// 盘点任务DAO层
// 职责：盘点任务CRUD、检查未完成任务、更新状态/统计
// 紧密耦合：service.InventoryCount、dao.InventoryCountDetail(级联删除)
// 注意：HasUncompletedTask使用NoCache()跳过缓存，同一时间只允许一个盘点任务
package dao

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

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

var InventoryCount = new(inventoryCount)

type inventoryCount struct{}

// convertToObjectIDs 将字符串ID列表批量转换为ObjectID列表，跳过空值
func convertToObjectIDs(hexIDs []string, label string) ([]*bson.ObjectID, error) {
	if len(hexIDs) == 0 {
		return nil, nil
	}
	result := make([]*bson.ObjectID, 0, len(hexIDs))
	for _, hex := range hexIDs {
		if g.IsEmpty(hex) {
			continue
		}
		id, err := bson.ObjectIDFromHex(hex)
		if err != nil {
			return nil, fmt.Errorf("%sID格式错误(值:%s): %v", label, hex, err)
		}
		result = append(result, &id)
	}
	return result, nil
}

func (d *inventoryCount) Insert(ctx context.Context, req *dto.CreateInventoryCountReq, countNo string) (ids []interface{}, err error) {
	result := &entity.InventoryCount{
		CountNo:      countNo,
		Title:        req.Title,
		Description:  req.Description,
		CountType:    req.CountType,
		Scope:        req.Scope,
		AssigneeID:   req.AssigneeID,
		AssigneeName: req.AssigneeName,
		Participants: req.Participants,
		Remark:       req.Remark,
		Status:       stock.InventoryCountStatusInProgress,
	}
	// 批量转换字符串ID为ObjectID
	if result.WarehouseIDs, err = convertToObjectIDs(req.WarehouseIDs, "仓库"); err != nil {
		return
	}
	if result.ZoneIDs, err = convertToObjectIDs(req.ZoneIDs, "库区"); err != nil {
		return
	}
	if result.LocationIDs, err = convertToObjectIDs(req.LocationIDs, "库位"); err != nil {
		return
	}
	if result.AssetSkuIDs, err = convertToObjectIDs(req.AssetSkuIDs, "资产SKU"); err != nil {
		return
	}
	ids, err = mongo.DB().Insert(ctx, []interface{}{result}, public.InventoryCountCollection)
	return
}

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

func (d *inventoryCount) Update(ctx context.Context, req *dto.UpdateInventoryCountReq) (err error) {
	var updateData entity.InventoryCount
	if err = utils.Struct(req, &updateData); err != nil {
		return
	}
	filter := bson.M{"_id": req.Id}
	update := bson.M{"$set": updateData}
	_, err = mongo.DB().Update(ctx, filter, update, public.InventoryCountCollection)
	return
}

func (d *inventoryCount) Delete(ctx context.Context, req *dto.DeleteInventoryCountReq) (err error) {
	filter := bson.M{"_id": req.Id}
	_, err = mongo.DB().Delete(ctx, filter, public.InventoryCountCollection)
	return
}

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

func (d *inventoryCount) buildListFilter(ctx context.Context, req *dto.ListInventoryCountReq) (filter bson.M, err error) {
	_ = ctx
	filter = bson.M{}
	// 兼容单值和数组参数（优先使用数组）
	if len(req.WarehouseIDs) > 0 {
		// 将字符串数组转为 ObjectID 数组
		var oids []bson.ObjectID
		for _, id := range req.WarehouseIDs {
			if oid, e := bson.ObjectIDFromHex(id); e == nil {
				oids = append(oids, oid)
			}
		}
		if len(oids) > 0 {
			filter["warehouseIds"] = bson.M{"$in": oids}
		}
	} else if !g.IsEmpty(req.WarehouseID) {
		if wid, e := bson.ObjectIDFromHex(req.WarehouseID); e == nil {
			filter["warehouseIds"] = wid
		}
	}
	if len(req.ZoneIDs) > 0 {
		// 将字符串数组转为 ObjectID 数组
		var oids []bson.ObjectID
		for _, id := range req.ZoneIDs {
			if oid, e := bson.ObjectIDFromHex(id); e == nil {
				oids = append(oids, oid)
			}
		}
		if len(oids) > 0 {
			filter["zoneIds"] = bson.M{"$in": oids}
		}
	} else if !g.IsEmpty(req.ZoneID) {
		if zid, e := bson.ObjectIDFromHex(req.ZoneID); e == nil {
			filter["zoneIds"] = zid
		}
	}
	if !g.IsEmpty(req.CountType) {
		filter["countType"] = req.CountType
	}
	if !g.IsEmpty(req.Status) {
		filter["status"] = req.Status
	}
	if !g.IsEmpty(req.AssigneeID) {
		filter["assigneeId"] = req.AssigneeID
	}
	if !g.IsEmpty(req.Keyword) {
		filter["$or"] = bson.A{
			bson.M{"countNo": bson.M{"$regex": req.Keyword, "$options": "i"}},
			bson.M{"title": bson.M{"$regex": req.Keyword, "$options": "i"}},
		}
	}
	return
}

// HasUncompletedTask 检查是否存在未完成的盘点任务
func (d *inventoryCount) HasUncompletedTask(ctx context.Context) (has bool, err error) {
	filter := bson.M{
		"status": stock.InventoryCountStatusInProgress,
	}
	var result entity.InventoryCount
	err = mongo.DB().NoCache().FindOne(ctx, filter, &result, public.InventoryCountCollection)
	if err != nil {
		return false, err
	}
	return result.Id != nil, nil
}

// UpdateStatus 更新盘点状态
func (d *inventoryCount) UpdateStatus(ctx context.Context, id *bson.ObjectID, status stock.InventoryCountStatus) (err error) {
	filter := bson.M{"_id": id}
	update := bson.M{
		"$set": bson.M{
			"status": status,
		},
	}
	_, err = mongo.DB().Update(ctx, filter, update, public.InventoryCountCollection)
	return
}

// UpdateStats 更新盘点统计信息
func (d *inventoryCount) UpdateStats(ctx context.Context, id *bson.ObjectID, totalItems, completedItems, discrepancyItems int) (err error) {
	filter := bson.M{"_id": id}
	var progress float64
	if totalItems > 0 {
		progress = float64(completedItems) / float64(totalItems) * 100
	}
	update := bson.M{
		"$set": bson.M{
			"totalItems":       totalItems,
			"completedItems":   completedItems,
			"discrepancyItems": discrepancyItems,
			"progress":         progress,
		},
	}
	_, err = mongo.DB().Update(ctx, filter, update, public.InventoryCountCollection)
	return
}