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dwelling-radio/internal/handlers/handlers.go

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package handlers
import (
"dwelling-radio/internal/configuration"
"dwelling-radio/internal/radio"
"dwelling-radio/pkg/logging"
"dwelling-radio/pkg/utils"
"dwelling-radio/web"
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"encoding/json"
"net/http"
"time"
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)
const FormatISO8601 = "2006-01-02T15:04:05-0700"
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type NotFoundData struct {
MainSite string
}
type IndexData struct {
MainSite string
Status *radio.IcecastStatus
Songs []radio.Song
}
type RadioHandlers struct {
conf *configuration.Configuration
logErr *logging.Logger
}
func NewRadioHandlers(conf *configuration.Configuration, lErr *logging.Logger) *RadioHandlers {
web.CompileTemplates(lErr)
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return &RadioHandlers{
conf: conf,
logErr: lErr}
}
func (h *RadioHandlers) AssetsFS() http.FileSystem {
return web.Assets()
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}
func (h *RadioHandlers) Index(w http.ResponseWriter, r *http.Request) {
status, err := radio.IcecastGetStatus(h.conf.Icecast.URL)
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if err != nil {
h.logErr.Println("failed to get Icecast status:", err)
} else {
if tim, err := time.Parse(time.RFC1123Z, status.ServerStartDate); err == nil {
status.ServerStartDate = utils.ToClientTimezone(tim, r).Format(time.RFC1123)
}
if tim, err := time.Parse(FormatISO8601, status.ServerStartISO8601); err == nil {
status.ServerStartISO8601 = utils.ToClientTimezone(tim, r).Format(FormatISO8601)
}
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}
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songs, err := radio.IcecastLastPlayedSongs(h.conf.ListLastNSongs,
h.conf.Icecast.Playlist)
if err != nil {
h.logErr.Println("cannot retrieve last songs:", err)
} else {
for i := 0; i < len(songs); i++ {
if tim, err := time.Parse(radio.SongTimeFormat, songs[i].Time); err == nil {
songs[i].Time = utils.ToClientTimezone(tim, r).Format("15:04")
}
}
}
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if err := web.IndexTemplate.Execute(w, &IndexData{
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MainSite: utils.MainSite(r.Host),
Status: status,
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Songs: songs,
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}); err != nil {
h.logErr.Fatalln("failed to execute Index template:", err)
http.Error(w, "cannot execute Index template", http.StatusInternalServerError)
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}
}
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func (h *RadioHandlers) Status(w http.ResponseWriter, r *http.Request) {
status, err := radio.IcecastGetStatus(h.conf.Icecast.URL)
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if err != nil {
h.logErr.Println("cannot retrieve Icecast status:", err)
http.Error(w, "cannot retrieve Icecast status", http.StatusInternalServerError)
return
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}
if tim, err := time.Parse(time.RFC1123Z, status.ServerStartDate); err == nil {
status.ServerStartDate = utils.ToClientTimezone(tim, r).Format(time.RFC1123)
}
if tim, err := time.Parse(FormatISO8601, status.ServerStartISO8601); err == nil {
status.ServerStartISO8601 = utils.ToClientTimezone(tim, r).Format(FormatISO8601)
}
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w.Header().Add("Content-Type", "application/json")
json.NewEncoder(w).Encode(status)
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}
func (h *RadioHandlers) LastSong(w http.ResponseWriter, r *http.Request) {
song, err := radio.IcecastLastSong(h.conf.Icecast.Playlist)
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if err != nil {
h.logErr.Println("cannot retrieve last songs:", err)
}
if song.Time == "" {
w.WriteHeader(http.StatusNotFound)
return
}
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if tim, err := time.Parse(radio.SongTimeFormat, song.Time); err == nil {
song.Time = utils.ToClientTimezone(tim, r).Format("15:04")
}
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w.Header().Add("Content-Type", "application/json")
json.NewEncoder(w).Encode(song)
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}
func (h *RadioHandlers) Playlist(w http.ResponseWriter, _ *http.Request) {
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w.Header().Add("Content-Disposition", "attachment; filename=\"radio.arav.top.m3u\"")
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fc, _ := web.AssetsGetFile("radio.arav.top.m3u")
w.Write(fc)
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}