package logic

import (
	"context"
	"strconv"

	"muyu-apiserver/model"
	"muyu-apiserver/pkg/metrics"
	"muyu-apiserver/pkg/tenantctx"
	"muyu-apiserver/pkg/uid"
	"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 SaveBoltsLogic struct {
	ctx    context.Context
	svcCtx *svc.ServiceContext
	logx.Logger
}

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

func (l *SaveBoltsLogic) SaveBolts(in *pb.SaveBoltsReq) (*pb.Empty, error) {
	tenantId := tenantctx.ExtractTenantId(l.ctx)
	pan, err := l.svcCtx.PanModel.FindOneByPanId(l.ctx, in.PanId)
	if err != nil || pan.TenantId != tenantId {
		return nil, status.Error(codes.NotFound, "pan not found")
	}
	product, err := l.svcCtx.ProductModel.FindOneByProductId(l.ctx, pan.ProductId)
	if err != nil || product.TenantId != tenantId {
		return nil, status.Error(codes.NotFound, "product not found")
	}

	var totalLengthM float64
	bolts := make([]*model.InvProductBolt, 0, len(in.Lengths))
	for i, lengthStr := range in.Lengths {
		lengthM, _ := strconv.ParseFloat(lengthStr, 64)
		totalLengthM += lengthM
		bolts = append(bolts, &model.InvProductBolt{
			BoltId:    uid.Generate(),
			PanId:     in.PanId,
			LengthM:   lengthM,
			Color:     product.Color,
			SortOrder: int64(i + 1),
			TenantId:  tenantId,
		})
	}

	if err := l.svcCtx.BoltModel.BulkReplace(l.ctx, in.PanId, tenantId, bolts); err != nil {
		return nil, status.Error(codes.Internal, err.Error())
	}

	metrics.InboundBoltsTotal.WithLabelValues(tenantId, "save_bolts").Add(float64(len(in.Lengths)))
	if totalLengthM > 0 {
		metrics.InboundLengthMetersTotal.WithLabelValues(tenantId, "", "", "save_bolts").Add(totalLengthM)
	}

	return &pb.Empty{}, nil
}