use crate::swqos::common::default_http_client_builder;
use crate::swqos::common::poll_transaction_confirmation;
use crate::swqos::common::serialize_transaction_and_encode;
use crate::swqos::serialization;
use rand::seq::IndexedRandom;
use reqwest::Client;
use std::{sync::Arc, time::Instant};

use solana_transaction_status::UiTransactionEncoding;
use std::time::Duration;

use crate::swqos::SwqosClientTrait;
use crate::swqos::{SwqosType, TradeType};
use anyhow::Result;
use solana_sdk::transaction::VersionedTransaction;

use crate::{common::SolanaRpcClient, constants::swqos::BLOX_TIP_ACCOUNTS};

#[derive(Clone)]
pub struct BloxrouteClient {
    pub endpoint: String,
    pub auth_token: String,
    pub rpc_client: Arc<SolanaRpcClient>,
    pub http_client: Client,
}

#[async_trait::async_trait]
impl SwqosClientTrait for BloxrouteClient {
    async fn send_transaction(
        &self,
        trade_type: TradeType,
        transaction: &VersionedTransaction,
        wait_confirmation: bool,
    ) -> Result<()> {
        self.send_transaction(trade_type, transaction, wait_confirmation).await
    }

    async fn send_transactions(
        &self,
        trade_type: TradeType,
        transactions: &Vec<VersionedTransaction>,
        wait_confirmation: bool,
    ) -> Result<()> {
        self.send_transactions(trade_type, transactions, wait_confirmation).await
    }

    fn get_tip_account(&self) -> Result<String> {
        let tip_account = *BLOX_TIP_ACCOUNTS
            .choose(&mut rand::rng())
            .or_else(|| BLOX_TIP_ACCOUNTS.first())
            .unwrap();
        Ok(tip_account.to_string())
    }

    fn get_swqos_type(&self) -> SwqosType {
        SwqosType::Bloxroute
    }
}

impl BloxrouteClient {
    pub fn new(rpc_url: String, endpoint: String, auth_token: String) -> Self {
        let rpc_client = SolanaRpcClient::new(rpc_url);
        let http_client = default_http_client_builder()
            .pool_idle_timeout(Duration::from_secs(120))
            .pool_max_idle_per_host(256)
            .build()
            .unwrap();
        Self { rpc_client: Arc::new(rpc_client), endpoint, auth_token, http_client }
    }

    pub async fn send_transaction(
        &self,
        trade_type: TradeType,
        transaction: &VersionedTransaction,
        wait_confirmation: bool,
    ) -> Result<()> {
        let start_time = Instant::now();
        let (content, signature) =
            serialize_transaction_and_encode(transaction, UiTransactionEncoding::Base64)?;

        // Single format! for body to avoid json! + to_string() double allocation
        let body = format!(
            r#"{{"transaction":{{"content":"{}"}},"frontRunningProtection":false,"useStakedRPCs":true}}"#,
            content
        );

        let endpoint = format!("{}/api/v2/submit", self.endpoint);
        let response_text = self
            .http_client
            .post(&endpoint)
            .body(body)
            .header("Content-Type", "application/json")
            .header("Authorization", self.auth_token.as_str())
            .send()
            .await?
            .text()
            .await?;

        // Parse with from_str to avoid extra wait from .json().await
        if let Ok(response_json) = serde_json::from_str::<serde_json::Value>(&response_text) {
            if crate::common::sdk_log::sdk_log_enabled() {
                if response_json.get("result").is_some() {
                    crate::common::sdk_log::log_swqos_submitted("bloxroute", trade_type, start_time.elapsed());
                } else if let Some(_error) = response_json.get("error") {
                    eprintln!(" [bloxroute] {} submission failed after {:?}: {:?}", trade_type, start_time.elapsed(), _error);
                }
            }
        } else if crate::common::sdk_log::sdk_log_enabled() {
            crate::common::sdk_log::log_swqos_submission_failed("bloxroute", trade_type, start_time.elapsed(), response_text);
        }

        let start_time: Instant = Instant::now();
        match poll_transaction_confirmation(&self.rpc_client, signature, wait_confirmation).await {
            Ok(_) => (),
            Err(e) => {
                if crate::common::sdk_log::sdk_log_enabled() {
                    println!(" signature: {:?}", signature);
                    println!(
                        " [{:width$}] {} confirmation failed: {:?}",
                        "bloxroute",
                        trade_type,
                        start_time.elapsed(),
                        width = crate::common::sdk_log::SWQOS_LABEL_WIDTH
                    );
                }
                return Err(e);
            }
        }
        if wait_confirmation && crate::common::sdk_log::sdk_log_enabled() {
            println!(" signature: {:?}", signature);
            println!(" [{:width$}] {} confirmed: {:?}", "bloxroute", trade_type, start_time.elapsed(), width = crate::common::sdk_log::SWQOS_LABEL_WIDTH);
        }

        Ok(())
    }

    pub async fn send_transactions(
        &self,
        trade_type: TradeType,
        transactions: &Vec<VersionedTransaction>,
        _wait_confirmation: bool,
    ) -> Result<()> {
        let start_time = Instant::now();

        let contents = serialization::serialize_transactions_batch_sync(
            transactions.as_slice(),
            UiTransactionEncoding::Base64,
        )?;
        let entries: String = contents
            .iter()
            .map(|c| format!(r#"{{"transaction":{{"content":"{}"}}}}"#, c))
            .collect::<Vec<_>>()
            .join(",");
        let body = format!(r#"{{"entries":[{}]}}"#, entries);

        let endpoint = format!("{}/api/v2/submit-batch", self.endpoint);
        let response_text = self
            .http_client
            .post(&endpoint)
            .body(body)
            .header("Content-Type", "application/json")
            .header("Authorization", self.auth_token.as_str())
            .send()
            .await?
            .text()
            .await?;

        if crate::common::sdk_log::sdk_log_enabled() {
            if let Ok(response_json) = serde_json::from_str::<serde_json::Value>(&response_text) {
                if response_json.get("result").is_some() {
                    println!(" bloxroute {} submitted: {:?}", trade_type, start_time.elapsed());
                } else if let Some(_error) = response_json.get("error") {
                    eprintln!(" bloxroute {} submission failed after {:?}: {:?}", trade_type, start_time.elapsed(), _error);
                }
            }
        }

        Ok(())
    }
}