server track downloader

Author: chrisweb

bootstrap.js

@@ -1,3 +1,15 @@
-var audioDataAnalyzer = require('audio_data_analyzer');
+var AudioDataAnalyzer = require('./library/audio_data_analyzer').analyzer;
 
-var values = audioDataAnalyzer.getValues();
+var TrackDownloader = require('./library/track_downloader').downloader;
+
+var audioDataAnalyzer = new AudioDataAnalyzer();
+
+var trackDownloader = new TrackDownloader();
+
+trackDownloader.writeTrackToDisc(415208);
+
+
+
+var values = audioDataAnalyzer.getValues();
+
+console.log(values);

library/audio_data_analyzer.js

@@ -0,0 +1,19 @@
+/**
+ * 
+ * @returns {analyzerConstructor}
+ */
+var analyzer = function analyzerConstructor() {
+    
+};
+
+/**
+ * 
+ * @returns {undefined}
+ */
+analyzer.prototype.getValues = function getValuesFunction() {
+    
+    
+    
+};
+
+module.exports.analyzer = analyzer;

library/track_downloader.js

@@ -0,0 +1,105 @@
+/**
+ * 
+ * @returns {downloaderConstructor}
+ */
+var downloader = function downloaderConstructor() {
+    
+};
+
+/**
+ * 
+ * fetches a track from jamendo.com and writes it into the temporary folder
+ * on disc
+ * 
+ * @param {type} trackId
+ * @param {type} temporaryTracksDirecotry
+ * @param {type} format
+ * @returns {undefined}
+ */
+downloader.prototype.writeTrackToDisc = function(trackId, temporaryTracksDirecotry, format) {
+
+    if (temporaryTracksDirecotry === undefined) {
+        
+        temporaryTracksDirecotry = '';
+        
+    }
+    
+    if (format === undefined) {
+        
+        format = 'ogg';
+        
+    }
+    
+    var formatCode;
+    
+    switch(format) {
+        case 'mp3':
+            formatCode = 'mp31';
+            break;
+        case 'ogg':
+            formatCode = 'ogg1';
+            break;
+        default:
+            throw 'unsupported track format';
+    }
+
+    var trackPath = temporaryTracksDirecotry + '/' + trackId + '.' + format;
+
+    // 
+    var options = {
+        hostname: 'storage-new.newjamendo.com',
+        port: 80,
+        path: '/download/track/' + trackId + '/' + formatCode,
+        method: 'GET'
+    };
+
+    var writeStream = fs.createWriteStream(trackPath);
+
+    writeStream.on('open', function() {
+
+        var httpRequest = http.request(options, function(httpResponse) {
+
+            console.log('writeTrackToDisc httpRequest STATUS: ' + httpResponse.statusCode);
+            console.log('writeTrackToDisc httpRequest HEADERS: ' + JSON.stringify(httpResponse.headers));
+
+            httpResponse.on('data', function(chunk) {
+
+                writeStream.write(chunk);
+
+            });
+
+            httpResponse.on('end', function() {
+
+                console.log('file ' + trackFileName + ' got downloaded into ' + trackPath);
+
+                writeStream.end();
+
+                moveTrack();
+
+            });
+
+        });
+
+        httpRequest.on('error', function(error) {
+
+            console.log('writeTrackToDisc, http request error: ' + error.message);
+
+            writeStream.end();
+
+        });
+
+        httpRequest.end();
+
+    });
+
+    writeStream.on('error', function(error) {
+
+        console.log('writeTrackToDisc writeStream, error: ' + error);
+
+        writeStream.end();
+
+    });
+
+};
+
+module.exports.downloader = downloader;