package ebay

import (
	"strings"
	"time"
)

// SearchParams is the input to a single Browse API item_summary/search call.
// It is provider-specific and is carried as the opaque input payload of a
// scheduler plan, mirroring how Apify actor inputs are carried.
type SearchParams struct {
	// MarketplaceID is an eBay marketplace identifier such as EBAY_US.
	MarketplaceID string
	// Query is the keyword search string. Required; the Browse API rejects
	// an empty q.
	Query string
	// ListingType is Veola's vocabulary ("all", "bin"/"buy_it_now",
	// "auction"); it is mapped to a buyingOptions filter.
	ListingType string
	// Condition is Veola's condition vocabulary ("new", "used",
	// "refurbished", "parts"); it is mapped to a conditionIds filter. Empty
	// means no condition filter.
	Condition string
	// Region is an ISO 3166-1 alpha-2 country code constraining item
	// location (mapped to the itemLocationCountry filter). Empty means no
	// location filter.
	Region string
	// Limit caps the number of results requested (Browse API max is 200).
	Limit int
}

// Listing is one normalized active eBay listing. The scheduler converts these
// into the shared apify.UnifiedResult shape so the rest of the pipeline
// (dedup, filter, alert) is provider-agnostic.
type Listing struct {
	Title    string
	Price    float64
	Currency string
	URL      string
	Store    string
	ImageURL string
	// EndsAt is the auction end time as reported by the Browse API
	// (itemEndDate). Nil for fixed-price ("Buy It Now") listings, which
	// don't have one.
	EndsAt *time.Time
}

// MarketplaceID maps a Veola marketplace string (e.g. "ebay.com",
// "ebay.co.uk") to an eBay Browse API marketplace identifier. Unknown or
// bare "ebay" values fall back to EBAY_US.
func MarketplaceID(marketplace string) string {
	m := strings.ToLower(strings.TrimSpace(marketplace))
	switch {
	case strings.Contains(m, "ebay.co.uk"):
		return "EBAY_GB"
	case strings.Contains(m, "ebay.de"):
		return "EBAY_DE"
	case strings.Contains(m, "ebay.com.au"):
		return "EBAY_AU"
	case strings.Contains(m, "ebay.ca"):
		return "EBAY_CA"
	case strings.Contains(m, "ebay.fr"):
		return "EBAY_FR"
	case strings.Contains(m, "ebay.it"):
		return "EBAY_IT"
	case strings.Contains(m, "ebay.es"):
		return "EBAY_ES"
	case strings.Contains(m, "ebay.at"):
		return "EBAY_AT"
	case strings.Contains(m, "ebay.ch"):
		return "EBAY_CH"
	case strings.Contains(m, "ebay.ie"):
		return "EBAY_IE"
	case strings.Contains(m, "ebay.nl"):
		return "EBAY_NL"
	case strings.Contains(m, "ebay.com.hk"):
		return "EBAY_HK"
	case strings.Contains(m, "ebay.com.sg"):
		return "EBAY_SG"
	case strings.Contains(m, "ebay.com.my"):
		return "EBAY_MY"
	case strings.Contains(m, "ebay.ph"):
		return "EBAY_PH"
	case strings.Contains(m, "ebay.pl"):
		return "EBAY_PL"
	default:
		// "ebay.com" and any bare/unknown eBay marketplace.
		return "EBAY_US"
	}
}

// IsEbayMarketplace reports whether a Veola marketplace string should be
// polled through the official eBay Browse API.
func IsEbayMarketplace(marketplace string) bool {
	return strings.Contains(strings.ToLower(marketplace), "ebay")
}

// buyingOptionsFilter maps Veola's listing-type vocabulary to the Browse API
// "filter" query parameter. An empty string means no filter ("all").
func buyingOptionsFilter(listingType string) string {
	switch strings.ToLower(strings.TrimSpace(listingType)) {
	case "bin", "buy_it_now", "fixed_price":
		return "buyingOptions:{FIXED_PRICE}"
	case "auction":
		return "buyingOptions:{AUCTION}"
	default:
		return ""
	}
}

// conditionIDsFilter maps Veola's condition vocabulary to a Browse API
// "conditionIds" filter clause. Each Veola value expands to the set of eBay
// condition IDs that belong to it (e.g. "new" covers both brand-new and
// new-other). An empty or unknown value yields no filter.
func conditionIDsFilter(condition string) string {
	var ids string
	switch strings.ToLower(strings.TrimSpace(condition)) {
	case "new":
		ids = "1000|1500"
	case "used":
		ids = "3000"
	case "refurbished":
		ids = "2000|2010|2020|2030|2500"
	case "parts":
		ids = "7000"
	default:
		return ""
	}
	return "conditionIds:{" + ids + "}"
}

// itemLocationFilter maps an ISO 3166-1 alpha-2 country code to a Browse API
// "itemLocationCountry" filter clause. An empty value yields no filter.
func itemLocationFilter(region string) string {
	r := strings.ToUpper(strings.TrimSpace(region))
	if r == "" {
		return ""
	}
	return "itemLocationCountry:" + r
}