/**
 * Liquidity Admin API Routes
 * Provides endpoints for liquidity engine management and routing configuration
 */

import { Router } from 'express';
// import { LiquidityEngine, SwapProvider, SwapSize } from '../../../../smom-dbis-138/services/liquidity-engine/liquidity-engine.service';

const router = Router();

/**
 * GET /api/admin/liquidity/decision-map
 * Get current decision logic map
 */
router.get('/decision-map', async (req, res) => {
  try {
    // In production, load from LiquidityEngine service
    return res.json({
      sizeThresholds: {
        small: { max: 10000, providers: ['UniswapV3', 'Dodoex'] },
        medium: { max: 100000, providers: ['Dodoex', 'Balancer', 'UniswapV3'] },
        large: { providers: ['Dodoex', 'Curve', 'Balancer'] },
      },
      slippageRules: {
        lowSlippage: { max: 0.1, prefer: 'Dodoex' },
        mediumSlippage: { max: 0.5, prefer: 'Balancer' },
        highSlippage: { prefer: 'Curve' },
      },
      liquidityRules: {
        highLiquidity: { min: 1000000, prefer: 'UniswapV3' },
        mediumLiquidity: { prefer: 'Dodoex' },
        lowLiquidity: { prefer: 'Curve' },
      },
    });
  } catch (error) {
    return res.status(500).json({ error: 'Failed to get decision map' });
  }
});

/**
 * PUT /api/admin/liquidity/decision-map
 * Update decision logic map
 */
router.put('/decision-map', async (req, res) => {
  try {
    const { sizeThresholds, slippageRules, liquidityRules } = req.body;
    // In production, update LiquidityEngine service
    return res.json({ success: true });
  } catch (error) {
    return res.status(500).json({ error: 'Failed to update decision map' });
  }
});

/**
 * GET /api/admin/liquidity/quotes
 * Get quotes from all providers for comparison (includes Dodoex when bridge quote service is configured)
 */
router.get('/quotes', async (req, res) => {
  try {
    const { inputToken, outputToken, amount } = req.query;
    const bridgeQuoteUrl = process.env.BRIDGE_QUOTE_SERVICE_URL;
    if (bridgeQuoteUrl && inputToken && outputToken && amount) {
      try {
        const response = await fetch(`${bridgeQuoteUrl.replace(/\/$/, '')}/api/bridge/quote`, {
          method: 'POST',
          headers: { 'Content-Type': 'application/json' },
          body: JSON.stringify({
            token: inputToken,
            amount: String(amount),
            destinationChainId: 138,
            destinationType: 0,
            destinationAddress: '0x0000000000000000000000000000000000000000',
          }),
        });
        if (response.ok) {
          const data = (await response.json()) as { sourceSwapQuote?: string };
          const quotes: Array<{ provider: string; amountOut: string }> = [];
          if (data.sourceSwapQuote) quotes.push({ provider: 'Dodoex', amountOut: data.sourceSwapQuote });
          return res.json(quotes.length ? quotes : []);
        }
      } catch {
        // Fall through to empty array
      }
    }
    return res.json([]);
  } catch (error) {
    return res.status(500).json({ error: 'Failed to get quotes' });
  }
});

/**
 * GET /api/admin/liquidity/routing-stats
 * Get routing statistics
 */
router.get('/routing-stats', async (req, res) => {
  try {
    return res.json({
      totalSwaps: 0,
      byProvider: {
        UniswapV3: 0,
        Dodoex: 0,
        Balancer: 0,
        Curve: 0,
        OneInch: 0,
      },
      averageSlippage: 0,
      averageGasUsed: 0,
    });
  } catch (error) {
    return res.status(500).json({ error: 'Failed to get routing stats' });
  }
});

/**
 * POST /api/admin/liquidity/simulate-route
 * Simulate routing decision for a swap
 */
router.post('/simulate-route', async (req, res) => {
  try {
    const { inputToken, outputToken, amount } = req.body;
    // In production, call LiquidityEngine.findBestRoute
    return res.json({
      provider: 'Dodoex',
      expectedOutput: amount,
      slippage: 0.1,
      confidence: 95,
      reasoning: 'Selected Dodoex for medium swap based on decision logic',
    });
  } catch (error) {
    return res.status(500).json({ error: 'Failed to simulate route' });
  }
});

export default router;

