package logic

import (
	"context"
	"fmt"

	"muyu-apiserver/pkg/tenantctx"
	"muyu-apiserver/rpc/inventory/internal/svc"
	"muyu-apiserver/rpc/inventory/pb"

	"github.com/zeromicro/go-zero/core/logx"
	"google.golang.org/grpc/codes"
	"google.golang.org/grpc/status"
)

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

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

func (l *GetStockSummaryLogic) GetStockSummary(in *pb.StockSummaryReq) (*pb.StockSummaryResp, error) {
	tenantId := tenantctx.ExtractTenantId(l.ctx)
	summaries, err := l.svcCtx.ProductModel.FindProductSummary(l.ctx, tenantId)
	if err != nil {
		return nil, status.Error(codes.Internal, err.Error())
	}

	var productCount, totalPieces, totalPans int64
	var totalLengthM, totalSalesValue float64
	for _, s := range summaries {
		productCount += s.ColorCount
		totalPieces += s.TotalBoltCount
		totalPans += s.TotalPanCount
		totalLengthM += s.TotalLengthM
	}
	_ = totalSalesValue

	return &pb.StockSummaryResp{
		ProductCount:    productCount,
		TotalPieces:     totalPieces,
		TotalPans:       totalPans,
		TotalLengthM:    fmt.Sprintf("%.2f", totalLengthM),
		TotalSalesValue: "0.00",
	}, nil
}