daa-economy 0.2.1

use crate::qudag_stubs::qudag_exchange;
use crate::qudag_stubs::qudag_exchange;
use crate::qudag_stubs::qudag_exchange;
//! Exchange integration for DAA Economy using QuDAG Exchange

use std::collections::HashMap;
use std::sync::Arc;

use tokio::sync::RwLock;
use serde::{Deserialize, Serialize};
use rust_decimal::Decimal;
use uuid::Uuid;

use crate::{Result, EconomyError};

/// Exchange manager integrating with QuDAG Exchange
pub struct ExchangeManager {
    /// QuDAG exchange instance
    exchange: Exchange,
    
    /// Configuration
    config: ExchangeConfig,
    
    /// Active orders
    orders: Arc<RwLock<HashMap<String, Order>>>,
    
    /// Trade history
    trades: Arc<RwLock<Vec<Trade>>>,
}

impl ExchangeManager {
    /// Create new exchange manager
    pub async fn new(config: ExchangeConfig) -> Result<Self> {
        let exchange = Exchange::new(config.clone()).await
            .map_err(EconomyError::Exchange)?;

        Ok(Self {
            exchange,
            config,
            orders: Arc::new(RwLock::new(HashMap::new())),
            trades: Arc::new(RwLock::new(Vec::new())),
        })
    }

    /// Initialize the exchange
    pub async fn initialize(&mut self) -> Result<()> {
        self.exchange.start().await.map_err(EconomyError::Exchange)?;
        tracing::info!("Exchange manager initialized");
        Ok(())
    }

    /// Place an order
    pub async fn place_order(
        &mut self,
        account_id: String,
        order_type: OrderType,
        base_token: String,
        quote_token: String,
        quantity: Decimal,
        price: Decimal,
    ) -> Result<String> {
        let order_id = Uuid::new_v4().to_string();
        
        // Create order through QuDAG exchange
        let order = self.exchange.place_order(
            order_id.clone(),
            account_id,
            order_type,
            base_token,
            quote_token,
            quantity,
            price,
        ).await.map_err(EconomyError::Exchange)?;

        // Store order
        self.orders.write().await.insert(order_id.clone(), order);
        
        tracing::info!("Placed order: {}", order_id);
        Ok(order_id)
    }

    /// Get trade count
    pub async fn get_trade_count(&self) -> Result<u64> {
        Ok(self.trades.read().await.len() as u64)
    }

    /// Get active order count
    pub async fn get_active_order_count(&self) -> Result<u64> {
        Ok(self.orders.read().await.len() as u64)
    }
}