Add sqlite3 library backend

Vagrantfile

@@ -17,7 +17,7 @@ Vagrant.configure("2") do |config|
 
   config.vm.provision "shell", inline: "sudo apt-get update -y"
   config.vm.provision "shell", inline: "sudo apt-get upgrade -y"
-  config.vm.provision "shell", inline: "sudo apt-get install -y make nodejs npm"
+  config.vm.provision "shell", inline: "sudo apt-get install -y make nodejs npm sqlite3"
 end
 
 # vim:set ts=2 sw=2 et:

create.sql

@@ -0,0 +1 @@
+CREATE TABLE tags(uuid TEXT PRIMARY KEY, tag TEXT);

jukebox/library/sqlite-backend.js

@@ -0,0 +1,27 @@
+"use strict";
+
+const sqlite3 = require('sqlite3');
+
+class SqliteBackend {
+  constructor(config) {
+    this.config = config;
+    sqlite3.verbose();
+    this.db = new sqlite3.Database(this.config.db, sqlite3.OPEN_READONLY);
+    console.log(this.db);
+  }
+
+  find(tag, callback) {
+    this.db.get("SELECT uuid FROM tags WHERE tag = ? AND _ROWID_ >= (abs(random()) % (SELECT max(_ROWID_) FROM tags)) LIMIT 1", tag, (err, row) => {
+      if (typeof row === 'undefined') {
+        return callback();
+      }
+      callback(row['uuid']);
+    });
+  }
+}
+
+module.exports = function(config) {
+  return new SqliteBackend(config);
+};
+
+// vim:ts=2 sw=2 et:

package.json

@@ -20,8 +20,10 @@
     "glob": "^7.1.6",
     "morgan": "^1.7.0",
     "mustache": "^3.1.0",
+    "sqlite": "^3.0.3",
     "throttle-debounce": "^2.1.0",
     "utf-8-validate": "^5.0.2",
+    "uuid": "^3.3.3",
     "winston": "^3.2.1",
     "ws": "^7.2.1"
   },

player.js

@@ -5,8 +5,8 @@ const config = require('./config.json')
 const views = require('./jukebox/views')(__dirname + '/templates/');
 const library = require('./jukebox/library');
 
-const MediaLibraryFileBackend = require('./jukebox/library/file-backend')(config);
-const MediaLibrary = new library.Library(config, MediaLibraryFileBackend);
+const MediaLibrarySqliteBackend = require('./jukebox/library/sqlite-backend')(config);
+const MediaLibrary = new library.Library(config, MediaLibrarySqliteBackend);
 
 const ScriptRunner = require('./jukebox/scripts')(config);