From c6b1a97b2dda8111b118c339643a4491529282c0 Mon Sep 17 00:00:00 2001
From: Julio Biason <julioandre@cwi.com.br>
Date: Fri, 6 Sep 2013 10:18:40 -0300
Subject: [PATCH] detects if someone else picked one of your songs; mark the
 round as done

---
 lyricsnode/routes/round.js  | 82 ++++++++++++++++++++++++++++---------
 lyricsnode/views/index.html |  2 +-
 2 files changed, 64 insertions(+), 20 deletions(-)

diff --git a/lyricsnode/routes/round.js b/lyricsnode/routes/round.js
index 84e40c4..5cb9d8c 100644
--- a/lyricsnode/routes/round.js
+++ b/lyricsnode/routes/round.js
@@ -25,6 +25,31 @@ function acronymize(phrase) {
   return letters.join('');
 }
 
+/** return a json response */
+function asJson(res, obj) {
+  console.log(JSON.stringify(obj));
+  res.writeHead(200, {'Content-Type': 'application/json'});
+  res.write(JSON.stringify(obj));
+  res.end();
+}
+
+/** mark a song as played */
+function markAsDone(song_id, after) {
+  var now = new Date();
+  db.run('UPDATE songs SET done_in = ? WHERE id = ?', [
+      now.toJSON(), song_id
+    ], function (error) {
+      if (error) {
+        throw error;
+      }
+
+      if (after) {
+        after();
+      }
+    }
+  );
+}
+
 /**********************************************************************
  * Open the database
  *********************************************************************/
@@ -55,7 +80,7 @@ db = new sqlite3.Database(dbName(), sqlite3.OPEN_READWRITE, function (error) {
 /**********************************************************************
  * Select a song and display it
  *********************************************************************/
-exports.index = function (req, res) {
+function index(req, res) {
   var song = null;
   var artist = null;
   var lyrics = null;
@@ -116,6 +141,8 @@ exports.index = function (req, res) {
   });
 }
 
+exports.index = index;
+
 /***********************************************************************
  * Support for the small box with the "others" picks
  **********************************************************************/
@@ -127,7 +154,32 @@ exports.others = function (req, res) {
   console.log('Artist: ' + posted_artist);
   console.log('Song: ' + posted_song);
 
-  var result = {status: '', message: ''}
+  var result = {status: '', message: ''};
+
+  function duplicateOrNotDone(err, song) {
+    if (err) {
+      throw err;
+    }
+
+    // the record will always exist, it's just a matter of "does it have a done_in"?
+    console.log('Song done in ' + song.done_in);
+
+    if (song.done_in) {
+      // yup, already picked that song
+      result.status = 'ERROR';
+      result.message = 'Song already picked';
+
+      asJson(res, result);
+    } else {
+      // it was one of your songs that someone else picked.
+      // just tell the user that and update it in the background
+      result.status = 'OK';
+      result.message = 'Someone picked one of your songs';
+      asJson(res, result);
+
+      markAsDone(song.id);
+    }
+  }
 
   function insertSong(artist) {
     var now = new Date();
@@ -141,19 +193,18 @@ exports.others = function (req, res) {
         if (error) {
           // expected: artist AND song already picked
           console.log('Insert failed, possible duplicate');
-          result.status = 'ERROR';
-          result.message = 'Song already picked';
+          db.get('SELECT * FROM songs WHERE artist = ? AND title = ?', [
+              artist,
+              posted_song
+            ], duplicateOrNotDone
+          );
         } else {
           console.log('Insert succeded');
           // things went alright
           result.status = 'OK';
           result.message = 'Added';
+          asJson(res, result);
         }
-
-        console.log(JSON.stringify(result));
-        res.writeHead(200, {'Content-Type': 'application/json'});
-        res.write(JSON.stringify(result));
-        res.end();
       }
     );
   }
@@ -186,13 +237,6 @@ exports.others = function (req, res) {
  *********************************************************************/
 
 exports.played = function (req, res) {
-  var now = new Date();
-  db.run('UPDATE songs SET done_in = ? WHERE id = ?', [
-      now.toJSON(), req.body.id
-    ], function (error) {
-      if (error) {
-        throw error;
-      }
-    }
-  );
-}
+  markAsDone(req.body.id);
+  index(req, res);
+};
diff --git a/lyricsnode/views/index.html b/lyricsnode/views/index.html
index d662d94..7d79e14 100644
--- a/lyricsnode/views/index.html
+++ b/lyricsnode/views/index.html
@@ -76,7 +76,7 @@
 
 	<div class='row'>
 		<div class='large-12 columns form-close'>
-			<form method='POST' action='/song/played/'>
+			<form method='POST' action='/round/played/'>
 				<input type='hidden' name='id' value='{{ id }}'>
 				<a href='/' class='button radius secondary small'>Skip</a>
 				<button class='button radius small'>Next</button>