//
//  PopupView.m
//  AIIM
//
//  Created by qitewei on 2025/5/29.
//

#import "PopupView.h"

@interface PopupView ()

@property (nonatomic, strong) UIControl *backgroundControl;
@property (nonatomic, weak) UIView *containerView;
@property (nonatomic, assign) BOOL showing;

@end

@implementation PopupView

- (instancetype)init {
    self = [super init];
    if (self) {
        [self commonInit];
    }
    return self;
}

- (instancetype)initWithFrame:(CGRect)frame {
    self = [super initWithFrame:frame];
    if (self) {
        [self commonInit];
    }
    return self;
}

- (void)commonInit {
    _position = PopupPositionCenter;
    _animationType = PopupAnimationTypeFromBottom;
    _dismissOnBackgroundTap = YES;
    _offset = 0;
    _containerType = PopupContainerTypeView;
    _backgroundColor = [UIColor colorWithWhite:0 alpha:0.5];
    
    _backgroundControl = [[UIControl alloc] init];
    _backgroundControl.backgroundColor = _backgroundColor;
    [_backgroundControl addTarget:self action:@selector(backgroundTapped) forControlEvents:UIControlEventTouchUpInside];
    [self addSubview:_backgroundControl];
}

- (void)layoutSubviews {
    [super layoutSubviews];
    _backgroundControl.frame = self.bounds;
    
    if (_customView) {
        CGRect frame = _customView.frame;
        
        switch (_position) {
            case PopupPositionTop:
                frame.origin.y = _offset;
                break;
            case PopupPositionCenter:
                frame.origin.y = (self.bounds.size.height - frame.size.height) / 2 + _offset;
                break;
            case PopupPositionBottom:
                frame.origin.y = self.bounds.size.height - frame.size.height + _offset;
                break;
        }
        
        frame.origin.x = (self.bounds.size.width - frame.size.width) / 2;
        _customView.frame = frame;
    }
}

#pragma mark - Public Methods

- (void)showInView:(UIView *)view {
    if (_showing) return;
    
    // 确定容器视图
    if (_containerType == PopupContainerTypeWindow) {
        _containerView = [UIApplication sharedApplication].delegate.window;
    } else {
        _containerView = view;
    }
    
    if (!_containerView) {
        NSLog(@"Error: No container view available");
        return;
    }
    
    // 设置frame
    self.frame = _containerView.bounds;
    _backgroundControl.frame = self.bounds;
    _backgroundControl.backgroundColor = _backgroundColor;
    
    // 添加自定义视图
    if (_customView) {
        [self addSubview:_customView];
        [self setNeedsLayout];
    }
    
    // 添加到容器
    [_containerView addSubview:self];
    
    // 初始状态
    CGFloat startAlpha = 0;
    CGRect finalFrame = _customView.frame;
    CGRect startFrame = finalFrame;
    
    switch (_animationType) {
        case PopupAnimationTypeFromBottom:
            startFrame.origin.y = self.bounds.size.height;
            break;
        case PopupAnimationTypeFromTop:
            startFrame.origin.y = -startFrame.size.height;
            break;
        case PopupAnimationTypeFade:
            startAlpha = 0;
            break;
    }
    
    _customView.frame = startFrame;
    _customView.alpha = startAlpha;
    self.alpha = 0;
    
    // 执行动画
    [UIView animateWithDuration:0.3 animations:^{
        self.alpha = 1;
        self.customView.alpha = 1;
        self.customView.frame = finalFrame;
    } completion:^(BOOL finished) {
        self.showing = YES;
    }];
}

- (void)dismiss {
    if (!_showing) return;
    
    CGRect endFrame = _customView.frame;
    CGFloat endAlpha = 0;
    
    // 根据动画类型设置结束状态
    switch (_animationType) {
        case PopupAnimationTypeFromBottom:
            endFrame.origin.y = self.bounds.size.height;
            break;
        case PopupAnimationTypeFromTop:
            endFrame.origin.y = -endFrame.size.height;
            break;
        case PopupAnimationTypeFade:
            // 淡出只需要改变alpha
            break;
    }
    
    [UIView animateWithDuration:0.3 animations:^{
        if (self.animationType != PopupAnimationTypeFade) {
            self.customView.frame = endFrame;
        }else{
            self.customView.alpha = endAlpha;
        }
        self.alpha = 0;
    } completion:^(BOOL finished) {
        [self.customView removeFromSuperview];
        [self removeFromSuperview];
        self.showing = NO;
        
        if (self.dismissCompletion) {
            self.dismissCompletion();
        }
    }];
}

- (void)backgroundTapped {
    if (_dismissOnBackgroundTap) {
        [self dismiss];
    }
}

#pragma mark - Setters

- (void)setCustomView:(UIView *)customView {
    if (_customView != customView) {
        [_customView removeFromSuperview];
        _customView = customView;
        [self addSubview:_customView];
        [self setNeedsLayout];
    }
}

- (void)setBackgroundColor:(UIColor *)backgroundColor {
    _backgroundColor = backgroundColor;
    _backgroundControl.backgroundColor = backgroundColor;
}

@end