package promo

import (
	"context"

	promoModel "github.com/perfect-panel/server/internal/model/promo"
	"github.com/perfect-panel/server/internal/svc"
	"github.com/perfect-panel/server/internal/types"
	"github.com/perfect-panel/server/pkg/logger"
)

type GetPromoPriceListLogic struct {
	logger.Logger
	ctx    context.Context
	svcCtx *svc.ServiceContext
}

// Get promo price list
func NewGetPromoPriceListLogic(ctx context.Context, svcCtx *svc.ServiceContext) *GetPromoPriceListLogic {
	return &GetPromoPriceListLogic{
		Logger: logger.WithContext(ctx),
		ctx:    ctx,
		svcCtx: svcCtx,
	}
}

func (l *GetPromoPriceListLogic) GetPromoPriceList(req *types.GetPromoPriceListRequest) (*types.GetPromoPriceListResponse, error) {
	total, list, err := l.svcCtx.PromoModel.QuerySubscribePromoList(l.ctx, promoModel.SubscribePromoFilter{
		Page:        int(req.Page),
		Size:        int(req.Size),
		PromoRuleId: req.PromoRuleId,
	})
	if err != nil {
		l.Errorw("[GetPromoPriceList] Database Error", logger.Field("error", err.Error()))
		return nil, wrapQueryError("get promo price list failed", err)
	}
	resp := &types.GetPromoPriceListResponse{
		Total: total,
		List:  make([]types.PromoPrice, 0, len(list)),
	}
	for _, item := range list {
		var unitPrice int64
		sub, subErr := l.svcCtx.SubscribeModel.FindOne(l.ctx, item.SubscribeId)
		if subErr == nil {
			unitPrice = sub.UnitPrice
		}
		resp.List = append(resp.List, toPriceResponse(item, unitPrice))
	}
	return resp, nil
}