package controllers

import (
	"fmt"
	"github.com/gin-gonic/gin"
	"github.com/shopspring/decimal"
	"gorm.io/gorm"
	"strconv"
	"time"
	"wms/constvar"
	"wms/extend/code"
	"wms/extend/util"
	"wms/models"
	"wms/request"
)

type LocationProductAmountController struct {
}

// List
// @Tags      库存盘点
// @Summary   库存盘点列表
// @Produce   application/json
// @Param		 object  body  request.PageInfo true  "查询参数"
// @Success   200 {object} util.Response	"成功"
// @Router    /api-wms/v1/locationProductamount/list [post]
func (slf LocationProductAmountController) List(c *gin.Context) {
	var params request.PageInfo
	if err := c.BindJSON(&params); err != nil {
		util.ResponseFormat(c, code.RequestParamError, "参数解析失败，数据类型错误:"+err.Error())
		return
	}
	if params.Check() {
		util.ResponseFormat(c, code.RequestParamError, "参数异常")
		return
	}

	search := models.NewLocationProductAmountSearch()
	search.SetPage(params.Page, params.PageSize)

	search.Orm = search.Orm.Model(&models.LocationProductAmountWithOperation{}).Table("wms_location_product_amount").Select("wms_location_product_amount.*,wms_operation.amount as adjust_amount").InnerJoins("inner join wms_location_product on wms_location_product.id=wms_location_product_amount.location_product_id").InnerJoins("inner join wms_operation_details on wms_operation_details.product_id=wms_location_product.product_id").InnerJoins("inner join wms_operation on wms_operation.id=wms_operation_details.operation_id").Where("wms_operation.base_operation_type=?", constvar.BaseOperationTypeAdjust)

	var (
		records = make([]*models.ResponseDisuseList, 0)
		total   int64
	)

	if err := search.Orm.Count(&total).Error; err != nil {
		util.ResponseFormat(c, code.RequestError, fmt.Errorf("find count err: %v", err))
		return
	}
	search.Orm = search.Orm.Preload("LocationProduct").Preload("LocationProduct.Location").Preload("LocationProduct.Product")
	if params.Page*params.PageSize > 0 {
		search.Orm = search.Orm.Offset((params.Page - 1) * params.PageSize).Limit(params.PageSize)
	}
	if err := search.Orm.Find(&records).Error; err != nil {
		util.ResponseFormat(c, code.RequestError, fmt.Errorf("find count err: %v", err))
		return
	}

	util.ResponseFormatListWithPage(c, code.Success, records, int(total), params.Page, params.PageSize)
}

// Add
// @Tags      库存盘点
// @Summary   添加库存盘点信息
// @Produce   application/json
// @Param     object  body  request.AddLocationProductAmount true  "入库/出库信息"
// @Success   200 {object} util.Response "成功"
// @Router    /api-wms/v1/locationProductamount/add [post]
func (slf LocationProductAmountController) Add(c *gin.Context) {
	var reqParams request.AddLocationProductAmount
	if err := c.BindJSON(&reqParams); err != nil {
		util.ResponseFormat(c, code.RequestParamError, "参数解析失败，数据类型错误")
		return
	}
	if reqParams.LocationId == 0 {
		util.ResponseFormat(c, code.RequestParamError, "参数异常，请选择位置")
		return
	}
	if reqParams.ProductId == "" {
		util.ResponseFormat(c, code.RequestParamError, "参数异常，请选择产品")
		return
	}

	var existCount int64
	if err := models.NewOperationSearch().Orm.Table("wms_operation").InnerJoins("inner join wms_operation_details on wms_operation_details.operation_id=wms_operation.id").Where("wms_operation.from_location_id=? and wms_operation_details.product_id=? and wms_operation.base_operation_type=? and wms_operaton.status=?", reqParams.LocationId, reqParams.ProductId, constvar.BaseOperationTypeAdjust, constvar.OperationStatus_Ready).Count(&existCount).Error; err != nil {
		util.ResponseFormat(c, code.RequestParamError, err.Error())
		return
	}
	if existCount > 0 {
		util.ResponseFormat(c, code.RequestError, "该商品在已选中的位置存在未验证的库存盘点信息，无法继续添加相关信息")
		return
	}

	locProduct, err := models.NewLocationProductSearch().SetLocationId(reqParams.LocationId).SetProductId(reqParams.ProductId).First()
	if err != nil {
		util.ResponseFormat(c, code.RequestParamError, "参数异常，未找到该上架规则")
		return
	}
	if locProduct.Id == 0 {
		util.ResponseFormat(c, code.RequestError, "不存在该上架规则，无法进行库存盘点")
		return
	}
	location, err := models.NewLocationSearch().SetType(int(constvar.LocationTypeAdjust)).First()
	if err != nil {
		util.ResponseFormat(c, code.RequestParamError, err.Error())
		return
	}
	reqParams.AdjustAmount = reqParams.Amount.Sub(reqParams.DifferenceAmount)
	//reqParams.AdjustAmount = reqParams.DifferenceAmount.Sub(reqParams.Amount)
	locAmount := models.LocationProductAmount{
		LocationProductId: locProduct.Id,
		Amount:            decimal.NewFromInt(0),
	}
	detail := &models.OperationDetails{
		ProductId: reqParams.ProductId,
		Amount:    reqParams.AdjustAmount,
	}
	operation := models.Operation{
		Number:            strconv.FormatInt(time.Now().Unix(), 10),
		Status:            constvar.OperationStatus_Ready,
		OperationDate:     time.Now().Format("2006-01-02 15:04:05"),
		Comment:           "库存盘点",
		BaseOperationType: constvar.BaseOperationTypeAdjust,
		Details:           []*models.OperationDetails{detail},
		FromLocationID:    reqParams.LocationId,
		ToLocationID:      location.Id,
	}

	//if reqParams.AdjustAmount.GreaterThanOrEqual(decimal.NewFromInt(0)) {
	//	operation.FromLocationID = Location.Id
	//	operation.ToLocationID = reqParams.LocationId
	//} else {
	//	operation.FromLocationID = reqParams.LocationId
	//	operation.ToLocationID = Location.Id
	//}

	if err := models.WithTransaction(func(tx *gorm.DB) error {
		if err := models.NewOperationSearch().SetOrm(tx).Create(&operation); err != nil {
			return err
		}
		if err := models.NewLocationProductAmountSearch().SetOrm(tx).Create(&locAmount); err != nil {
			return err
		}
		return nil
	}); err != nil {
		util.ResponseFormat(c, code.RequestError, err.Error())
		return
	}

	util.ResponseFormat(c, code.Success, "添加成功")
}