//
//  KMEmailSubWindowController.m
//  PDF Reader Pro Edition
//
//  Created by 王帅 on 2019/4/18.
//

#import "KMEmailSubWindowController.h"
#import "NSButton+TitleColor.h"

@interface KMEmailSubWindowController ()

@property (nonatomic,assign) IBOutlet NSTextField *textLabel;
@property (nonatomic,assign) IBOutlet NSTextField *textField;
@property (nonatomic,assign) IBOutlet NSButton *button;

@property (nonatomic,assign) IBOutlet NSProgressIndicator *indicator;

@end

@implementation KMEmailSubWindowController

#pragma mark - Init Methods

- (instancetype)init {
    if (self = [super initWithWindowNibName:@"KMEmailSubWindowController"]) {
        
    }
    return self;
}

#pragma mark - Window Methods

- (void)windowDidLoad {
    [super windowDidLoad];
    
    // Implement this method to handle any initialization after your window controller's window has been loaded from its nib file.
    [self.window setBackgroundColor:[NSColor whiteColor]];
    [self.window setMovableByWindowBackground:YES];
    
    self.textLabel.stringValue = NSLocalizedString(@"Subscribe to get the latest news and special offers!", nil);
    self.textField.placeholderString = NSLocalizedString(@"Enter your email", nil);
    self.button.title = NSLocalizedString(@"Subscribe Now", nil);
    
    self.button.wantsLayer = YES;
    self.button.layer.masksToBounds = YES;
    self.button.layer.cornerRadius = 2;
    self.button.layer.backgroundColor = [NSColor colorWithRed:46.0/255.0 green:114.0/255.0 blue:230.0/255.0 alpha:1.0].CGColor;
    [self.button setTitleColor:[NSColor whiteColor]];
}

#pragma mark - Button Actions

- (IBAction)buttonAction:(id)sender {
    if (![self isValidateEmail:self.textField.stringValue]) {
        NSAlert *alert = [[NSAlert alloc] init];
        [alert setAlertStyle:NSAlertStyleCritical];
        [alert setMessageText:@""];
        [alert setInformativeText:NSLocalizedString(@"Please enter valid email", nil)];
        [alert addButtonWithTitle:NSLocalizedString(@"OK", nil)];
        [alert runModal];
        return;
    }
    
    self.button.enabled = NO;
    self.textField.enabled = NO;
    self.indicator.hidden = NO;
    [self.indicator startAnimation:nil];
    [self subscriptionWithEmail:self.textField.stringValue completionHandler:^(NSError *error) {
        self.button.enabled = YES;
        self.textField.enabled = YES;
        self.indicator.hidden = YES;
        [self.indicator stopAnimation:nil];
        if (!error) {
            [[NSUserDefaults standardUserDefaults] setBool:YES forKey:@"KMEmailSubscriptionShowKey"];
            [[NSUserDefaults standardUserDefaults] synchronize];
            [self.window close];
        }
    }];
}

#pragma mark - Private Methods

- (BOOL)isValidateEmail:(NSString *)email {
    NSString *emailRegex = @"[A-Z0-9a-z._%+-]+@[A-Za-z0-9.-]+\\.[A-Za-z]{2,4}";
    NSPredicate *emailTest = [NSPredicate predicateWithFormat:@"SELF MATCHES%@",emailRegex];
    return [emailTest evaluateWithObject:email];
}

- (void)subscriptionWithEmail:(NSString *)email completionHandler:(void (^)(NSError *error))handler {
    NSString *string = @"https://store.pdfreaderpro.com/api/member/subscribe";
    NSMutableURLRequest *request = [NSMutableURLRequest requestWithURL:[NSURL URLWithString:string]];
    [request setHTTPMethod:@"POST"];
    [request setValue:@"application/json" forHTTPHeaderField:@"Content-Type"];
    
    NSDictionary *body = @{@"member" : @{@"email" : email}};
    [request setHTTPBody:[NSJSONSerialization dataWithJSONObject:body options:NSJSONWritingPrettyPrinted error:nil]];

    NSURLSession *session = [NSURLSession sharedSession];
    NSURLSessionDataTask *task = [session dataTaskWithRequest:request
                                            completionHandler:^(NSData *data, NSURLResponse *response, NSError *error) {
                                                if (!error) {
                                                    NSDictionary *dic = [NSJSONSerialization JSONObjectWithData:data
                                                                                                        options:NSJSONReadingMutableContainers error:nil];
                                                    NSDictionary *dataDic = dic[@"member"];
                                                    if (dataDic) {
                                                        
                                                    } else {
                                                        error = [NSError errorWithDomain:@"" code:0 userInfo:dic];
                                                    }
                                                }
                                                dispatch_async(dispatch_get_main_queue(), ^{
                                                    if (handler) {
                                                        handler(error);
                                                    }
                                                });
                                            }];
    [task resume];
}

#pragma mark - Public Methods

+ (BOOL)isAllowsShow {
    if ([[NSUserDefaults standardUserDefaults] objectForKey:@"KMEmailSubscriptionShowKey"]) {
        return NO;
    }
    return YES;
}

+ (KMEmailSubWindowController *)windowController {
    static KMEmailSubWindowController *singleton = nil;
    static dispatch_once_t pred;
    dispatch_once(&pred, ^{
        singleton = [[super allocWithZone:NULL] init];
    });
    return singleton;
}

+ (instancetype)allocWithZone:(struct _NSZone *)zone {
    return [self windowController];
}

@end