package productlogic

import (
	"code.30cm.net/digimon/app-cloudep-product-service/internal/utils"
	"code.30cm.net/digimon/app-cloudep-product-service/pkg/domain/product"
	"code.30cm.net/digimon/app-cloudep-product-service/pkg/domain/usecase"
	"code.30cm.net/digimon/library-go/errs"
	"context"

	PB "code.30cm.net/digimon/app-cloudep-product-service/gen_result/pb/product"
	"code.30cm.net/digimon/app-cloudep-product-service/internal/svc"

	"github.com/zeromicro/go-zero/core/logx"
)

type CreateItemLogic struct {
	ctx    context.Context
	svcCtx *svc.ServiceContext
	logx.Logger
}

func NewCreateItemLogic(ctx context.Context, svcCtx *svc.ServiceContext) *CreateItemLogic {
	return &CreateItemLogic{
		ctx:    ctx,
		svcCtx: svcCtx,
		Logger: logx.WithContext(ctx),
	}
}

func (l *CreateItemLogic) CreateItem(in *PB.CreateProductItemRequest) (*PB.OKResp, error) {
	insert := &usecase.ProductItems{
		ReferenceID:      in.GetItem().ReferenceId,                                  // 對應的專案 ID
		Name:             in.GetItem().Name,                                         // 名稱
		Description:      utils.EncodeToBase64Snappy(in.GetItem().Description),      // 描述
		ShortDescription: utils.EncodeToBase64Snappy(in.GetItem().ShortDescription), // 封面簡短描述
		IsUnLimit:        in.GetItem().IsUnLimit,                                    // 是否沒有數量上限
		IsFree:           in.GetItem().IsFree,                                       // 是否為免費品項（贈品） -> 開啟就是自訂金額
		Stock:            in.GetItem().Stock,                                        // 庫存總數
		Price:            in.GetItem().Price,                                        // 價格
		SKU:              in.GetItem().Sku,                                          // 型號：對應顯示 Item 的 FK
		SalesCount:       0,                                                         // 已賣出數量(相反，減到零就不能在賣)
	}
	if len(in.GetItem().Media) > 0 {
		// 專案動態內容(圖片或者影片)
		m := make([]usecase.Media, 0, len(in.GetItem().Media))
		for _, item := range in.GetItem().Media {
			m = append(m, usecase.Media{
				URL:  item.Url,
				Type: item.Type,
			})
		}
		insert.Media = m
	}
	if len(in.GetItem().CustomFields) > 0 {
		// 自定義屬性
		c := make([]usecase.CustomFields, 0, len(in.GetItem().CustomFields))
		for _, cItem := range in.GetItem().CustomFields {
			c = append(c, usecase.CustomFields{
				Key:   cItem.Key,
				Value: cItem.Value,
			})
		}
		insert.CustomFields = c
	}
	if len(in.GetItem().Freight) > 0 {
		// 運費
		f := make([]usecase.CustomFields, 0, len(in.GetItem().Freight))
		for _, fItem := range in.GetItem().Freight {
			f = append(f, usecase.CustomFields{
				Key:   fItem.Key,
				Value: fItem.Value,
			})
		}
		insert.Freight = f
	}

	status, e := product.StringToItemStatus(in.GetItem().Status)
	if !e {
		return nil, errs.InvalidFormat("failed to convert string to item status")
	}
	insert.Status = status

	timeSeries, te := product.StringToTimeSeries(in.GetItem().TimeSeries)
	if !te {
		return nil, errs.InvalidFormat("failed to convert string to time series")
	}
	insert.TimeSeries = timeSeries

	err := l.svcCtx.ProductItemUseCase.Create(l.ctx, insert)

	if err != nil {
		return nil, err
	}

	return &PB.OKResp{}, nil
}