Bring back settingsdb.js

config.js is now meant for instance level data ie data for specific
cloudron instance. The sqlite database is meant for data that is
needed across restores.

src/settingsdb.js

@@ -0,0 +1,53 @@
+/* jslint node:true */
+
+'use strict';
+
+var DatabaseError = require('./databaseerror'),
+    debug = require('debug')('box:settingsdb'),
+    assert = require('assert'),
+    database = require('./database.js');
+
+exports = module.exports = {
+    get: get,
+    getAll: getAll,
+    set: set,
+
+    NAKED_DOMAIN_KEY: 'naked_domain'
+};
+
+function get(key, callback) {
+    assert(typeof key === 'string');
+    assert(typeof callback === 'function');
+
+    database.get('SELECT * FROM settings WHERE key = ?', [ key ], function (error, result) {
+        if (error) return callback(new DatabaseError(error, DatabaseError.INTERNAL_ERROR));
+
+        if (typeof result === 'undefined') return callback(new DatabaseError(null, DatabaseError.NOT_FOUND));
+
+        callback(null, result.value);
+    });
+}
+
+function getAll(callback) {
+    database.all('SELECT * FROM settings', function (error, result) {
+        if (error) return callback(new DatabaseError(error, DatabaseError.INTERNAL_ERROR));
+
+        if (typeof result === 'undefined') result = [ ];
+
+        callback(null, result);
+    });
+}
+
+function set(key, value, callback) {
+    assert(typeof key === 'string');
+    assert(value === null || typeof value === 'string');
+    assert(typeof callback === 'function');
+
+    // sqlite does not have upsert
+    database.run('INSERT OR REPLACE INTO settings (key, value) VALUES (?, ?)', [ key, value ], function (error) {
+        if (error || this.changes !== 1) return callback(new DatabaseError(error, DatabaseError.INTERNAL_ERROR));
+
+        callback(null);
+    });
+}
+

src/test/database-test.js

@@ -11,6 +11,7 @@ var database = require('../database'),
     tokendb = require('../tokendb.js'),
     clientdb = require('../clientdb.js'),
     authcodedb = require('../authcodedb.js'),
+    settingsdb = require('../settingsdb.js'),
     appdb = require('../appdb.js'),
     expect = require('expect.js'),
     mkdirp = require('mkdirp'),
@@ -598,5 +599,43 @@ describe('database', function () {
             });
         });
     });
+
+    describe('settings', function () {
+        it('can set value', function (done) {
+            settingsdb.set('somekey', 'somevalue', function (error) {
+                expect(error).to.be(null);
+                done();
+            });
+        });
+        it('can get the set value', function (done) {
+            settingsdb.get('somekey', function (error, value) {
+                expect(error).to.be(null);
+                expect(value).to.be('somevalue');
+                done();
+            });
+        });
+        it('can get all values', function (done) {
+            settingsdb.getAll(function (error, result) {
+                expect(error).to.be(null);
+                expect(result).to.be.an(Array);
+                expect(result[0]).to.eql({ key: 'somekey', value: 'somevalue' });
+                done();
+            });
+        });
+        it('can update a value', function (done) {
+            settingsdb.set('somekey', 'someothervalue', function (error) {
+                expect(error).to.be(null);
+                done();
+            });
+        });
+        it('can get updated value', function (done) {
+            settingsdb.get('somekey', function (error, value) {
+                expect(error).to.be(null);
+                expect(value).to.be('someothervalue');
+                done();
+            });
+        });
+
+    });
 });