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/*
 * 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@
 */

#import "APPBadge.h"
#import "UIApplication+APPBadge.h"
#import "AppDelegate+APPRegisterUserNotificationSettings.h"

@interface APPBadge ()

// Needed when calling `registerPermission`
@property (nonatomic, retain) CDVInvokedUrlCommand* command;

@end

@implementation APPBadge

#pragma mark -
#pragma mark Interface

/**
 * Clears the badge of the app icon.
 *
 */
- (void) clearBadge:(CDVInvokedUrlCommand *)command
{
    [self.commandDelegate runInBackground:^{
        [self.app setApplicationIconBadgeNumber:0];

        [self sendPluginResult:CDVCommandStatus_OK
                 messageAsLong:0
                    callbackId:command.callbackId];
    }];
}

/**
 * Sets the badge of the app icon.
 *
 * @param badge
 *      The badge to be set
 */
- (void) setBadge:(CDVInvokedUrlCommand *)command
{
    NSArray* args = [command arguments];
    int number    = [[args objectAtIndex:0] intValue];

    [self.commandDelegate runInBackground:^{
        [self.app setApplicationIconBadgeNumber:number];

        [self sendPluginResult:CDVCommandStatus_OK
                 messageAsLong:number
                    callbackId:command.callbackId];
    }];
}

/**
 * Gets the badge of the app icon.
 *
 * @param callback
 *      The function to be exec as the callback
 */
- (void) getBadge:(CDVInvokedUrlCommand *)command
{
    [self.commandDelegate runInBackground:^{
        long badge = [self.app applicationIconBadgeNumber];

        [self sendPluginResult:CDVCommandStatus_OK
                 messageAsLong:badge
                    callbackId:command.callbackId];
    }];
}

/**
 * Informs if the app has the permission to show badges.
 *
 * @param callback
 *      The function to be exec as the callback
 */
- (void) hasPermission:(CDVInvokedUrlCommand *)command
{
    [self.commandDelegate runInBackground:^{
        BOOL hasPermission = [self.app hasPermissionToDisplayBadges];

        [self sendPluginResult:CDVCommandStatus_OK
                 messageAsBool:hasPermission
                    callbackId:command.callbackId];
    }];
}

/**
 * Register permission to show badges.
 *
 * @param callback
 *      The function to be exec as the callback
 */
- (void) registerPermission:(CDVInvokedUrlCommand *)command
{
    if (![[UIApplication sharedApplication]
         respondsToSelector:@selector(registerUserNotificationSettings:)])
    {
        return [self hasPermission:command];
    }

    _command = command;

    [self.commandDelegate runInBackground:^{
        [self.app registerPermissionToDisplayBadges];
    }];
}

#pragma mark -
#pragma mark Delegates

/**
 * Called on otification settings registration is completed.
 */
- (void) didRegisterUserNotificationSettings:(UIUserNotificationSettings*)settings
{
    if (_command)
    {
        [self hasPermission:_command];
        _command = NULL;
    }
}

#pragma mark -
#pragma mark Life Cycle

/**
 * Registers obervers after plugin was initialized.
 */
- (void) pluginInitialize
{
    NSNotificationCenter* center = [NSNotificationCenter
                                    defaultCenter];

    [center addObserver:self
               selector:@selector(didRegisterUserNotificationSettings:)
                   name:UIApplicationRegisterUserNotificationSettings
                 object:nil];
}

#pragma mark -
#pragma mark Helper

/**
 * Short hand for shared application instance.
 */
- (UIApplication*) app
{
    return [UIApplication sharedApplication];
}

/**
 * Sends a plugin result with the specified status and message.
 */
- (void) sendPluginResult:(CDVCommandStatus)status
            messageAsBool:(BOOL)msg
               callbackId:(NSString*)callbackId
{
    CDVPluginResult* result;

    result = [CDVPluginResult resultWithStatus:CDVCommandStatus_OK
                                 messageAsBool:msg];

    [self.commandDelegate sendPluginResult:result
                                callbackId:callbackId];
}

/**
 * Sends a plugin result with the specified status and message.
 */
- (void) sendPluginResult:(CDVCommandStatus)status
            messageAsLong:(long)msg
               callbackId:(NSString*)callbackId
{
    CDVPluginResult* result;

    result = [CDVPluginResult resultWithStatus:CDVCommandStatus_OK
                                 messageAsDouble:msg];

    [self.commandDelegate sendPluginResult:result
                                callbackId:callbackId];
}

@end