//Open a catcher from the given file (creating it if it doesn't exist) and start catching
//podcasts
func StartCatcher(configSaveLocation string) Catcher {
if !pogoutils.FileExists("downloads/") {
pogoutils.CreateFolder("downloads")
}
catcher := Catcher{}
_, er := os.Stat(configSaveLocation)
if er == nil {
contents, err := ioutil.ReadFile(configSaveLocation)
if err == nil {
json.Unmarshal(contents, &catcher)
fmt.Println("Loaded from file")
}
} else {
//Initial creation of a catcher
catcher.ConfigLocation = configSaveLocation
catcher.RefreshInterval = time.Minute * 30
catcher.SaveData()
}
//Temporary default for debugging purposes...
catcher.RefreshInterval = time.Minute * 2
catcher.addFeed = make(chan PodFeed)
catcher.updatedPodcasts = make(chan []PodFeed)
catcher.ticker = time.NewTicker(catcher.RefreshInterval)
go catcher.Refresher()
return catcher
}
//Handles the CSS, JS and Bootstrap resources
func resHandler(w http.ResponseWriter, r *http.Request) {
_, filename := path.Split(r.URL.Path)
fullPath := "server/res/" + filename
fileExists := pogoutils.FileExists(fullPath)
if fileExists {
lastModTime := pogoutils.LastMod(fullPath)
//This checks whether or not the Header was submitted with
//If-Modified-Since, which reduces server IO, only do if Cache is enabled
if r.Header["If-Modified-Since"] != nil && Cache {
//RFC1123 is the standard date format used with HTTP
headerTime, _ := time.Parse(time.RFC1123, r.Header["If-Modified-Since"][0])
if !headerTime.Before(lastModTime) {
w.WriteHeader(http.StatusNotModified)
return
}
}
//Writer the header and content
if Cache {
w.Header().Add("Last-Modified", lastModTime.Format(time.RFC1123))
}
//Go has a function for serving files easily
//I used this function because it reduces the complexity of the code
//And it seems to do a good job handling MIME types
http.ServeFile(w, r, fullPath)
} else {
w.WriteHeader(http.StatusNotFound)
fmt.Println(fullPath, "not found")
}
}
//Serves up video/audio
func downloadHandler(w http.ResponseWriter, r *http.Request) {
_, filename := path.Split(r.URL.Path)
if pogoutils.FileExists("downloads/" + filename) {
fmt.Println("Serving downloads/", filename)
http.ServeFile(w, r, "downloads/"+filename)
}
}
//Determines whether or not the podcast has been downloaded
func (episode PodEpisode) Downloaded() bool {
return pogoutils.FileExists(episode.DownloadedFilename())
}