/**
    Licensed to the Apache Software Foundation (ASF) under one
    or more contributor license agreements.  See the NOTICE file
    distributed with this work for additional information
    regarding copyright ownership.  The ASF licenses this file
    to you 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 cordova_util      = require('./util'),
    path              = require('path'),
    config_parser     = require('./config_parser'),
    platforms         = require('../platforms'),
    platform          = require('./platform'),
    fs                = require('fs'),
    shell             = require('shelljs'),
    et                = require('elementtree'),
    hooker            = require('./hooker'),
    events            = require('./events'),
    n                 = require('ncallbacks'),
    prompt            = require('prompt'),
    plugman           = require('plugman'),
    util              = require('util');

module.exports = function prepare(platformList, callback) {
    var projectRoot = cordova_util.isCordova(process.cwd());

    if (!projectRoot) {
        var err = new Error('Current working directory is not a Cordova-based project.');
        if (callback) callback(err);
        else throw err;
        return;
    }

    var xml = cordova_util.projectConfig(projectRoot);
    var cfg = new config_parser(xml);

    if (arguments.length === 0 || (platformList instanceof Array && platformList.length === 0)) {
        platformList = cordova_util.listPlatforms(projectRoot);
    } else if (typeof platformList == 'string') platformList = [platformList];
    else if (platformList instanceof Function && callback === undefined) {
        callback = platformList;
        platformList = cordova_util.listPlatforms(projectRoot);
    }

    if (platformList.length === 0) {
        var err = new Error('No platforms added to this project. Please use `cordova platform add <platform>`.');
        if (callback) callback(err);
        else throw err;
        return;
    }

    var hooks = new hooker(projectRoot);
    hooks.fire('before_prepare', function(err) {
        if (err) {
            if (callback) callback(err);
            else throw err;
        } else {
            var end = n(platformList.length, function() {
                hooks.fire('after_prepare', function(err) {
                    if (err) {
                        if (callback) callback(err);
                        else throw err;
                    } else {
                        if (callback) callback();
                    }
                });
            });

            // Iterate over each added platform
            platformList.forEach(function(platform) {
                var platformPath = path.join(projectRoot, 'platforms', platform);
                var parser = new platforms[platform].parser(platformPath);
                parser.update_project(cfg, function() {
                    // Call plugman --prepare for this platform. sets up js-modules appropriately.
                    var plugins_dir = path.join(projectRoot, 'plugins');
                    events.emit('log', 'Calling plugman.prepare for platform "' + platform + '"');
                    plugman.prepare(platformPath, (platform=='blackberry'?'blackberry10':platform), plugins_dir);
                    // Make sure that config changes for each existing plugin is in place
                    var plugins = cordova_util.findPlugins(plugins_dir);
                    var platform_json = plugman.config_changes.get_platform_json(plugins_dir, (platform=='blackberry'?'blackberry10':platform));
                    plugins && plugins.forEach(function(plugin_id) {
                        if (platform_json.installed_plugins[plugin_id]) {
                            events.emit('log', 'Ensuring plugin "' + plugin_id + '" is installed correctly...');
                            plugman.config_changes.add_plugin_changes((platform=='blackberry'?'blackberry10':platform), platformPath, plugins_dir, plugin_id, /* variables for plugin */ platform_json.installed_plugins[plugin_id], /* top level plugin? */ true, /* should increment config munge? cordova-cli never should, only plugman */ false);
                        } else if (platform_json.dependent_plugins[plugin_id]) {
                            events.emit('log', 'Ensuring plugin "' + plugin_id + '" is installed correctly...');
                            plugman.config_changes.add_plugin_changes((platform=='blackberry'?'blackberry10':platform), platformPath, plugins_dir, plugin_id, /* variables for plugin */ platform_json.dependent_plugins[plugin_id], /* top level plugin? */ false, /* should increment config munge? cordova-cli never should, only plugman */ false);
                        }
                        events.emit('log', 'Plugin "' + plugin_id + '" is good to go.');
                    });
                    end();
                });
            });
        }
    });
};