//
//  KBFunctionBarView.m
//  CustomKeyboard
//
//  Created by Mac on 2025/10/28.
//  功能 - barview

#import "KBFunctionBarView.h"
#import "Masonry.h"
#import "KBResponderUtils.h" // 查找 UIInputViewController，用于系统切换输入法

@interface KBFunctionBarView ()
@property (nonatomic, strong) UIView *leftContainer;   // 左侧按钮容器
@property (nonatomic, strong) UIView *rightContainer;  // 右侧按钮容器
@property (nonatomic, strong) NSArray<UIButton *> *leftButtonsInternal;
@property (nonatomic, strong) NSArray<UIButton *> *rightButtonsInternal;
@property (nonatomic, strong) UIButton *globeButtonInternal;    // 可选：系统“切换输入法”键
@end

@implementation KBFunctionBarView

- (instancetype)initWithFrame:(CGRect)frame{
    if (self = [super initWithFrame:frame]) {
        self.backgroundColor = [UIColor clearColor];
        // 标题字段暂时不用，预留给后续可能的文案按钮
        _leftTitles = @[];
        _rightTitles = @[];
        [self buildUI];
    }
    return self;
}

#pragma mark - Public

- (NSArray<UIButton *> *)leftButtons { return self.leftButtonsInternal; }
- (NSArray<UIButton *> *)rightButtons { return self.rightButtonsInternal; }


#pragma mark - UI

- (void)buildUI {
    // 左右容器 + 可选地球键
    [self addSubview:self.globeButtonInternal];
    [self addSubview:self.leftContainer];
    [self addSubview:self.rightContainer];

    // 右侧：升级 VIP 按钮（使用资源图 upgrad_vip_icon，设计尺寸 115x35）
    [self.rightContainer mas_makeConstraints:^(MASConstraintMaker *make) {
        make.right.equalTo(self.mas_right).offset(-6);
        make.centerY.equalTo(self.mas_centerY);
        make.width.mas_equalTo(115);
        make.height.mas_equalTo(35);
    }];

    UIButton *vipButton = [UIButton buttonWithType:UIButtonTypeCustom];
    vipButton.tag = 200; // 右侧 index = 0
    UIImage *vipImage = [UIImage imageNamed:@"upgrad_vip_icon"];
    [vipButton setImage:vipImage forState:UIControlStateNormal];
    vipButton.imageView.contentMode = UIViewContentModeScaleAspectFit;
    vipButton.adjustsImageWhenHighlighted = YES;
    [vipButton addTarget:self action:@selector(onRightTap:) forControlEvents:UIControlEventTouchUpInside];
    [self.rightContainer addSubview:vipButton];
    [vipButton mas_makeConstraints:^(MASConstraintMaker *make) {
        make.edges.equalTo(self.rightContainer);
    }];
    self.rightButtonsInternal = @[vipButton];

    // 左侧地球键（按需显示，由 kb_refreshGlobeVisibility 控制是否展示）
    [self.globeButtonInternal mas_makeConstraints:^(MASConstraintMaker *make) {
        make.left.equalTo(self.mas_left).offset(12);
        make.centerY.equalTo(self.mas_centerY);
        make.width.height.mas_equalTo(32);
    }];

    // 左侧：App 图标按钮（使用资源图 App_icon，图标 34x34，按钮容器 36x36）
    [self.leftContainer mas_makeConstraints:^(MASConstraintMaker *make) {
        make.centerY.equalTo(self.mas_centerY);
        make.width.mas_equalTo(36);
        make.height.mas_equalTo(36);
        make.left.equalTo(self.mas_left).offset(12); // 具体偏移在 kb_refreshGlobeVisibility 中会根据地球键重新设置
    }];

    UIButton *appButton = [UIButton buttonWithType:UIButtonTypeCustom];
    appButton.tag = 100; // 左侧 index = 0
    UIImage *appImage = [UIImage imageNamed:@"App_icon"];
    [appButton setImage:appImage forState:UIControlStateNormal];
    appButton.imageView.contentMode = UIViewContentModeScaleAspectFit;
    appButton.adjustsImageWhenHighlighted = YES;
    [appButton addTarget:self action:@selector(onLeftTap:) forControlEvents:UIControlEventTouchUpInside];
    [self.leftContainer addSubview:appButton];
    [appButton mas_makeConstraints:^(MASConstraintMaker *make) {
        make.center.equalTo(self.leftContainer);
        make.width.height.mas_equalTo(34); // 设计图尺寸
    }];
    self.leftButtonsInternal = @[appButton];

    // 初始刷新地球键可见性与事件绑定
    [self kb_refreshGlobeVisibility];
}

#pragma mark - Actions

- (void)onLeftTap:(UIButton *)sender {
    NSInteger idx = sender.tag - 100;
    if ([self.delegate respondsToSelector:@selector(functionBarView:didTapLeftAtIndex:)]) {
        [self.delegate functionBarView:self didTapLeftAtIndex:idx];
    }
}

- (void)onRightTap:(UIButton *)sender {
    NSInteger idx = sender.tag - 200;
    if ([self.delegate respondsToSelector:@selector(functionBarView:didTapRightAtIndex:)]) {
        [self.delegate functionBarView:self didTapRightAtIndex:idx];
    }
}

#pragma mark - Lazy

- (UIView *)leftContainer {
    if (!_leftContainer) {
        _leftContainer = [[UIView alloc] init];
    }
    return _leftContainer;
}

- (UIView *)rightContainer {
    if (!_rightContainer) {
        _rightContainer = [[UIView alloc] init];
    }
    return _rightContainer;
}

- (UIButton *)globeButtonInternal {
    if (!_globeButtonInternal) {
        _globeButtonInternal = [UIButton buttonWithType:UIButtonTypeSystem];
        _globeButtonInternal.layer.cornerRadius = 16;
        _globeButtonInternal.layer.masksToBounds = YES;
        _globeButtonInternal.backgroundColor = [UIColor colorWithWhite:1 alpha:0.9];
        [_globeButtonInternal setTitle:@"🌐" forState:UIControlStateNormal];
        [_globeButtonInternal setTitleColor:[UIColor blackColor] forState:UIControlStateNormal];
    }
    return _globeButtonInternal;
}

#pragma mark - Globe (Input Mode Switch)

- (void)kb_refreshGlobeVisibility {
    UIInputViewController *ivc = KBFindInputViewController(self);
    BOOL needSwitchKey = YES;
    if (ivc && [ivc respondsToSelector:@selector(needsInputModeSwitchKey)]) {
        needSwitchKey = ivc.needsInputModeSwitchKey;
    }

    self.globeButtonInternal.hidden = !needSwitchKey;

    // 左容器左约束：根据是否显示地球键动态调整
    [self.leftContainer mas_remakeConstraints:^(MASConstraintMaker *make) {
        if (needSwitchKey) {
            make.left.equalTo(self.globeButtonInternal.mas_right).offset(8);
        } else {
            make.left.equalTo(self.mas_left).offset(12);
        }
        make.centerY.equalTo(self.mas_centerY);
        make.width.mas_equalTo(36);
        make.height.mas_equalTo(36);
    }];

    // 绑定系统输入法切换事件
    [self.globeButtonInternal removeTarget:nil action:NULL forControlEvents:UIControlEventAllEvents];
    if (needSwitchKey && ivc) {
        SEL sel = NSSelectorFromString(@"handleInputModeListFromView:withEvent:");
        if ([ivc respondsToSelector:sel]) {
            [self.globeButtonInternal addTarget:ivc action:sel forControlEvents:UIControlEventAllTouchEvents];
        } else {
            [self.globeButtonInternal addTarget:ivc action:@selector(advanceToNextInputMode) forControlEvents:UIControlEventTouchUpInside];
        }
    }
}

- (void)didMoveToWindow {
    [super didMoveToWindow];
    [self kb_refreshGlobeVisibility];
}

@end