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package main
import (
"fmt"
"http"
"exp/template"
mysql "github.com/Philio/GoMySQL"
"os"
)
type Song struct {
Yid string
Title string
User string
}
type Playlist struct {
Id string
Songs []*Song
}
var templates map[string]*template.Template
const debug = true
var db *mysql.Client
// given an id ('abcd1234'), return the pid (1)
func getpid(id string) int {
query, err := db.Prepare("SELECT `pid` FROM `playlist` WHERE `id` = ?;")
if err != nil {
return -1
}
err = query.BindParams(id)
if err != nil {
return -1
}
err = query.Execute()
if err != nil {
return -1
}
var pid int
query.BindResult(&pid)
_, err = query.Fetch()
if err != nil {
return -1
}
err = query.FreeResult()
if err != nil {
return -1
}
return pid
}
func home(w http.ResponseWriter, r *http.Request) {
fmt.Fprintf(w, "path is %s", r.URL.Path[1:])
}
func playlist(w http.ResponseWriter, r *http.Request) {
id := r.URL.Path[len("/p/"):]
if len(id) != 8 {
http.Redirect(w, r, "/", 303)
return
}
query, err := db.Prepare("SELECT `yid`,`title`,`user` FROM `playlist` JOIN `song` WHERE `id` = ?;")
if err != nil {
http.Error(w, err.String(), http.StatusInternalServerError)
return
}
err = query.BindParams(id)
if err != nil {
http.Error(w, err.String(), http.StatusInternalServerError)
return
}
err = query.Execute()
if err != nil {
http.Error(w, err.String(), http.StatusInternalServerError)
return
}
playlist := Playlist{Id: id, Songs: make([]*Song, 0, 2)}
for {
song := new(Song)
query.BindResult(&song.Yid, &song.Title, &song.User)
eof, err := query.Fetch()
if err != nil {
http.Error(w, err.String(), http.StatusInternalServerError)
return
}
if eof {
break
}
playlist.Songs = append(playlist.Songs, song)
}
err = query.FreeResult()
if err != nil {
http.Error(w, err.String(), http.StatusInternalServerError)
return
}
if debug {
t, err := template.ParseFile("templates/p.html")
if err != nil {
http.Error(w, err.String(), http.StatusInternalServerError)
return
}
err = t.Execute(w, playlist)
if err != nil {
w.Write([]byte(err.String()))
fmt.Fprintln(os.Stderr, err.String())
return
}
} else {
err = templates["p"].Execute(w, playlist)
if err != nil {
fmt.Fprintln(os.Stderr, err.String())
}
}
}
func add(w http.ResponseWriter, r *http.Request) {
q := r.URL.Query()
pid := getpid(q.Get("pid"))
if pid == -1 {
http.Error(w, "invalid pid", http.StatusInternalServerError)
return
}
sql :="INSERT INTO `song` (`pid`,`yid`,`title`,`user`) VALUES(%d,'%s','%s','%s')"
sql = fmt.Sprintf(sql, pid,
db.Escape(q.Get("yid")),
db.Escape(q.Get("title")),
db.Escape(q.Get("user")))
err := db.Query(sql)
if err != nil {
http.Error(w, err.String(), http.StatusInternalServerError)
return
}
w.Write([]byte("1"))
}
func main() {
templates = make(map[string]*template.Template)
for _, path := range []string{"p"} {
t, err := template.ParseFile("templates/" + path + ".html")
if err != nil {
fmt.Println(err)
return
}
templates[path] = t
}
var err os.Error
db, err = mysql.DialTCP("raylu.net", "audio", "audio", "audio")
if err != nil {
fmt.Println(err)
os.Exit(1)
}
http.HandleFunc("/", home)
http.HandleFunc("/p/", playlist)
http.HandleFunc("/add/", add)
http.ListenAndServe(":8000", nil)
}
|
