#!/usr/bin/env node

/*
       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 shell = require('shelljs'),
    child_process = require('child_process'),
    Q     = require('q'),
    path  = require('path'),
    fs    = require('fs'),
    check_reqs = require('./check_reqs'),
    ROOT    = path.join(__dirname, '..', '..');

// Returns a promise.
function exec(command, opt_cwd) {
    var d = Q.defer();
    console.log('Running: ' + command);
    child_process.exec(command, { cwd: opt_cwd }, function(err, stdout, stderr) {
        stdout && console.log(stdout);
        stderr && console.error(stderr);
        if (err) d.reject(err);
        else d.resolve(stdout);
    });
    return d.promise;
}

function setShellFatal(value, func) {
    var oldVal = shell.config.fatal;
    shell.config.fatal = value;
    func();
    shell.config.fatal = oldVal;
}

function getFrameworkDir(projectPath, shared) {
    return shared ? path.join(ROOT, 'framework') : path.join(projectPath, 'CordovaLib');
}

function copyJsAndLibrary(projectPath, shared, projectName) {
    var nestedCordovaLibPath = getFrameworkDir(projectPath, false);
    shell.cp('-f', path.join(ROOT, 'framework', 'assets', 'www', 'cordova.js'), path.join(projectPath, 'assets', 'www', 'cordova.js'));
    // Don't fail if there are no old jars.
    setShellFatal(false, function() {
        shell.ls(path.join(projectPath, 'libs', 'cordova-*.jar')).forEach(function(oldJar) {
            console.log("Deleting " + oldJar);
            shell.rm('-f', oldJar);
        });
        // Delete old library project if it existed.
        if (shared) {
            shell.rm('-rf', nestedCordovaLibPath);
        } else {
            // Delete only the src, since eclipse can't handle its .project file being deleted.
            shell.rm('-rf', path.join(nestedCordovaLibPath, 'src'));
        }
    });
    if (!shared) {
        shell.mkdir('-p', nestedCordovaLibPath);
        shell.cp('-f', path.join(ROOT, 'framework', 'AndroidManifest.xml'), nestedCordovaLibPath);
        shell.cp('-f', path.join(ROOT, 'framework', 'project.properties'), nestedCordovaLibPath);
        shell.cp('-r', path.join(ROOT, 'framework', 'src'), nestedCordovaLibPath);
        // Create an eclipse project file and set the name of it to something unique.
        // Without this, you can't import multiple CordovaLib projects into the same workspace.
        var eclipseProjectFilePath = path.join(nestedCordovaLibPath, '.project');
        if (!fs.existsSync(eclipseProjectFilePath)) {
            var data = '<?xml version="1.0" encoding="UTF-8"?><projectDescription><name>' + projectName + '-' + 'CordovaLib</name></projectDescription>';
            fs.writeFileSync(eclipseProjectFilePath, data, 'utf8');
        }
    }
}

function runAndroidUpdate(projectPath, target_api, shared) {
    var targetFrameworkDir = getFrameworkDir(projectPath, shared);
    return exec('android update project --subprojects --path "' + projectPath + '" --target ' + target_api + ' --library "' + path.relative(projectPath, targetFrameworkDir) + '"');
}

function copyScripts(projectPath) {
    var srcScriptsDir = path.join(ROOT, 'bin', 'templates', 'cordova');
    var destScriptsDir = path.join(projectPath, 'cordova');
    // Delete old scripts directory if this is an update.
    shell.rm('-rf', destScriptsDir);
    // Copy in the new ones.
    shell.cp('-r', srcScriptsDir, projectPath);
    shell.cp('-r', path.join(ROOT, 'bin', 'node_modules'), destScriptsDir);
    shell.cp(path.join(ROOT, 'bin', 'check_reqs'), path.join(destScriptsDir, 'check_reqs'));
    shell.cp(path.join(ROOT, 'bin', 'lib', 'check_reqs.js'), path.join(projectPath, 'cordova', 'lib', 'check_reqs.js'));
    shell.cp(path.join(ROOT, 'bin', 'android_sdk_version'), path.join(destScriptsDir, 'android_sdk_version'));
    shell.cp(path.join(ROOT, 'bin', 'lib', 'android_sdk_version.js'), path.join(projectPath, 'cordova', 'lib', 'android_sdk_version.js'));
}

/**
 * $ create [options]
 *
 * Creates an android application with the given options.
 *
 * Options:
 *
 *   - `project_path` 	{String} Path to the new Cordova android project.
 *   - `package_name`{String} Package name, following reverse-domain style convention.
 *   - `project_name` 	{String} Project name.
 *   - 'project_template_dir' {String} Path to project template (override).
 *
 * Returns a promise.
 */

exports.createProject = function(project_path, package_name, project_name, project_template_dir, use_shared_project) {
    var VERSION = fs.readFileSync(path.join(ROOT, 'VERSION'), 'utf-8').trim();

    // Set default values for path, package and name
    project_path = typeof project_path !== 'undefined' ? project_path : "CordovaExample";
    project_path = path.relative(process.cwd(), project_path);
    package_name = typeof package_name !== 'undefined' ? package_name : 'my.cordova.project';
    project_name = typeof project_name !== 'undefined' ? project_name : 'CordovaExample';
    project_template_dir = typeof project_template_dir !== 'undefined' ? 
                           project_template_dir : 
                           path.join(ROOT, 'bin', 'templates', 'project');

    var safe_activity_name = project_name.replace(/\W/g, '');
    var package_as_path = package_name.replace(/\./g, path.sep);
    var activity_dir    = path.join(project_path, 'src', package_as_path);
    var activity_path   = path.join(activity_dir, safe_activity_name + '.java');
    var target_api      = check_reqs.get_target();
    var manifest_path   = path.join(project_path, 'AndroidManifest.xml');

    // Check if project already exists
    if(fs.existsSync(project_path)) {
        return Q.reject('Project already exists! Delete and recreate');
    }

    if (!/[a-zA-Z0-9_]+\.[a-zA-Z0-9_](.[a-zA-Z0-9_])*/.test(package_name)) {
        return Q.reject('Package name must look like: com.company.Name');
    }

    // Check that requirements are met and proper targets are installed
    return check_reqs.run()
    .then(function() {
        // Log the given values for the project
        console.log('Creating Cordova project for the Android platform:');
        console.log('\tPath: ' + project_path);
        console.log('\tPackage: ' + package_name);
        console.log('\tName: ' + project_name);
        console.log('\tAndroid target: ' + target_api);

        console.log('Copying template files...');

        setShellFatal(true, function() {
            // copy project template
            shell.cp('-r', path.join(project_template_dir, 'assets'), project_path);
            shell.cp('-r', path.join(project_template_dir, 'res'), project_path);
            // Manually create directories that would be empty within the template (since git doesn't track directories).
            shell.mkdir(path.join(project_path, 'libs'));

            // copy cordova.js, cordova.jar and res/xml
            shell.cp('-r', path.join(ROOT, 'framework', 'res', 'xml'), path.join(project_path, 'res'));
            copyJsAndLibrary(project_path, use_shared_project, safe_activity_name);

            // interpolate the activity name and package
            shell.mkdir('-p', activity_dir);
            shell.cp('-f', path.join(project_template_dir, 'Activity.java'), activity_path);
            shell.sed('-i', /__ACTIVITY__/, safe_activity_name, activity_path);
            shell.sed('-i', /__NAME__/, project_name, path.join(project_path, 'res', 'values', 'strings.xml'));
            shell.sed('-i', /__ID__/, package_name, activity_path);

            shell.cp('-f', path.join(project_template_dir, 'AndroidManifest.xml'), manifest_path);
            shell.sed('-i', /__ACTIVITY__/, safe_activity_name, manifest_path);
            shell.sed('-i', /__PACKAGE__/, package_name, manifest_path);
            shell.sed('-i', /__APILEVEL__/, target_api.split('-')[1], manifest_path);
            copyScripts(project_path);
        });
        // Link it to local android install.
        return runAndroidUpdate(project_path, target_api, use_shared_project);
    }).then(function() {
        console.log('Project successfully created.');
    });
}

// Returns a promise.
exports.updateProject = function(projectPath) {
    var version = fs.readFileSync(path.join(ROOT, 'VERSION'), 'utf-8').trim();
    // Check that requirements are met and proper targets are installed
    return check_reqs.run()
    .then(function() {
        var target_api = check_reqs.get_target();
        copyJsAndLibrary(projectPath, false, null);
        copyScripts(projectPath);
        return runAndroidUpdate(projectPath, target_api, false)
        .then(function() {
            console.log('Android project is now at version ' + version);
        });
    });
};