package integration

import (
	"context"
	"math/big"
	"testing"
	"time"

	"github.com/ethereum/go-ethereum/common"
	"github.com/ethereum/go-ethereum/core/types"
	"github.com/fraktal/mev-beta/internal/config"
	"github.com/fraktal/mev-beta/internal/logger"
	"github.com/fraktal/mev-beta/pkg/events"
	"github.com/fraktal/mev-beta/pkg/market"
	"github.com/fraktal/mev-beta/pkg/scanner"
	"github.com/stretchr/testify/assert"
)

func TestPipelineIntegration(t *testing.T) {
	// Create test config
	cfg := &config.BotConfig{
		MaxWorkers:         2,
		ChannelBufferSize:  5,
		MinProfitThreshold: 10.0,
	}

	// Create test logger
	logger := logger.New("info", "text", "")

	// Create market manager
	marketMgr := market.NewMarketManager(&config.UniswapConfig{
		Cache: config.CacheConfig{
			Expiration: 300,
			MaxSize:    10000,
		},
	}, logger)

	// Create market scanner
	scanner := scanner.NewMarketScanner(cfg, logger)

	// Create pipeline
	pipeline := market.NewPipeline(cfg, logger, marketMgr, scanner, nil)

	// Add default stages
	pipeline.AddDefaultStages()

	// Create test transactions
	transactions := make([]*types.Transaction, 0)

	// Create a transaction that interacts with a DEX
	to := common.HexToAddress("0x88e6A0c2dDD26FEEb64F039a2c41296FcB3f5640") // Uniswap V3 pool
	tx := types.NewTransaction(0, to, big.NewInt(0), 0, big.NewInt(0), nil)
	transactions = append(transactions, tx)

	// Process transactions through the pipeline
	ctx := context.Background()
	blockNumber := uint64(12345)
	timestamp := uint64(time.Now().Unix())
	err := pipeline.ProcessTransactions(ctx, transactions, blockNumber, timestamp)

	// Verify no error
	assert.NoError(t, err)
}

func TestMarketManagerAndScannerIntegration(t *testing.T) {
	// Create test logger
	logger := logger.New("info", "text", "")

	// Create market manager
	marketMgr := market.NewMarketManager(&config.UniswapConfig{
		Cache: config.CacheConfig{
			Expiration: 300,
			MaxSize:    10000,
		},
	}, logger)

	// Get a pool from the market manager
	ctx := context.Background()
	poolAddress := common.HexToAddress("0x88e6A0c2dDD26FEEb64F039a2c41296FcB3f5640")
	pool, err := marketMgr.GetPool(ctx, poolAddress)

	// Verify no error and pool is not nil
	assert.NoError(t, err)
	assert.NotNil(t, pool)

	// Get pools by tokens
	token0 := common.HexToAddress("0xA0b86991c6218b36c1d19D4a2e9Eb0cE3606eB48") // USDC
	token1 := common.HexToAddress("0xC02aaA39b223FE8D0A0e5C4F27eAD9083C756Cc2") // WETH
	pools := marketMgr.GetPoolsByTokens(token0, token1)

	// Verify pools are returned
	assert.NotNil(t, pools)
}

func TestEventParserAndPipelineIntegration(t *testing.T) {
	// Create test config
	cfg := &config.BotConfig{
		MaxWorkers:        2,
		ChannelBufferSize: 5,
	}

	// Create test logger
	logger := logger.New("info", "text", "")

	// Create market manager
	marketMgr := market.NewMarketManager(&config.UniswapConfig{
		Cache: config.CacheConfig{
			Expiration: 300,
			MaxSize:    10000,
		},
	}, logger)

	// Create market scanner
	scnr := scanner.NewMarketScanner(cfg, logger)

	// Create pipeline
	pipe := market.NewPipeline(cfg, logger, marketMgr, scnr, nil)
	pipe.AddDefaultStages()

	// Create event parser
	parser := events.NewEventParser()

	// Create a transaction that interacts with a DEX
	to := common.HexToAddress("0x88e6A0c2dDD26FEEb64F039a2c41296FcB3f5640") // Uniswap V3 pool
	tx := types.NewTransaction(0, to, big.NewInt(0), 0, big.NewInt(0), nil)
	blockNumber := uint64(12345)
	timestamp := uint64(time.Now().Unix())

	// Parse the transaction
	parsedEvents, err := parser.ParseTransaction(tx, blockNumber, timestamp)
	assert.NoError(t, err)
	assert.Len(t, parsedEvents, 1)

	// Verify the parsed event
	event := parsedEvents[0]
	assert.Equal(t, events.Swap, event.Type)
	assert.Equal(t, "UniswapV3", event.Protocol)
	assert.Equal(t, to, event.PoolAddress)
	assert.Equal(t, blockNumber, event.BlockNumber)
	assert.Equal(t, timestamp, event.Timestamp)
}