Albirew/nyaa-pantsu
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nyaa-pantsu/models/torrent.go
2017-11-09 16:05:09 +01:00

526 lignes
17 Kio
Go

package models
import (
"context"
"errors"
"fmt"
"html/template"
"path/filepath"
"reflect"
"strconv"
"strings"
"time"
elastic "gopkg.in/olivere/elastic.v5"
"net/http"
"net/url"
"github.com/NyaaPantsu/nyaa/config"
"github.com/NyaaPantsu/nyaa/utils/cache"
"github.com/NyaaPantsu/nyaa/utils/format"
"github.com/NyaaPantsu/nyaa/utils/log"
"github.com/NyaaPantsu/nyaa/utils/sanitize"
"github.com/bradfitz/slice"
"github.com/fatih/structs"
)
const (
// TorrentStatusNormal Int for Torrent status normal
TorrentStatusNormal = 1
// TorrentStatusRemake Int for Torrent status remake
TorrentStatusRemake = 2
// TorrentStatusTrusted Int for Torrent status trusted
TorrentStatusTrusted = 3
// TorrentStatusAPlus Int for Torrent status a+
TorrentStatusAPlus = 4
// TorrentStatusBlocked Int for Torrent status locked
TorrentStatusBlocked = 5
)
// Torrent model
type Torrent struct {
ID uint `gorm:"column:torrent_id;primary_key"`
Name string `gorm:"column:torrent_name"`
Hash string `gorm:"column:torrent_hash;unique"`
Category int `gorm:"column:category"`
SubCategory int `gorm:"column:sub_category"`
Status int `gorm:"column:status"`
Hidden bool `gorm:"column:hidden"`
Date time.Time `gorm:"column:date"`
UploaderID uint `gorm:"column:uploader"`
Stardom int `gorm:"column:stardom"`
Filesize int64 `gorm:"column:filesize"`
Description string `gorm:"column:description"`
WebsiteLink string `gorm:"column:website_link"`
Trackers string `gorm:"column:trackers"`
// Torrent Details
AnidbID uint `gorm:"column:anidbid"`
VndbID uint `gorm:"column:vndbid"`
VgmdbID uint `gorm:"column:vgmdbid"`
Dlsite string `gorm:"column:dlsite"`
VideoQuality string `gorm:"column:videoquality"`
AcceptedTags string `gorm:"column:tags"`
// Indicates the language of the torrent's content (eg. subs, dubs, raws, manga TLs)
Language string `gorm:"column:language"`
DeletedAt *time.Time
Uploader *User `gorm:"AssociationForeignKey:UploaderID;ForeignKey:user_id"`
OldUploader string `gorm:"-"` // ???????
OldComments []OldComment `gorm:"ForeignKey:torrent_id"`
Comments []Comment `gorm:"ForeignKey:torrent_id"`
Tags Tags `gorm:"-"`
Scrape *Scrape `gorm:"AssociationForeignKey:ID;ForeignKey:torrent_id"`
FileList []File `gorm:"ForeignKey:torrent_id"`
Languages []string `gorm:"-"` // This is parsed when retrieved from db
}
/* We need a JSON object instead of a Gorm structure because magnet URLs are
not in the database and have to be generated dynamically */
// TorrentJSON for torrent model in json for api
type TorrentJSON struct {
ID uint `json:"id"`
Name string `json:"name"`
Status int `json:"status"`
Hidden bool `json:"-"`
Hash string `json:"hash"`
Date string `json:"date"`
FullDate time.Time `json:"-"` //Used to convert the date to full OR short format depending on the situation
Filesize int64 `json:"filesize"`
Description template.HTML `json:"description"`
Comments []CommentJSON `json:"comments"`
SubCategory string `json:"sub_category"`
Category string `json:"category"`
// Torrent DBID
AnidbID uint `json:"anidbid"`
VndbID uint `json:"vndbid"`
VgmdbID uint `json:"vgmdbid"`
Dlsite string `json:"dlsite"`
VideoQuality string `json:"videoquality"`
AcceptedTags Tags `json:"tags"`
UploaderID uint `json:"uploader_id"`
UploaderName template.HTML `json:"uploader_name"`
OldUploader template.HTML `json:"uploader_old"`
WebsiteLink template.URL `json:"website_link"`
Languages []string `json:"languages"`
Magnet template.URL `json:"magnet"`
TorrentLink template.URL `json:"torrent"`
Seeders uint32 `json:"seeders"`
Leechers uint32 `json:"leechers"`
Completed uint32 `json:"completed"`
LastScrape time.Time `json:"last_scrape"`
StatsObsolete []bool `json:"-"` //First cell determines whether the stats are valid, second determines whether the stats need a refresh regardless of first cell (too old stats?)
FileList []FileJSON `json:"file_list"`
Tags Tags `json:"-"` // not needed in json to reduce db calls
}
// Size : Returns the total size of memory recursively allocated for this struct
// FIXME: Is it deprecated?
func (t Torrent) Size() (s int) {
s = int(reflect.TypeOf(t).Size())
return
}
// TableName : Return the table name of torrents table
func (t Torrent) TableName() string {
return config.Get().Models.TorrentsTableName
}
// Identifier : Return the identifier of a torrent
func (t *Torrent) Identifier() string {
return fmt.Sprintf("torrent_%d", t.ID)
}
// IsNormal : Return if a torrent status is normal
func (t *Torrent) IsNormal() bool {
return t.Status == TorrentStatusNormal
}
// IsRemake : Return if a torrent status is remake
func (t *Torrent) IsRemake() bool {
return t.Status == TorrentStatusRemake
}
// IsTrusted : Return if a torrent status is trusted
func (t *Torrent) IsTrusted() bool {
return t.Status == TorrentStatusTrusted
}
// IsAPlus : Return if a torrent status is a+
func (t *Torrent) IsAPlus() bool {
return t.Status == TorrentStatusAPlus
}
// IsBlocked : Return if a torrent status is locked
func (t *Torrent) IsBlocked() bool {
return t.Status == TorrentStatusBlocked
}
// IsDeleted : Return if a torrent status is deleted
func (t *Torrent) IsDeleted() bool {
return t.DeletedAt != nil
}
// GetDescriptiveTags : Return the descriptive tags
func (t *Torrent) GetDescriptiveTags() string {
return t.AcceptedTags
}
// AddToESIndex : Adds a torrent to Elastic Search
func (t Torrent) AddToESIndex(client *elastic.Client) error {
ctx := context.Background()
torrentJSON := t.ToJSON()
_, err := client.Index().
Index(config.Get().Search.ElasticsearchIndex).
Type(config.Get().Search.ElasticsearchType).
Id(strconv.FormatUint(uint64(torrentJSON.ID), 10)).
BodyJson(torrentJSON).
Refresh("true").
Do(ctx)
return err
}
// DeleteFromESIndex : Removes a torrent from Elastic Search
func (t *Torrent) DeleteFromESIndex(client *elastic.Client) error {
ctx := context.Background()
_, err := client.Delete().
Index(config.Get().Search.ElasticsearchIndex).
Type(config.Get().Search.ElasticsearchType).
Id(strconv.FormatInt(int64(t.ID), 10)).
Do(ctx)
return err
}
// ParseTrackers : Takes an array of trackers, adds needed trackers and parse it to url string
func (t *Torrent) ParseTrackers(trackers []string) {
v := url.Values{}
if len(config.Get().Torrents.Trackers.NeededTrackers) > 0 { // if we have some needed trackers configured
if len(trackers) == 0 {
trackers = config.Get().Torrents.Trackers.Default
} else {
for _, id := range config.Get().Torrents.Trackers.NeededTrackers {
found := false
for _, tracker := range trackers {
if tracker == config.Get().Torrents.Trackers.Default[id] {
found = true
break
}
}
if !found {
trackers = append(trackers, config.Get().Torrents.Trackers.Default[id])
}
}
}
}
tempTrackers := []string{}
for _, line := range trackers {
if !contains(tempTrackers, line) {
tempTrackers = append(tempTrackers, line)
}
}
trackers = tempTrackers
v["tr"] = trackers
t.Trackers = v.Encode()
}
func (t *Torrent) ParseLanguages() {
t.Languages = strings.Split(t.Language, ",")
}
func (t *Torrent) EncodeLanguages() {
t.Language = strings.Join(t.Languages, ",")
}
// GetTrackersArray : Convert trackers string to Array
func (t *Torrent) GetTrackersArray() (trackers []string) {
v, _ := url.ParseQuery(t.Trackers)
trackers = v["tr"]
return
}
// ToTorrent :
// TODO: Need to get rid of TorrentJSON altogether and have only one true Torrent
// model
func (t *TorrentJSON) ToTorrent() Torrent {
category, err := strconv.ParseInt(t.Category, 10, 64)
if err != nil {
category = 0
}
subCategory, err := strconv.ParseInt(t.SubCategory, 10, 64)
if err != nil {
subCategory = 0
}
// Need to add +00:00 at the end because ES doesn't store it by default
dateFixed := t.Date
if len(dateFixed) > 6 && dateFixed[len(dateFixed)-6] != '+' {
dateFixed += "Z"
}
date, err := time.Parse(time.RFC3339, dateFixed)
if err != nil {
log.Errorf("Problem parsing date '%s' from ES: %s", dateFixed, err)
}
torrent := Torrent{
ID: t.ID,
Name: t.Name,
Hash: t.Hash,
Category: int(category),
SubCategory: int(subCategory),
Status: t.Status,
Date: date,
UploaderID: t.UploaderID,
AnidbID: t.AnidbID,
VndbID: t.VndbID,
VgmdbID: t.VgmdbID,
Dlsite: t.Dlsite,
//Stardom: t.Stardom,
Filesize: t.Filesize,
Description: string(t.Description),
Hidden: t.Hidden,
//WebsiteLink: t.WebsiteLink,
//Trackers: t.Trackers,
//DeletedAt: t.DeletedAt,
// Uploader: TODO
//OldUploader: t.OldUploader,
//OldComments: TODO
// Comments: TODO
// LastScrape not stored in ES, counts won't show without a value however
Scrape: &Scrape{Seeders: t.Seeders, Leechers: t.Leechers, Completed: t.Completed, LastScrape: time.Now()},
Languages: t.Languages,
//FileList: TODO
}
torrent.EncodeLanguages()
return torrent
}
// ToJSON converts a models.Torrent to its equivalent JSON structure
func (t *Torrent) ToJSON() TorrentJSON {
var trackers []string
if t.Trackers == "" {
trackers = config.Get().Torrents.Trackers.Default
} else {
trackers = t.GetTrackersArray()
}
magnet := format.InfoHashToMagnet(strings.TrimSpace(t.Hash), t.Name, trackers...)
commentsJSON := make([]CommentJSON, 0, len(t.OldComments)+len(t.Comments))
for _, c := range t.OldComments {
commentsJSON = append(commentsJSON, CommentJSON{Username: c.Username, UserID: -1, UserStatus: "", Content: template.HTML(c.Content), Date: c.Date.UTC()})
}
for _, c := range t.Comments {
if c.User != nil {
commentsJSON = append(commentsJSON, CommentJSON{Username: c.User.Username, UserID: int(c.User.ID), UserStatus: c.User.GetRole(), Content: sanitize.MarkdownToHTML(c.Content), Date: c.CreatedAt.UTC(), UserAvatar: c.User.MD5})
} else {
commentsJSON = append(commentsJSON, CommentJSON{})
}
}
// Sort comments by date
slice.Sort(commentsJSON, func(i, j int) bool {
return commentsJSON[i].Date.Before(commentsJSON[j].Date)
})
fileListJSON := make([]FileJSON, 0, len(t.FileList))
for _, f := range t.FileList {
fileListJSON = append(fileListJSON, FileJSON{
Path: filepath.Join(f.Path()...),
Filesize: f.Filesize,
})
}
// Sort file list by lowercase filename
slice.Sort(fileListJSON, func(i, j int) bool {
return strings.ToLower(fileListJSON[i].Path) < strings.ToLower(fileListJSON[j].Path)
})
uploader := "れんちょん" // by default
var uploaderID uint
if t.UploaderID > 0 && t.Uploader != nil {
uploader = t.Uploader.Username
uploaderID = t.UploaderID
} else if t.OldUploader != "" {
uploader = t.OldUploader
}
torrentlink := ""
if len(config.Get().Torrents.CacheLink) > 0 { // Only use torrent cache if set, don't check id since better to have all .torrent
if config.IsSukebei() {
torrentlink = "" // torrent cache doesn't have sukebei torrents
} else {
torrentlink = fmt.Sprintf(config.Get().Torrents.CacheLink, t.Hash)
}
} else if len(config.Get().Torrents.StorageLink) > 0 { // Only use own .torrent if storage set
torrentlink = fmt.Sprintf(config.Get().Torrents.StorageLink, t.Hash)
}
scrape := Scrape{}
if t.Scrape != nil {
scrape = *t.Scrape
}
statsObsolete := []bool{false, false}
if scrape.LastScrape.IsZero() || (scrape.Seeders == 0 && scrape.Leechers == 0 && scrape.Completed == 0) {
statsObsolete[0] = true
//The displayed stats are obsolete, S/D/L will show "Unknown"
}
if time.Since(scrape.LastScrape).Hours() > config.Get().Scrape.StatScrapingFrequency || (scrape.Seeders == 0 && scrape.Leechers == 0 && scrape.Completed == 0 && time.Since(scrape.LastScrape).Hours() >= config.Get().Scrape.StatScrapingFrequencyUnknown) {
statsObsolete[1] = true
//The stats need to be refreshed, either because they are valid and older than one month (not that reliable) OR if they are unknown but have been scraped 1h (or more) ago
}
t.ParseLanguages()
res := TorrentJSON{
ID: t.ID,
Name: t.Name,
Status: t.Status,
Hidden: t.Hidden,
Hash: t.Hash,
Date: t.Date.UTC().Format(time.RFC3339),
FullDate: t.Date.UTC(),
Filesize: t.Filesize,
Description: sanitize.MarkdownToHTML(t.Description),
Comments: commentsJSON,
SubCategory: strconv.Itoa(t.SubCategory),
Category: strconv.Itoa(t.Category),
UploaderID: uploaderID,
UploaderName: sanitize.SafeText(uploader),
WebsiteLink: sanitize.Safe(t.WebsiteLink),
Languages: t.Languages,
Magnet: template.URL(magnet),
TorrentLink: sanitize.Safe(torrentlink),
Leechers: scrape.Leechers,
Seeders: scrape.Seeders,
Completed: scrape.Completed,
LastScrape: scrape.LastScrape,
StatsObsolete: statsObsolete,
FileList: fileListJSON,
Tags: t.Tags,
AnidbID: t.AnidbID,
VndbID: t.VndbID,
VgmdbID: t.VgmdbID,
Dlsite: t.Dlsite,
VideoQuality: t.VideoQuality,
}
// Split accepted tags
tags := strings.Split(t.AcceptedTags, ",")
for _, tag := range tags {
if tag != "" {
res.AcceptedTags = append(res.AcceptedTags, Tag{Tag: tag, Type: config.Get().Torrents.Tags.Default, Total: config.Get().Torrents.Tags.MaxWeight, Accepted: true})
}
}
return res
}
/* Complete the functions when necessary... */
// TorrentsToJSON : Map Torrents to TorrentsToJSON without reallocations
func TorrentsToJSON(t []Torrent) []TorrentJSON {
json := make([]TorrentJSON, len(t))
for i := range t {
json[i] = t[i].ToJSON()
}
return json
}
// Update : Update a torrent based on model
func (t *Torrent) Update(unscope bool) (int, error) {
db := ORM
if unscope {
db = ORM.Unscoped()
}
t.EncodeLanguages() // Need to transform array into single string
if db.Model(t).UpdateColumn(t.toMap()).Error != nil {
return http.StatusInternalServerError, errors.New("Torrent was not updated")
}
// TODO Don't create a new client for each request
if ElasticSearchClient != nil {
err := t.AddToESIndex(ElasticSearchClient)
if err == nil {
log.Infof("Successfully updated torrent to ES index.")
} else {
log.Errorf("Unable to update torrent to ES index: %s", err)
}
}
// We only flush cache after update
cache.C.Delete(t.Identifier())
return http.StatusOK, nil
}
// UpdateUnscope : Update a torrent based on model
func (t *Torrent) UpdateUnscope() (int, error) {
return t.Update(true)
}
// Delete : delete a torrent based on id
func (t *Torrent) Delete(definitely bool) (*Torrent, int, error) {
if t.ID == 0 {
err := errors.New("ERROR: Tried to delete a torrent with ID 0")
log.CheckErrorWithMessage(err, "ERROR_IMPORTANT: ")
return t, http.StatusBadRequest, err
}
db := ORM
if definitely {
db = ORM.Unscoped()
}
if db.Delete(t).Error != nil {
return t, http.StatusInternalServerError, errors.New("torrent_not_deleted")
}
if ElasticSearchClient != nil {
err := t.DeleteFromESIndex(ElasticSearchClient)
if err == nil {
log.Infof("Successfully deleted torrent to ES index.")
} else {
log.Errorf("Unable to delete torrent to ES index: %s", err)
}
}
// We flush cache only after delete
cache.C.Flush()
return t, http.StatusOK, nil
}
// DefinitelyDelete : deletes definitely a torrent based on id
func (t *Torrent) DefinitelyDelete() (*Torrent, int, error) {
return t.Delete(true)
}
// toMap : convert the model to a map of interface
func (t *Torrent) toMap() map[string]interface{} {
return structs.Map(t)
}
// LoadTags : load all the unique tags with summed up weight from the database in torrent
func (t *Torrent) LoadTags() {
// Only load if necessary
if len(t.Tags) == 0 {
// Should output a query like this: SELECT tag, type, accepted, SUM(weight) as total FROM tags WHERE torrent_id=923000 GROUP BY type, tag ORDER BY type, total DESC
err := ORM.Select("tag, type, SUM(weight) as total").Where("torrent_id = ?", t.ID).Group("type, tag").Order("type ASC, total DESC").Find(&t.Tags).Error
log.CheckErrorWithMessage(err, "LOAD_TAGS_ERROR: Couldn't load tags from DB!")
}
}
// DeleteTags cipes out all the tags from the torrent. Doesn't decrease pantsu on users!
func (t *Torrent) DeleteTags() {
if t.ID > 0 {
// Should output a query like this: DELETE FROM tags WHERE torrent_id=923000
err := ORM.Where("torrent_id = ?", t.ID).Delete(&t.Tags).Error
log.CheckErrorWithMessage(err, "LOAD_TAGS_ERROR: Couldn't delete tags!")
}
}
func contains(s []string, e string) bool {
for _, a := range s {
if a == e {
return true
}
}
return false
}