// Package parsers defines the parser interface and factory for protocol-specific parsers
package parsers

import (
	"context"

	"github.com/ethereum/go-ethereum/core/types"

	mevtypes "github.com/your-org/mev-bot/pkg/types"
)

// Parser defines the interface for protocol-specific parsers
type Parser interface {
	// ParseLog parses a single log entry into a SwapEvent
	ParseLog(ctx context.Context, log types.Log, tx *types.Transaction) (*mevtypes.SwapEvent, error)

	// ParseReceipt parses all relevant logs from a transaction receipt
	ParseReceipt(ctx context.Context, receipt *types.Receipt, tx *types.Transaction) ([]*mevtypes.SwapEvent, error)

	// SupportsLog checks if this parser can handle the given log
	SupportsLog(log types.Log) bool

	// Protocol returns the protocol type this parser handles
	Protocol() mevtypes.ProtocolType
}

// Factory creates protocol-specific parsers
type Factory interface {
	// GetParser returns a parser for the given protocol
	GetParser(protocol mevtypes.ProtocolType) (Parser, error)

	// ParseLog routes a log to the appropriate parser
	ParseLog(ctx context.Context, log types.Log, tx *types.Transaction) (*mevtypes.SwapEvent, error)

	// ParseTransaction parses all swap events from a transaction
	ParseTransaction(ctx context.Context, tx *types.Transaction, receipt *types.Receipt) ([]*mevtypes.SwapEvent, error)

	// RegisterParser registers a new parser for a protocol
	RegisterParser(protocol mevtypes.ProtocolType, parser Parser) error
}