129 lines
3.7 KiB
Go
129 lines
3.7 KiB
Go
package http
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import (
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"dwelling-radio/internal/radio"
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"dwelling-radio/pkg/oggtag"
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"encoding/json"
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"fmt"
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"log"
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"net/http"
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"time"
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)
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type DJHandlers struct {
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listeners *radio.ListenerCounter
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playlist *radio.Playlist
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songList *radio.SongList
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}
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func NewDJHandlers(l *radio.ListenerCounter, p *radio.Playlist, sl *radio.SongList, slLen int) *DJHandlers {
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return &DJHandlers{listeners: l, playlist: p, songList: sl}
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}
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func (dj *DJHandlers) ListenersGet(w http.ResponseWriter, _ *http.Request) {
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w.Header().Add("Content-Type", "application/json")
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json.NewEncoder(w).Encode(dj.listeners)
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}
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func (dj *DJHandlers) ListenersInc(w http.ResponseWriter, _ *http.Request) {
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l := dj.listeners.Inc()
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go dj.songList.UpdateCurrentMaxListeners(l)
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w.WriteHeader(http.StatusCreated)
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w.Header().Add("Content-Type", "text/plain")
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fmt.Fprint(w, l)
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}
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func (dj *DJHandlers) ListenersDec(w http.ResponseWriter, _ *http.Request) {
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l, err := dj.listeners.Dec()
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if err != nil {
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log.Print(err)
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http.Error(w, err.Error(), http.StatusBadRequest)
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return
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}
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w.WriteHeader(http.StatusOK)
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w.Header().Add("Content-Type", "text/plain")
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fmt.Fprint(w, l)
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}
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func (dj *DJHandlers) PlaylistNext(w http.ResponseWriter, _ *http.Request) {
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w.Header().Add("Content-Type", "text/plain")
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nxt := dj.playlist.Next()
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if nxt == "" {
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log.Println("the end of a playlist has been reached")
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} else {
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go func() {
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oggf, err := oggtag.NewOggFile(nxt)
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if err != nil {
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log.Println("cannot read an OGG file", nxt, ":", err)
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http.Error(w, "cannot read an OGG file", http.StatusInternalServerError)
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return
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}
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song := radio.Song{
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Artist: oggf.GetTag("artist"),
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Title: oggf.GetTag("title"),
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Duration: oggf.GetDuration(),
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MaxListeners: dj.listeners.Current(),
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StartAt: time.Now()}
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dj.songList.Add(song)
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radio.CheckAndUpdateMostListenedSong(*dj.songList.Current())
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}()
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}
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fmt.Fprintln(w, nxt)
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}
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func (dj *DJHandlers) Song(w http.ResponseWriter, r *http.Request) {
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w.Header().Add("Content-Type", "application/json")
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err := json.NewEncoder(w).Encode(dj.songList.Current())
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if err != nil {
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log.Println("DJHandlers.Song:", err)
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http.Error(w, "cannot obtain current song", http.StatusInternalServerError)
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}
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}
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func (dj *DJHandlers) Songs(w http.ResponseWriter, r *http.Request) {
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w.Header().Add("Content-Type", "application/json")
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err := json.NewEncoder(w).Encode(dj.songList.List())
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if err != nil {
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log.Println("DJHandlers.Songs:", err)
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http.Error(w, "cannot obtain list of last songs", http.StatusInternalServerError)
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}
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}
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func (dj *DJHandlers) Status(w http.ResponseWriter, r *http.Request) {
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w.Header().Add("Content-Type", "application/json")
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var curSong *radio.Song = nil
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if dj.songList.Current() != nil {
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curSong = &radio.Song{}
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*curSong = *dj.songList.Current()
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}
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err := json.NewEncoder(w).Encode(&struct {
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Current *radio.Song `json:"current_song,omitempty"`
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Listeners *radio.ListenerCounter `json:"listeners"`
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List []radio.Song `json:"last_songs,omitempty"`
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Mls *radio.MostListenedSong `json:"most_listened_song,omitempty"`
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}{
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Current: curSong,
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Listeners: dj.listeners,
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List: dj.songList.List(),
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Mls: radio.MostListened()})
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if err != nil {
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log.Println("DJHandlers.Status:", err)
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http.Error(w, "status parsing failed", http.StatusInternalServerError)
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}
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}
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func (dj *DJHandlers) MostListenedSong(w http.ResponseWriter, r *http.Request) {
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w.Header().Add("Content-Type", "application/json")
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mls := radio.MostListened()
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if mls == nil {
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w.WriteHeader(http.StatusNotFound)
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return
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}
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err := json.NewEncoder(w).Encode(mls)
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if err != nil {
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log.Println("DJHandlers.MostListenedSong:", err)
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http.Error(w, "MostListenedSong parsing failed", http.StatusInternalServerError)
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}
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}
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