package sensitivewordmod

import (
	"fmt"
	"time"

	"91porn-server/common/db"
	"91porn-server/common/log"
	"91porn-server/models"

	"go.mongodb.org/mongo-driver/bson"
	"go.mongodb.org/mongo-driver/bson/primitive"
	"go.mongodb.org/mongo-driver/mongo"
	"go.mongodb.org/mongo-driver/mongo/options"
)


var mdb *db.MongoDB

const table = models.SensitiveWord

func coll(t *db.MongoTool) *db.MongoTool {
	if t == nil {
		return mdb.Coll(table)
	}
	return t.Coll(table)
}

func Init() {
	mdb = db.Init(table)
	initIndex()
}

func initIndex() {
	many := []mongo.IndexModel{
		{
			Keys:    bson.D{{Key: "word", Value: 1}},
			Options: options.Index().SetUnique(true),
		},
		{
			Keys: bson.D{{Key: "category", Value: 1}},
		},
		{
			Keys: bson.D{{Key: "status", Value: 1}},
		},
	}
	if _, err := coll(nil).CreateIndex(many); err != nil {
		panic(fmt.Sprintf("%s model set index err ==>[%+v]", table, err))
	}
}

// Add 新增单条
func Add(w *SensitiveWord) error {
	now := time.Now()
	w.CreatedAt = now
	w.UpdatedAt = now
	w.Status = StatusEnabled
	if _, err := coll(nil).InsertOne(w); err != nil {
		log.Error(fmt.Sprintf("[sensitivewordmod] Add fail: %+v", err))
		return err
	}
	return nil
}

// UpsertByWord 按主词 upsert（导入时使用）
func UpsertByWord(w *SensitiveWord) error {
	now := time.Now()
	filter := bson.M{"word": w.Word}
	update := bson.M{
		"$set": bson.M{
			"category":  w.Category,
			"updatedAt": now,
		},
		"$setOnInsert": bson.M{
			"status":    StatusEnabled,
			"createdAt": now,
		},
	}
	if _, err := coll(nil).UpsertOne(filter, update); err != nil {
		log.Error(fmt.Sprintf("[sensitivewordmod] UpsertByWord fail: %+v", err), log.Any("word", w.Word))
		return err
	}
	return nil
}

// Update 更新单条
func Update(id primitive.ObjectID, fields bson.M) error {
	fields["updatedAt"] = time.Now()
	cond := bson.M{"_id": id}
	if _, err := coll(nil).UpdateOne(cond, bson.M{"$set": fields}); err != nil {
		log.Error(fmt.Sprintf("[sensitivewordmod] Update fail: %+v", err))
		return err
	}
	return nil
}

// Delete 批量删除
func Delete(ids []primitive.ObjectID) (int64, error) {
	cond := bson.M{"_id": bson.M{"$in": ids}}
	result, err := coll(nil).DeleteMany(cond)
	if err != nil {
		log.Error(fmt.Sprintf("[sensitivewordmod] Delete fail: %+v", err))
		return 0, err
	}
	return result.DeletedCount, nil
}

// List 分页查询
func List(req *ListReq) ([]*SensitiveWord, int64, error) {
	cond := buildCond(req)
	total, err := coll(nil).Count(cond)
	if err != nil {
		return nil, 0, err
	}

	page := req.Page
	size := req.Size
	if page < 1 {
		page = 1
	}
	if size < 1 {
		size = 20
	}
	skip := (page - 1) * size

	opts := options.FindOptions{}
	opts.SetSort(bson.D{{Key: "createdAt", Value: -1}}).
		SetSkip(skip).
		SetLimit(size)

	var list []*SensitiveWord
	if err = coll(nil).Find(&list, cond, &opts); err != nil {
		log.Error(fmt.Sprintf("[sensitivewordmod] List find fail: %+v", err))
		return nil, total, err
	}
	return list, total, nil
}

// FindAll 查询全部（导出时使用）
func FindAll(req *ListReq) ([]*SensitiveWord, error) {
	cond := buildCond(req)
	opts := options.FindOptions{}
	opts.SetSort(bson.D{{Key: "category", Value: 1}, {Key: "createdAt", Value: 1}})

	var list []*SensitiveWord
	if err := coll(nil).Find(&list, cond, &opts); err != nil {
		log.Error(fmt.Sprintf("[sensitivewordmod] FindAll fail: %+v", err))
		return nil, err
	}
	return list, nil
}

func buildCond(req *ListReq) bson.M {
	cond := bson.M{}
	if req.Category != "" {
		cond["category"] = req.Category
	}
	if req.Status != nil {
		cond["status"] = *req.Status
	}
	if req.Keyword != "" {
		cond["word"] = bson.M{"$regex": req.Keyword, "$options": "i"}
	}
	return cond
}