package services

import (
	"bufio"
	"fmt"
	"fwh-toolbox-server/domain"
	"fwh-toolbox-server/dto"
	"fwh-toolbox-server/jobs"
	"fwh-toolbox-server/repositories"
	"fwh-toolbox-server/utils/minio"
	"io"
	"path"
	"strings"
	"time"
)

type AutoUpdateConfigFileInfoPage = dto.ResPage[dto.AutoUpdateConfigFileInfo]

var (
	configFileKeyPrefix = "configFile/"
)

func GetAutoUpdateConfigOption() (*domain.AutoUpdateConfigOption, error) {
	return repositories.GetAutoUpdateConfigOption()
}

func GetAutoUpdatePackageInfo(fileName string) (*domain.AutoUpdatePackages, error) {
	return repositories.GetAutoUpdatePackages(fileName)
}

func CreateAutoUpdatePackageInfo(packageType string, info domain.AutoUpdatePackages) error {
	return repositories.CreateAutoUpdatePackage(packageType, info)
}

func UpdateAutoUpdatePackageInfo(fileName string, info domain.AutoUpdatePackages) error {
	return repositories.UpdateAutoUpdatePackage(fileName, info)
}

func DeleteAutoUpdatePackageInfo(packageType string, fileName string) error {
	return repositories.DeleteAutoUpdatePackage(fileName, fileName)
}

func GetAutoUpdateAPowerVersion() (*[]domain.AutoUpdateAPowerVersion, error) {
	return repositories.GetAutoUpdateAPowerVersion()
}

func UpdateAutoUpdateAPowerVersion(version string, info domain.AutoUpdateAPowerVersion) error {
	return repositories.UpdateAutoUpdateAPowerVersion(version, info)
}

func DeleteAutoUpdateAPowerVersion(version string) error {
	return repositories.DeleteAutoUpdateAPowerVersion(version)
}

func GetAutoUpdateConfig(aGateVersion string) (*domain.AutoUpdateConfig, error) {
	return repositories.GetAutoUpdateConfig(aGateVersion)
}

func UpdateAutoUpdateConfig(aGateVersion string, config domain.AutoUpdateConfig) error {
	return repositories.UpdateAutoUpdateConfig(aGateVersion, config)
}

func DeleteAutoUpdateConfig(aGateVersion string) error {
	return repositories.DeleteAutoUpdateConfig(aGateVersion)
}

func CreateAutoUpdateSpecialConfig(aGateVersion string, config domain.AutoUpdateSpecialTypeConfig) error {
	return repositories.CreateAutoUpdateSpecialConfig(aGateVersion, config)
}

func DeleteAutoUpdateSpecialConfig(aGateVersion string, id string) error {
	return repositories.DeleteAutoUpdateSpecialConfig(aGateVersion, id)
}

func refreshAutoUpdateConfigFileInfo() error {
	// 从Minio查询数据
	objectList, err := minio.ListFilesObjectFromBucket("fwh-toolbox-auto-update", configFileKeyPrefix, false)
	if err != nil {
		return err
	}

	// 数据写入缓存
	if err := repositories.RefreshAutoUpdateConfigFileInfo(objectList); err != nil {
		return err
	}

	return nil
}

// Excel文件生成管理相关服务
func GetAutoUpdateConfigFileInfo(page uint, size uint) (*AutoUpdateConfigFileInfoPage, error) {
	var fileInfoList []minio.MinioFileObject

	// 先查缓存
	total, err := repositories.GetAutoUpdateConfigFileInfoTotal()
	if err != nil {
		return nil, err
	} else if total > 0 {
		if fileInfoList, err = repositories.GetAutoUpdateConfigFileInfoByPage(page, size); err != nil {
			return nil, err
		}
	} else {
		// 缓存无数据则刷新缓存
		if err := refreshAutoUpdateConfigFileInfo(); err != nil {
			return nil, err
		}

		// 从新查缓存
		total, err = repositories.GetAutoUpdateConfigFileInfoTotal()
		if err != nil {
			return nil, err
		} else if total > 0 {
			if fileInfoList, err = repositories.GetAutoUpdateConfigFileInfoByPage(page, size); err != nil {
				return nil, err
			}
		}
	}

	// 提取数据信息
	result := make([]dto.AutoUpdateConfigFileInfo, 0, len(fileInfoList))
	for _, obj := range fileInfoList {
		fileName := path.Base(obj.Key)
		result = append(result, dto.AutoUpdateConfigFileInfo{
			FileName:     fileName,
			Key:          obj.Key,
			LastModified: obj.LastModified.Format(time.DateTime),
		})
	}

	if total < 0 {
		total = 0
	}

	infoPage := AutoUpdateConfigFileInfoPage{
		Data:     result,
		PageSize: size,
		PageNum:  page,
		Total:    uint(total),
	}

	return &infoPage, nil
}

func CreateAutoUpdateConfigFile() error {
	now := time.Now()
	date := strings.ReplaceAll(now.Format(time.DateOnly), "-", "")
	nano := now.UnixNano() % 1e6 // 取后6位，够用
	filePath := fmt.Sprintf("【生产环境】自动升级配置表_%s_%06d.xlsx", date, nano)
	key := configFileKeyPrefix + filePath
	if err := jobs.CreateAutoUpdateConfigFile(filePath, "fwh-toolbox-auto-update", key); err != nil {
		return err
	}

	// 创建文件后，刷新缓存
	refreshAutoUpdateConfigFileInfo()

	return nil
}

func DownloadAutoUpdateConfigFile(fileName string, writer *bufio.Writer) error {
	obj, err := minio.GetObjectFromBucket("fwh-toolbox-auto-update", configFileKeyPrefix+fileName)
	if err != nil {
		return err
	}
	defer obj.Close()

	// Fiber 负责读取 pr 并发送给客户端（消费者）
	_, err = io.Copy(writer, obj) // 等 pipe EOF 自动结束
	if err != nil {
		return err
	}

	return nil
}