package mongo

import (
	"context"
	"fwh-toolbox-server/database"
	"fwh-toolbox-server/domain"
	"time"

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

const (
	CollectionName_StatisticsShutdown = "StatisticsShutdown"
)

// 从数据库获取Shutdown统计数据
func GetStatisticsShutdown(date string) (*domain.ShutdownStatisticsItem, error) {
	ctx, cancel := context.WithTimeout(context.Background(), 5*time.Second)
	defer cancel()

	collection := database.GetCollection(CollectionName_StatisticsShutdown)

	filter := bson.M{}
	// 条件
	if date != "" {
		filter["date"] = date
	}

	var item domain.ShutdownStatisticsItem
	err := collection.FindOne(ctx, filter).Decode(&item)
	if err != nil {
		return nil, err
	}

	return &item, nil
}

// 从数据库获取最新Shutdown统计数据
func GetLatestStatisticsShutdown() (*domain.ShutdownStatisticsItem, error) {
	ctx, cancel := context.WithTimeout(context.Background(), 5*time.Second)
	defer cancel()

	collection := database.GetCollection(CollectionName_StatisticsShutdown)

	// 按 date 字段倒序排序（最新日期在最前）
	opts := options.FindOne().SetSort(bson.D{{Key: "date", Value: -1}})

	var result domain.ShutdownStatisticsItem
	err := collection.FindOne(ctx, bson.D{}, opts).Decode(&result)
	if err != nil {
		return nil, err
	}
	return &result, nil
}

// 从数据库获取指定时间范围内的Shutdown统计数据
func GetStatisticsShutdownByDateRange(startDate, endDate string) ([]domain.ShutdownStatisticsItem, error) {
	ctx, cancel := context.WithTimeout(context.Background(), 5*time.Second)
	defer cancel()

	collection := database.GetCollection(CollectionName_StatisticsShutdown)

	var results []domain.ShutdownStatisticsItem

	findOptions := options.Find().SetSort(bson.D{{Key: "date", Value: 1}})

	filter := bson.M{
		"date": bson.M{
			"$gte": startDate, // 起始日期 >= startDate
			"$lte": endDate,   // 结束日期 <= endDate
		},
	}

	cursor, err := collection.Find(ctx, filter, findOptions) // 按日期升序
	if err != nil {
		return nil, err
	}
	defer cursor.Close(ctx)

	if err = cursor.All(ctx, &results); err != nil {
		return nil, err
	}

	return results, nil
}

// 插入或更新一条Shutdown统计数据到数据库
func InsertStatisticsShutdown(data domain.ShutdownStatisticsItem) error {
	ctx, cancel := context.WithTimeout(context.Background(), 5*time.Second)
	defer cancel()

	collection := database.GetCollection(CollectionName_StatisticsShutdown)

	// 创建日期字段唯一索引
	collection.Indexes().CreateOne(ctx, mongo.IndexModel{
		Keys:    bson.M{"date": 1},
		Options: options.Index().SetUnique(true),
	})

	filter := bson.M{"date": data.Date}
	update := bson.M{"$set": bson.M{
		"status":  data.Status,
		"count":   data.Count,
		"siteMap": data.SiteMap,
	}}
	opts := options.Update().SetUpsert(true)

	_, err := collection.UpdateOne(ctx, filter, update, opts)
	if err != nil {
		return err
	}

	return nil
}