keyboard/CustomKeyboard/View/KBKeyBoardMainView.m

//
//  KBKeyBoardMainView.m
//  CustomKeyboard
//
//  Created by Mac on 2025/10/28.
//

#import "KBKeyBoardMainView.h"
#import "KBToolBar.h"
#import "KBKeyboardView.h"
#import "KBFunctionView.h"
#import "KBKey.h"
#import "KBEmojiPanelView.h"
#import "KBSuggestionBarView.h"
#import "Masonry.h"
#import "KBSkinManager.h"
#import "KBBackspaceUndoManager.h"
#import "KBKeyboardLayoutConfig.h"

@interface KBKeyBoardMainView ()<KBToolBarDelegate, KBKeyboardViewDelegate, KBEmojiPanelViewDelegate, KBSuggestionBarViewDelegate>
@property (nonatomic, strong) KBToolBar *topBar;
@property (nonatomic, strong) KBSuggestionBarView *suggestionBar;
@property (nonatomic, strong) KBKeyboardView *keyboardView;
@property (nonatomic, strong) KBEmojiPanelView *emojiView;
@property (nonatomic, assign) BOOL emojiPanelVisible;
@property (nonatomic, assign) BOOL suggestionBarHasItems;
// 注意：功能面板的展示/隐藏由外部控制器决定，此处不再直接管理显隐
@end
@implementation KBKeyBoardMainView

- (instancetype)initWithFrame:(CGRect)frame {
    if (self = [super initWithFrame:frame]) {
//        self.backgroundColor = [KBSkinManager shared].current.keyboardBackground;
        self.backgroundColor = [UIColor colorWithHex:0xD1D3DB];

        // 顶部栏
        self.topBar = [[KBToolBar alloc] init];
        self.topBar.delegate = self;
        [self addSubview:self.topBar];

        // 联想栏
        self.suggestionBar = [[KBSuggestionBarView alloc] init];
        self.suggestionBar.delegate = self;
        self.suggestionBar.hidden = YES;
        [self addSubview:self.suggestionBar];

        // 键盘区域（高度按照设计值做等比缩放，避免不同机型上按键被压缩/拉伸）
        CGFloat keyboardAreaHeight = KBFit(200.0f);
        KBKeyboardLayoutConfig *layoutConfig = [KBKeyboardLayoutConfig sharedConfig];
        if (layoutConfig) {
            CGFloat configHeight = [layoutConfig keyboardAreaScaledHeight];
            if (configHeight > 0.0) {
                keyboardAreaHeight = configHeight;
            }
        }
        CGFloat bottomInset = KBFit(4.0f);
//        CGFloat topBarHeight = KBFit(40.0f);
        CGFloat barSpacing = KBFit(6.0f);

        self.keyboardView = [[KBKeyboardView alloc] init];
        self.keyboardView.delegate = self;
        [self addSubview:self.keyboardView];
        [self.keyboardView mas_makeConstraints:^(MASConstraintMaker *make) {
            make.left.right.equalTo(self);
            make.height.mas_equalTo(keyboardAreaHeight);
            make.bottom.equalTo(self.mas_bottom).offset(-bottomInset);
        }];

        self.emojiView = [[KBEmojiPanelView alloc] init];
        self.emojiView.hidden = YES;
        self.emojiView.alpha = 0.0;
        self.emojiView.delegate = self;
        [self addSubview:self.emojiView];
        [self.emojiView mas_makeConstraints:^(MASConstraintMaker *make) {
            make.edges.equalTo(self);
        }];

//        [self.topBar mas_makeConstraints:^(MASConstraintMaker *make) {
//            make.left.right.equalTo(self);
//            make.top.equalTo(self.mas_top).offset(0);
//            make.height.mas_equalTo(topBarHeight);
//        }];
        [self.topBar mas_makeConstraints:^(MASConstraintMaker *make) {
            make.left.right.equalTo(self);
            make.top.equalTo(self.mas_top).offset(0);
            make.bottom.equalTo(self.keyboardView.mas_top).offset(0);
        }];

        [self.suggestionBar mas_makeConstraints:^(MASConstraintMaker *make) {
            make.left.right.equalTo(self);
            make.top.equalTo(self.topBar);
            make.bottom.equalTo(self.topBar);
        }];

        [self.keyboardView mas_makeConstraints:^(MASConstraintMaker *make) {
            make.top.equalTo(self.topBar.mas_bottom).offset(barSpacing);
        }];
        // 功能面板切换交由外部控制器处理；此处不直接创建/管理
        [[NSNotificationCenter defaultCenter] addObserver:self
                                                 selector:@selector(kb_undoStateChanged)
                                                     name:KBBackspaceUndoStateDidChangeNotification
                                                   object:nil];
    }
    return self;
}

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

- (void)setEmojiPanelVisible:(BOOL)visible animated:(BOOL)animated {
    if (self.emojiPanelVisible == visible) return;
    self.emojiPanelVisible = visible;
    if (visible) {
        [self.emojiView reloadData];
        self.emojiView.hidden = NO;
        [self bringSubviewToFront:self.emojiView];
    } else {
        self.keyboardView.hidden = NO;
        self.topBar.hidden = NO;
        self.suggestionBar.hidden = !self.suggestionBarHasItems;
    }

    void (^changes)(void) = ^{
        self.emojiView.alpha = visible ? 1.0 : 0.0;
        self.keyboardView.alpha = visible ? 0.0 : 1.0;
        self.topBar.alpha = visible ? 0.0 : 1.0;
        self.suggestionBar.alpha = visible ? 0.0 : ([self kb_shouldShowSuggestions] ? 1.0 : 0.0);
    };
    void (^completion)(BOOL) = ^(BOOL finished) {
        self.emojiView.hidden = !visible;
        self.keyboardView.hidden = visible;
        self.topBar.hidden = visible;
        if (visible) {
            self.suggestionBar.hidden = YES;
        } else {
            self.suggestionBar.hidden = ![self kb_shouldShowSuggestions];
        }
    };

    if (animated) {
        [UIView animateWithDuration:0.22 delay:0 options:UIViewAnimationOptionCurveEaseInOut animations:changes completion:completion];
    } else {
        changes();
        completion(YES);
    }
}

- (void)toggleEmojiPanel {
    [self setEmojiPanelVisible:!self.emojiPanelVisible animated:YES];
}


#pragma mark - KBToolBarDelegate

- (void)toolBar:(KBToolBar *)toolBar didTapActionAtIndex:(NSInteger)index {
    // 将事件抛给外部控制器，由其决定是否切换到功能面板
    if ([self.delegate respondsToSelector:@selector(keyBoardMainView:didTapToolActionAtIndex:)]) {
        [self.delegate keyBoardMainView:self didTapToolActionAtIndex:index];
    }
}

- (void)toolBarDidTapSettings:(KBToolBar *)toolBar {
    if ([self.delegate respondsToSelector:@selector(keyBoardMainViewDidTapSettings:)]) {
        [self.delegate keyBoardMainViewDidTapSettings:self];
    }
}

- (void)toolBarDidTapUndo:(KBToolBar *)toolBar {
    if ([self.delegate respondsToSelector:@selector(keyBoardMainViewDidTapUndo:)]) {
        [self.delegate keyBoardMainViewDidTapUndo:self];
    }
}

#pragma mark - KBKeyboardViewDelegate

- (void)keyboardView:(KBKeyboardView *)keyboard didTapKey:(KBKey *)key {
    switch (key.type) {
        case KBKeyTypeCharacter:
            // 文本插入交由上层控制器处理
            if ([self.delegate respondsToSelector:@selector(keyBoardMainView:didTapKey:)]) {
                [self.delegate keyBoardMainView:self didTapKey:key];
            }
            break;
        case KBKeyTypeBackspace:
            if ([self.delegate respondsToSelector:@selector(keyBoardMainView:didTapKey:)]) {
                [self.delegate keyBoardMainView:self didTapKey:key];
            }
            break;
        case KBKeyTypeSpace:
            if ([self.delegate respondsToSelector:@selector(keyBoardMainView:didTapKey:)]) {
                [self.delegate keyBoardMainView:self didTapKey:key];
            }
            break;
        case KBKeyTypeReturn:
            if ([self.delegate respondsToSelector:@selector(keyBoardMainView:didTapKey:)]) {
                [self.delegate keyBoardMainView:self didTapKey:key];
            }
            break;
        case KBKeyTypeModeChange: {
            // 切换 字母 <-> 数字 布局
            keyboard.layoutStyle = (keyboard.layoutStyle == KBKeyboardLayoutStyleLetters) ? KBKeyboardLayoutStyleNumbers : KBKeyboardLayoutStyleLetters;
            [keyboard reloadKeys];
        } break;
        case KBKeyTypeGlobe:
            if ([self.delegate respondsToSelector:@selector(keyBoardMainView:didTapKey:)]) {
                [self.delegate keyBoardMainView:self didTapKey:key];
            }
            break;
        case KBKeyTypeCustom: {
            if ([key.identifier isEqualToString:KBKeyIdentifierEmojiPanel]) {
                [self toggleEmojiPanel];
                break;
            }
            if ([self.delegate respondsToSelector:@selector(keyBoardMainView:didTapKey:)]) {
                [self.delegate keyBoardMainView:self didTapKey:key];
            }
        } break;
        case KBKeyTypeShift:
            // Shift 已在 KBKeyboardView 内部处理
            break;
    }
}

// 切换功能面板交由外部控制器处理（此处不再实现）

// 设置页展示改由 KeyboardViewController 统一处理
#pragma mark - KBEmojiPanelViewDelegate

- (void)emojiPanelView:(KBEmojiPanelView *)panel didSelectEmoji:(NSString *)emoji {
    if (emoji.length == 0) return;
    if ([self.delegate respondsToSelector:@selector(keyBoardMainView:didSelectEmoji:)]) {
        [self.delegate keyBoardMainView:self didSelectEmoji:emoji];
    }
}

- (void)emojiPanelViewDidRequestClose:(KBEmojiPanelView *)panel {
    [self setEmojiPanelVisible:NO animated:YES];
}

- (void)emojiPanelViewDidTapSearch:(KBEmojiPanelView *)panel {
    if ([self.delegate respondsToSelector:@selector(keyBoardMainViewDidTapEmojiSearch:)]) {
        [self.delegate keyBoardMainViewDidTapEmojiSearch:self];
    }
}

- (void)emojiPanelViewDidTapDelete:(KBEmojiPanelView *)panel {
    if ([self.delegate respondsToSelector:@selector(keyBoardMainView:didTapKey:)]) {
        KBKey *backspace = [KBKey keyWithTitle:@"" type:KBKeyTypeBackspace];
        [self.delegate keyBoardMainView:self didTapKey:backspace];
    }
}

#pragma mark - Theme

- (void)kb_applyTheme {
    KBSkinManager *mgr = [KBSkinManager shared];
    self.backgroundColor = [UIColor clearColor];
    self.keyboardView.backgroundColor = [UIColor clearColor];
    if ([self.topBar respondsToSelector:@selector(kb_applyTheme)]) {
        [self.topBar kb_applyTheme];
    }
    [self.suggestionBar applyTheme:mgr.current];
    [self.keyboardView reloadKeys];
    if (self.emojiView) {
        [self.emojiView applyTheme:mgr.current];
    }
}

#pragma mark - Suggestions

- (void)kb_setSuggestions:(NSArray<NSString *> *)suggestions {
    self.suggestionBarHasItems = (suggestions.count > 0);
    [self.suggestionBar updateSuggestions:suggestions];
    [self kb_applySuggestionVisibility];
}

#pragma mark - KBSuggestionBarViewDelegate

- (void)suggestionBarView:(KBSuggestionBarView *)view didSelectSuggestion:(NSString *)suggestion {
    if ([self.delegate respondsToSelector:@selector(keyBoardMainView:didSelectSuggestion:)]) {
        [self.delegate keyBoardMainView:self didSelectSuggestion:suggestion];
    }
}

- (void)kb_undoStateChanged {
    [self kb_applySuggestionVisibility];
}

- (BOOL)kb_shouldShowSuggestions {
    if (self.emojiPanelVisible) { return NO; }
    if (![KBBackspaceUndoManager shared].hasUndo && self.suggestionBarHasItems) {
        return YES;
    }
    return NO;
}

- (void)kb_applySuggestionVisibility {
    BOOL shouldShow = [self kb_shouldShowSuggestions];
    self.suggestionBar.hidden = !shouldShow;
    self.suggestionBar.alpha = shouldShow ? 1.0 : 0.0;
}

@end