/*
 * Copyright (c) 2013-2015 by appPlant UG. All rights reserved.
 *
 * @APPPLANT_LICENSE_HEADER_START@
 *
 * This file contains Original Code and/or Modifications of Original Code
 * as defined in and that are subject to the Apache License
 * Version 2.0 (the 'License'). You may not use this file except in
 * compliance with the License. Please obtain a copy of the License at
 * http://opensource.org/licenses/Apache-2.0/ and read it before using this
 * file.
 *
 * The Original Code and all software distributed under the License are
 * distributed on an 'AS IS' basis, WITHOUT WARRANTY OF ANY KIND, EITHER
 * EXPRESS OR IMPLIED, AND APPLE HEREBY DISCLAIMS ALL SUCH WARRANTIES,
 * INCLUDING WITHOUT LIMITATION, ANY WARRANTIES OF MERCHANTABILITY,
 * FITNESS FOR A PARTICULAR PURPOSE, QUIET ENJOYMENT OR NON-INFRINGEMENT.
 * Please see the License for the specific language governing rights and
 * limitations under the License.
 *
 * @APPPLANT_LICENSE_HEADER_END@
 */

var exec = require('cordova/exec');


/********
 * CORE *
 ********/

/**
 * Returns the default settings.
 *
 * @return {Object}
 */
exports.getDefaults = function () {
    return this._defaults;
};

/**
 * Overwrite default settings.
 *
 * @param {Object} defaults
 */
exports.setDefaults = function (newDefaults) {
    var defaults = this.getDefaults();

    for (var key in defaults) {
        if (newDefaults.hasOwnProperty(key)) {
            defaults[key] = newDefaults[key];
        }
    }
};

/**
 * Schedule a new local notification.
 *
 * @param {Object} msgs
 *      The notification properties
 * @param {Function} callback
 *      A function to be called after the notification has been canceled
 * @param {Object?} scope
 *      The scope for the callback function
 * @param {Object?} args
 *      skipPermission:true schedules the notifications immediatly without
 *                          registering or checking for permission
 */
exports.schedule = function (msgs, callback, scope, args) {
    var fn = function(granted) {

        if (!granted) return;

        var notifications = Array.isArray(msgs) ? msgs : [msgs];

        for (var i = 0; i < notifications.length; i++) {
            var notification = notifications[i];

            this.mergeWithDefaults(notification);
            this.convertProperties(notification);
        }

        this.exec('schedule', notifications, callback, scope);
    };

    if (args && args.skipPermission) {
        fn.call(this, true);
    } else {
        this.registerPermission(fn, this);
    }
};

/**
 * Update existing notifications specified by IDs in options.
 *
 * @param {Object} notifications
 *      The notification properties to update
 * @param {Function} callback
 *      A function to be called after the notification has been updated
 * @param {Object?} scope
 *      The scope for the callback function
 * @param {Object?} args
 *      skipPermission:true schedules the notifications immediatly without
 *                          registering or checking for permission
 */
exports.update = function (msgs, callback, scope, args) {
    var fn = function(granted) {

        if (!granted) return;

        var notifications = Array.isArray(msgs) ? msgs : [msgs];

        for (var i = 0; i < notifications.length; i++) {
            var notification = notifications[i];

            this.convertProperties(notification);
        }

        this.exec('update', notifications, callback, scope);
    };

    if (args && args.skipPermission) {
        fn.call(this, true);
    } else {
        this.registerPermission(fn, this);
    }
};

/**
 * Clear the specified notification.
 *
 * @param {String} id
 *      The ID of the notification
 * @param {Function} callback
 *      A function to be called after the notification has been cleared
 * @param {Object?} scope
 *      The scope for the callback function
 */
exports.clear = function (ids, callback, scope) {
    ids = Array.isArray(ids) ? ids : [ids];
    ids = this.convertIds(ids);

    this.exec('clear', ids, callback, scope);
};

/**
 * Clear all previously sheduled notifications.
 *
 * @param {Function} callback
 *      A function to be called after all notifications have been cleared
 * @param {Object?} scope
 *      The scope for the callback function
 */
exports.clearAll = function (callback, scope) {
    this.exec('clearAll', null, callback, scope);
};

/**
 * Cancel the specified notifications.
 *
 * @param {String[]} ids
 *      The IDs of the notifications
 * @param {Function} callback
 *      A function to be called after the notifications has been canceled
 * @param {Object?} scope
 *      The scope for the callback function
 */
exports.cancel = function (ids, callback, scope) {
    ids = Array.isArray(ids) ? ids : [ids];
    ids = this.convertIds(ids);

    this.exec('cancel', ids, callback, scope);
};

/**
 * Remove all previously registered notifications.
 *
 * @param {Function} callback
 *      A function to be called after all notifications have been canceled
 * @param {Object?} scope
 *      The scope for the callback function
 */
exports.cancelAll = function (callback, scope) {
    this.exec('cancelAll', null, callback, scope);
};

/**
 * Check if a notification with an ID is present.
 *
 * @param {String} id
 *      The ID of the notification
 * @param {Function} callback
 *      A callback function to be called with the list
 * @param {Object?} scope
 *      The scope for the callback function
 */
exports.isPresent = function (id, callback, scope) {
    this.exec('isPresent', id || 0, callback, scope);
};

/**
 * Check if a notification with an ID is scheduled.
 *
 * @param {String} id
 *      The ID of the notification
 * @param {Function} callback
 *      A callback function to be called with the list
 * @param {Object?} scope
 *      The scope for the callback function
 */
exports.isScheduled = function (id, callback, scope) {
    this.exec('isScheduled', id || 0, callback, scope);
};

/**
 * Check if a notification with an ID was triggered.
 *
 * @param {String} id
 *      The ID of the notification
 * @param {Function} callback
 *      A callback function to be called with the list
 * @param {Object?} scope
 *      The scope for the callback function
 */
exports.isTriggered = function (id, callback, scope) {
    this.exec('isTriggered', id || 0, callback, scope);
};

/**
 * List all local notification IDs.
 *
 * @param {Function} callback
 *      A callback function to be called with the list
 * @param {Object?} scope
 *      The scope for the callback function
 */
exports.getAllIds = function (callback, scope) {
    this.exec('getAllIds', null, callback, scope);
};

/**
 * Alias for `getAllIds`.
 */
exports.getIds = function () {
    this.getAllIds.apply(this, arguments);
};

/**
 * List all scheduled notification IDs.
 *
 * @param {Function} callback
 *      A callback function to be called with the list
 * @param {Object?} scope
 *      The scope for the callback function
 */
exports.getScheduledIds = function (callback, scope) {
    this.exec('getScheduledIds', null, callback, scope);
};

/**
 * List all triggered notification IDs.
 *
 * @param {Function} callback
 *      A callback function to be called with the list
 * @param {Object?} scope
 *      The scope for the callback function
 */
exports.getTriggeredIds = function (callback, scope) {
    this.exec('getTriggeredIds', null, callback, scope);
};

/**
 * Property list for given local notifications.
 * If called without IDs, all notification will be returned.
 *
 * @param {Number[]?} ids
 *      Set of notification IDs
 * @param {Function} callback
 *      A callback function to be called with the list
 * @param {Object?} scope
 *      The scope for the callback function
 */
exports.get = function () {
    var args = Array.apply(null, arguments);

    if (typeof args[0] == 'function') {
        args.unshift([]);
    }

    var ids      = args[0],
        callback = args[1],
        scope    = args[2];

    if (!Array.isArray(ids)) {
        this.exec('getSingle', Number(ids), callback, scope);
        return;
    }

    ids = this.convertIds(ids);

    this.exec('getAll', ids, callback, scope);
};

/**
 * Property list for all local notifications.
 *
 * @param {Function} callback
 *      A callback function to be called with the list
 * @param {Object?} scope
 *      The scope for the callback function
 */
exports.getAll = function (callback, scope) {
    this.exec('getAll', null, callback, scope);
};

/**
 * Property list for given scheduled notifications.
 * If called without IDs, all notification will be returned.
 *
 * @param {Number[]?} ids
 *      Set of notification IDs
 * @param {Function} callback
 *      A callback function to be called with the list
 * @param {Object?} scope
 *      The scope for the callback function
 */
exports.getScheduled = function () {
    var args = Array.apply(null, arguments);

    if (typeof args[0] == 'function') {
        args.unshift([]);
    }

    var ids      = args[0],
        callback = args[1],
        scope    = args[2];

    if (!Array.isArray(ids)) {
        ids = [ids];
    }

    if (!Array.isArray(ids)) {
        this.exec('getSingleScheduled', Number(ids), callback, scope);
        return;
    }

    ids = this.convertIds(ids);

    this.exec('getScheduled', ids, callback, scope);
};

/**
 * Property list for all scheduled notifications.
 *
 * @param {Function} callback
 *      A callback function to be called with the list
 * @param {Object?} scope
 *      The scope for the callback function
 */
exports.getAllScheduled = function (callback, scope) {
    this.exec('getScheduled', null, callback, scope);
};

/**
 * Property list for given triggered notifications.
 * If called without IDs, all notification will be returned.
 *
 * @param {Number[]?} ids
 *      Set of notification IDs
 * @param {Function} callback
 *      A callback function to be called with the list
 * @param {Object?} scope
 *      The scope for the callback function
 */
exports.getTriggered = function () {
    var args = Array.apply(null, arguments);

    if (typeof args[0] == 'function') {
        args.unshift([]);
    }

    var ids      = args[0],
        callback = args[1],
        scope    = args[2];

    if (!Array.isArray(ids)) {
        ids = [ids];
    }

    if (!Array.isArray(ids)) {
        this.exec('getSingleTriggered', Number(ids), callback, scope);
        return;
    }

    ids = this.convertIds(ids);

    this.exec('getTriggered', ids, callback, scope);
};

/**
 * Property list for all triggered notifications.
 *
 * @param {Function} callback
 *      A callback function to be called with the list
 * @param {Object?} scope
 *      The scope for the callback function
 */
exports.getAllTriggered = function (callback, scope) {
    this.exec('getTriggered', null, callback, scope);
};

/**
 * Informs if the app has the permission to show notifications.
 *
 * @param {Function} callback
 *      The function to be exec as the callback
 * @param {Object?} scope
 *      The callback function's scope
 */
exports.hasPermission = function (callback, scope) {
    var fn = this.createCallbackFn(callback, scope);

    if (device.platform != 'iOS') {
        fn(true);
        return;
    }

    exec(fn, null, 'LocalNotification', 'hasPermission', []);
};

/**
 * Register permission to show notifications if not already granted.
 *
 * @param {Function} callback
 *      The function to be exec as the callback
 * @param {Object?} scope
 *      The callback function's scope
 */
exports.registerPermission = function (callback, scope) {

    if (this._registered) {
        return this.hasPermission(callback, scope);
    } else {
        this._registered = true;
    }

    var fn = this.createCallbackFn(callback, scope);

    if (device.platform != 'iOS') {
        fn(true);
        return;
    }

    exec(fn, null, 'LocalNotification', 'registerPermission', []);
};


/**********
 * EVENTS *
 **********/

/**
 * Register callback for given event.
 *
 * @param {String} event
 *      The event's name
 * @param {Function} callback
 *      The function to be exec as callback
 * @param {Object?} scope
 *      The callback function's scope
 */
exports.on = function (event, callback, scope) {

    if (typeof callback !== "function")
        return;

    if (!this._listener[event]) {
        this._listener[event] = [];
    }

    var item = [callback, scope || window];

    this._listener[event].push(item);
};

/**
 * Unregister callback for given event.
 *
 * @param {String} event
 *      The event's name
 * @param {Function} callback
 *      The function to be exec as callback
 */
exports.un = function (event, callback) {
    var listener = this._listener[event];

    if (!listener)
        return;

    for (var i = 0; i < listener.length; i++) {
        var fn = listener[i][0];

        if (fn == callback) {
            listener.splice(i, 1);
            break;
        }
    }
};