/**
    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 fs = require('fs');
var path = require('path');
var properties_parser = require('properties-parser');
var AndroidManifest = require('./AndroidManifest');
var AndroidStudio = require('./AndroidStudio');
var pluginHandlers = require('./pluginHandlers');

var projectFileCache = {};

function addToPropertyList (projectProperties, key, value) {
    var i = 1;
    while (projectProperties.get(key + '.' + i)) { i++; }

    projectProperties.set(key + '.' + i, value);
    projectProperties.dirty = true;
}

function removeFromPropertyList (projectProperties, key, value) {
    var i = 1;
    var currentValue;
    while ((currentValue = projectProperties.get(key + '.' + i))) {
        if (currentValue === value) {
            while ((currentValue = projectProperties.get(key + '.' + (i + 1)))) {
                projectProperties.set(key + '.' + i, currentValue);
                i++;
            }
            projectProperties.set(key + '.' + i);
            break;
        }
        i++;
    }
    projectProperties.dirty = true;
}

function getRelativeLibraryPath (parentDir, subDir) {
    var libraryPath = path.relative(parentDir, subDir);
    return (path.sep === '\\') ? libraryPath.replace(/\\/g, '/') : libraryPath;
}

function AndroidProject (projectDir) {
    this._propertiesEditors = {};
    this._subProjectDirs = {};
    this._dirty = false;
    this.projectDir = projectDir;
    this.platformWww = path.join(this.projectDir, 'platform_www');
    this.www = path.join(this.projectDir, 'assets/www');
    if (AndroidStudio.isAndroidStudioProject(projectDir) === true) {
        this.www = path.join(this.projectDir, 'app/src/main/assets/www');
    }
}

AndroidProject.getProjectFile = function (projectDir) {
    if (!projectFileCache[projectDir]) {
        projectFileCache[projectDir] = new AndroidProject(projectDir);
    }

    return projectFileCache[projectDir];
};

AndroidProject.purgeCache = function (projectDir) {
    if (projectDir) {
        delete projectFileCache[projectDir];
    } else {
        projectFileCache = {};
    }
};

/**
 * Reads the package name out of the Android Manifest file
 *
 * @param   {String}  projectDir  The absolute path to the directory containing the project
 *
 * @return  {String}              The name of the package
 */
AndroidProject.prototype.getPackageName = function () {
    var manifestPath = path.join(this.projectDir, 'AndroidManifest.xml');
    if (AndroidStudio.isAndroidStudioProject(this.projectDir) === true) {
        manifestPath = path.join(this.projectDir, 'app/src/main/AndroidManifest.xml');
    }
    return new AndroidManifest(manifestPath).getPackageId();
};

AndroidProject.prototype.getCustomSubprojectRelativeDir = function (plugin_id, src) {
    // All custom subprojects are prefixed with the last portion of the package id.
    // This is to avoid collisions when opening multiple projects in Eclipse that have subprojects with the same name.
    var packageName = this.getPackageName();
    var lastDotIndex = packageName.lastIndexOf('.');
    var prefix = packageName.substring(lastDotIndex + 1);
    var subRelativeDir = path.join(plugin_id, prefix + '-' + path.basename(src));
    return subRelativeDir;
};

AndroidProject.prototype.addSubProject = function (parentDir, subDir) {
    var parentProjectFile = path.resolve(parentDir, 'project.properties');
    var subProjectFile = path.resolve(subDir, 'project.properties');
    var parentProperties = this._getPropertiesFile(parentProjectFile);
    // TODO: Setting the target needs to happen only for pre-3.7.0 projects
    if (fs.existsSync(subProjectFile)) {
        var subProperties = this._getPropertiesFile(subProjectFile);
        subProperties.set('target', parentProperties.get('target'));
        subProperties.dirty = true;
        this._subProjectDirs[subDir] = true;
    }
    addToPropertyList(parentProperties, 'android.library.reference', getRelativeLibraryPath(parentDir, subDir));

    this._dirty = true;
};

AndroidProject.prototype.removeSubProject = function (parentDir, subDir) {
    var parentProjectFile = path.resolve(parentDir, 'project.properties');
    var parentProperties = this._getPropertiesFile(parentProjectFile);
    removeFromPropertyList(parentProperties, 'android.library.reference', getRelativeLibraryPath(parentDir, subDir));
    delete this._subProjectDirs[subDir];
    this._dirty = true;
};

AndroidProject.prototype.addGradleReference = function (parentDir, subDir) {
    var parentProjectFile = path.resolve(parentDir, 'project.properties');
    var parentProperties = this._getPropertiesFile(parentProjectFile);
    addToPropertyList(parentProperties, 'cordova.gradle.include', getRelativeLibraryPath(parentDir, subDir));
    this._dirty = true;
};

AndroidProject.prototype.removeGradleReference = function (parentDir, subDir) {
    var parentProjectFile = path.resolve(parentDir, 'project.properties');
    var parentProperties = this._getPropertiesFile(parentProjectFile);
    removeFromPropertyList(parentProperties, 'cordova.gradle.include', getRelativeLibraryPath(parentDir, subDir));
    this._dirty = true;
};

AndroidProject.prototype.addSystemLibrary = function (parentDir, value) {
    var parentProjectFile = path.resolve(parentDir, 'project.properties');
    var parentProperties = this._getPropertiesFile(parentProjectFile);
    addToPropertyList(parentProperties, 'cordova.system.library', value);
    this._dirty = true;
};

AndroidProject.prototype.removeSystemLibrary = function (parentDir, value) {
    var parentProjectFile = path.resolve(parentDir, 'project.properties');
    var parentProperties = this._getPropertiesFile(parentProjectFile);
    removeFromPropertyList(parentProperties, 'cordova.system.library', value);
    this._dirty = true;
};

AndroidProject.prototype.write = function () {
    if (!this._dirty) {
        return;
    }
    this._dirty = false;

    for (var filename in this._propertiesEditors) {
        var editor = this._propertiesEditors[filename];
        if (editor.dirty) {
            fs.writeFileSync(filename, editor.toString());
            editor.dirty = false;
        }
    }
};

AndroidProject.prototype._getPropertiesFile = function (filename) {
    if (!this._propertiesEditors[filename]) {
        if (fs.existsSync(filename)) {
            this._propertiesEditors[filename] = properties_parser.createEditor(filename);
        } else {
            this._propertiesEditors[filename] = properties_parser.createEditor();
        }
    }

    return this._propertiesEditors[filename];
};

AndroidProject.prototype.getInstaller = function (type) {
    return pluginHandlers.getInstaller(type);
};

AndroidProject.prototype.getUninstaller = function (type) {
    return pluginHandlers.getUninstaller(type);
};

/*
 * This checks if an Android project is clean or has old build artifacts
 */

AndroidProject.prototype.isClean = function () {
    var build_path = path.join(this.projectDir, 'build');
    // If the build directory doesn't exist, it's clean
    return !(fs.existsSync(build_path));
};

module.exports = AndroidProject;
