Albirew/nyaa-pantsu
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nyaa-pantsu/models/torrents/find.go
2017-08-27 21:20:53 +10:00

235 lignes
7,6 Kio
Go

package torrents
import (
"errors"
"net/http"
"strconv"
"strings"
elastic "gopkg.in/olivere/elastic.v5"
"time"
"github.com/NyaaPantsu/nyaa/config"
"github.com/NyaaPantsu/nyaa/models"
"github.com/NyaaPantsu/nyaa/utils/cache"
)
// Query : Interface to pass for torrents query
type Query interface {
String() string
ToDBQuery() (string, []interface{})
ToESQuery(client *elastic.Client) (*elastic.SearchService, error)
Append(string, ...interface{})
Prepend(string, ...interface{})
}
/* Function to interact with Models
*
* Get the torrents with where clause
*
*/
// FindByID : get a torrent with its id
func FindByID(id uint) (*models.Torrent, error) {
torrent := &models.Torrent{ID: id}
var err error
if found, ok := cache.C.Get(torrent.Identifier()); ok {
return found.(*models.Torrent), nil
}
tmp := models.ORM.Where("torrent_id = ?", id).Preload("Scrape").Preload("Uploader").Preload("Comments")
if id > config.Get().Models.LastOldTorrentID {
tmp = tmp.Preload("FileList")
}
if id <= config.Get().Models.LastOldTorrentID && !config.IsSukebei() {
// only preload old comments if they could actually exist
tmp = tmp.Preload("OldComments")
}
err = tmp.Error
if err != nil {
return torrent, err
}
if tmp.Find(torrent).RecordNotFound() {
err = errors.New("Article is not found")
return torrent, err
}
torrent.ParseLanguages()
// GORM relly likes not doing its job correctly
// (or maybe I'm just retarded)
torrent.OldUploader = ""
if torrent.ID <= config.Get().Models.LastOldTorrentID && torrent.UploaderID == 0 {
var tmp models.UserUploadsOld
if !models.ORM.Where("torrent_id = ?", torrent.ID).Find(&tmp).RecordNotFound() {
torrent.OldUploader = tmp.Username
}
}
for i := range torrent.Comments {
torrent.Comments[i].User = new(models.User)
models.ORM.Where("user_id = ?", torrent.Comments[i].UserID).Find(torrent.Comments[i].User)
}
cache.C.Set(torrent.Identifier(), torrent, 5*time.Minute)
return torrent, nil
}
// FindRawByID : Get torrent with id without user or comments
// won't fetch user or comments
func FindRawByID(id uint) (torrent models.Torrent, err error) {
err = nil
if models.ORM.Where("torrent_id = ?", id).Find(&torrent).RecordNotFound() {
err = errors.New("Torrent is not found")
}
torrent.ParseLanguages()
return
}
// FindUnscopeByID : Get torrent with ID deleted or not
func FindUnscopeByID(id uint) (torrent models.Torrent, err error) {
err = nil
if models.ORM.Unscoped().Where("torrent_id = ?", id).Preload("Uploader").Find(&torrent).RecordNotFound() {
err = errors.New("Torrent is not found")
}
torrent.ParseLanguages()
return
}
// FindRawByHash : Get torrent with id without user or comments
// won't fetch user or comments
func FindRawByHash(hash string) (torrent models.Torrent, err error) {
err = nil
if models.ORM.Where("torrent_hash = ?", hash).Find(&torrent).RecordNotFound() {
err = errors.New("Torrent is not found")
}
torrent.ParseLanguages()
return
}
// FindOrderByNoCount : Get torrents based on search without counting and user
func FindOrderByNoCount(parameters Query, orderBy string, limit int, offset int) (torrents []models.Torrent, err error) {
torrents, _, err = findOrderBy(parameters, orderBy, limit, offset, false, false, false)
return
}
// FindOrderBy : Get torrents based on search without user
func FindOrderBy(parameters Query, orderBy string, limit int, offset int) (torrents []models.Torrent, count int, err error) {
torrents, count, err = findOrderBy(parameters, orderBy, limit, offset, true, false, false)
return
}
// FindWithUserOrderBy : Get torrents based on search with user
func FindWithUserOrderBy(parameters Query, orderBy string, limit int, offset int) (torrents []models.Torrent, count int, err error) {
torrents, count, err = findOrderBy(parameters, orderBy, limit, offset, true, true, false)
return
}
func findOrderBy(parameters Query, orderBy string, limit int, offset int, countAll bool, withUser bool, deleted bool) (
torrents []models.Torrent, count int, err error,
) {
var conditionArray []string
var params []interface{}
if parameters != nil { // if there is where parameters
condition, wheres := parameters.ToDBQuery()
if len(condition) > 0 {
conditionArray = append(conditionArray, condition)
params = wheres
}
}
if !deleted {
conditionArray = append(conditionArray, "deleted_at IS NULL")
} else {
conditionArray = append(conditionArray, "deleted_at IS NOT NULL")
}
conditions := strings.Join(conditionArray, " AND ")
if countAll {
err = models.ORM.Unscoped().Model(&torrents).Where(conditions, params...).Count(&count).Error
if err != nil {
return
}
}
// build custom db query for performance reasons
dbQuery := models.ORM.Unscoped().Joins("LEFT JOIN " + config.Get().Models.ScrapeTableName + " ON " + config.Get().Models.TorrentsTableName + ".torrent_id = " + config.Get().Models.ScrapeTableName + ".torrent_id").Preload("Scrape").Preload("FileList")
if withUser {
dbQuery = dbQuery.Preload("Uploader")
}
if countAll {
dbQuery = dbQuery.Preload("Comments")
}
if conditions != "" {
dbQuery = dbQuery.Where(conditions, params...)
}
if orderBy == "" { // default OrderBy
orderBy = "date DESC"
}
dbQuery = dbQuery.Order(orderBy)
if limit != 0 || offset != 0 { // if limits provided
dbQuery = dbQuery.Limit(strconv.Itoa(limit)).Offset(strconv.Itoa(offset))
}
err = dbQuery.Find(&torrents).Error
return
}
// Find obtain a list of torrents matching 'parameters' from the
// database. The list will be of length 'limit' and in default order.
// GetTorrents returns the first records found. Later records may be retrieved
// by providing a positive 'offset'
func Find(parameters Query, limit int, offset int) ([]models.Torrent, int, error) {
return FindOrderBy(parameters, "", limit, offset)
}
// FindDB : Get Torrents with where parameters but no limit and order by default (get all the torrents corresponding in the db)
func FindDB(parameters Query) ([]models.Torrent, int, error) {
return FindOrderBy(parameters, "", 0, 0)
}
// FindAllOrderBy : Get all torrents ordered by parameters
func FindAllOrderBy(orderBy string, limit int, offset int) ([]models.Torrent, int, error) {
return FindOrderBy(nil, orderBy, limit, offset)
}
// FindAll : Get all torrents without order
func FindAll(limit int, offset int) ([]models.Torrent, int, error) {
return FindOrderBy(nil, "", limit, offset)
}
// GetAllInDB : Get all torrents
func GetAllInDB() ([]models.Torrent, int, error) {
return FindOrderBy(nil, "", 0, 0)
}
// ToggleBlock ; Lock/Unlock a torrent based on id
func ToggleBlock(id uint) (models.Torrent, int, error) {
var torrent models.Torrent
if models.ORM.Unscoped().Model(&torrent).First(&torrent, id).RecordNotFound() {
return torrent, http.StatusNotFound, errors.New("Torrent is not found")
}
torrent.ParseLanguages()
if torrent.Status == models.TorrentStatusBlocked {
torrent.Status = models.TorrentStatusNormal
} else {
torrent.Status = models.TorrentStatusBlocked
}
if models.ORM.Unscoped().Model(&torrent).UpdateColumn(&torrent).Error != nil {
return torrent, http.StatusInternalServerError, errors.New("Torrent was not updated")
}
return torrent, http.StatusOK, nil
}
// FindDeleted : Gets deleted torrents based on search params
func FindDeleted(parameters Query, orderBy string, limit int, offset int) (torrents []models.Torrent, count int, err error) {
torrents, count, err = findOrderBy(parameters, orderBy, limit, offset, true, true, true)
return
}
// GetIDs : returns an array of id
func GetIDs(parameters Query) ([]uint, error) {
var ids []uint
err := models.ORM.Select("torrent_id").Where(parameters.ToDBQuery()).Find(&ids).Error
return ids, err
}