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package model
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import (
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"encoding/json"
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"github.com/cloudreve/Cloudreve/v3/pkg/aria2/rpc"
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"github.com/cloudreve/Cloudreve/v3/pkg/util"
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"github.com/jinzhu/gorm"
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)
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// Download 离线下载队列模型
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type Download struct {
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gorm.Model
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Status int // 任务状态
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Type int // 任务类型
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Source string `gorm:"type:text"` // 文件下载地址
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TotalSize uint64 // 文件大小
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DownloadedSize uint64 // 文件大小
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GID string `gorm:"size:32,index:gid"` // 任务ID
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Speed int // 下载速度
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Parent string `gorm:"type:text"` // 存储目录
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Attrs string `gorm:"size:4294967295"` // 任务状态属性
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Error string `gorm:"type:text"` // 错误描述
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Dst string `gorm:"type:text"` // 用户文件系统存储父目录路径
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UserID uint // 发起者UID
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TaskID uint // 对应的转存任务ID
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// 关联模型
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User *User `gorm:"PRELOAD:false,association_autoupdate:false"`
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// 数据库忽略字段
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StatusInfo rpc.StatusInfo `gorm:"-"`
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Task *Task `gorm:"-"`
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}
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// AfterFind 找到下载任务后的钩子，处理Status结构
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func (task *Download) AfterFind() (err error) {
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// 解析状态
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if task.Attrs != "" {
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err = json.Unmarshal([]byte(task.Attrs), &task.StatusInfo)
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}
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if task.TaskID != 0 {
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task.Task, _ = GetTasksByID(task.TaskID)
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}
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return err
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}
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// BeforeSave Save下载任务前的钩子
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func (task *Download) BeforeSave() (err error) {
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// 解析状态
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if task.Attrs != "" {
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err = json.Unmarshal([]byte(task.Attrs), &task.StatusInfo)
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}
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return err
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}
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// Create 创建离线下载记录
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func (task *Download) Create() (uint, error) {
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if err := DB.Create(task).Error; err != nil {
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util.Log().Warning("无法插入离线下载记录, %s", err)
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return 0, err
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}
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return task.ID, nil
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}
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// Save 更新
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func (task *Download) Save() error {
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if err := DB.Save(task).Error; err != nil {
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util.Log().Warning("无法更新离线下载记录, %s", err)
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return err
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}
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return nil
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}
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// GetDownloadsByStatus 根据状态检索下载
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func GetDownloadsByStatus(status ...int) []Download {
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var tasks []Download
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DB.Where("status in (?)", status).Find(&tasks)
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return tasks
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}
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// GetDownloadsByStatusAndUser 根据状态检索和用户ID下载
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// page 为 0 表示列出所有，非零时分页
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func GetDownloadsByStatusAndUser(page, uid uint, status ...int) []Download {
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var tasks []Download
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dbChain := DB
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if page > 0 {
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dbChain = dbChain.Limit(10).Offset((page - 1) * 10).Order("updated_at DESC")
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}
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dbChain.Where("user_id = ? and status in (?)", uid, status).Find(&tasks)
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return tasks
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}
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// GetDownloadByGid 根据GID和用户ID查找下载
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func GetDownloadByGid(gid string, uid uint) (*Download, error) {
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download := &Download{}
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result := DB.Where("user_id = ? and g_id = ?", uid, gid).First(download)
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return download, result.Error
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}
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// GetOwner 获取下载任务所属用户
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func (task *Download) GetOwner() *User {
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if task.User == nil {
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if user, err := GetUserByID(task.UserID); err == nil {
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return &user
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}
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}
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return task.User
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}
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// Delete 删除离线下载记录
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func (download *Download) Delete() error {
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return DB.Model(download).Delete(download).Error
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}
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