1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
121
122
123
124
125
126
127
128
129
130
131
132
133
134
135
136
137
138
139
140
141
142
143
144
145
146
147
148
149
150
151
152
153
154
155
156
157
158
159
160
161
162
163
164
165
166
167
168
169
170
171
172
173
174
175
176
177
178
179
180
181
182
183
184
185
186
187
188
189
190
191
192
193
194
195
196
197
198
199
|
// require built-in modules
var fs = require('fs');
var path = require('path');
// require external libs
var Hapi = require('hapi');
var pg = require('pg');
// require custom libs
var utils = require('./utils');
var server = new Hapi.Server();
server.connection({
host: '0.0.0.0',
port: process.env.PORT || 8000
});
server.app.DB_URI = process.env.DATABASE_URL || 'postgres://postgres:postgres@127.0.0.1/solfege';
server.views({
engines: {
html: require('handlebars')
},
path: path.join(__dirname, 'templates')
});
server.method('search', function(query, next) {
return pg.connect(server.app.DB_URI, function(err, client, done) {
var norm = utils.normalize(query);
var sql = 'SELECT title, artist_name FROM songs JOIN phrase_song ON (songs.song_id = phrase_song.song_id) WHERE phrase_song.phrase_id IN (SELECT phrase_id FROM phrases WHERE solfege LIKE \'%' + norm + '%\') GROUP BY songs.song_id;';
client.query(sql, function(err, results) {
done();
if (err) {
next(err);
} else {
next(null, results.rows);
}
});
});
});
server.method('getSongsWithSimilarTitle', function(title, next) {
return pg.connect(server.app.DB_URI, function(err, client, done) {
var sql = 'SELECT song_id, title, artist_name FROM songs WHERE title @@ plainto_tsquery(\'' + title + '\');';
client.query(sql, function(err, results) {
done();
if (err) {
next(err);
} else {
next(null, results.rows);
}
});
});
});
server.method('addSongWithPhrase', function(options, next) {
if (!options.title || !options.artist_name || !options.solfege) {
return next(new Error('Missing required title, artist_name, or solfege'));
}
options.solfege = utils.normalize(options.solfege);
return pg.connect(server.app.DB_URI, function(err, client, done) {
var sql = 'INSERT INTO songs (title, artist_name) VALUES (\'' + options.title + '\', \'' + options.artist_name + '\'); INSERT INTO phrases (solfege) VALUES (\'' + options.solfege + '\'); INSERT INTO phrase_song (song_id, phrase_id) VALUES ((SELECT CURRVAL(\'songs_song_id_seq\')), (SELECT CURRVAL(\'phrases_phrase_id_seq\')));';
client.query(sql, function(err, results) {
done();
if (err) {
next(err);
} else {
next(null);
}
});
});
});
server.method('addPhraseToSong', function(options, next) {
if (!options.song_id || !options.phrase) {
return next(new Error('Missing required song_id or phrase'));
}
var solfege = utils.normalize(options.phrase);
return pg.connect(server.app.DB_URI, function(err, client, done) {
var sql = 'INSERT INTO phrases (solfege) VALUES (\'' + solfege + '\'); INSERT INTO phrase_song (song_id, phrase_id) VALUES (' + options.song_id + ', (SELECT phrase_id FROM phrases WHERE solfege=\'' + solfege + '\'));';
client.query(sql, function(err, results) {
done();
if (err) {
next(new Error('Error adding phrase to song'));
} else {
next(null);
}
});
});
});
// search results
server.route({
method: 'GET',
path: '/search',
handler: function(request, reply) {
var q = request.query.q;
server.methods.search(request.query.q, function(err, results) {
if (err) {
reply('Error processing query: ' + err);
} else {
reply.view('search_results', {
original_query: q,
normalized_query: utils.normalize(q),
denormalized_query: utils.denormalize(utils.normalize(q)),
results: results
});
}
});
}
});
// submit a song
server.route({
method: 'GET',
path: '/submit_song',
handler: function(request, reply) {
server.methods.getSongsWithSimilarTitle(request.query.title, function(err, songs) {
if (err) {
console.error(err)
reply('Error');
} else {
if (songs.length > 0 && request.query.new != 1) {
reply.view('submit_song_picklist', { phrase: request.query.phrase, songs: songs });
} else {
reply.view('submit_song_new', {
title: request.query.title,
phrase: request.query.phrase
});
}
}
});
}
});
server.route({
method: 'POST',
path: '/submit_song',
handler: function(request, reply) {
server.methods.addSongWithPhrase({
title: request.payload.title,
artist_name: request.payload.artist,
solfege: request.payload.phrase
}, function(err) {
if (err) {
console.log(err);
reply('Error processing request');
} else {
reply.redirect('/thanks.html');
}
});
}
});
server.route({
method: 'GET',
path: '/add_phrase',
handler: function(request, reply) {
server.methods.addPhraseToSong({
song_id: request.query.id,
phrase: request.query.phrase
}, function(err) {
if (err) {
console.error(err);
reply('Error processing request');
} else {
reply.redirect('/thanks.html');
}
});
}
});
// serve static files
server.route({
method: 'GET',
path: '/{filename*}',
handler: {
directory: {
path: path.join(__dirname, 'assets')
}
}
});
if (!module.parent) {
server.start(function() {
console.log('Server running!');
});
}
module.exports = server;
|
