🎨 improve mp3 conversion, refactor code, update readme doc

.gitignore

@@ -16,4 +16,5 @@
 # Project-local glide cache, RE: https://github.com/Masterminds/glide/issues/736
 .glide/
 pkg
-.idea
+.idea
+releases

README.md

@@ -21,6 +21,12 @@ gonyvido --url https://www.youtube.com/watch?v=3sCGysVB41k
 go get github.com/noelyahan/gonyvido
 ```
 
+## Quick Use
+
+```
+gonyvido -path "./download/mp3" -mp3 -url https://www.youtube.com/watch?v=_P7S2lKif-A
+```
+
 ## Usage
 
 ```go
@@ -37,15 +43,15 @@ func main() {
     // if you need only the audio
     api.GetHQVideo(url).Download().ToMP3()
     /*
-    gonyvido.GetHQVideo(url) - > get high quality video
-    gonyvido.GetMQVideo(url) - > get medium quality video
-    gonyvido.GetLQVideo(url) - > get low quality video
+    api.GetHQVideo(url) - > get high quality video
+    api.GetMQVideo(url) - > get medium quality video
+    api.GetLQVideo(url) - > get low quality video
     */	
 }
 ```
 ## Getting started
 
-If you want to know what it is like to build applications with gonyvido, check [main.go](main/main.go).
+If you want to know what it is like to build applications with gonyvido, check [main.go](main.go).
 
 ## Related projects
 

domain/video.go

@@ -126,7 +126,7 @@ func (v *Video) Download() *Video {
 		}
 		defer resp.Body.Close()
 		if resp.StatusCode != 200 {
-			log.Fatalln("Please check your internet connection", err)
+			log.Fatalln("Download failed")
 		}
 		v.videoLength = int(resp.ContentLength)
 
@@ -155,26 +155,26 @@ func (v *Video) ToMP3() {
 	<-v.done
 	mp3 := v.getFileName() + ".mp3"
 	mp4 := v.getFileName() + v.getExt()
-	removeMP4 := func() {
-		err := os.Remove(v.savePath + mp4)
-		if err != nil {
-			fmt.Errorf("Could not delete: ", mp4)
-		}
-	}
+	//file := v.savePath + mp4
 	ffmpeg, err := exec.LookPath("ffmpeg")
 	if err != nil {
-		removeMP4()
 		log.Fatal("ffmpeg not found")
 	}
 	fmt.Println(`Converting:	` + v.GetTitle() + ` to mp3`)
-	cmd := exec.Command(ffmpeg, "-y", "-loglevel", "quiet", "-i", v.getSavePath()+mp4, "-b:a", "320K", "-vn", v.getSavePath()+mp3)
+	cmd := exec.Command(ffmpeg, "-y", "-loglevel", "quiet", "-i", v.getSavePath() + mp4, "-b:a", "320K", "-vn", v.getSavePath() + mp3)
 	cmd.Stdin = os.Stdin
 	cmd.Stdout = os.Stdout
 	cmd.Stderr = os.Stderr
 	if err := cmd.Run(); err != nil {
-		removeMP4()
 		log.Fatal("Failed to convert the mp3: ", err)
 	}
 	fmt.Println(`Finished:	` + v.GetTitle() + `.mp3`)
-	removeMP4()
+}
+
+
+func removeFile(file string) {
+	err := os.Remove(file)
+	if err != nil {
+		fmt.Println("Could not delete: ", file, err)
+	}
 }

main.go

@@ -15,8 +15,8 @@ const (
 func main() {
 	url := flag.String("url", defaultUrl, "Video download url")
 	savePath := flag.String("path", defaultSavePath, "Video download path")
-	quality := flag.String("quality", defaultQuality, "Video download quality")
-	toMp3 := flag.Bool("mp3", false, "y/n to download mp3")
+	quality := flag.String("quality", defaultQuality, "Video download quality <high, medium, low>")
+	toMp3 := flag.Bool("mp3", false, "Enable this flag for mp3 file")
 
 	flag.Parse()
 

youtube/youtube.go

@@ -13,7 +13,7 @@ import (
 
 const (
 	YoutubeVideoInfoApi = "http://youtube.com/get_video_info?video_id="
-	YoutubeWatchUrl     = "//www.youtube.com/watch?v"
+	YoutubeWatchUrl     = "https://www.youtube.com/watch?v"
 	YoutubeShortUrl     = "youtu.be"
 )