Updated readme with used libraries

README.md

@@ -1,3 +1,11 @@
 # ytbatchdownloader
 
 A simple Youtube downloader to load multiple videos.
+
+## Credits
+
+Used libraries:
+
+[youtube downloader](https://github.com/kkdai/youtube)
+
+[uiprogress](https://github.com/gosuri/uiprogress)

download.go

@@ -6,8 +6,11 @@ import (
 	"log"
 	"os"
 	"regexp"
+	"strings"
+	"sync"
 	//"path/filepath"
 
+	"github.com/gosuri/uiprogress"
 	. "github.com/kkdai/youtube"
 )
 
@@ -21,7 +24,7 @@ func NewBatch(batchFile, destinationDir string) *Batch {
 
 func (b *Batch) Start() {
 	//Start downloading all videos
-
+	log.Println("Start downloading...")
 	//open the file containing yt links
 	linkfile, err := os.Open(b.batchfile)
 	if err != nil {
@@ -34,25 +37,64 @@ func (b *Batch) Start() {
 	//That should be enough for yt links.
 	scanner := bufio.NewScanner(linkfile)
 
+	//Start rendering for progressbar
+	//This is the initialization the actual bars
+	//will be instantiated in the go routines
+	uiprogress.Start()
+
+	var wg sync.WaitGroup
+
 	for scanner.Scan() {
 		//Call download
-		go downloadVideo(b.destDir, scanner.Text())
+		//add go routine to wait for
+		if strings.TrimSpace(scanner.Text()) != "" {
+			wg.Add(1)
+			log.Println(scanner.Text())
+			go downloadVideo(b.destDir, strings.TrimSpace(scanner.Text()), &wg)
+		} else {
+			log.Println("Ignoring blank line")
+		}
 	}
 
+	//wait for all go routines to finish
+	wg.Wait()
+	log.Println("All downloads finished")
 	if err := scanner.Err(); err != nil {
 		log.Fatal(err)
 	}
 }
 
-func downloadVideo(destDir, url string) {
+func downloadVideo(destDir, url string, wg *sync.WaitGroup) {
 	// NewYoutube(debug) if debug parameter will set true we can log of messages
+	//defer Done() so that WaitGroup knows when the routine finishes
+	defer wg.Done()
 	y := NewYoutube(false)
 	y.DecodeURL(url)
 	re := regexp.MustCompile("(mp4|webm|3gpp)")
 	fileext := re.FindString(y.StreamList[0]["type"])
 	filename := fmt.Sprintf("%s/%s.%s", destDir, y.StreamList[0]["title"], fileext)
+	filenameRune := []rune(y.StreamList[0]["title"])
+	shortFilename := string(filenameRune[0:20]) + "..."
 
-	log.Println("Start downloading:", filename)
+	go func() {
-	y.StartDownload(filename)
+		bar := uiprogress.AddBar(100).AppendCompleted()
-	log.Println("Finished downloading:", filename)
+
+		//Custom decorator (the short name in front of the bar)
+		bar.PrependFunc(func(b *uiprogress.Bar) string {
+			return shortFilename
+		})
+
+		var i int64 = 0
+		for i < 100 {
+			i = <-y.DownloadPercent
+			bar.Set(int(i))
+		}
+	}()
+
+	//start the actual download
+	err := y.StartDownload(filename)
+	if err != nil {
+		log.Println("Failed to download", url)
+		log.Println("Message:", err.Error())
+	}
 }