1 files changed, 77 insertions, 0 deletions
diff --git a/downloader/util.go b/downloader/util.go
new file mode 100644
index 0000000..f744fad
--- /dev/null
+++ b/downloader/util.go
@@ -0,0 +1,77 @@
+package downloader
+
+import (
+	"encoding/json"
+	"io/ioutil"
+	"net/url"
+	"os/exec"
+	"time"
+
+	"github.com/mammothbane/thulani-go/wav"
+	"github.com/op/go-logging"
+)
+
+var log = logging.MustGetLogger("downloader")
+
+// responsible for decoding from youtube
+type videoInfo struct {
+	Title       string        `json:"fulltitle"`
+	UrlStr      string        `json:"url"`
+	DurationSec int           `json:"duration"`
+	Url         *url.URL      `json:"-"`
+	Duration    time.Duration `json:"-"`
+}
+
+func info(inUrl string) (*videoInfo, error) {
+	dl := exec.Command("youtube-dl", "-f", "bestaudio", "-x", "-j", inUrl)
+
+	outpipe, err := dl.StdoutPipe()
+	if err != nil {
+		return nil, err
+	}
+
+	errpipe, err := dl.StderrPipe()
+	if err != nil {
+		return nil, err
+	}
+
+	err = dl.Start()
+	if err != nil {
+		log.Errorf("starting youtube-dl failed")
+		return nil, err
+	}
+
+	o, ierr := ioutil.ReadAll(outpipe)
+	if ierr != nil {
+		log.Errorf("unable to read from output pipe")
+		return nil, err
+	}
+
+	e, ierr := ioutil.ReadAll(errpipe)
+	if ierr != nil {
+		log.Errorf("unable to read from error pipe")
+		return nil, err
+	}
+
+	if err := dl.Wait(); err != nil {
+		log.Errorf("error:\n%v", string(e))
+		return nil, err
+	}
+
+	v := videoInfo{}
+	if err := json.Unmarshal(o, &v); err != nil {
+		return nil, err
+	}
+
+	v.Duration = time.Duration(v.DurationSec) * time.Second
+	v.Url, err = url.Parse(v.UrlStr)
+
+	//tgt, err := url.Parse(string(o))
+	//out := tgt.Scheme + "://" + tgt.Host + tgt.Path + "?" + tgt.Query().Encode()
+	return &v, err
+}
+
+type wavBundle struct {
+	wav     *wav.Wav
+	cleanup func()
+}