284 lines
6.6 KiB
Go
284 lines
6.6 KiB
Go
package main
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import (
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"crypto/md5"
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"labix.org/v2/mgo"
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"labix.org/v2/mgo/bson"
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"time"
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)
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type Book struct {
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Id string `bson:"_id"`
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Title string
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Author []string
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Contributor string
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Publisher string
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Description string
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Subject []string
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Date string
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Lang []string
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Isbn string
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Type string
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Format string
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Source string
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Relation string
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Coverage string
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Rights string
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Meta string
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File bson.ObjectId
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FileSize int
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Cover bson.ObjectId
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CoverSmall bson.ObjectId
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Active bool
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Keywords []string
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}
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type News struct {
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Date time.Time
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Text string
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}
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type DB struct {
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session *mgo.Session
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}
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func initDB() *DB {
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var err error
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d := new(DB)
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d.session, err = mgo.Dial(DB_IP)
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if err != nil {
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panic(err)
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}
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return d
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}
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func (d *DB) Close() {
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d.session.Close()
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}
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func (d *DB) Copy() *DB {
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dbCopy := new(DB)
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dbCopy.session = d.session.Copy()
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return dbCopy
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}
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func md5Pass(pass string) []byte {
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h := md5.New()
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hash := h.Sum(([]byte)(PASS_SALT + pass))
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return hash
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}
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func (d *DB) SetPassword(user string, pass string) error {
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hash := md5Pass(pass)
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userColl := d.session.DB(DB_NAME).C(USERS_COLL)
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return userColl.Update(bson.M{"user": user}, bson.M{"$set": bson.M{"pass": hash}})
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}
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func (d *DB) UserValid(user string, pass string) bool {
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hash := md5Pass(pass)
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userColl := d.session.DB(DB_NAME).C(USERS_COLL)
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n, err := userColl.Find(bson.M{"user": user, "pass": hash}).Count()
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if err != nil {
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return false
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}
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return n != 0
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}
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func (d *DB) AddUser(user string, pass string) error {
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hash := md5Pass(pass)
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userColl := d.session.DB(DB_NAME).C(USERS_COLL)
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return userColl.Insert(bson.M{"user": user, "pass": hash, "role": ""})
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}
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func (d *DB) UserRole(user string) string {
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type result struct {
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Role string
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}
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res := result{}
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userColl := d.session.DB(DB_NAME).C(USERS_COLL)
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err := userColl.Find(bson.M{"user": user}).One(&res)
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if err != nil {
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return ""
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}
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return res.Role
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}
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func (d *DB) AddNews(text string) error {
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var news News
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news.Text = text
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news.Date = time.Now()
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newsColl := d.session.DB(DB_NAME).C(NEWS_COLL)
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return newsColl.Insert(news)
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}
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func (d *DB) GetNews(num int, days int) (news []News, err error) {
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query := bson.M{}
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if days != 0 {
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duration := time.Duration(-24*days) * time.Hour
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date := time.Now().Add(duration)
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query = bson.M{"date": bson.M{"$gt": date}}
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}
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newsColl := d.session.DB(DB_NAME).C(NEWS_COLL)
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q := newsColl.Find(query).Sort("-date").Limit(num)
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err = q.All(&news)
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return
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}
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func (d *DB) InsertStats(stats interface{}) error {
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statsColl := d.session.DB(DB_NAME).C(STATS_COLL)
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return statsColl.Insert(stats)
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}
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func (d *DB) InsertBook(book interface{}) error {
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booksColl := d.session.DB(DB_NAME).C(BOOKS_COLL)
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return booksColl.Insert(book)
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}
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func (d *DB) RemoveBook(id bson.ObjectId) error {
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booksColl := d.session.DB(DB_NAME).C(BOOKS_COLL)
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return booksColl.Remove(bson.M{"_id": id})
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}
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func (d *DB) UpdateBook(id bson.ObjectId, data interface{}) error {
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booksColl := d.session.DB(DB_NAME).C(BOOKS_COLL)
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return booksColl.Update(bson.M{"_id": id}, bson.M{"$set": data})
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}
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/* optional parameters: length and start index
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*
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* Returns: list of books, number found and err
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*/
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func (d *DB) GetBooks(query bson.M, r ...int) (books []Book, num int, err error) {
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var start, length int
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if len(r) > 0 {
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length = r[0]
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if len(r) > 1 {
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start = r[1]
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}
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}
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booksColl := d.session.DB(DB_NAME).C(BOOKS_COLL)
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q := booksColl.Find(query).Sort("-_id")
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num, err = q.Count()
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if err != nil {
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return
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}
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if start != 0 {
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q = q.Skip(start)
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}
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if length != 0 {
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q = q.Limit(length)
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}
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err = q.All(&books)
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for i, b := range books {
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books[i].Id = bson.ObjectId(b.Id).Hex()
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}
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return
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}
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/* Get the most visited books
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*/
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func (d *DB) GetVisitedBooks(num int) (books []Book, err error) {
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statsColl := d.session.DB(DB_NAME).C(STATS_COLL)
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mr := NewMR(d.session.DB(DB_NAME))
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bookId, err := mr.GetMostVisited(num, statsColl)
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if err != nil {
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return nil, err
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}
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books = make([]Book, num)
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for i, id := range bookId {
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booksColl := d.session.DB(DB_NAME).C(BOOKS_COLL)
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booksColl.Find(bson.M{"_id": id}).One(&books[i])
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books[i].Id = bson.ObjectId(books[i].Id).Hex()
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}
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return
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}
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/* Get the most downloaded books
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*/
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func (d *DB) GetDownloadedBooks(num int) (books []Book, err error) {
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statsColl := d.session.DB(DB_NAME).C(STATS_COLL)
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mr := NewMR(d.session.DB(DB_NAME))
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bookId, err := mr.GetMostDownloaded(num, statsColl)
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if err != nil {
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return nil, err
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}
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books = make([]Book, num)
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for i, id := range bookId {
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booksColl := d.session.DB(DB_NAME).C(BOOKS_COLL)
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booksColl.Find(bson.M{"_id": id}).One(&books[i])
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books[i].Id = bson.ObjectId(books[i].Id).Hex()
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}
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return
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}
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/* optional parameters: length and start index
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*
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* Returns: list of books, number found and err
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*/
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func (d *DB) GetNewBooks(r ...int) (books []Book, num int, err error) {
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return d.GetBooks(bson.M{"$nor": []bson.M{{"active": true}}}, r...)
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}
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func (d *DB) BookActive(id bson.ObjectId) bool {
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var book Book
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booksColl := d.session.DB(DB_NAME).C(BOOKS_COLL)
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err := booksColl.Find(bson.M{"_id": id}).One(&book)
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if err != nil {
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return false
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}
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return book.Active
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}
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func (d *DB) GetFS(prefix string) *mgo.GridFS {
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return d.session.DB(DB_NAME).GridFS(prefix)
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}
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func (d *DB) GetTags(numTags int) ([]string, error) {
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booksColl := d.session.DB(DB_NAME).C(BOOKS_COLL)
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mr := NewMR(d.session.DB(DB_NAME))
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return mr.GetTags(numTags, booksColl)
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}
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type Visits struct {
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Date int64 "_id"
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Count int "value"
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}
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func (d *DB) GetHourVisits(start time.Time) ([]Visits, error) {
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statsColl := d.session.DB(DB_NAME).C(STATS_COLL)
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mr := NewMR(d.session.DB(DB_NAME))
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return mr.GetHourVisits(start, statsColl)
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}
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func (d *DB) GetDayVisits(start time.Time) ([]Visits, error) {
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statsColl := d.session.DB(DB_NAME).C(STATS_COLL)
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mr := NewMR(d.session.DB(DB_NAME))
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return mr.GetDayVisits(start, statsColl)
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}
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func (d *DB) GetMonthVisits(start time.Time) ([]Visits, error) {
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statsColl := d.session.DB(DB_NAME).C(STATS_COLL)
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mr := NewMR(d.session.DB(DB_NAME))
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return mr.GetMonthVisits(start, statsColl)
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}
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func (d *DB) GetHourDownloads(start time.Time) ([]Visits, error) {
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statsColl := d.session.DB(DB_NAME).C(STATS_COLL)
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mr := NewMR(d.session.DB(DB_NAME))
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return mr.GetHourDownloads(start, statsColl)
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}
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func (d *DB) GetDayDownloads(start time.Time) ([]Visits, error) {
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statsColl := d.session.DB(DB_NAME).C(STATS_COLL)
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mr := NewMR(d.session.DB(DB_NAME))
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return mr.GetDayDowloads(start, statsColl)
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}
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func (d *DB) GetMonthDownloads(start time.Time) ([]Visits, error) {
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statsColl := d.session.DB(DB_NAME).C(STATS_COLL)
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mr := NewMR(d.session.DB(DB_NAME))
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return mr.GetMonthDowloads(start, statsColl)
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}
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