/**
 * Copyright JS Foundation and other contributors, http://js.foundation
 *
 * Licensed under the Apache License, Version 2.0 (the "License");
 * you may not use this file except in compliance with the License.
 * You may obtain a copy of the License at
 *
 * http://www.apache.org/licenses/LICENSE-2.0
 *
 * Unless required by applicable law or agreed to in writing, software
 * distributed under the License is distributed on an "AS IS" BASIS,
 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
 * See the License for the specific language governing permissions and
 * limitations under the License.
 **/
var runtimeAPI;
var settings;
var theme = require("../editor/theme");
var clone = require("clone");

var i18n = require("@node-red/util").i18n

function extend(target, source) {
    var keys = Object.keys(source);
    var i = keys.length;
    while(i--) {
        var value = source[keys[i]]
        var type = typeof value;
        if (type === 'string' || type === 'number' || type === 'boolean' || Array.isArray(value)) {
            target[keys[i]] = value;
        } else if (value === null) {
            if (target.hasOwnProperty(keys[i])) {
                delete target[keys[i]];
            }
        } else {
            // Object
            if (target.hasOwnProperty(keys[i])) {
                target[keys[i]] = extend(target[keys[i]],value);
            } else {
                target[keys[i]] = value;
            }
        }
    }
    return target;
}

module.exports = {
    init: function(_settings,_runtimeAPI) {
        runtimeAPI = _runtimeAPI;
        settings = _settings;
    },
    runtimeSettings: function(req,res) {
        var opts = {
            user: req.user
        }
        runtimeAPI.settings.getRuntimeSettings(opts).then(function(result) {
            if (!settings.disableEditor) {
                result.editorTheme = result.editorTheme||{};
                var themeSettings = theme.settings();
                if (themeSettings) {
                    // result.editorTheme may already exist with the palette
                    // disabled. Need to merge that into the receive settings
                    result.editorTheme = extend(clone(themeSettings),result.editorTheme);
                }
                result.editorTheme.languages = i18n.availableLanguages("editor");
            }
            res.json(result);
        });
    },

}
