"""Deep tests for nexquant_parallel.py — property-based, state transitions, edge cases.

Tests RunState, ParallelRunner configuration, environment building,
command building, and API key loading logic.
"""

from __future__ import annotations

import os
import signal
import sys
import tempfile
from datetime import datetime
from pathlib import Path
from unittest.mock import MagicMock, patch

import pytest

PROJECT_ROOT = Path(__file__).parent.parent.parent
sys.path.insert(0, str(PROJECT_ROOT))

from hypothesis import given, settings, HealthCheck
from hypothesis import strategies as st


@pytest.fixture
def runstate():
    from scripts.nexquant_parallel import RunState
    return RunState(run_id=1, api_key_idx=0, model="local")


class TestRunState:
    def test_init_defaults(self, runstate):
        assert runstate.run_id == 1
        assert runstate.api_key_idx == 0
        assert runstate.model == "local"
        assert runstate.status == "pending"
        assert runstate.process is None
        assert runstate.exit_code is None

    def test_elapsed_not_started(self, runstate):
        assert runstate.elapsed == "--:--:--"

    def test_elapsed_running(self, runstate):
        runstate.start_time = datetime(2024, 1, 1, 12, 0, 0)
        with patch("scripts.nexquant_parallel.datetime") as mock_dt:
            mock_dt.now.return_value = datetime(2024, 1, 1, 13, 30, 45)
            assert runstate.elapsed == "01:30:45"

    def test_elapsed_completed(self, runstate):
        runstate.start_time = datetime(2024, 1, 1, 12, 0, 0)
        runstate.end_time = datetime(2024, 1, 1, 14, 5, 30)
        assert runstate.elapsed == "02:05:30"

    def test_elapsed_over_24h(self, runstate):
        runstate.start_time = datetime(2024, 1, 1, 0, 0, 0)
        runstate.end_time = datetime(2024, 1, 3, 6, 30, 15)
        assert runstate.elapsed == "54:30:15"

    @pytest.mark.parametrize("status,icon", [
        ("pending", "⏳"), ("running", "🔄"), ("success", "✅"),
        ("failed", "❌"), ("stopped", "⏹️"),
    ])
    def test_status_icons(self, runstate, status, icon):
        runstate.status = status
        assert runstate.status_icon == icon

    def test_unknown_status_icon(self, runstate):
        runstate.status = "weird_status"
        assert runstate.status_icon == "❓"

    @given(
        hours=st.integers(min_value=0, max_value=1000),
        mins=st.integers(min_value=0, max_value=59),
        secs=st.integers(min_value=0, max_value=59),
    )
    @settings(max_examples=200, deadline=5000,
              suppress_health_check=[HealthCheck.function_scoped_fixture])
    def test_elapsed_format_property(self, runstate, hours, mins, secs):
        """Elapsed time format must always be HH:MM:SS with zero-padding."""
        runstate.start_time = datetime(2024, 1, 1, 0, 0, 0)
        total_secs = hours * 3600 + mins * 60 + secs
        if total_secs < 365 * 86400:
            from datetime import timedelta
            runstate.end_time = runstate.start_time + timedelta(seconds=total_secs)
            e = runstate.elapsed
            parts = e.split(":")
            assert len(parts) == 3
            assert len(parts[1]) == 2 and len(parts[2]) == 2  # mins and secs always 2 digits
            assert all(p.isdigit() for p in parts)
            assert int(parts[0]) == hours


class TestParallelRunnerConfig:
    @patch.dict(os.environ, {}, clear=True)
    def test_load_api_keys_openrouter(self):
        from scripts.nexquant_parallel import ParallelRunner
        with patch.dict(os.environ, {
            "OPENROUTER_API_KEY": "sk-key1",
            "OPENROUTER_API_KEY_2": "sk-key2",
        }):
            runner = ParallelRunner(num_runs=2, num_api_keys=2, model="openrouter")
            keys = runner.api_keys
            assert len(keys) == 2
            assert keys[0].startswith("sk-")

    @patch.dict(os.environ, {}, clear=True)
    def test_load_api_keys_local(self):
        from scripts.nexquant_parallel import ParallelRunner
        runner = ParallelRunner(num_runs=1, num_api_keys=1, model="local")
        assert runner.api_keys == ["local"]

    @patch.dict(os.environ, {}, clear=True)
    def test_load_api_keys_round_robin(self):
        from scripts.nexquant_parallel import ParallelRunner
        runner = ParallelRunner(num_runs=5, num_api_keys=2, model="local")
        assert len(runner.runs) == 5
        idxs = [r.api_key_idx for r in runner.runs]
        assert idxs == [0, 1, 0, 1, 0]

    @patch.dict(os.environ, {}, clear=True)
    def test_build_env_local_model(self):
        from scripts.nexquant_parallel import ParallelRunner, RunState
        with patch.dict(os.environ, {
            "OPENAI_API_KEY": "local",
            "OPENAI_API_BASE": "http://localhost:8081/v1",
            "CHAT_MODEL": "openai/qwen3.5-35b",
        }):
            runner = ParallelRunner(num_runs=1, num_api_keys=1, model="local")
            rs = RunState(run_id=1, api_key_idx=0, model="local")
            env = runner._build_env(rs)
            assert env["OPENAI_API_KEY"] == "local"
            assert "localhost:8081" in env["OPENAI_API_BASE"]
            assert env["CHAT_MODEL"] == "openai/qwen3.5-35b"

    @patch.dict(os.environ, {}, clear=True)
    def test_build_env_openrouter(self):
        from scripts.nexquant_parallel import ParallelRunner, RunState
        with patch.dict(os.environ, {
            "OPENROUTER_API_KEY": "sk-test",
            "OPENROUTER_API_KEY_2": "sk-test2",
        }):
            runner = ParallelRunner(num_runs=1, num_api_keys=2, model="openrouter")
            rs = RunState(run_id=1, api_key_idx=0, model="openrouter")
            env = runner._build_env(rs)
            assert "openrouter" in env["OPENAI_API_BASE"]

    @patch.dict(os.environ, {}, clear=True)
    def test_build_env_sets_workspace(self):
        from scripts.nexquant_parallel import ParallelRunner, RunState
        runner = ParallelRunner(num_runs=1, num_api_keys=1, model="local")
        rs = RunState(run_id=42, api_key_idx=0, model="local")
        env = runner._build_env(rs)
        assert "run42" in env.get("RD_AGENT_WORKSPACE", "")
        assert env["PARALLEL_RUN_ID"] == "42"

    @patch.dict(os.environ, {}, clear=True)
    def test_build_command(self):
        from scripts.nexquant_parallel import ParallelRunner, RunState
        runner = ParallelRunner(num_runs=1, num_api_keys=1, model="local")
        rs = RunState(run_id=7, api_key_idx=0, model="local")
        cmd = runner._build_command(rs)
        assert "nexquant.py" in cmd[1] or "nexquant" in cmd[1]
        assert "quant" in cmd
        assert "--model" in cmd
        assert "local" in cmd
        assert "7" in [str(a) for a in cmd]

    @patch.dict(os.environ, {}, clear=True)
    def test_parallel_runner_init_counts(self):
        from scripts.nexquant_parallel import ParallelRunner
        for n in [1, 3, 10]:
            runner = ParallelRunner(num_runs=n, num_api_keys=2, model="local")
            assert len(runner.runs) == n
            assert runner.num_runs == n


class TestParallelRunnerEdgeCases:
    @patch.dict(os.environ, {}, clear=True)
    def test_max_runs_limit(self):
        from scripts.nexquant_parallel import ParallelRunner
        runner = ParallelRunner(num_runs=100, num_api_keys=1, model="local")
        assert len(runner.runs) == 100

    @patch.dict(os.environ, {}, clear=True)
    def test_api_keys_empty_uses_local(self):
        from scripts.nexquant_parallel import ParallelRunner
        runner = ParallelRunner(num_runs=1, num_api_keys=2, model="openrouter")
        assert len(runner.api_keys) >= 1

    @patch.dict(os.environ, {}, clear=True)
    def test_build_env_preserves_existing_env(self, monkeypatch):
        monkeypatch.setenv("MY_CUSTOM_VAR", "custom_value")
        from scripts.nexquant_parallel import ParallelRunner, RunState
        runner = ParallelRunner(num_runs=1, num_api_keys=1, model="local")
        rs = RunState(run_id=1, api_key_idx=0, model="local")
        env = runner._build_env(rs)
        assert "MY_CUSTOM_VAR" in env