package model

import (
	"context"
	"time"

	"github.com/zeromicro/go-zero/core/stores/mon"
	"go.mongodb.org/mongo-driver/bson"
	"go.mongodb.org/mongo-driver/mongo/options"
)

var _ AutoIdModel = (*customAutoIdModel)(nil)

type (
	// AutoIdModel is an interface to be customized, add more methods here,
	// and implement the added methods in customAutoIdModel.
	AutoIdModel interface {
		autoIdModel
		Inc(ctx context.Context, data *AutoId) error
	}

	customAutoIdModel struct {
		*defaultAutoIdModel
	}
)

// NewAutoIdModel returns a model for the mongo.
func NewAutoIdModel(url, db, collection string) AutoIdModel {
	conn := mon.MustNewModel(url, db, collection)
	return &customAutoIdModel{
		defaultAutoIdModel: newDefaultAutoIdModel(conn),
	}
}

func (m *customAutoIdModel) Inc(ctx context.Context, data *AutoId) error {
	// 定義查詢的條件
	filter := bson.M{"name": "auto_id"}

	// 定義更新的操作，包括自增和更新時間
	update := bson.M{
		"$inc": bson.M{"counter": 1},                 // 自增 counter
		"$set": bson.M{"updateAt": time.Now().UTC()}, // 設置 updateAt 為當前時間
	}
	// 使用 FindOneAndUpdate 並將結果解碼到 data 中
	err := m.conn.FindOneAndUpdate(ctx, &data, filter, update,
		options.FindOneAndUpdate().SetUpsert(true),
		options.FindOneAndUpdate().SetReturnDocument(options.After))

	return err
}