# all files / red/ red.js

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     /**
     * 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 fs = require("fs");
    var path = require('path');

    var runtime = require("./runtime");
    var api = require("./api");

    process.env.NODE_RED_HOME = process.env.NODE_RED_HOME || path.resolve(__dirname+"/..");

    var nodeApp = null;
    var adminApp = null;
    var server = null;
    var apiEnabled = false;

    function checkVersion(userSettings) {
        var semver = require('semver');
        Iif (!semver.satisfies(process.version,">=4.0.0")) {
            // TODO: in the future, make this a hard error.
            // var e = new Error("Unsupported version of node.js");
            // e.code = "unsupported_version";
            // throw e;
            userSettings.UNSUPPORTED_VERSION = process.version;
        }
    }

    function checkBuild() {
        var editorFile = path.resolve(path.join(__dirname,"..","public","red","red.min.js"));
        try {
            var stats = fs.statSync(editorFile);
        } catch(err) {
            var e = new Error("Node-RED not built");
            e.code = "not_built";
            throw e;
        }
    }

    module.exports = {
        init: function(httpServer,userSettings) {
            Iif (!userSettings) {
                userSettings = httpServer;
                httpServer = null;
            }

            Eif (!userSettings.SKIP_BUILD_CHECK) {
                checkVersion(userSettings);
                checkBuild();
            }

            Eif (!userSettings.coreNodesDir) {
                userSettings.coreNodesDir = path.resolve(path.join(__dirname,"..","nodes"));
            }

            Eif (userSettings.httpAdminRoot !== false) {
                runtime.init(userSettings,api);
                api.init(httpServer,runtime);
                apiEnabled = true;
            } else {
                runtime.init(userSettings);
                apiEnabled = false;
            }
            adminApp = runtime.adminApi.adminApp;
            nodeApp = runtime.nodeApp;
            server = runtime.adminApi.server;
            return;
        },
        start: function() {
            return runtime.start().then(function() {
                if (apiEnabled) {
                    return api.start();
                }
            });
        },
        stop: function() {
            return runtime.stop().then(function() {
                if (apiEnabled) {
                    return api.stop();
                }
            })
        },
        nodes: runtime.nodes,
        log: runtime.log,
        settings:runtime.settings,
        util: runtime.util,
        version: runtime.version,

        comms: api.comms,
        library: api.library,
        auth: api.auth,

        get app() { console.log("Deprecated use of RED.app - use RED.httpAdmin instead"); return runtime.app },
        get httpAdmin() { return adminApp },
        get httpNode() { return nodeApp },
        get server() { return server }
    };