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// Package app manages main application server.
package app
import (
"html/template"
"log"
"net"
"net/http"
"path"
rice "github.com/GeertJohan/go.rice"
"github.com/fsnotify/fsnotify"
"github.com/gorilla/mux"
"github.com/wybiral/tube/media"
)
//go:generate rice embed-go
// App represents main application.
type App struct {
Config *Config
Library *media.Library
Watcher *fsnotify.Watcher
Templates *template.Template
Feed []byte
Listener net.Listener
Router *mux.Router
}
// NewApp returns a new instance of App from Config.
func NewApp(cfg *Config) (*App, error) {
if cfg == nil {
cfg = DefaultConfig()
}
a := &App{
Config: cfg,
}
// Setup Library
a.Library = media.NewLibrary()
// Setup Watcher
w, err := fsnotify.NewWatcher()
if err != nil {
return nil, err
}
a.Watcher = w
// Setup Listener
ln, err := newListener(cfg.Server)
if err != nil {
return nil, err
}
a.Listener = ln
// Setup Templates
box := rice.MustFindBox("../templates")
index := template.New("index")
a.Templates = template.Must(index.Parse(box.MustString("index.html")))
// Setup Router
r := mux.NewRouter().StrictSlash(true)
r.HandleFunc("/", a.indexHandler).Methods("GET")
r.HandleFunc("/v/{id}.mp4", a.videoHandler).Methods("GET")
r.HandleFunc("/v/{prefix}/{id}.mp4", a.videoHandler).Methods("GET")
r.HandleFunc("/t/{id}", a.thumbHandler).Methods("GET")
r.HandleFunc("/t/{prefix}/{id}", a.thumbHandler).Methods("GET")
r.HandleFunc("/v/{id}", a.pageHandler).Methods("GET")
r.HandleFunc("/v/{prefix}/{id}", a.pageHandler).Methods("GET")
r.HandleFunc("/feed.xml", a.rssHandler).Methods("GET")
// Static file handler
fsHandler := http.StripPrefix(
"/static",
http.FileServer(rice.MustFindBox("../static").HTTPBox()),
)
r.PathPrefix("/static/").Handler(fsHandler).Methods("GET")
a.Router = r
return a, nil
}
// Run imports the library and starts server.
func (a *App) Run() error {
for _, pc := range a.Config.Library {
p := &media.Path{
Path: pc.Path,
Prefix: pc.Prefix,
}
err := a.Library.AddPath(p)
if err != nil {
return err
}
err = a.Library.Import(p)
if err != nil {
return err
}
a.Watcher.Add(p.Path)
}
buildFeed(a)
go startWatcher(a)
return http.Serve(a.Listener, a.Router)
}
// HTTP handler for /
func (a *App) indexHandler(w http.ResponseWriter, r *http.Request) {
log.Printf("/")
pl := a.Library.Playlist()
if len(pl) > 0 {
http.Redirect(w, r, "/v/"+pl[0].ID, 302)
} else {
a.Templates.ExecuteTemplate(w, "index", &struct {
Playing *media.Video
Playlist media.Playlist
}{
Playing: &media.Video{ID: ""},
Playlist: a.Library.Playlist(),
})
}
}
// HTTP handler for /v/id
func (a *App) pageHandler(w http.ResponseWriter, r *http.Request) {
vars := mux.Vars(r)
id := vars["id"]
prefix, ok := vars["prefix"]
if ok {
id = path.Join(prefix, id)
}
log.Printf("/v/%s", id)
playing, ok := a.Library.Videos[id]
if !ok {
a.Templates.ExecuteTemplate(w, "index", &struct {
Playing *media.Video
Playlist media.Playlist
}{
Playing: &media.Video{ID: ""},
Playlist: a.Library.Playlist(),
})
return
}
w.Header().Set("Content-Type", "text/html; charset=utf-8")
a.Templates.ExecuteTemplate(w, "index", &struct {
Playing *media.Video
Playlist media.Playlist
}{
Playing: playing,
Playlist: a.Library.Playlist(),
})
}
// HTTP handler for /v/id.mp4
func (a *App) videoHandler(w http.ResponseWriter, r *http.Request) {
vars := mux.Vars(r)
id := vars["id"]
prefix, ok := vars["prefix"]
if ok {
id = path.Join(prefix, id)
}
log.Printf("/v/%s", id)
m, ok := a.Library.Videos[id]
if !ok {
return
}
title := m.Title
disposition := "attachment; filename=\"" + title + ".mp4\""
w.Header().Set("Content-Disposition", disposition)
w.Header().Set("Content-Type", "video/mp4")
http.ServeFile(w, r, m.Path)
}
// HTTP handler for /t/id
func (a *App) thumbHandler(w http.ResponseWriter, r *http.Request) {
vars := mux.Vars(r)
id := vars["id"]
prefix, ok := vars["prefix"]
if ok {
id = path.Join(prefix, id)
}
log.Printf("/t/%s", id)
m, ok := a.Library.Videos[id]
if !ok {
return
}
w.Header().Set("Cache-Control", "public, max-age=7776000")
if m.ThumbType == "" {
w.Header().Set("Content-Type", "image/jpeg")
w.Write(rice.MustFindBox("../static").MustBytes("defaulticon.jpg"))
} else {
w.Header().Set("Content-Type", m.ThumbType)
w.Write(m.Thumb)
}
}
// HTTP handler for /feed.xml
func (a *App) rssHandler(w http.ResponseWriter, r *http.Request) {
w.Header().Set("Cache-Control", "public, max-age=7776000")
w.Header().Set("Content-Type", "text/xml")
w.Write(a.Feed)
}
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