package listing

import (
	"context"
	"strings"

	"hfb_sys/backend/internal/model"
)

func (r *Repository) ReceiveRatioDeltaBySiteCode(ctx context.Context, siteCode string) float64 {
	siteCode = strings.TrimSpace(siteCode)
	if r == nil || r.db == nil || siteCode == "" {
		return 0
	}
	var delta float64
	_ = r.db.WithContext(ctx).Model(&model.DistributionSite{}).
		Select("COALESCE(receive_ratio_delta, 0)").
		Where("site_code = ? AND status = 'active'", siteCode).
		Limit(1).
		Scan(&delta)
	return NormalizeSiteReceiveRatioDelta(delta)
}

func (r *Repository) ResolveReceiveRatioDelta(ctx context.Context, listingID uint64, siteCode string) (float64, bool) {
	if code := strings.TrimSpace(siteCode); code != "" {
		return r.ReceiveRatioDeltaBySiteCode(ctx, code), true
	}
	if r == nil || r.db == nil || listingID == 0 {
		return 0, false
	}
	var siteID *uint64
	if err := r.db.WithContext(ctx).Model(&model.RentalListing{}).
		Select("distribution_site_id").
		Where("id = ?", listingID).
		Limit(1).
		Scan(&siteID).Error; err != nil || siteID == nil || *siteID == 0 {
		return 0, false
	}
	var delta float64
	_ = r.db.WithContext(ctx).Model(&model.DistributionSite{}).
		Select("COALESCE(receive_ratio_delta, 0)").
		Where("id = ? AND status = 'active'", *siteID).
		Limit(1).
		Scan(&delta)
	return NormalizeSiteReceiveRatioDelta(delta), true
}