// 仓库DAO层
// 职责：仓库CRUD、状态更新、批量更新库区/库位状态(状态联动)、更新容量
// 紧密耦合：service.Warehouse(状态联动)、service.Capacity(容量汇总)
// 注意：UpdateCapacityByUnitType使用嵌套路径更新map字段
package dao

import (
	"assets/consts/public"
	"assets/consts/stock"
	"assets/model/config"
	dto "assets/model/dto/stock"
	entity "assets/model/entity/stock"
	"context"

	"gitea.redpowerfuture.com/red-future/common/db/mongo"
	"gitea.redpowerfuture.com/red-future/common/utils"
	"github.com/gogf/gf/v2/frame/g"
	"go.mongodb.org/mongo-driver/v2/bson"
)

var Warehouse = new(warehouse)

type warehouse struct{}

func (d *warehouse) Insert(ctx context.Context, req *dto.CreateWarehouseReq) (ids []interface{}, err error) {
	var result *entity.Warehouse
	if err = utils.Struct(req, &result); err != nil {
		return
	}
	// 如果未传入状态，设置默认值为启用
	if result.Status == "" {
		result.Status = stock.WarehouseStatusEnabled
	}
	// 初始化Capacity为空map，避免后续UpdateCapacityByUnitType panic
	if result.Capacity == nil {
		emptyMap := make(map[stock.CapacityUnitType]config.Capacity)
		result.Capacity = &emptyMap
	}
	ids, err = mongo.DB().Insert(ctx, []interface{}{&result}, public.WarehouseCollection)
	return
}

func (d *warehouse) GetOne(ctx context.Context, req *dto.GetWarehouseReq) (res *entity.Warehouse, err error) {
	filter := bson.M{"_id": req.Id}
	err = mongo.DB().FindOne(ctx, filter, &res, public.WarehouseCollection)
	return
}

func (d *warehouse) Update(ctx context.Context, req *dto.UpdateWarehouseReq) (err error) {
	buildFilter, err := mongo.BuildUpdateData(ctx, req)
	if err != nil {
		return
	}
	filter := bson.M{"_id": req.Id}
	update := bson.M{"$set": buildFilter}
	_, err = mongo.DB().Update(ctx, filter, update, public.WarehouseCollection)
	return
}

func (d *warehouse) DeleteFake(ctx context.Context, req *dto.DeleteWarehouseReq) (err error) {
	filter := bson.M{"_id": req.Id}
	_, err = mongo.DB().DeleteSoft(ctx, filter, public.WarehouseCollection)
	return
}

// UpdateStatus 更新仓库状态
func (d *warehouse) UpdateStatus(ctx context.Context, req *dto.UpdateWarehouseStatusReq) (err error) {
	filter := bson.M{"_id": req.Id}
	update := bson.M{"$set": bson.M{"status": req.Status}}
	_, err = mongo.DB().Update(ctx, filter, update, public.WarehouseCollection)
	return
}

func (d *warehouse) List(ctx context.Context, req *dto.ListWarehouseReq) (res []entity.Warehouse, total int64, err error) {
	filter, err := d.buildListFilter(ctx, req)
	if err != nil {
		return
	}
	total, err = mongo.DB().Find(ctx, filter, &res, public.WarehouseCollection, req.Page, req.OrderBy)
	return
}

func (d *warehouse) buildListFilter(ctx context.Context, req *dto.ListWarehouseReq) (filter bson.M, err error) {
	_ = ctx
	filter = bson.M{}
	if !g.IsEmpty(req.Status) {
		filter["status"] = req.Status
	}
	if !g.IsEmpty(req.Keyword) {
		filter["$or"] = bson.A{
			bson.M{"warehouseCode": bson.M{"$regex": req.Keyword, "$options": "i"}},
			bson.M{"warehouseName": bson.M{"$regex": req.Keyword, "$options": "i"}},
		}
	}
	return
}

// CountZonesByWarehouseId 统计仓库下的库区数量（用于删除前检查）
func (d *warehouse) CountZonesByWarehouseId(ctx context.Context, warehouseId string) (count int64, err error) {
	filter := bson.M{"warehouseId": warehouseId}
	count, err = mongo.DB().Count(ctx, filter, public.ZoneCollection)
	return
}

// BatchUpdateZoneStatus 批量更新仓库下所有库区状态（用于状态联动）
// fromStatus 可选：指定时只更新当前状态为 fromStatus 的记录，避免覆盖其他状态
func (d *warehouse) BatchUpdateZoneStatus(ctx context.Context, warehouseId string, status stock.ZoneStatus, fromStatus ...stock.ZoneStatus) (modifiedCount int64, err error) {
	filter := bson.M{"warehouseId": warehouseId}
	if len(fromStatus) > 0 {
		filter["status"] = fromStatus[0]
	}
	update := bson.M{"$set": bson.M{"status": status}}
	modifiedCount, err = mongo.DB().Update(ctx, filter, update, public.ZoneCollection)
	return
}

// UpdateCapacityByUnitType 更新仓库指定容量单位类型的容量
func (d *warehouse) UpdateCapacityByUnitType(ctx context.Context, warehouseId *bson.ObjectID, unitType stock.CapacityUnitType, currentCapacity int, maxCapacity int, capacityUnit string) (err error) {
	filter := bson.M{"_id": warehouseId}
	update := bson.M{
		"$set": bson.M{
			"capacity." + string(unitType) + ".currentCapacity": currentCapacity,
			"capacity." + string(unitType) + ".maxCapacity":     maxCapacity,
			"capacity." + string(unitType) + ".capacityUnit":    capacityUnit,
		},
	}
	_, err = mongo.DB().Update(ctx, filter, update, public.WarehouseCollection)
	return
}

// BatchUpdateLocationStatus 批量更新仓库下所有库位状态（用于状态联动）
// fromStatus 可选：指定时只更新当前状态为 fromStatus 的记录，避免覆盖其他状态
func (d *warehouse) BatchUpdateLocationStatus(ctx context.Context, warehouseId string, status stock.LocationStatus, fromStatus ...stock.LocationStatus) (modifiedCount int64, err error) {
	filter := bson.M{"warehouseId": warehouseId}
	if len(fromStatus) > 0 {
		filter["status"] = fromStatus[0]
	}
	update := bson.M{"$set": bson.M{"status": status}}
	modifiedCount, err = mongo.DB().Update(ctx, filter, update, public.LocationCollection)
	return
}