//
//  KBEmailLoginVC.m
//  keyBoard
//
//  Created by Mac on 2025/12/3.
//

#import "KBEmailLoginVC.h"
#import "KBEmailRegistVC.h"
#import "KBForgetPwdVC.h"
#import "KBLoginVM.h"
#import "AppDelegate.h"
#import "BaseTabBarController.h"
@interface KBEmailLoginVC () <UITextViewDelegate, UITextFieldDelegate>

// 背景与顶部装饰
@property (nonatomic, strong) UIImageView *bgImageView;          // 整体背景图：login_bg_icon
@property (nonatomic, strong) UIImageView *topRightImageView;    // 顶部右侧装饰图：login_jianp_icon
@property (nonatomic, strong) UIButton *backButton;              // 顶部左侧返回按钮

// 底部白色容器（仅上圆角 26）
@property (nonatomic, strong) UIView *contentContainerView;

// 可滚动区域（小屏内容多时允许纵向滚动）
@property (nonatomic, strong) UIScrollView *scrollView;
@property (nonatomic, strong) UIView *scrollContentView;

// 标题
@property (nonatomic, strong) UILabel *titleLabel;

// 输入框
@property (nonatomic, strong) UIView *emailFieldContainer;
@property (nonatomic, strong) UITextField *emailTextField;

@property (nonatomic, strong) UIView *passwordFieldContainer;
@property (nonatomic, strong) UITextField *passwordTextField;
@property (nonatomic, strong) UIButton *passwordToggleButton;    // 显示/隐藏密码

// 操作按钮
@property (nonatomic, strong) UIButton *forgotPasswordButton;
@property (nonatomic, strong) UIButton *submitButton;            // Login

// 协议 & 底部文案
@property (nonatomic, strong) UITextView *agreementTextView;
@property (nonatomic, strong) UILabel *accountTipLabel;          // “Don't Have An Account?”
@property (nonatomic, strong) UIButton *signUpButton;            // “Sign Up”
@property (nonatomic, strong) KBLoginVM *loginVM;    // Confirm

@end

@implementation KBEmailLoginVC

- (void)viewDidLoad {
    [super viewDidLoad];
    // 与登录/注册页一致：隐藏通用导航栏，使用自定义背景 + 返回按钮
    self.loginVM = [[KBLoginVM alloc] init];
    self.kb_enableCustomNavBar = NO;
    self.view.backgroundColor = [UIColor whiteColor];
    [self kb_addTapToDismissKeyboard];
    
    [self setupUI];
}

- (void)viewDidLayoutSubviews {
    [super viewDidLayoutSubviews];
    // 仅白色容器顶部圆角
    if (!CGRectIsEmpty(self.contentContainerView.bounds)) {
        UIRectCorner corners = UIRectCornerTopLeft | UIRectCornerTopRight;
        UIBezierPath *path = [UIBezierPath bezierPathWithRoundedRect:self.contentContainerView.bounds
                                                   byRoundingCorners:corners
                                                         cornerRadii:CGSizeMake(26, 26)];
        CAShapeLayer *mask = [CAShapeLayer layer];
        mask.frame = self.contentContainerView.bounds;
        mask.path = path.CGPath;
        self.contentContainerView.layer.mask = mask;
    }
}

#pragma mark - UI

- (void)setupUI {
    // 背景图
    [self.view addSubview:self.bgImageView];
    [self.bgImageView mas_makeConstraints:^(MASConstraintMaker *make) {
        make.edges.equalTo(self.view);
    }];

    // 顶部左侧返回按钮
    [self.view addSubview:self.backButton];
    [self.backButton mas_makeConstraints:^(MASConstraintMaker *make) {
        make.left.equalTo(self.view).offset(16);
        make.top.equalTo(self.view).offset(KB_StatusBarHeight() + 8);
        make.width.height.mas_equalTo(32);
    }];
    
    // 顶部右侧装饰图
    [self.view addSubview:self.topRightImageView];
    [self.topRightImageView mas_makeConstraints:^(MASConstraintMaker *make) {
        make.top.equalTo(self.view).offset(KB_StatusBarHeight() + KBFit(24));
        make.right.equalTo(self.view).offset(KBFit(10));
        make.width.mas_equalTo(KBFit(244));
        make.height.mas_equalTo(KBFit(224));
    }];
    
    // 底部白色容器
    [self.view addSubview:self.contentContainerView];
    [self.contentContainerView mas_makeConstraints:^(MASConstraintMaker *make) {
        make.left.right.bottom.equalTo(self.view);
        make.top.equalTo(self.view).offset(KBFit(272));
    }];
    
    // Scroll 区域
    [self.contentContainerView addSubview:self.scrollView];
    [self.scrollView mas_makeConstraints:^(MASConstraintMaker *make) {
        make.edges.equalTo(self.contentContainerView);
    }];
    
    [self.scrollView addSubview:self.scrollContentView];
    [self.scrollContentView mas_makeConstraints:^(MASConstraintMaker *make) {
        make.edges.equalTo(self.scrollView);
        make.width.equalTo(self.scrollView);
    }];
    
    // 标题：Login With Email Password
    [self.scrollContentView addSubview:self.titleLabel];
    [self.titleLabel mas_makeConstraints:^(MASConstraintMaker *make) {
        make.top.equalTo(self.scrollContentView).offset(27);
        make.centerX.equalTo(self.scrollContentView);
    }];
    
    // 邮箱输入
    [self.scrollContentView addSubview:self.emailFieldContainer];
    [self.emailFieldContainer mas_makeConstraints:^(MASConstraintMaker *make) {
        make.top.equalTo(self.titleLabel.mas_bottom).offset(24);
        make.left.equalTo(self.scrollContentView).offset(30);
        make.right.equalTo(self.scrollContentView).offset(-30);
        make.height.mas_equalTo(52);
    }];
    
    [self.emailFieldContainer addSubview:self.emailTextField];
    NSString *email = [[NSUserDefaults standardUserDefaults] objectForKey:KBUserEmailKey];
    self.emailTextField.text = email;
    [self.emailTextField mas_makeConstraints:^(MASConstraintMaker *make) {
        make.edges.equalTo(self.emailFieldContainer).insets(UIEdgeInsetsMake(0, 16, 0, 16));
    }];
    
    // 密码输入
    [self.scrollContentView addSubview:self.passwordFieldContainer];
    [self.passwordFieldContainer mas_makeConstraints:^(MASConstraintMaker *make) {
        make.top.equalTo(self.emailFieldContainer.mas_bottom).offset(16);
        make.left.right.equalTo(self.emailFieldContainer);
        make.height.equalTo(self.emailFieldContainer);
    }];
    
    [self.passwordFieldContainer addSubview:self.passwordToggleButton];
    [self.passwordToggleButton mas_makeConstraints:^(MASConstraintMaker *make) {
        make.centerY.equalTo(self.passwordFieldContainer);
        make.right.equalTo(self.passwordFieldContainer).offset(-16);
        make.width.height.mas_equalTo(24);
    }];
    
    [self.passwordFieldContainer addSubview:self.passwordTextField];
    [self.passwordTextField mas_makeConstraints:^(MASConstraintMaker *make) {
        make.top.bottom.equalTo(self.passwordFieldContainer);
        make.left.equalTo(self.passwordFieldContainer).offset(16);
        make.right.equalTo(self.passwordToggleButton.mas_left).offset(-8);
    }];
    
    // Forgot Password?
    [self.scrollContentView addSubview:self.forgotPasswordButton];
    [self.forgotPasswordButton mas_makeConstraints:^(MASConstraintMaker *make) {
        make.top.equalTo(self.passwordFieldContainer.mas_bottom).offset(12);
        make.right.equalTo(self.passwordFieldContainer);
    }];
    
    // Login 按钮
    [self.scrollContentView addSubview:self.submitButton];
    [self.submitButton mas_makeConstraints:^(MASConstraintMaker *make) {
        make.top.equalTo(self.forgotPasswordButton.mas_bottom).offset(24);
        make.left.right.equalTo(self.emailFieldContainer);
        make.height.mas_equalTo(56);
    }];
    
    // 协议文案
    [self.scrollContentView addSubview:self.agreementTextView];
    [self.agreementTextView mas_makeConstraints:^(MASConstraintMaker *make) {
        make.top.equalTo(self.submitButton.mas_bottom).offset(24);
        make.left.equalTo(self.scrollContentView).offset(30);
        make.right.equalTo(self.scrollContentView).offset(-30);
    }];
    
    // 底部账号切换文案
    UIView *accountLine = [UIView new];
    [self.scrollContentView addSubview:accountLine];
    [accountLine mas_makeConstraints:^(MASConstraintMaker *make) {
        make.top.equalTo(self.agreementTextView.mas_bottom).offset(12);
        make.centerX.equalTo(self.scrollContentView);
        make.bottom.equalTo(self.scrollContentView).offset(-KB_SAFE_BOTTOM - 16);
    }];
    
    [accountLine addSubview:self.accountTipLabel];
    [accountLine addSubview:self.signUpButton];
    
    [self.accountTipLabel mas_makeConstraints:^(MASConstraintMaker *make) {
        make.top.left.bottom.equalTo(accountLine);
    }];
    
    [self.signUpButton mas_makeConstraints:^(MASConstraintMaker *make) {
        make.left.equalTo(self.accountTipLabel.mas_right).offset(4);
        make.right.equalTo(accountLine);
        make.centerY.equalTo(self.accountTipLabel);
    }];
}

#pragma mark - Actions

- (void)onTapBack {
    if (self.navigationController && self.navigationController.viewControllers.count > 1) {
        [self.navigationController popViewControllerAnimated:YES];
    } else if (self.presentingViewController) {
        [self dismissViewControllerAnimated:YES completion:nil];
    }
}

- (void)onTapSubmit {
    KBLOG(@"KBEmailLoginVC onTapSubmit, email=%@, pwdLen=%zd",
           self.emailTextField.text,
          self.passwordTextField.text.length);
    NSString *email = self.emailTextField.text ? self.emailTextField.text : @"";
    NSString *password = self.passwordTextField.text ? self.passwordTextField.text : @"";

    [self.loginVM emailLoginEmail:email password:password WithCompletion:^(BOOL success, NSError * _Nullable error) {
        if (success) {
            [[NSUserDefaults standardUserDefaults] setValue:email forKey:KBUserEmailKey];
            [[NSUserDefaults standardUserDefaults] synchronize];
            id<UIApplicationDelegate> appDelegate = UIApplication.sharedApplication.delegate;
            if ([appDelegate respondsToSelector:@selector(setupRootVC)]) {
                AppDelegate *delegate = (AppDelegate *)appDelegate;
                //                    [delegate toMainTabbarVC];
                delegate.window = [[UIWindow alloc] initWithFrame:[[UIScreen mainScreen] bounds]];
                delegate.window.backgroundColor = [UIColor whiteColor];
                [delegate.window makeKeyAndVisible];
                UIViewController *rootVC = nil;
                rootVC = [[BaseTabBarController alloc] init];
                delegate.window.rootViewController = rootVC;
            }
        }
    }];

}

- (void)onTapForgotPassword {
    KBLOG(@"KBEmailLoginVC onTapForgotPassword");
    KBForgetPwdVC *vc = [[KBForgetPwdVC alloc] init];
    UINavigationController *nav = KB_CURRENT_NAV;
    if ([nav isKindOfClass:[BaseNavigationController class]]) {
        [(BaseNavigationController *)nav kb_pushViewControllerRemovingSameClass:vc animated:YES];
    } else {
        [nav pushViewController:vc animated:YES];
    }
}

- (void)onTapSignUp {
    KBLOG(@"KBEmailLoginVC onTapSignUp");
    KBEmailRegistVC *vc = [[KBEmailRegistVC alloc] init];
    UINavigationController *nav = KB_CURRENT_NAV;
    if ([nav isKindOfClass:[BaseNavigationController class]]) {
        [(BaseNavigationController *)nav kb_pushViewControllerRemovingSameClass:vc animated:YES];
    } else {
        [nav pushViewController:vc animated:YES];
    }
}

- (void)onTapTogglePassword:(UIButton *)sender {
    sender.selected = !sender.selected;
    self.passwordTextField.secureTextEntry = !sender.selected;
}

- (void)kb_handleAgreementTap:(UITapGestureRecognizer *)tap {
    UITextView *textView = self.agreementTextView;
    CGPoint point = [tap locationInView:textView];

    CGPoint location = point;
    location.x -= textView.textContainerInset.left;
    location.y -= textView.textContainerInset.top;

    NSLayoutManager *layoutManager = textView.layoutManager;
    NSTextContainer *textContainer = textView.textContainer;
    NSUInteger glyphIndex = [layoutManager glyphIndexForPoint:location
                                              inTextContainer:textContainer];
    if (glyphIndex >= textView.textStorage.length) { return; }

    NSUInteger charIndex = [layoutManager characterIndexForGlyphAtIndex:glyphIndex];

    NSString *lowerFull = textView.text.lowercaseString ?: @"";
    NSRange termsRange = [lowerFull rangeOfString:@"terms of service"];
    NSRange privacyRange = [lowerFull rangeOfString:@"privacy policy"];

    BOOL hitTerms = (termsRange.location != NSNotFound && NSLocationInRange(charIndex, termsRange));
    BOOL hitPrivacy = (privacyRange.location != NSNotFound && NSLocationInRange(charIndex, privacyRange));
    if (hitTerms || hitPrivacy) {
        KBLOG(@"KBEmailLoginVC tap policy");
    }
}

#pragma mark - UITextFieldDelegate

- (BOOL)textFieldShouldReturn:(UITextField *)textField {
    if (textField == self.emailTextField) {
        [self.passwordTextField becomeFirstResponder];
    } else if (textField == self.passwordTextField) {
        [textField resignFirstResponder];
        [self onTapSubmit];
    }
    return YES;
}

#pragma mark - Lazy UI

- (UIImageView *)bgImageView {
    if (!_bgImageView) {
        _bgImageView = [[UIImageView alloc] initWithImage:[UIImage imageNamed:@"login_bg_icon"]];
        _bgImageView.contentMode = UIViewContentModeScaleAspectFill;
        _bgImageView.clipsToBounds = YES;
    }
    return _bgImageView;
}

- (UIImageView *)topRightImageView {
    if (!_topRightImageView) {
        _topRightImageView = [[UIImageView alloc] initWithImage:[UIImage imageNamed:@"login_jianp_icon"]];
        _topRightImageView.contentMode = UIViewContentModeScaleAspectFit;
        _topRightImageView.clipsToBounds = YES;
    }
    return _topRightImageView;
}

- (UIButton *)backButton {
    if (!_backButton) {
        _backButton = [UIButton buttonWithType:UIButtonTypeCustom];
        UIImage *img = [UIImage imageNamed:@"back"];
        if (!img) { img = [UIImage imageNamed:@"back_black_icon"]; }
        if (img) {
            [_backButton setImage:img forState:UIControlStateNormal];
        }
        _backButton.adjustsImageWhenHighlighted = YES;
        _backButton.contentHorizontalAlignment = UIControlContentHorizontalAlignmentLeft;
        [_backButton addTarget:self action:@selector(onTapBack) forControlEvents:UIControlEventTouchUpInside];
    }
    return _backButton;
}

- (UIView *)contentContainerView {
    if (!_contentContainerView) {
        _contentContainerView = [UIView new];
        _contentContainerView.backgroundColor = [UIColor whiteColor];
    }
    return _contentContainerView;
}

- (UIScrollView *)scrollView {
    if (!_scrollView) {
        _scrollView = [UIScrollView new];
        _scrollView.showsVerticalScrollIndicator = NO;
        _scrollView.alwaysBounceVertical = NO;
        _scrollView.keyboardDismissMode = UIScrollViewKeyboardDismissModeOnDrag;
    }
    return _scrollView;
}

- (UIView *)scrollContentView {
    if (!_scrollContentView) {
        _scrollContentView = [UIView new];
        _scrollContentView.backgroundColor = [UIColor clearColor];
    }
    return _scrollContentView;
}

- (UILabel *)titleLabel {
    if (!_titleLabel) {
        _titleLabel = [UILabel new];
        _titleLabel.text = KBLocalized(@"Login With Email Password");
        _titleLabel.textColor = [UIColor colorWithHex:KBBlackValue];
        _titleLabel.font = [KBFont bold:18];
        _titleLabel.textAlignment = NSTextAlignmentCenter;
    }
    return _titleLabel;
}

- (UIView *)emailFieldContainer {
    if (!_emailFieldContainer) {
        _emailFieldContainer = [UIView new];
        _emailFieldContainer.backgroundColor = [UIColor colorWithHex:0xF7F7F7];
        _emailFieldContainer.layer.cornerRadius = 10.0;
        _emailFieldContainer.layer.masksToBounds = YES;
    }
    return _emailFieldContainer;
}

- (UITextField *)emailTextField {
    if (!_emailTextField) {
        _emailTextField = [[UITextField alloc] init];
        _emailTextField.delegate = self;
        _emailTextField.keyboardType = UIKeyboardTypeEmailAddress;
        _emailTextField.autocapitalizationType = UITextAutocapitalizationTypeNone;
        _emailTextField.autocorrectionType = UITextAutocorrectionTypeNo;
        _emailTextField.clearButtonMode = UITextFieldViewModeWhileEditing;
        _emailTextField.textColor = [UIColor colorWithHex:KBBlackValue];
        _emailTextField.font = [KBFont regular:14];
        _emailTextField.returnKeyType = UIReturnKeyNext;
        
        NSString *ph = KBLocalized(@"Please Enter Your Email Address");
        _emailTextField.attributedPlaceholder = [[NSAttributedString alloc] initWithString:ph
                                                                                attributes:@{
            NSForegroundColorAttributeName : [UIColor colorWithWhite:0.75 alpha:1.0],
            NSFontAttributeName : [KBFont regular:14]
        }];
    }
    return _emailTextField;
}

- (UIView *)passwordFieldContainer {
    if (!_passwordFieldContainer) {
        _passwordFieldContainer = [UIView new];
        _passwordFieldContainer.backgroundColor = [UIColor colorWithHex:0xF7F7F7];
        _passwordFieldContainer.layer.cornerRadius = 10.0;
        _passwordFieldContainer.layer.masksToBounds = YES;
    }
    return _passwordFieldContainer;
}

- (UITextField *)passwordTextField {
    if (!_passwordTextField) {
        _passwordTextField = [[UITextField alloc] init];
        _passwordTextField.delegate = self;
        _passwordTextField.secureTextEntry = YES;
        _passwordTextField.textColor = [UIColor colorWithHex:KBBlackValue];
        _passwordTextField.font = [KBFont regular:14];
        _passwordTextField.returnKeyType = UIReturnKeyDone;
        
        NSString *ph = KBLocalized(@"Please Enter The Password");
        _passwordTextField.attributedPlaceholder = [[NSAttributedString alloc] initWithString:ph
                                                                                   attributes:@{
            NSForegroundColorAttributeName : [UIColor colorWithWhite:0.75 alpha:1.0],
            NSFontAttributeName : [KBFont regular:14]
        }];
    }
    return _passwordTextField;
}

- (UIButton *)passwordToggleButton {
    if (!_passwordToggleButton) {
        _passwordToggleButton = [UIButton buttonWithType:UIButtonTypeCustom];
        UIImage *eye = [UIImage imageNamed:@"login_eye_icon"];
        UIImage *eyeSlash = [UIImage imageNamed:@"login_eyeslash_icon"];
        [_passwordToggleButton setImage:eye forState:UIControlStateNormal];
        [_passwordToggleButton setImage:eyeSlash forState:UIControlStateSelected];
        [_passwordToggleButton addTarget:self
                                  action:@selector(onTapTogglePassword:)
                        forControlEvents:UIControlEventTouchUpInside];
    }
    return _passwordToggleButton;
}

- (UIButton *)forgotPasswordButton {
    if (!_forgotPasswordButton) {
        _forgotPasswordButton = [UIButton buttonWithType:UIButtonTypeCustom];
        [_forgotPasswordButton setTitle:KBLocalized(@"Forgot Password?") forState:UIControlStateNormal];
        [_forgotPasswordButton setTitleColor:[UIColor colorWithHex:KBColorValue] forState:UIControlStateNormal];
        _forgotPasswordButton.titleLabel.font = [KBFont regular:10];
        [_forgotPasswordButton addTarget:self
                                  action:@selector(onTapForgotPassword)
                        forControlEvents:UIControlEventTouchUpInside];
    }
    return _forgotPasswordButton;
}

- (UIButton *)submitButton {
    if (!_submitButton) {
        _submitButton = [UIButton buttonWithType:UIButtonTypeCustom];
        [_submitButton setTitle:KBLocalized(@"Login") forState:UIControlStateNormal];
        [_submitButton setTitleColor:[UIColor whiteColor] forState:UIControlStateNormal];
        _submitButton.titleLabel.font = [KBFont medium:16];
        _submitButton.backgroundColor = [UIColor colorWithHex:KBColorValue];
        _submitButton.layer.cornerRadius = 11.0;
        _submitButton.layer.masksToBounds = YES;
        [_submitButton addTarget:self
                          action:@selector(onTapSubmit)
                forControlEvents:UIControlEventTouchUpInside];
    }
    return _submitButton;
}

- (UITextView *)agreementTextView {
    if (!_agreementTextView) {
        _agreementTextView = [UITextView new];
        _agreementTextView.backgroundColor = [UIColor clearColor];
        _agreementTextView.editable = NO;
        _agreementTextView.selectable = NO;
        _agreementTextView.scrollEnabled = NO;
        _agreementTextView.textAlignment = NSTextAlignmentCenter;
        _agreementTextView.textContainerInset = UIEdgeInsetsZero;
        _agreementTextView.textContainer.lineFragmentPadding = 0;

        NSString *fullText = @"By continuing, you agree to our terms of service and confirm that you have read our privacy policy";
        NSString *termsText = @"terms of service";
        NSString *privacyText = @"privacy policy";

        NSMutableParagraphStyle *paragraph = [[NSMutableParagraphStyle alloc] init];
        paragraph.alignment = NSTextAlignmentCenter;

        NSMutableAttributedString *attr = [[NSMutableAttributedString alloc] initWithString:fullText
                                                                                 attributes:@{
            NSFontAttributeName : [KBFont regular:10],
            NSForegroundColorAttributeName : [UIColor colorWithHex:0x717171],
            NSParagraphStyleAttributeName : paragraph
        }];

        NSString *lowerFull = fullText.lowercaseString;
        NSRange termsRange = [lowerFull rangeOfString:termsText.lowercaseString];
        if (termsRange.location != NSNotFound) {
            [attr addAttributes:@{
                NSForegroundColorAttributeName : [UIColor colorWithHex:KBBlackValue],
                NSUnderlineStyleAttributeName : @(NSUnderlineStyleNone)
            } range:termsRange];
        }

        NSRange privacyRange = [lowerFull rangeOfString:privacyText.lowercaseString];
        if (privacyRange.location != NSNotFound) {
            [attr addAttributes:@{
                NSForegroundColorAttributeName : [UIColor colorWithHex:KBBlackValue],
                NSUnderlineStyleAttributeName : @(NSUnderlineStyleNone)
            } range:privacyRange];
        }

        _agreementTextView.linkTextAttributes = @{
            NSForegroundColorAttributeName : [UIColor colorWithHex:KBBlackValue],
            NSUnderlineStyleAttributeName : @(NSUnderlineStyleNone)
        };
        _agreementTextView.attributedText = attr;

        UITapGestureRecognizer *tap = [[UITapGestureRecognizer alloc] initWithTarget:self
                                                                              action:@selector(kb_handleAgreementTap:)];
        _agreementTextView.userInteractionEnabled = YES;
        [_agreementTextView addGestureRecognizer:tap];
    }
    return _agreementTextView;
}

- (UILabel *)accountTipLabel {
    if (!_accountTipLabel) {
        _accountTipLabel = [UILabel new];
        _accountTipLabel.text = KBLocalized(@"Don't Have An Account?");
        _accountTipLabel.font = [KBFont regular:10];
        _accountTipLabel.textColor = [UIColor colorWithHex:KBBlackValue];
    }
    return _accountTipLabel;
}

- (UIButton *)signUpButton {
    if (!_signUpButton) {
        _signUpButton = [UIButton buttonWithType:UIButtonTypeCustom];
        [_signUpButton setTitle:KBLocalized(@"Sign Up") forState:UIControlStateNormal];
        [_signUpButton setTitleColor:[UIColor colorWithHex:KBColorValue] forState:UIControlStateNormal];
        _signUpButton.titleLabel.font = [KBFont medium:10];
        [_signUpButton addTarget:self
                          action:@selector(onTapSignUp)
                forControlEvents:UIControlEventTouchUpInside];
    }
    return _signUpButton;
}

@end