_to=datetime(2024, 2, 1, tzinfo=UTC),
-            flags=1,
+            flags=-1,
         )
         with sqlite3.connect(output) as conn:
             tables = {
@@ -1041,7 +1181,7 @@ class TestCollectHistory:
             symbol="EURUSD",
             date_from=datetime(2024, 1, 1, tzinfo=UTC),
             date_to=datetime(2024, 2, 1, tzinfo=UTC),
-            flags=1,
+            flags=-1,
         )
 
     def test_collect_history_with_views(

tests/test_trading.py

@@ -0,0 +1,356 @@
+"""Tests for trading session helpers and operational utilities."""
+
+from __future__ import annotations
+
+from unittest.mock import MagicMock
+
+import pandas as pd
+import pytest
+from pdmt5 import Mt5RuntimeError
+from pytest_mock import MockerFixture  # noqa: TC002
+
+from mt5cli.sdk import build_config
+from mt5cli.trading import (
+    calculate_margin_and_volume,
+    detect_position_side,
+    determine_order_limits,
+    mt5_trading_session,
+)
+
+
+class TestDetectPositionSide:
+    """Tests for detect_position_side."""
+
+    def test_returns_none_when_no_positions(self) -> None:
+        """Test None is returned when no open positions exist."""
+        client = MagicMock()
+        client.positions_get_as_df.return_value = pd.DataFrame()
+
+        assert detect_position_side(client, "EURUSD") is None
+
+    def test_returns_long_for_net_buy_volume(self) -> None:
+        """Test long is returned when buy volume exceeds sell volume."""
+        client = MagicMock()
+        client.mt5.POSITION_TYPE_BUY = 0
+        client.mt5.POSITION_TYPE_SELL = 1
+        client.positions_get_as_df.return_value = pd.DataFrame(
+            {
+                "type": [0, 0, 1],
+                "volume": [0.2, 0.1, 0.05],
+            },
+        )
+
+        assert detect_position_side(client, "EURUSD") == "long"
+
+    def test_returns_short_for_net_sell_volume(self) -> None:
+        """Test short is returned when sell volume exceeds buy volume."""
+        client = MagicMock()
+        client.mt5.POSITION_TYPE_BUY = 0
+        client.mt5.POSITION_TYPE_SELL = 1
+        client.positions_get_as_df.return_value = pd.DataFrame(
+            {
+                "type": [1, 1],
+                "volume": [0.3, 0.1],
+            },
+        )
+
+        assert detect_position_side(client, "EURUSD") == "short"
+
+    def test_returns_none_for_balanced_hedged_positions(self) -> None:
+        """Test None is returned when buy and sell volumes net to zero."""
+        client = MagicMock()
+        client.mt5.POSITION_TYPE_BUY = 0
+        client.mt5.POSITION_TYPE_SELL = 1
+        client.positions_get_as_df.return_value = pd.DataFrame(
+            {
+                "type": [0, 1],
+                "volume": [0.2, 0.2],
+            },
+        )
+
+        assert detect_position_side(client, "EURUSD") is None
+
+
+class TestCalculateMarginAndVolume:
+    """Tests for calculate_margin_and_volume."""
+
+    def test_calculates_margin_budget_and_volumes(self) -> None:
+        """Test margin budget and buy/sell volumes are derived from ratios."""
+        client = MagicMock()
+        client.account_info_as_dict.return_value = {"margin_free": 1000.0}
+        client.calculate_volume_by_margin.side_effect = [0.3, 0.2]
+
+        result = calculate_margin_and_volume(
+            client,
+            "EURUSD",
+            unit_margin_ratio=0.5,
+            preserved_margin_ratio=0.2,
+        )
+
+        assert result == {
+            "margin_free": 1000.0,
+            "available_margin": 800.0,
+            "trade_margin": 400.0,
+            "buy_volume": 0.3,
+            "sell_volume": 0.2,
+        }
+        client.calculate_volume_by_margin.assert_any_call("EURUSD", 400.0, "BUY")
+        client.calculate_volume_by_margin.assert_any_call("EURUSD", 400.0, "SELL")
+
+    @pytest.mark.parametrize(
+        ("account_dict", "expected_margin_free"),
+        [
+            ({"margin_free": 0.0}, 0.0),
+            ({}, 0.0),
+            ({"margin_free": None}, 0.0),
+        ],
+    )
+    def test_zero_or_missing_margin_free(
+        self,
+        account_dict: dict[str, float | None],
+        expected_margin_free: float,
+    ) -> None:
+        """Test missing or zero margin_free yields zero trade margin."""
+        client = MagicMock()
+        client.account_info_as_dict.return_value = account_dict
+        client.calculate_volume_by_margin.return_value = 0.0
+
+        result = calculate_margin_and_volume(
+            client,
+            "EURUSD",
+            unit_margin_ratio=0.5,
+            preserved_margin_ratio=0.2,
+        )
+
+        assert result["margin_free"] == expected_margin_free
+        client.calculate_volume_by_margin.assert_any_call("EURUSD", 0.0, "BUY")
+        client.calculate_volume_by_margin.assert_any_call("EURUSD", 0.0, "SELL")
+
+    def test_clamps_negative_margin_free_to_zero(self) -> None:
+        """Test negative margin_free is clamped to zero before sizing."""
+        client = MagicMock()
+        client.account_info_as_dict.return_value = {"margin_free": -500.0}
+        client.calculate_volume_by_margin.return_value = 0.0
+
+        result = calculate_margin_and_volume(
+            client,
+            "EURUSD",
+            unit_margin_ratio=0.5,
+            preserved_margin_ratio=0.2,
+        )
+
+        expected_margin_free = 0.0
+        assert result["margin_free"] == expected_margin_free
+        client.calculate_volume_by_margin.assert_any_call("EURUSD", 0.0, "BUY")
+        client.calculate_volume_by_margin.assert_any_call("EURUSD", 0.0, "SELL")
+
+    @pytest.mark.parametrize(
+        ("unit_ratio", "preserved_ratio"),
+        [
+            (-0.1, 0.0),
+            (1.1, 0.0),
+            (0.5, -0.1),
+            (0.5, 1.1),
+        ],
+    )
+    def test_rejects_invalid_ratios(
+        self,
+        unit_ratio: float,
+        preserved_ratio: float,
+    ) -> None:
+        """Test invalid ratio values raise ValueError."""
+        with pytest.raises(ValueError, match="must be between 0 and 1"):
+            calculate_margin_and_volume(
+                MagicMock(),
+                "EURUSD",
+                unit_margin_ratio=unit_ratio,
+                preserved_margin_ratio=preserved_ratio,
+            )
+
+
+class TestDetermineOrderLimits:
+    """Tests for determine_order_limits."""
+
+    @pytest.mark.parametrize(
+        ("side", "expected_entry_key"),
+        [
+            ("long", "ask"),
+            ("short", "bid"),
+            ("buy", "ask"),
+            ("sell", "bid"),
+        ],
+    )
+    def test_uses_expected_quote_for_entry(
+        self,
+        side: str,
+        expected_entry_key: str,
+    ) -> None:
+        """Test entry price is taken from ask for long/buy and bid for short/sell."""
+        client = MagicMock()
+        client.symbol_info_tick_as_dict.return_value = {"ask": 1.1010, "bid": 1.1000}
+
+        result = determine_order_limits(
+            client,
+            "EURUSD",
+            side,
+            stop_loss_limit_ratio=0.0,
+            take_profit_limit_ratio=0.0,
+        )
+
+        assert (
+            result["entry"]
+            == client.symbol_info_tick_as_dict.return_value[expected_entry_key]
+        )
+        assert result["stop_loss"] is None
+        assert result["take_profit"] is None
+
+    def test_calculates_long_protective_levels(self) -> None:
+        """Test long stop loss and take profit are placed below/above entry."""
+        client = MagicMock()
+        client.symbol_info_tick_as_dict.return_value = {"ask": 100.0, "bid": 99.0}
+
+        result = determine_order_limits(
+            client,
+            "EURUSD",
+            "long",
+            stop_loss_limit_ratio=0.02,
+            take_profit_limit_ratio=0.03,
+        )
+
+        assert result == {
+            "entry": 100.0,
+            "stop_loss": 98.0,
+            "take_profit": 103.0,
+        }
+
+    def test_calculates_short_protective_levels(self) -> None:
+        """Test short stop loss and take profit are placed above/below entry."""
+        client = MagicMock()
+        client.symbol_info_tick_as_dict.return_value = {"ask": 100.0, "bid": 99.0}
+
+        result = determine_order_limits(
+            client,
+            "EURUSD",
+            "short",
+            stop_loss_limit_ratio=0.02,
+            take_profit_limit_ratio=0.03,
+        )
+
+        assert result == {
+            "entry": 99.0,
+            "stop_loss": 100.98,
+            "take_profit": 96.03,
+        }
+
+    def test_rejects_unknown_side(self) -> None:
+        """Test unsupported side values raise ValueError."""
+        with pytest.raises(ValueError, match="Unsupported order side"):
+            determine_order_limits(
+                MagicMock(),
+                "EURUSD",
+                "flat",
+                stop_loss_limit_ratio=0.01,
+                take_profit_limit_ratio=0.01,
+            )
+
+    @pytest.mark.parametrize(
+        ("stop_loss_ratio", "take_profit_ratio"),
+        [
+            (-0.05, 0.01),
+            (0.01, 2.0),
+        ],
+    )
+    def test_rejects_invalid_protective_ratios(
+        self,
+        stop_loss_ratio: float,
+        take_profit_ratio: float,
+    ) -> None:
+        """Test out-of-range protective ratios raise ValueError."""
+        with pytest.raises(ValueError, match="must be at least 0 and less than 1"):
+            determine_order_limits(
+                MagicMock(),
+                "EURUSD",
+                "long",
+                stop_loss_limit_ratio=stop_loss_ratio,
+                take_profit_limit_ratio=take_profit_ratio,
+            )
+
+    @pytest.mark.parametrize(
+        ("field", "ratio"),
+        [
+            ("stop_loss_limit_ratio", 1.0),
+            ("take_profit_limit_ratio", 1.0),
+        ],
+    )
+    def test_rejects_unit_boundary_protective_ratios(
+        self,
+        field: str,
+        ratio: float,
+    ) -> None:
+        """Test protective ratios of exactly 1.0 are rejected."""
+        kwargs = {
+            "stop_loss_limit_ratio": 0.01,
+            "take_profit_limit_ratio": 0.01,
+            field: ratio,
+        }
+        with pytest.raises(ValueError, match="must be at least 0 and less than 1"):
+            determine_order_limits(
+                MagicMock(),
+                "EURUSD",
+                "long",
+                **kwargs,
+            )
+
+
+class TestMt5TradingSession:
+    """Tests for the mt5_trading_session context manager."""
+
+    def test_yields_connected_client_and_shuts_down(
+        self,
+        mocker: MockerFixture,
+    ) -> None:
+        """Test mt5_trading_session connects, yields a client, and shuts down."""
+        mock_client = MagicMock()
+        trading_client = mocker.patch(
+            "mt5cli.trading.Mt5TradingClient",
+            return_value=mock_client,
+        )
+
+        with mt5_trading_session(
+            build_config(path="/opt/mt5/terminal64.exe"),
+            retry_count=2,
+        ) as client:
+            mock_client.initialize_and_login_mt5.assert_called_once()
+            assert client is mock_client
+
+        trading_client.assert_called_once()
+        assert trading_client.call_args.kwargs["retry_count"] == 2
+        assert (
+            trading_client.call_args.kwargs["config"].path == "/opt/mt5/terminal64.exe"
+        )
+        mock_client.shutdown.assert_called_once()
+
+    def test_shuts_down_when_initialize_raises(
+        self,
+        mocker: MockerFixture,
+    ) -> None:
+        """Test shutdown is called when initialization fails."""
+        mock_client = MagicMock()
+        mock_client.initialize_and_login_mt5.side_effect = Mt5RuntimeError("boom")
+        mocker.patch("mt5cli.trading.Mt5TradingClient", return_value=mock_client)
+
+        with pytest.raises(Mt5RuntimeError, match="boom"), mt5_trading_session():
+            pass
+
+        mock_client.shutdown.assert_called_once()
+
+    def test_shuts_down_when_body_raises(self, mocker: MockerFixture) -> None:
+        """Test shutdown is called when the context body raises."""
+        mock_client = MagicMock()
+        mocker.patch("mt5cli.trading.Mt5TradingClient", return_value=mock_client)
+
+        body_error = "body error"
+        with pytest.raises(RuntimeError, match=body_error), mt5_trading_session():
+            raise RuntimeError(body_error)
+
+        mock_client.shutdown.assert_called_once()

tests/test_utils.py

@@ -21,8 +21,10 @@ from mt5cli.utils import (
     TIMEFRAME_MAP,
     TIMEFRAME_TYPE,
     Dataset,
+    IfExists,
     detect_format,
     export_dataframe,
+    export_dataframe_to_sqlite,
     parse_datetime,
     parse_request,
     parse_tick_flags,
@@ -130,6 +132,112 @@ class TestExportDataframe:
             export_dataframe(sample_df, tmp_path / "out.txt", "xml")
 
 
+class TestExportDataframeToSqlite:
+    """Tests for export_dataframe_to_sqlite."""
+
+    def test_append_preserves_existing_rows(self, tmp_path: Path) -> None:
+        """Test append mode keeps prior rows in the SQLite table."""
+        output = tmp_path / "append.db"
+        first = pd.DataFrame({"id": [1], "value": ["a"]})
+        second = pd.DataFrame({"id": [2], "value": ["b"]})
+        export_dataframe_to_sqlite(first, output, "items", if_exists=IfExists.REPLACE)
+        export_dataframe_to_sqlite(second, output, "items", if_exists=IfExists.APPEND)
+        with sqlite3.connect(output) as conn:
+            result = pd.read_sql(  # type: ignore[reportUnknownMemberType]
+                "SELECT id, value FROM items ORDER BY id",
+                conn,
+            )
+        pd.testing.assert_frame_equal(
+            result,
+            pd.DataFrame({"id": [1, 2], "value": ["a", "b"]}),
+        )
+
+    def test_deduplicate_keeps_latest_row(self, tmp_path: Path) -> None:
+        """Test deduplication keeps the latest ROWID for key columns."""
+        output = tmp_path / "dedup.db"
+        first = pd.DataFrame({
+            "symbol": ["EURUSD", "EURUSD"],
+            "time": ["2024-01-01", "2024-01-01"],
+            "bid": [1.0, 1.1],
+        })
+        second = pd.DataFrame({
+            "symbol": ["EURUSD"],
+            "time": ["2024-01-01"],
+            "bid": [1.2],
+        })
+        export_dataframe_to_sqlite(
+            first,
+            output,
+            "ticks",
+            if_exists=IfExists.REPLACE,
+            deduplicate_on=("symbol", "time"),
+        )
+        export_dataframe_to_sqlite(
+            second,
+            output,
+            "ticks",
+            if_exists=IfExists.APPEND,
+            deduplicate_on=("symbol", "time"),
+        )
+        with sqlite3.connect(output) as conn:
+            result = pd.read_sql(  # type: ignore[reportUnknownMemberType]
+                "SELECT symbol, time, bid FROM ticks",
+                conn,
+            )
+        pd.testing.assert_frame_equal(
+            result.reset_index(drop=True),
+            pd.DataFrame({
+                "symbol": ["EURUSD"],
+                "time": ["2024-01-01"],
+                "bid": [1.2],
+            }),
+        )
+
+    def test_default_if_exists_appends_without_dropping_rows(
+        self,
+        tmp_path: Path,
+    ) -> None:
+        """Test the default append mode keeps prior rows."""
+        output = tmp_path / "default-append.db"
+        first = pd.DataFrame({"id": [1], "value": ["a"]})
+        second = pd.DataFrame({"id": [2], "value": ["b"]})
+        export_dataframe_to_sqlite(first, output, "items")
+        export_dataframe_to_sqlite(second, output, "items")
+        with sqlite3.connect(output) as conn:
+            result = pd.read_sql(  # type: ignore[reportUnknownMemberType]
+                "SELECT id, value FROM items ORDER BY id",
+                conn,
+            )
+        pd.testing.assert_frame_equal(
+            result,
+            pd.DataFrame({"id": [1, 2], "value": ["a", "b"]}),
+        )
+
+    def test_writes_index_with_label(self, tmp_path: Path) -> None:
+        """Test optional index export with a custom label."""
+        output = tmp_path / "index.db"
+        frame = pd.DataFrame(
+            {"value": [1.0]}, index=pd.Index(["EURUSD"], name="symbol")
+        )
+        export_dataframe_to_sqlite(
+            frame,
+            output,
+            "margins",
+            if_exists=IfExists.REPLACE,
+            index=True,
+            index_label="symbol",
+        )
+        with sqlite3.connect(output) as conn:
+            result = pd.read_sql(  # type: ignore[reportUnknownMemberType]
+                "SELECT symbol, value FROM margins",
+                conn,
+            )
+        pd.testing.assert_frame_equal(
+            result,
+            pd.DataFrame({"symbol": ["EURUSD"], "value": [1.0]}),
+        )
+
+
 # ---------------------------------------------------------------------------
 # Parse helpers
 # ---------------------------------------------------------------------------
@@ -166,8 +274,14 @@ class TestParseTimeframe:
         assert parse_timeframe(value) == expected
 
     def test_integer_timeframe(self) -> None:
-        """Test parsing integer timeframe."""
+        """Test parsing supported integer timeframes."""
-        assert parse_timeframe("42") == 42
+        assert parse_timeframe("1") == 1
+        assert parse_timeframe(16385) == 16385
+
+    def test_unsupported_integer_timeframe_raises(self) -> None:
+        """Test that unsupported integer timeframes raise ValueError."""
+        with pytest.raises(ValueError, match="Invalid timeframe"):
+            parse_timeframe("42")
 
     def test_invalid_timeframe_raises(self) -> None:
         """Test that invalid timeframe raises ValueError."""
@@ -180,15 +294,21 @@ class TestParseTickFlags:
 
     @pytest.mark.parametrize(
         ("value", "expected"),
-        [("ALL", 1), ("info", 2), ("TRADE", 4)],
+        [("ALL", -1), ("info", 1), ("TRADE", 2), ("COPY_TICKS_ALL", -1)],
     )
     def test_named_flag(self, value: str, expected: int) -> None:
         """Test parsing named tick flags."""
         assert parse_tick_flags(value) == expected
 
     def test_integer_flag(self) -> None:
-        """Test parsing integer tick flag."""
+        """Test parsing supported integer tick flags."""
-        assert parse_tick_flags("7") == 7
+        assert parse_tick_flags("-1") == -1
+        assert parse_tick_flags(2) == 2
+
+    def test_unsupported_integer_flag_raises(self) -> None:
+        """Test that unsupported integer tick flags raise ValueError."""
+        with pytest.raises(ValueError, match="Invalid tick flags"):
+            parse_tick_flags("7")
 
     def test_invalid_flag_raises(self) -> None:
         """Test that invalid flag raises ValueError."""
@@ -247,8 +367,11 @@ class TestConstants:
             assert key in TIMEFRAME_MAP
 
     def test_tick_flag_map_has_expected_keys(self) -> None:
-        """Test that TICK_FLAG_MAP contains standard flags."""
+        """Test that TICK_FLAG_MAP contains standard flags with MT5 values."""
-        assert set(TICK_FLAG_MAP) == {"ALL", "INFO", "TRADE"}
+        assert {"ALL", "INFO", "TRADE"} <= set(TICK_FLAG_MAP)
+        assert TICK_FLAG_MAP["ALL"] == -1
+        assert TICK_FLAG_MAP["INFO"] == 1
+        assert TICK_FLAG_MAP["TRADE"] == 2
 
     @pytest.mark.parametrize(
         ("dataset", "expected"),
@@ -295,26 +418,48 @@ class TestTimeframeType:
         """Test converting a string to timeframe integer."""
         assert TIMEFRAME_TYPE.convert("H1", None, None) == 16385
 
-    def test_convert_int_passthrough(self) -> None:
+    def test_convert_int(self) -> None:
-        """Test that integer values pass through unchanged."""
+        """Test converting supported integer timeframe values."""
-        assert TIMEFRAME_TYPE.convert(42, None, None) == 42
+        assert TIMEFRAME_TYPE.convert(16385, None, None) == 16385
+
+    def test_convert_unsupported_int(self) -> None:
+        """Test that unsupported integer values raise BadParameter."""
+        with pytest.raises(Exception, match="Invalid timeframe"):
+            TIMEFRAME_TYPE.convert(42, None, None)
 
     def test_convert_invalid(self) -> None:
         """Test that invalid values raise BadParameter."""
         with pytest.raises(Exception, match="Invalid timeframe"):
             TIMEFRAME_TYPE.convert("bad", None, None)
 
+    @pytest.mark.parametrize("value", [True, False, None, 1.5])
+    def test_convert_invalid_types(self, value: object) -> None:
+        """Test that bool, float, and None values raise BadParameter."""
+        with pytest.raises(Exception, match="Invalid timeframe"):
+            TIMEFRAME_TYPE.convert(value, None, None)
+
 
 class TestTickFlagsType:
     """Tests for _TickFlagsType."""
 
     def test_convert_string(self) -> None:
         """Test converting a string to tick flags integer."""
-        assert TICK_FLAGS_TYPE.convert("ALL", None, None) == 1
+        assert TICK_FLAGS_TYPE.convert("ALL", None, None) == -1
 
-    def test_convert_int_passthrough(self) -> None:
+    def test_convert_int(self) -> None:
-        """Test that integer values pass through unchanged."""
+        """Test converting supported integer tick flag values."""
-        assert TICK_FLAGS_TYPE.convert(7, None, None) == 7
+        assert TICK_FLAGS_TYPE.convert(2, None, None) == 2
+
+    def test_convert_unsupported_int(self) -> None:
+        """Test that unsupported integer values raise BadParameter."""
+        with pytest.raises(Exception, match="Invalid tick flags"):
+            TICK_FLAGS_TYPE.convert(7, None, None)
+
+    @pytest.mark.parametrize("value", [True, False, None, 1.5])
+    def test_convert_invalid_types(self, value: object) -> None:
+        """Test that bool, float, and None values raise BadParameter."""
+        with pytest.raises(Exception, match="Invalid tick flags"):
+            TICK_FLAGS_TYPE.convert(value, None, None)
 
     def test_convert_invalid(self) -> None:
         """Test that invalid values raise BadParameter."""

uv.lock

@@ -487,7 +487,7 @@ wheels = [
 
 [[package]]
 name = "mt5cli"
-version = "0.4.2"
+version = "0.7.1"
 source = { editable = "." }
 dependencies = [
     { name = "click" },
@@ -513,7 +513,7 @@ dev = [
 [package.metadata]
 requires-dist = [
     { name = "click", specifier = ">=8.1.0" },
-    { name = "pdmt5", specifier = ">=0.2.3" },
+    { name = "pdmt5", specifier = ">=0.3.0" },
     { name = "pyarrow", specifier = ">=19.0.0" },
     { name = "typer", specifier = ">=0.15.0" },
 ]
@@ -684,16 +684,16 @@ wheels = [
 
 [[package]]
 name = "pdmt5"
-version = "0.2.3"
+version = "0.3.0"
 source = { registry = "https://pypi.org/simple" }
 dependencies = [
     { name = "metatrader5", marker = "sys_platform == 'win32'" },
     { name = "pandas" },
     { name = "pydantic" },
 ]
-sdist = { url = "https://files.pythonhosted.org/packages/02/25/52d9d954504ccdd0fe91f715ab74c424d61234b237cc4160d3ebe20070f1/pdmt5-0.2.3.tar.gz", hash = "sha256:21384f5826fb0125fee3f93c90b108340f55ab53b1c819d229ceac162289d2ec", size = 226665, upload-time = "2026-02-05T13:28:21.071Z" }
+sdist = { url = "https://files.pythonhosted.org/packages/bf/cc/c8fa3a01e0e34178fec8527992f7bb8eda5881477ce23aaacaa9b2ef7bec/pdmt5-0.3.0.tar.gz", hash = "sha256:bb612d5c2695eafac9b2a7b74756e13bd383d7e5517bd90c9a2efa92492c484c", size = 215100, upload-time = "2026-06-11T13:26:46.976Z" }
 wheels = [
-    { url = "https://files.pythonhosted.org/packages/c1/75/c5e52a9cf459b85b2dd52f83e70857571b1b45805c9fe610b3959a26ac15/pdmt5-0.2.3-py3-none-any.whl", hash = "sha256:f92246a05cfc3b7feb3ab0cc5b48768a4d84aad6b02e7a68060948f5828718a1", size = 22967, upload-time = "2026-02-05T13:28:19.523Z" },
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