//
//  SCPlayerConfigView.m
//  SellyCloudSDK_Example
//
//  Created by Caleb on 16/12/25.
//  Copyright © 2025 Caleb. All rights reserved.
//

#import "SCPlayerConfigView.h"
#import <Masonry/Masonry.h>

// 配置保存的 key
static NSString * const kSCPlayerConfigProtocol = @"SCPlayerConfigProtocol";
static NSString * const kSCPlayerConfigStreamId = @"SCPlayerConfigStreamId";

@implementation SCPlayerConfig

- (void)saveToUserDefaults {
    NSUserDefaults *defaults = [NSUserDefaults standardUserDefaults];
    [defaults setInteger:self.protocol forKey:kSCPlayerConfigProtocol];
    if (self.streamId) {
        [defaults setObject:self.streamId forKey:kSCPlayerConfigStreamId];
    }
    [defaults synchronize];
}

+ (instancetype)loadFromUserDefaults {
    NSUserDefaults *defaults = [NSUserDefaults standardUserDefaults];
    
    SCPlayerConfig *config = [[SCPlayerConfig alloc] init];
    
    // 加载协议，默认为 RTMP
    if ([defaults objectForKey:kSCPlayerConfigProtocol]) {
        config.protocol = [defaults integerForKey:kSCPlayerConfigProtocol];
    } else {
        config.protocol = SellyLiveMode_RTMP;
    }
    
    // 加载 streamId
    NSString *streamId = [defaults objectForKey:kSCPlayerConfigStreamId];
    config.streamId = streamId ? streamId : @"test";
    
    return config;
}

@end

@interface SCPlayerConfigView () <UITextFieldDelegate>
@property (nonatomic, strong) UIView *contentView;
@property (nonatomic, strong) UIVisualEffectView *backgroundView;
@property (nonatomic, strong) UISegmentedControl *protocolSegment;
@property (nonatomic, strong) UITextField *streamIdField;
@property (nonatomic, strong) UIButton *playButton;
@property (nonatomic, copy) void(^callback)(SCPlayerConfig *config);
@property (nonatomic, strong) MASConstraint *backgroundViewCenterYConstraint; // 保存约束引用
@end

@implementation SCPlayerConfigView

- (instancetype)init {
    self = [super init];
    if (self) {
        [self setupView];
        [self loadSavedConfig];
        [self registerKeyboardNotifications];
    }
    return self;
}

- (void)dealloc {
    [[NSNotificationCenter defaultCenter] removeObserver:self];
}

- (void)setupView {
    self.backgroundColor = [[UIColor blackColor] colorWithAlphaComponent:0.5];
    
    // 添加点击手势 - 点击背景关闭
    UITapGestureRecognizer *tapGesture = [[UITapGestureRecognizer alloc] initWithTarget:self action:@selector(backgroundTapped:)];
    tapGesture.cancelsTouchesInView = NO; // 不阻止子视图的点击事件
    [self addGestureRecognizer:tapGesture];
    
    // 背景模糊效果
    UIBlurEffect *blurEffect = [UIBlurEffect effectWithStyle:UIBlurEffectStyleSystemMaterial];
    _backgroundView = [[UIVisualEffectView alloc] initWithEffect:blurEffect];
    _backgroundView.layer.cornerRadius = 16;
    _backgroundView.layer.masksToBounds = YES;
    _backgroundView.userInteractionEnabled = YES; // 确保内容区域可以响应事件
    [self addSubview:_backgroundView];
    
    [_backgroundView mas_makeConstraints:^(MASConstraintMaker *make) {
        // 不完全居中，稍微向下偏移，避开顶部的关闭按钮
        make.centerX.equalTo(self);
        // 保存 centerY 约束的引用，以便在键盘出现时调整
        self.backgroundViewCenterYConstraint = make.centerY.equalTo(self).offset(30); // 向下偏移30pt
        make.left.offset(40);
        make.right.offset(-40);
    }];
    
    // 内容容器
    _contentView = [[UIView alloc] init];
    [_backgroundView.contentView addSubview:_contentView];
    [_contentView mas_makeConstraints:^(MASConstraintMaker *make) {
        make.edges.equalTo(_backgroundView.contentView).insets(UIEdgeInsetsMake(24, 24, 24, 24));
    }];
    
    // 标题
    UILabel *titleLabel = [[UILabel alloc] init];
    titleLabel.text = @"播放配置";
    titleLabel.font = [UIFont systemFontOfSize:22 weight:UIFontWeightBold];
    titleLabel.textAlignment = NSTextAlignmentCenter;
    [_contentView addSubview:titleLabel];
    [titleLabel mas_makeConstraints:^(MASConstraintMaker *make) {
        make.top.equalTo(_contentView);
        make.left.right.equalTo(_contentView);
        make.height.offset(30);
    }];
    
    // 协议选择标签
    UILabel *protocolLabel = [[UILabel alloc] init];
    protocolLabel.text = @"播放协议";
    protocolLabel.font = [UIFont systemFontOfSize:16 weight:UIFontWeightMedium];
    [_contentView addSubview:protocolLabel];
    [protocolLabel mas_makeConstraints:^(MASConstraintMaker *make) {
        make.top.equalTo(titleLabel.mas_bottom).offset(24);
        make.left.equalTo(_contentView);
        make.height.offset(22);
    }];
    
    // 协议选择器
    _protocolSegment = [[UISegmentedControl alloc] initWithItems:@[@"RTMP", @"RTC"]];
    _protocolSegment.selectedSegmentIndex = 0;
    [_contentView addSubview:_protocolSegment];
    [_protocolSegment mas_makeConstraints:^(MASConstraintMaker *make) {
        make.top.equalTo(protocolLabel.mas_bottom).offset(8);
        make.left.right.equalTo(_contentView);
        make.height.offset(36);
    }];
    
    // Stream ID 标签
    UILabel *streamIdLabel = [[UILabel alloc] init];
    streamIdLabel.text = @"Stream ID / URL。请输入 Stream ID 或完整 URL";
    streamIdLabel.font = [UIFont systemFontOfSize:14];
    streamIdLabel.numberOfLines = 0;
    [_contentView addSubview:streamIdLabel];
    [streamIdLabel mas_makeConstraints:^(MASConstraintMaker *make) {
        make.top.equalTo(_protocolSegment.mas_bottom).offset(24);
        make.left.equalTo(_contentView);
        make.right.equalTo(_contentView);
        make.height.offset(34);
    }];
    
    // Stream ID 输入框
    _streamIdField = [[UITextField alloc] init];
    _streamIdField.placeholder = @"请输入 Stream ID 或完整 URL";
    _streamIdField.borderStyle = UITextBorderStyleRoundedRect;
    _streamIdField.font = [UIFont systemFontOfSize:15];
    _streamIdField.clearButtonMode = UITextFieldViewModeWhileEditing;
    _streamIdField.returnKeyType = UIReturnKeyDone;
    _streamIdField.delegate = self;
    
    // 禁用首字母自动大写
    _streamIdField.autocapitalizationType = UITextAutocapitalizationTypeNone;
    // 禁用自动更正
    _streamIdField.autocorrectionType = UITextAutocorrectionTypeNo;
    // 设置键盘类型为 URL 类型（更适合输入 URL）
    _streamIdField.keyboardType = UIKeyboardTypeURL;
    
    [_contentView addSubview:_streamIdField];
    [_streamIdField mas_makeConstraints:^(MASConstraintMaker *make) {
        make.top.equalTo(streamIdLabel.mas_bottom).offset(8);
        make.left.right.equalTo(_contentView);
        make.height.offset(44);
    }];
    
    // 播放按钮
    _playButton = [UIButton buttonWithType:UIButtonTypeSystem];
    [_playButton setTitle:@"开始播放" forState:UIControlStateNormal];
    _playButton.titleLabel.font = [UIFont systemFontOfSize:18 weight:UIFontWeightBold];
    _playButton.backgroundColor = [UIColor systemBlueColor];
    [_playButton setTitleColor:[UIColor whiteColor] forState:UIControlStateNormal];
    _playButton.layer.cornerRadius = 12;
    _playButton.layer.masksToBounds = YES;
    [_playButton addTarget:self action:@selector(playButtonTapped) forControlEvents:UIControlEventTouchUpInside];
    [_contentView addSubview:_playButton];
    [_playButton mas_makeConstraints:^(MASConstraintMaker *make) {
        make.top.equalTo(_streamIdField.mas_bottom).offset(32);
        make.left.right.equalTo(_contentView);
        make.height.offset(50);
        make.bottom.equalTo(_contentView);
    }];
    
    // 移除点击背景关闭的手势，只能通过播放按钮关闭
}

- (void)playButtonTapped {
    NSString *streamId = [_streamIdField.text stringByTrimmingCharactersInSet:[NSCharacterSet whitespaceAndNewlineCharacterSet]];
    
    if (streamId.length == 0) {
        // 显示提示
        [self showAlertWithMessage:@"请输入 Stream ID 或 URL"];
        return;
    }
    
    SCPlayerConfig *config = [[SCPlayerConfig alloc] init];
    config.protocol = _protocolSegment.selectedSegmentIndex == 0 ? SellyLiveMode_RTMP : SellyLiveMode_RTC;
    config.streamId = streamId;
    
    // 保存配置
    [config saveToUserDefaults];
    
    if (self.callback) {
        self.callback(config);
    }
    
    [self dismiss];
}

- (void)showAlertWithMessage:(NSString *)message {
    UIAlertController *alert = [UIAlertController alertControllerWithTitle:@"提示"
                                                                   message:message
                                                            preferredStyle:UIAlertControllerStyleAlert];
    [alert addAction:[UIAlertAction actionWithTitle:@"确定" style:UIAlertActionStyleDefault handler:nil]];
    
    // 获取当前的 viewController
    UIViewController *topVC = [self topViewController];
    if (topVC) {
        [topVC presentViewController:alert animated:YES completion:nil];
    }
}

- (UIViewController *)topViewController {
    UIViewController *topVC = nil;
    UIWindow *keyWindow = nil;
    
    // iOS 13+ 获取 keyWindow
    if (@available(iOS 13.0, *)) {
        NSSet<UIScene *> *scenes = [UIApplication sharedApplication].connectedScenes;
        for (UIScene *scene in scenes) {
            if ([scene isKindOfClass:[UIWindowScene class]]) {
                UIWindowScene *windowScene = (UIWindowScene *)scene;
                for (UIWindow *window in windowScene.windows) {
                    if (window.isKeyWindow) {
                        keyWindow = window;
                        break;
                    }
                }
            }
            if (keyWindow) break;
        }
    } else {
        keyWindow = [UIApplication sharedApplication].keyWindow;
    }
    
    topVC = keyWindow.rootViewController;
    while (topVC.presentedViewController) {
        topVC = topVC.presentedViewController;
    }
    return topVC;
}

- (void)showInViewController:(UIViewController *)viewController callback:(void (^)(SCPlayerConfig * _Nonnull))callback {
    self.callback = callback;
    
    // 直接添加到 viewController 的 view 上，而不是 window
    self.frame = viewController.view.bounds;
    [viewController.view addSubview:self];
    
    // 动画显示
    self.alpha = 0;
    _backgroundView.transform = CGAffineTransformMakeScale(0.8, 0.8);
    
    [UIView animateWithDuration:0.3 delay:0 usingSpringWithDamping:0.8 initialSpringVelocity:0.5 options:UIViewAnimationOptionCurveEaseOut animations:^{
        self.alpha = 1;
        self.backgroundView.transform = CGAffineTransformIdentity;
    } completion:nil];
}

- (void)dismiss {
    [UIView animateWithDuration:0.2 animations:^{
        self.alpha = 0;
        self.backgroundView.transform = CGAffineTransformMakeScale(0.8, 0.8);
    } completion:^(BOOL finished) {
        [self removeFromSuperview];
    }];
}

// 背景点击处理
- (void)backgroundTapped:(UITapGestureRecognizer *)gesture {
    CGPoint location = [gesture locationInView:self];
    
    // 判断点击位置是否在内容区域内
    if (!CGRectContainsPoint(_backgroundView.frame, location)) {
        // 点击了背景区域，关闭弹窗
        NSLog(@"📱 点击背景关闭配置弹窗");
        [self dismiss];
    }
}

- (void)loadSavedConfig {
    SCPlayerConfig *savedConfig = [SCPlayerConfig loadFromUserDefaults];
    
    // 设置协议选择器
    _protocolSegment.selectedSegmentIndex = (savedConfig.protocol == SellyLiveMode_RTMP) ? 0 : 1;
    
    // 设置 streamId
    if (savedConfig.streamId && savedConfig.streamId.length > 0) {
        _streamIdField.text = savedConfig.streamId;
    }
}

#pragma mark - UITextFieldDelegate

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

#pragma mark - Keyboard Notifications

- (void)registerKeyboardNotifications {
    [[NSNotificationCenter defaultCenter] addObserver:self
                                             selector:@selector(keyboardWillShow:)
                                                 name:UIKeyboardWillShowNotification
                                               object:nil];
    
    [[NSNotificationCenter defaultCenter] addObserver:self
                                             selector:@selector(keyboardWillHide:)
                                                 name:UIKeyboardWillHideNotification
                                               object:nil];
}

- (void)keyboardWillShow:(NSNotification *)notification {
    NSDictionary *userInfo = notification.userInfo;
    
    // 获取键盘高度
    CGRect keyboardFrame = [userInfo[UIKeyboardFrameEndUserInfoKey] CGRectValue];
    CGFloat keyboardHeight = keyboardFrame.size.height;
    
    // 获取动画时长和曲线
    NSTimeInterval duration = [userInfo[UIKeyboardAnimationDurationUserInfoKey] doubleValue];
    UIViewAnimationCurve curve = [userInfo[UIKeyboardAnimationCurveUserInfoKey] integerValue];
    
    // 计算输入框在屏幕上的位置
    CGRect textFieldFrame = [_streamIdField convertRect:_streamIdField.bounds toView:self];
    CGFloat textFieldBottom = CGRectGetMaxY(textFieldFrame);
    
    // 计算需要的偏移量
    CGFloat visibleHeight = self.bounds.size.height - keyboardHeight;
    
    // 给输入框下方留出一些空间（比如 20pt）
    CGFloat desiredSpace = 20;
    CGFloat offset = 0;
    
    if (textFieldBottom + desiredSpace > visibleHeight) {
        // 输入框被键盘遮挡了，需要向上移动
        offset = -(textFieldBottom + desiredSpace - visibleHeight);
    }
    
    // 更新约束
    [self.backgroundViewCenterYConstraint setOffset:offset];
    
    // 动画更新布局
    [UIView animateWithDuration:duration delay:0 options:(curve << 16) animations:^{
        [self layoutIfNeeded];
    } completion:nil];
}

- (void)keyboardWillHide:(NSNotification *)notification {
    NSDictionary *userInfo = notification.userInfo;
    
    // 获取动画时长和曲线
    NSTimeInterval duration = [userInfo[UIKeyboardAnimationDurationUserInfoKey] doubleValue];
    UIViewAnimationCurve curve = [userInfo[UIKeyboardAnimationCurveUserInfoKey] integerValue];
    
    // 恢复原始位置
    [self.backgroundViewCenterYConstraint setOffset:30];
    
    // 动画更新布局
    [UIView animateWithDuration:duration delay:0 options:(curve << 16) animations:^{
        [self layoutIfNeeded];
    } completion:nil];
}

@end