package scanner

import (
	"github.com/fraktal/mev-beta/internal/config"
	"github.com/fraktal/mev-beta/internal/logger"
	"github.com/fraktal/mev-beta/pkg/cache"
	"github.com/fraktal/mev-beta/pkg/contracts"
	"github.com/fraktal/mev-beta/pkg/database"
)

// NewMarketScanner provides a backwards-compatible constructor that accepts
// optional dependencies in the order (contract executor, database, reserve cache, ...).
// It falls back to sane defaults when values are omitted so legacy tests and
// tooling can continue to compile against the public API while more advanced
// callers should use NewScanner directly for full control.
func NewMarketScanner(
	cfg *config.BotConfig,
	log *logger.Logger,
	extras ...interface{},
) *Scanner {
	var contractExecutor *contracts.ContractExecutor
	var db *database.Database
	var reserveCache *cache.ReserveCache

	if len(extras) > 0 {
		if v, ok := extras[0].(*contracts.ContractExecutor); ok {
			contractExecutor = v
		}
	}

	if len(extras) > 1 {
		if v, ok := extras[1].(*database.Database); ok {
			db = v
		}
	}

	if len(extras) > 2 {
		if v, ok := extras[2].(*cache.ReserveCache); ok {
			reserveCache = v
		}
	}

	// Additional parameters beyond the reserve cache are currently ignored but
	// accepted to keep existing call sites compiling during the migration.

	return NewScanner(cfg, log, contractExecutor, db, reserveCache)
}