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// require built-in modules
var fs = require('fs');
var path = require('path');
// require external libs
var Hapi = require('hapi');
// 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.views({
engines: {
html: require('handlebars')
},
path: path.join(__dirname, 'templates')
});
server.register({
register: require('hapi-postgres'),
options: {
uri: process.env.DATABASE_URL || 'postgres://postgres:postgres@127.0.0.1/solfege'
}
}, function(err) {
if (err) {
console.error('Failed to load hapi-postgres', err);
}
});
server.method('search', function(query, next) {
var client = server.plugins['hapi-postgres'].client;
var done = server.plugins['hapi-postgres'].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;';
return client.query(sql, function(err, results) {
done();
if (err) {
next(err);
} else {
next(null, results.rows);
}
});
});
server.method('getSongsWithSimilarTitle', function(title, next) {
var client = server.plugins['hapi-postgres'].client;
var done = server.plugins['hapi-postgres'].done;
var sql = 'SELECT song_id, title, artist_name FROM songs WHERE title @@ plainto_tsquery(\'' + title + '\');';
return client.query(sql, function(err, results) {
done();
if (err) {
next(err);
} else {
next(null, results.rows);
}
});
});
server.method('addSongWithPhrase', function(options, next) {
var client = server.plugins['hapi-postgres'].client;
var done = server.plugins['hapi-postgres'].done;
if (!options.title || !options.artist_name || !options.solfege) {
done();
return next(new Error('Missing required title, artist_name, or solfege'));
}
options.solfege = utils.normalize(options.solfege);
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\')));';
return client.query(sql, function(err, results) {
done();
if (err) {
next(err);
} else {
next(null);
}
});
});
server.method('addPhraseToSong', function(options, next) {
var client = server.plugins['hapi-postgres'].client;
var done = server.plugins['hapi-postgres'].done;
if (!options.song_id || !options.phrase) {
done();
return next(new Error('Missing required song_id or phrase'));
} else {
var solfege = utils.normalize(options.phrase);
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 + '\'));';
return 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')
}
}
});
server.start(function() {
console.log('Server running!');
});
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