//
//  SignUpViewController.m
//  House and Land
//
//  Created by Sam Davies on 5/3/18.
//  Copyright © 2018 Digital Noir. All rights reserved.
//

#import "SignUpViewController.h"
#import "DatabaseHelper.h"
#import "User.h"
#import "CustomAlertView.h"
#import "ColorHelper.h"
#import "StateSelectionView.h"
#import "CustomLoadingView.h"

@interface SignUpViewController ()

@end

@implementation SignUpViewController

#pragma mark ViewController lifecycle methods

- (void)viewDidLoad {
    [super viewDidLoad];

    self.nameTextField.delegate = self;
    self.emailAddressTextField.delegate = self;
    self.passwordTextField.delegate = self;
    self.confirmPasswordTextField.delegate = self;

    [self.userDetailsView.layer setCornerRadius:5];
    [self.userDetailsView.layer setBorderWidth:1];
    [self.userDetailsView.layer setBorderColor:[[UIColor colorWithRed:241.0/255.0 green:241.0/255.0 blue:241.0/255.0 alpha:1.0] CGColor]];

    [self.stateView.layer setCornerRadius:5];
    [self.stateView.layer setBorderWidth:1];
    [self.stateView.layer setBorderColor:[[UIColor colorWithRed:241.0/255.0 green:241.0/255.0 blue:241.0/255.0 alpha:1.0] CGColor]];

    [self.signUpButton.layer setCornerRadius:5];
    [self.loginButton.layer setCornerRadius:5];
}

#pragma mark IBActions

- (IBAction)backButtonPressed:(id)sender {
    [self.navigationController popViewControllerAnimated:YES];
}

- (IBAction)loginButtonPressed:(id)sender {
    [self performSegueWithIdentifier:@"loginSegueIdentifier" sender:self];
}

- (IBAction)stateButtonPressed:(id)sender {

    StateSelectionView *stateSelectionView = [[StateSelectionView alloc] initWithFrame:CGRectMake(0, 0, self.view.frame.size.width, self.view.frame.size.height)];
    [stateSelectionView setupStateSelectionViewInParentView:self SelectedValue:self.stateLabel.text];
    [self.view addSubview:stateSelectionView];
}

- (IBAction)signUpButtonPressed:(id)sender {

    [[CustomLoadingView new] setupLoadingViewWithTitle:@""];

    [self.view endEditing:YES];

    if ([self validateData]) {
        [[DatabaseHelper shareInstanceHelper] sendRegisterUserWithName:self.nameTextField.text Email:self.emailAddressTextField.text Password:self.passwordTextField.text ConfirmPassword:self.confirmPasswordTextField.text State:self.stateLabel.text NotificationStatus:@"1" CompletionHandler:^(NSDictionary *returnData) {

            dispatch_async(dispatch_get_main_queue(), ^{

                BOOL success = [[returnData allKeys] containsObject:@"success"];
                if (success) {

                    NSString *token = [[returnData objectForKey:@"success"] objectForKey:@"token"];

                    User *currentUser = [[DatabaseHelper shareInstanceHelper] getCurrentUser];
                    [currentUser setSessionKey:token];
                    [currentUser setUserEmail:self.emailAddressTextField.text];
                    [currentUser setUserName:self.nameTextField.text];
                    [currentUser setUserState:self.stateLabel.text];

                    [[DatabaseHelper shareInstanceHelper] saveCurrentUserLocally:currentUser];
                }

                CustomAlertView *alertView = [[CustomAlertView alloc] initWithFrame:CGRectMake(0.0f, 0.0f, self.view.frame.size.width, self.view.frame.size.height)];
                [alertView setupWithAlertDescription:success ? @"You registration has been successful and we've logged you in." : @"Error" CloseButton:NO Button1Text:@"THANKS" Button1CustomAction:YES];
                [alertView.firstButton addTarget:self action:@selector(signUpSuccessful) forControlEvents:UIControlEventTouchUpInside];
                [self.view addSubview:alertView];
            });
        }];
    }
}

#pragma mark private methods

- (BOOL)validateData {

    if (![self validateName] || ![self validateEmail] || ![self validatePassword] || ![self validateConfirmPassword] || ![self validateState]) {
        return NO;
    }

    [self enableErrorValidationForTextField:nil];

    return YES;
}

- (void)showAlertWithDescription:(NSString *)description {

    CustomAlertView *alertView = [[CustomAlertView alloc] initWithFrame:CGRectMake(0, 0, self.view.frame.size.width, self.view.frame.size.height)];
    [alertView setupWithAlertDescription:description CloseButton:NO Button1Text:@"THANKS" Button1CustomAction:NO];
    [self.view addSubview:alertView];
}

- (BOOL)validateName {
    NSString *charactersSetString = @"0123456789!@#$%^&*()-_=+";
    NSCharacterSet *onlyLetters = [NSCharacterSet characterSetWithCharactersInString:charactersSetString];

    BOOL nameIsValid = ![onlyLetters isSupersetOfSet:[NSCharacterSet characterSetWithCharactersInString:self.nameTextField.text]];

    if ([[self.nameTextField.text stringByReplacingOccurrencesOfString:@" " withString:@""] isEqualToString:@""]) {

        [self showAlertWithDescription:@"You must enter a name before you can register."];
        [self enableErrorValidationForTextField:self.nameTextField];

        return NO;
    } else if (!nameIsValid) {

        [self showAlertWithDescription:@"Invalid name."];
        [self enableErrorValidationForTextField:self.nameTextField];

        return NO;
    }

    return YES;
}

- (BOOL)validateEmail {

    NSString *regExPattern = @"[A-Z0-9a-z._%+-]+@[A-Za-z0-9.-]+\\.[A-Za-z]{2,4}";

    NSRegularExpression *regEx = [[NSRegularExpression alloc] initWithPattern:regExPattern options:NSRegularExpressionCaseInsensitive error:nil];
    NSUInteger regExMatches = [regEx numberOfMatchesInString:self.emailAddressTextField.text options:0 range:NSMakeRange(0, [self.emailAddressTextField.text length])];


    if ([[self.emailAddressTextField.text stringByReplacingOccurrencesOfString:@" " withString:@""] isEqualToString:@""]) {

        [self showAlertWithDescription:@"You must enter an email address before you can register."];
        [self enableErrorValidationForTextField:self.emailAddressTextField];

        return NO;
    } else if (regExMatches == 0) {

        [self showAlertWithDescription:@"Invalid email."];
        [self enableErrorValidationForTextField:self.emailAddressTextField];

        return NO;
    }

    return YES;
}

- (BOOL)validatePassword {

    if ([[self.passwordTextField.text stringByReplacingOccurrencesOfString:@" " withString:@""] isEqualToString:@""]) {

        [self showAlertWithDescription:@"You must enter a password before you can register."];
        [self enableErrorValidationForTextField:self.passwordTextField];

        return NO;
    } else if (self.passwordTextField.text.length < 6 || self.passwordTextField.text.length > 32) {

        [self showAlertWithDescription:@"Invalid password."];
        [self enableErrorValidationForTextField:self.passwordTextField];

        return NO;
    }

    return YES;
}

- (BOOL)validateConfirmPassword {

    if (![self.confirmPasswordTextField.text isEqualToString:self.passwordTextField.text]) {

        [self showAlertWithDescription:@"The passwords that you enter must match."];
        [self enableErrorValidationForTextField:self.confirmPasswordTextField];

        return NO;
    }

    return YES;
}

- (BOOL)validateState {

    if ([self.stateLabel.text isEqualToString:@"State"]) {

        [self showAlertWithDescription:@"You must choose a state before you can register."];
        [self enableErrorValidationForTextField:self.stateLabel];

        return NO;
    }

    return YES;
}

- (BOOL)textFieldShouldReturn:(UITextField *)textField {
    [textField resignFirstResponder];
    return YES;
}

- (void)enableErrorValidationForTextField:(UITextField*)textField {

    for (UIView *tempView in self.currentErrorValidationTextField.subviews) {
        if ([tempView isKindOfClass:[UIImageView class]]) {
            [tempView removeFromSuperview];
        }
    }

    [self.currentErrorValidationTextField setTextColor:[UIColor blackColor]];
    [self.currentErrorValidationTextField setTintColor:[UIColor blackColor]];
    self.currentErrorValidationTextField = textField;
    [self.currentErrorValidationTextField setTextColor:CUSTOM_COLOR_RED(1)];
    [self.currentErrorValidationTextField setTintColor:CUSTOM_COLOR_RED(1)];

    UIImageView *errorValidationImageView = [[UIImageView alloc] initWithFrame:CGRectMake(self.currentErrorValidationTextField.frame.size.width-self.currentErrorValidationTextField.frame.size.height/2, self.currentErrorValidationTextField.frame.size.height/4, self.currentErrorValidationTextField.frame.size.height/2, self.currentErrorValidationTextField.frame.size.height/2)];
    [errorValidationImageView setImage:[UIImage imageNamed:@"validationErrorIcon"]];
    [errorValidationImageView setContentMode:UIViewContentModeScaleAspectFit];

    [self.currentErrorValidationTextField addSubview:errorValidationImageView];
}

- (void)signUpSuccessful {
    [self.navigationController popViewControllerAnimated:YES];
}

#pragma mark public methods

- (void)userSelectedState:(NSString*)state {

    [self.stateLabel setTextColor:CUSTOM_COLOR_BLUE(1)];
    [self.stateLabel setText:state];
}


@end