//
//  KBPersonaChatCell.m
//  keyBoard
//
//  Created by Kiro on 2026/1/26.
//

#import "KBPersonaChatCell.h"
#import "KBAiChatMessage.h"
#import "KBChatHistoryPageModel.h"
#import "AiVM.h"
#import "KBImagePositionButton.h"
#import "KBAICommentView.h"
#import "KBAIChatMessageCacheManager.h"
#import <Masonry/Masonry.h>
#import <SDWebImage/SDWebImage.h>
#import <LSTPopView/LSTPopView.h>
#import "AIPersonInfoVC.h"
/// 聊天会话被重置的通知
static NSString * const KBChatSessionDidResetNotification = @"KBChatSessionDidResetNotification";

@interface KBPersonaChatCell () <KBChatTableViewDelegate>

/// 背景图
@property (nonatomic, strong) UIImageView *backgroundImageView;

/// 头像
@property (nonatomic, strong) UIImageView *avatarImageView;

/// 人设名称
@property (nonatomic, strong) UILabel *nameLabel;

/// 开场白
@property (nonatomic, strong) UILabel *openingLabel;



/// 聊天消息
@property (nonatomic, strong) NSMutableArray<KBAiChatMessage *> *messages;

/// 是否已加载数据
@property (nonatomic, assign) BOOL hasLoadedData;

/// 是否正在加载
@property (nonatomic, assign) BOOL isLoading;

@property (nonatomic, assign) BOOL canTriggerLoadMore;

/// 当前页码
@property (nonatomic, assign) NSInteger currentPage;

/// 是否还有更多历史消息
@property (nonatomic, assign) BOOL hasMoreHistory;

/// AiVM 实例
@property (nonatomic, strong) AiVM *aiVM;

/// 评论按钮
@property (nonatomic, strong) KBImagePositionButton *commentButton;

/// 喜欢按钮
@property (nonatomic, strong) KBImagePositionButton *likeButton;

/// 评论弹窗
@property (nonatomic, weak) LSTPopView *popView;

@property (nonatomic, strong) NSMutableDictionary<NSString *, KBAiChatMessage *> *pendingAssistantMessages;

@property (nonatomic, assign) BOOL isCurrentPersonaCell;
@property (nonatomic, assign) BOOL shouldAutoPlayPrologueAudio;
@property (nonatomic, assign) BOOL hasPlayedPrologueAudio;

@end

@implementation KBPersonaChatCell

#pragma mark - Lifecycle

- (instancetype)initWithFrame:(CGRect)frame {
    if (self = [super initWithFrame:frame]) {
        [self setupUI];
        
        // 监听聊天会话重置通知
        [[NSNotificationCenter defaultCenter] addObserver:self
                                                 selector:@selector(handleChatSessionReset:)
                                                     name:KBChatSessionDidResetNotification
                                                   object:nil];
    }
    return self;
}

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

/// 关键修复：Cell 复用时不清空数据，避免重复请求
- (void)prepareForReuse {
    [super prepareForReuse];
    
    // 停止音频播放
    [self.chatView stopPlayingAudio];
    
    // 重置加载状态标志（但不清空 hasLoadedData）
    self.isLoading = NO;
    self.canTriggerLoadMore = YES;
    [self.pendingAssistantMessages removeAllObjects];
    self.isCurrentPersonaCell = NO;
    self.shouldAutoPlayPrologueAudio = NO;
    self.hasPlayedPrologueAudio = NO;
    
    // ✅ 移除了 self.hasLoadedData = NO;
    // 这样 Cell 复用时不会重复请求数据
}

#pragma mark - 1：控件初始化

- (void)setupUI {
    // 背景图
    [self.contentView addSubview:self.backgroundImageView];
    [self.backgroundImageView mas_makeConstraints:^(MASConstraintMaker *make) {
        make.edges.equalTo(self.contentView);
    }];
    
    // 半透明遮罩
    UIView *maskView = [[UIView alloc] init];
    maskView.backgroundColor = [[UIColor blackColor] colorWithAlphaComponent:0.3];
    [self.contentView addSubview:maskView];
    [maskView mas_makeConstraints:^(MASConstraintMaker *make) {
        make.edges.equalTo(self.contentView);
    }];
    
    // 开场白
    [self.contentView addSubview:self.openingLabel];
    [self.openingLabel mas_makeConstraints:^(MASConstraintMaker *make) {
        make.top.equalTo(self.contentView).offset(KB_NAV_TOTAL_HEIGHT);
        make.left.equalTo(self.contentView).offset(40);
        make.right.equalTo(self.contentView).offset(-40);
    }];
    
    // 头像
    [self.contentView addSubview:self.avatarImageView];
    [self.avatarImageView mas_makeConstraints:^(MASConstraintMaker *make) {
        make.bottom.equalTo(self.contentView).offset(-KB_TABBAR_HEIGHT - 50 - 20);
        make.left.equalTo(self.contentView).offset(20);
        make.size.mas_equalTo(CGSizeMake(54, 54));
    }];
    
    // 人设名称
    [self.contentView addSubview:self.nameLabel];
    [self.nameLabel mas_makeConstraints:^(MASConstraintMaker *make) {
        make.left.equalTo(self.avatarImageView.mas_right).offset(5);
        make.centerY.equalTo(self.avatarImageView);
    }];
    
    // 评论按钮（最右侧）
    [self.contentView addSubview:self.commentButton];
    [self.commentButton mas_makeConstraints:^(MASConstraintMaker *make) {
        make.right.equalTo(self.contentView).offset(-20);
        make.centerY.equalTo(self.avatarImageView);
        make.width.mas_equalTo(40);
        make.height.mas_equalTo(50);
    }];
    
    // 喜欢按钮（评论按钮左侧，间距20px）
    [self.contentView addSubview:self.likeButton];
    [self.likeButton mas_makeConstraints:^(MASConstraintMaker *make) {
        make.right.equalTo(self.commentButton.mas_left).offset(-20);
        make.centerY.equalTo(self.avatarImageView);
        make.width.mas_equalTo(40);
        make.height.mas_equalTo(50);
    }];
    
    // 聊天列表
    [self.contentView addSubview:self.chatView];
    [self.chatView mas_makeConstraints:^(MASConstraintMaker *make) {
        make.top.equalTo(self.contentView).offset(KB_NAV_TOTAL_HEIGHT);
        make.left.right.equalTo(self.contentView);
        make.bottom.equalTo(self.avatarImageView.mas_top).offset(-10);
    }];
    
}

#pragma mark - Setter

- (NSString *)currentPrologueText {
    if (self.persona.prologue.length > 0) {
        return self.persona.prologue;
    }
    return self.persona.introText ?: @"";
}

- (void)setPersona:(KBPersonaModel *)persona {
    _persona = persona;
    
    // 重置状态
    self.isLoading = NO;
    self.canTriggerLoadMore = YES;
    self.currentPage = 1;
    self.hasMoreHistory = YES;
    [self.pendingAssistantMessages removeAllObjects];
    self.isCurrentPersonaCell = NO;
    self.shouldAutoPlayPrologueAudio = NO;
    self.hasPlayedPrologueAudio = NO;
    
    // ⚠️ 临时禁用缓存，排查问题
    // NSArray *cachedMessages = [[KBAIChatMessageCacheManager shared] messagesForCompanionId:persona.personaId];
    // if (cachedMessages.count > 0) {
    //     self.messages = [cachedMessages mutableCopy];
    //     self.hasLoadedData = YES;
    //     NSLog(@"[Cell] ✅ 从缓存加载：personaId=%ld, 消息数=%ld", (long)persona.personaId, (long)cachedMessages.count);
    // } else {
        self.messages = [NSMutableArray array];
        self.hasLoadedData = NO;
        NSLog(@"[Cell] ⚠️ 缓存已禁用：personaId=%ld, 需要请求数据", (long)persona.personaId);
    // }
    
    // 设置 UI
    [self.backgroundImageView sd_setImageWithURL:[NSURL URLWithString:persona.coverImageUrl]
                                placeholderImage:[UIImage imageNamed:@"placeholder_bg"]];
    [self.avatarImageView sd_setImageWithURL:[NSURL URLWithString:persona.avatarUrl]
                            placeholderImage:[UIImage imageNamed:@"placeholder_avatar"]];
    self.nameLabel.text = persona.name;
    self.openingLabel.text = persona.shortDesc.length > 0 ? persona.shortDesc : persona.prologue;
    
    // 关键修复：清空消息时停止音频播放，避免状态混乱
    [self.chatView stopPlayingAudio];

    NSLog(@"[KBPersonaChatCell] ========== setPersona 调试 ==========");
    NSLog(@"[KBPersonaChatCell] personaId: %ld", (long)persona.personaId);
    NSLog(@"[KBPersonaChatCell] messages.count: %ld", (long)self.messages.count);
    NSLog(@"[KBPersonaChatCell] chatView.frame: %@", NSStringFromCGRect(self.chatView.frame));
    NSLog(@"[KBPersonaChatCell] contentView.frame: %@", NSStringFromCGRect(self.contentView.frame));

    if (self.messages.count > 0) {
        [self.chatView updateIntroFooterText:nil];
        [self ensureOpeningMessageAtTop];
        // 同步缓存，避免下次从缓存缺少开场白
        [[KBAIChatMessageCacheManager shared] saveMessages:self.messages
                                             forCompanionId:persona.personaId];
        [self.chatView reloadWithMessages:self.messages
                               keepOffset:NO
                          scrollToBottom:YES];
    } else {
        [self.chatView clearMessages];
        [self.chatView updateIntroFooterText:persona.prologue];
    }
    
    NSLog(@"[KBPersonaChatCell] ========== setPersona 结束 ==========");
    
    [self.commentButton setTitle:persona.commentCount forState:UIControlStateNormal];
    [self.likeButton setTitle:persona.likeCount forState:UIControlStateNormal];
    self.likeButton.selected = persona.liked;
}

#pragma mark - 2：数据加载

- (void)preloadDataIfNeeded {
    if (self.hasLoadedData || self.isLoading) {
        return;
    }
    
    [self loadChatHistory];
}

- (void)loadChatHistory {
    if (self.isLoading || !self.hasMoreHistory) {
        [self.chatView endLoadMoreWithHasMoreData:self.hasMoreHistory];
        return;
    }
    
    self.isLoading = YES;
    
    if (self.currentPage == 1) {
        [self.chatView resetNoMoreData];
    }
    
    // 使用 persona.personaId 作为 companionId
    NSInteger companionId = self.persona.personaId;
    
    __weak typeof(self) weakSelf = self;
    [self.aiVM fetchChatHistoryWithCompanionId:companionId
                                        pageNum:self.currentPage
                                       pageSize:10
                                     completion:^(KBChatHistoryPageModel *pageModel, NSError *error) {
        __strong typeof(weakSelf) strongSelf = weakSelf;
        if (!strongSelf) {
            return;
        }
        
        if (error) {
            NSLog(@"[KBPersonaChatCell] 加载聊天记录失败：%@", error.localizedDescription);
            dispatch_async(dispatch_get_main_queue(), ^{
                strongSelf.isLoading = NO;
                [strongSelf.chatView endLoadMoreWithHasMoreData:strongSelf.hasMoreHistory];
                if (strongSelf.currentPage == 1 && strongSelf.persona.prologue.length > 0) {
                    [strongSelf showOpeningMessage];
                }
            });
            return;
        }
        
        strongSelf.hasLoadedData = YES;
        strongSelf.hasMoreHistory = pageModel.hasMore;

        NSInteger loadedPage = strongSelf.currentPage;
        if (loadedPage == 1) {
            BOOL isEmpty = (pageModel.total == 0);
            strongSelf.shouldAutoPlayPrologueAudio = isEmpty && (strongSelf.persona.prologueAudio.length > 0);
            if (!strongSelf.shouldAutoPlayPrologueAudio) {
                [strongSelf.chatView stopPlayingAudio];
            } else {
                [strongSelf tryPlayPrologueAudioIfNeeded];
            }
        }
        if (loadedPage == 1 && pageModel.total == 0) {
            dispatch_async(dispatch_get_main_queue(), ^{
                [strongSelf.chatView clearMessages];
                [strongSelf.chatView updateIntroFooterText:strongSelf.persona.prologue];
                [strongSelf.chatView endLoadMoreWithHasMoreData:strongSelf.hasMoreHistory];
                strongSelf.isLoading = NO;
            });
            strongSelf.currentPage++;
            return;
        }
        
        // 转换为 KBAiChatMessage
        NSMutableArray *newMessages = [NSMutableArray array];
        for (KBChatHistoryModel *item in pageModel.records) {
            KBAiChatMessage *message;
            
            // 根据 sender 判断消息类型
            // sender = 1: 用户消息（右侧）
            // sender = 2: AI 消息（左侧）
            if (item.sender == KBChatSenderUser) {
                // 用户消息
                message = [KBAiChatMessage userMessageWithText:item.content];
            } else if (item.sender == KBChatSenderAssistant) {
                // AI 消息
                message = [KBAiChatMessage assistantMessageWithText:item.content];
            } else {
                // 未知类型，默认为 AI 消息
                NSLog(@"[KBPersonaChatCell] 未知的 sender 类型：%ld", (long)item.sender);
                message = [KBAiChatMessage assistantMessageWithText:item.content];
            }
            
            message.isComplete = YES;
            message.needsTypewriterEffect = NO;
            [newMessages addObject:message];
//            [newMessages insertObject:message atIndex:0];
        }
        
        // 插入历史消息（确保开场白始终是第一条）
        [strongSelf.chatView updateIntroFooterText:nil];
        
        if (loadedPage == 1) {
            // 第一页，直接赋值
            strongSelf.messages = newMessages;
            [strongSelf ensureOpeningMessageAtTop];
        } else {
            // 后续页，继续加载历史
            [strongSelf ensureOpeningMessageAtTop];
            if (newMessages.count > 0) {
                if (strongSelf.chatView.inverted) {
                    NSInteger openingIndex = [strongSelf openingMessageIndexInMessages];
                    NSUInteger insertIndex = (openingIndex != NSNotFound) ? (NSUInteger)openingIndex : strongSelf.messages.count;
                    NSIndexSet *indexSet = [NSIndexSet indexSetWithIndexesInRange:NSMakeRange(insertIndex, newMessages.count)];
                    [strongSelf.messages insertObjects:newMessages atIndexes:indexSet];
                } else {
                    NSUInteger insertIndex = [strongSelf hasOpeningMessageAtTop] ? 1 : 0;
                    NSIndexSet *indexSet = [NSIndexSet indexSetWithIndexesInRange:NSMakeRange(insertIndex, newMessages.count)];
                    [strongSelf.messages insertObjects:newMessages atIndexes:indexSet];
                }
            }
        }
        
        // 刷新 UI
        dispatch_async(dispatch_get_main_queue(), ^{
            if (loadedPage == 1) {
                NSLog(@"[KBPersonaChatCell] 刷新 UI - loadedPage: %ld, keepOffset: 0, scrollToBottom: 1", 
                      (long)loadedPage);
                [strongSelf.chatView reloadWithMessages:strongSelf.messages
                                             keepOffset:NO
                                        scrollToBottom:YES];
            } else {
                if (strongSelf.chatView.inverted) {
                    NSLog(@"[KBPersonaChatCell] 刷新 UI - loadedPage: %ld, appendHistory", (long)loadedPage);
                    KBAiChatMessage *openingMessage = [strongSelf openingMessageInMessages];
                    [strongSelf.chatView appendHistoryMessages:newMessages openingMessage:openingMessage];
                } else {
                    NSLog(@"[KBPersonaChatCell] 刷新 UI - loadedPage: %ld, prependHistory",
                          (long)loadedPage);
                    KBAiChatMessage *openingMessage = [strongSelf hasOpeningMessageAtTop] ? strongSelf.messages.firstObject : nil;
                    [strongSelf.chatView prependHistoryMessages:newMessages openingMessage:openingMessage];
                }
            }
            [strongSelf.chatView endLoadMoreWithHasMoreData:strongSelf.hasMoreHistory];
            
            // ✅ 保存到缓存（包含开场白）
            [[KBAIChatMessageCacheManager shared] saveMessages:strongSelf.messages
                                                 forCompanionId:companionId];
            strongSelf.isLoading = NO;
        });
        
        strongSelf.currentPage++;
        
        NSLog(@"[KBPersonaChatCell] 加载成功：第 %ld 页，%ld 条消息，还有更多：%@",
              (long)strongSelf.currentPage - 1,
              (long)newMessages.count,
              pageModel.hasMore ? @"是" : @"否");
    }];
}

#pragma mark - Prologue Audio

- (void)tryPlayPrologueAudioIfNeeded {
    if (!self.isCurrentPersonaCell) {
        return;
    }
    if (!self.shouldAutoPlayPrologueAudio) {
        return;
    }
    if (self.hasPlayedPrologueAudio) {
        return;
    }
    if (self.persona.prologueAudio.length == 0) {
        return;
    }
    self.hasPlayedPrologueAudio = YES;
    [self.chatView playRemoteAudioWithURLString:self.persona.prologueAudio];
}

- (void)onBecameCurrentPersonaCell {
    self.isCurrentPersonaCell = YES;
    [self tryPlayPrologueAudioIfNeeded];
}

- (void)onResignedCurrentPersonaCell {
    self.isCurrentPersonaCell = NO;
    [self.chatView stopPlayingAudio];
}

- (void)loadMoreHistory {
    if (!self.hasMoreHistory || self.isLoading) {
        [self.chatView endLoadMoreWithHasMoreData:self.hasMoreHistory];
        return;
    }
    
    [self loadChatHistory];
}

- (void)showOpeningMessage {
    if (self.messages.count == 0) {
        [self.chatView clearMessages];
        [self.chatView updateIntroFooterText:self.persona.prologue];
        return;
    }
    
    [self.chatView updateIntroFooterText:nil];
    [self ensureOpeningMessageAtTop];
    
    dispatch_async(dispatch_get_main_queue(), ^{
        [self.chatView reloadWithMessages:self.messages
                               keepOffset:NO
                          scrollToBottom:YES];
    });
}

- (BOOL)hasOpeningMessageAtTop {
    if (self.messages.count == 0) {
        return NO;
    }
    if (self.chatView.inverted) {
        return [self isOpeningMessage:self.messages.lastObject];
    }
    return [self isOpeningMessage:self.messages.firstObject];
}

- (BOOL)isOpeningMessage:(KBAiChatMessage *)message {
    if (!message) {
        return NO;
    }
    NSString *prologue = [self currentPrologueText];
    if (prologue.length == 0) {
        return NO;
    }
    return (message.type == KBAiChatMessageTypeAssistant) && [message.text isEqualToString:prologue];
}

- (void)ensureOpeningMessageAtTop {
    NSString *prologue = [self currentPrologueText];
    if (prologue.length == 0) {
        return;
    }
    if (!self.messages) {
        self.messages = [NSMutableArray array];
    }
    if ([self hasOpeningMessageAtTop]) {
        return;
    }
    KBAiChatMessage *openingMsg = [KBAiChatMessage assistantMessageWithText:prologue];
    openingMsg.isComplete = YES;
    openingMsg.needsTypewriterEffect = NO;
    if (self.chatView.inverted) {
        [self.messages addObject:openingMsg];
    } else {
        [self.messages insertObject:openingMsg atIndex:0];
    }
}

- (nullable KBAiChatMessage *)openingMessageInMessages {
    NSInteger index = [self openingMessageIndexInMessages];
    if (index == NSNotFound) {
        return nil;
    }
    return self.messages[index];
}

- (NSInteger)openingMessageIndexInMessages {
    NSString *prologue = [self currentPrologueText];
    if (prologue.length == 0 || self.messages.count == 0) {
        return NSNotFound;
    }
    
    if (self.chatView.inverted) {
        NSInteger lastIndex = self.messages.count - 1;
        KBAiChatMessage *msg = self.messages[lastIndex];
        return [self isOpeningMessage:msg] ? lastIndex : NSNotFound;
    }
    
    KBAiChatMessage *first = self.messages.firstObject;
    return [self isOpeningMessage:first] ? 0 : NSNotFound;
}

#pragma mark - 通知处理

/// 处理聊天会话被重置的通知
- (void)handleChatSessionReset:(NSNotification *)notification {
    NSNumber *companionIdObj = notification.userInfo[@"companionId"];
    if (!companionIdObj) {
        return;
    }
    
    NSInteger companionId = [companionIdObj integerValue];
    
    // 如果是当前显示的人设，清空聊天记录
    if (self.persona && self.persona.personaId == companionId) {
        NSLog(@"[KBPersonaChatCell] 收到聊天重置通知：companionId=%ld, 清空聊天记录", (long)companionId);
        
        // 清空消息数组
        self.messages = [NSMutableArray array];
        self.hasLoadedData = NO;
        self.currentPage = 1;
        self.hasMoreHistory = YES;
        
        // 清空聊天视图
        [self.chatView clearMessages];
        
        // 显示开场白（始终保持第一条）
        [self showOpeningMessage];
    }
}

#pragma mark - 3：消息追加

- (void)appendUserMessage:(NSString *)text {
    if (text.length == 0) {
        return;
    }
    
    if (!self.messages) {
        self.messages = [NSMutableArray array];
    }
    
    self.shouldAutoPlayPrologueAudio = NO;
    [self.chatView stopPlayingAudio];
    [self.chatView updateIntroFooterText:nil];
    [self ensureOpeningMessageAtTop];
    KBAiChatMessage *message = [KBAiChatMessage userMessageWithText:text];
    if (self.chatView.inverted) {
        [self.messages insertObject:message atIndex:0];
    } else {
        [self.messages addObject:message];
    }
    [self.chatView addMessage:message autoScroll:YES];
}

- (void)appendUserMessage:(NSString *)text requestId:(NSString *)requestId {
    [self appendUserMessage:text];
}

- (void)appendLoadingUserMessage {
    if (!self.messages) {
        self.messages = [NSMutableArray array];
    }
    
    self.shouldAutoPlayPrologueAudio = NO;
    [self.chatView stopPlayingAudio];
    [self.chatView updateIntroFooterText:nil];
    [self ensureOpeningMessageAtTop];
    KBAiChatMessage *message = [KBAiChatMessage loadingUserMessage];
    if (self.chatView.inverted) {
        [self.messages insertObject:message atIndex:0];
    } else {
        [self.messages addObject:message];
    }
    [self.chatView addMessage:message autoScroll:YES];
}

- (void)updateLastUserMessage:(NSString *)text {
    [self.chatView updateLastUserMessage:text];
    
    // 更新数据源中的消息
    if (self.chatView.inverted) {
        for (NSInteger i = 0; i < self.messages.count; i++) {
            KBAiChatMessage *message = self.messages[i];
            if (message.type == KBAiChatMessageTypeUser && message.isLoading) {
                message.text = text;
                message.isLoading = NO;
                message.isComplete = YES;
                break;
            }
        }
    } else {
        for (NSInteger i = self.messages.count - 1; i >= 0; i--) {
            KBAiChatMessage *message = self.messages[i];
            if (message.type == KBAiChatMessageTypeUser && message.isLoading) {
                message.text = text;
                message.isLoading = NO;
                message.isComplete = YES;
                break;
            }
        }
    }
}

- (void)markLastUserMessageLoadingComplete {
    [self.chatView markLastUserMessageLoadingComplete];

    // 同步更新数据源
    if (self.chatView.inverted) {
        for (NSInteger i = 0; i < self.messages.count; i++) {
            KBAiChatMessage *message = self.messages[i];
            if (message.type == KBAiChatMessageTypeUser && message.isLoading) {
                message.isLoading = NO;
                break;
            }
        }
    } else {
        for (NSInteger i = self.messages.count - 1; i >= 0; i--) {
            KBAiChatMessage *message = self.messages[i];
            if (message.type == KBAiChatMessageTypeUser && message.isLoading) {
                message.isLoading = NO;
                break;
            }
        }
    }
}

- (void)appendAssistantMessage:(NSString *)text
                        audioId:(NSString *)audioId {
    if (text.length == 0) {
        return;
    }
    
    if (!self.messages) {
        self.messages = [NSMutableArray array];
    }
    
    self.shouldAutoPlayPrologueAudio = NO;
    [self.chatView updateIntroFooterText:nil];
    [self ensureOpeningMessageAtTop];
    
    // 查找并移除 loading 消息
    [self removeLoadingAssistantMessage];
    
    KBAiChatMessage *message = [KBAiChatMessage assistantMessageWithText:text
                                                                 audioId:audioId];
    message.needsTypewriterEffect = YES;
    if (self.chatView.inverted) {
        [self.messages insertObject:message atIndex:0];
    } else {
        [self.messages addObject:message];
    }
    [self.chatView addMessage:message autoScroll:YES];
}

/// 添加 loading AI 消息
- (void)appendLoadingAssistantMessage {
    if (!self.messages) {
        self.messages = [NSMutableArray array];
    }
    
    self.shouldAutoPlayPrologueAudio = NO;
    [self.chatView updateIntroFooterText:nil];
    [self ensureOpeningMessageAtTop];
    KBAiChatMessage *message = [KBAiChatMessage loadingAssistantMessage];
    if (self.chatView.inverted) {
        [self.messages insertObject:message atIndex:0];
    } else {
        [self.messages addObject:message];
    }
    [self.chatView addMessage:message autoScroll:YES];
}

- (void)appendLoadingAssistantMessageWithRequestId:(NSString *)requestId {
    if (requestId.length == 0) {
        [self appendLoadingAssistantMessage];
        return;
    }
    
    if (!self.pendingAssistantMessages) {
        self.pendingAssistantMessages = [NSMutableDictionary dictionary];
    }
    
    if (!self.messages) {
        self.messages = [NSMutableArray array];
    }
    
    self.shouldAutoPlayPrologueAudio = NO;
    [self.chatView updateIntroFooterText:nil];
    [self ensureOpeningMessageAtTop];
    KBAiChatMessage *message = [KBAiChatMessage loadingAssistantMessage];
    self.pendingAssistantMessages[requestId] = message;
    
    if (self.chatView.inverted) {
        [self.messages insertObject:message atIndex:0];
    } else {
        [self.messages addObject:message];
    }
    
    [self.chatView addMessage:message autoScroll:YES];
}

/// 移除 loading AI 消息
- (void)removeLoadingAssistantMessage {
    // 从数据源中移除
    if (self.chatView.inverted) {
        for (NSInteger i = 0; i < self.messages.count; i++) {
            KBAiChatMessage *message = self.messages[i];
            if (message.type == KBAiChatMessageTypeAssistant && message.isLoading) {
                [self.messages removeObjectAtIndex:i];
                break;
            }
        }
    } else {
        for (NSInteger i = self.messages.count - 1; i >= 0; i--) {
            KBAiChatMessage *message = self.messages[i];
            if (message.type == KBAiChatMessageTypeAssistant && message.isLoading) {
                [self.messages removeObjectAtIndex:i];
                break;
            }
        }
    }
    
    // 从 chatView 中移除
    [self.chatView removeLoadingAssistantMessage];
}

- (void)removeLoadingAssistantMessageWithRequestId:(NSString *)requestId {
    if (requestId.length == 0) {
        [self removeLoadingAssistantMessage];
        return;
    }
    
    KBAiChatMessage *target = self.pendingAssistantMessages[requestId];
    if (!target) {
        return;
    }
    
    [self.pendingAssistantMessages removeObjectForKey:requestId];
    
    NSInteger idx = [self.messages indexOfObjectIdenticalTo:target];
    if (idx != NSNotFound) {
        [self.messages removeObjectAtIndex:idx];
        [self.chatView reloadWithMessages:self.messages keepOffset:NO scrollToBottom:NO];
    }
}

- (void)updateAssistantMessageWithRequestId:(NSString *)requestId
                                      text:(NSString *)text
                                    audioId:(nullable NSString *)audioId {
    if (requestId.length == 0) {
        [self appendAssistantMessage:text audioId:audioId];
        return;
    }
    
    KBAiChatMessage *target = self.pendingAssistantMessages[requestId];
    [self.pendingAssistantMessages removeObjectForKey:requestId];
    
    if (!target) {
        [self appendAssistantMessage:text audioId:audioId];
        return;
    }
    
    target.isLoading = NO;
    target.text = text ?: @"";
    target.audioId = audioId;
    target.needsTypewriterEffect = YES;
    target.isComplete = NO;
    
    [self.chatView reloadMessage:target];
}

- (void)updateChatViewBottomInset:(CGFloat)bottomInset {
    [self.chatView updateContentBottomInset:bottomInset];
}

#pragma mark - KBChatTableViewDelegate

- (void)chatTableViewDidScroll:(KBChatTableView *)chatView
                    scrollView:(UIScrollView *)scrollView {
    CGFloat offsetY = scrollView.contentOffset.y;
    
    if (chatView.inverted) {
        CGFloat contentHeight = scrollView.contentSize.height;
        CGFloat scrollViewHeight = scrollView.bounds.size.height;
        CGFloat maxOffsetY = contentHeight - scrollViewHeight + scrollView.contentInset.bottom;
        if (maxOffsetY < 0) {
            maxOffsetY = 0;
        }
        if (offsetY >= maxOffsetY - 50 && !self.isLoading && self.canTriggerLoadMore && self.hasMoreHistory) {
            self.canTriggerLoadMore = NO;
            [self loadMoreHistory];
        } else if (offsetY < maxOffsetY - 100) {
            self.canTriggerLoadMore = YES;
        }
        return;
    }
    
    if (offsetY <= 50 && !self.isLoading && self.canTriggerLoadMore && self.hasMoreHistory) {
        self.canTriggerLoadMore = NO;
        [self loadMoreHistory];
    } else if (offsetY > -20) {
        self.canTriggerLoadMore = YES;
    }
}

- (void)chatTableViewDidTriggerLoadMore:(KBChatTableView *)chatView {
    [self loadMoreHistory];
}

#pragma mark - Lazy Load

- (UIImageView *)backgroundImageView {
    if (!_backgroundImageView) {
        _backgroundImageView = [[UIImageView alloc] init];
        _backgroundImageView.contentMode = UIViewContentModeScaleAspectFill;
        _backgroundImageView.clipsToBounds = YES;
    }
    return _backgroundImageView;
}

- (UIImageView *)avatarImageView {
    if (!_avatarImageView) {
        _avatarImageView = [[UIImageView alloc] init];
        _avatarImageView.contentMode = UIViewContentModeScaleAspectFill;
        _avatarImageView.layer.cornerRadius = 27;
        _avatarImageView.layer.borderWidth = 3;
        _avatarImageView.layer.borderColor = [UIColor whiteColor].CGColor;
        _avatarImageView.clipsToBounds = YES;
        _avatarImageView.userInteractionEnabled = YES;
        
        // 添加点击手势
        UITapGestureRecognizer *tap = [[UITapGestureRecognizer alloc] initWithTarget:self action:@selector(avatarTapped)];
        [_avatarImageView addGestureRecognizer:tap];
    }
    return _avatarImageView;
}

- (UILabel *)nameLabel {
    if (!_nameLabel) {
        _nameLabel = [[UILabel alloc] init];
        _nameLabel.font = [UIFont boldSystemFontOfSize:12];
        _nameLabel.textColor = [UIColor whiteColor];
        _nameLabel.textAlignment = NSTextAlignmentCenter;
    }
    return _nameLabel;
}

- (UILabel *)openingLabel {
    if (!_openingLabel) {
        _openingLabel = [[UILabel alloc] init];
        _openingLabel.font = [UIFont systemFontOfSize:14];
        _openingLabel.textColor = [[UIColor whiteColor] colorWithAlphaComponent:0.9];
        _openingLabel.textAlignment = NSTextAlignmentCenter;
        _openingLabel.numberOfLines = 2;
    }
    return _openingLabel;
}

- (KBChatTableView *)chatView {
    if (!_chatView) {
        _chatView = [[KBChatTableView alloc] init];
        _chatView.backgroundColor = [UIColor clearColor];
        _chatView.inverted = YES;
        _chatView.delegate = self;
    }
    return _chatView;
}

- (KBImagePositionButton *)commentButton {
    if (!_commentButton) {
        // 创建上图下文的按钮
        _commentButton = [[KBImagePositionButton alloc] initWithImagePosition:KBImagePositionTop spacing:4];
        
        // 关键修复：先设置字体，再设置文字，避免循环调用
        _commentButton.titleLabel.font = [UIFont systemFontOfSize:10];
        
        // 设置图片
        [_commentButton setImage:[UIImage imageNamed:@"ai_comment_icon"] forState:UIControlStateNormal];
        
        // 设置文字
        [_commentButton setTitle:@"0" forState:UIControlStateNormal];
        [_commentButton setTitleColor:[[UIColor whiteColor] colorWithAlphaComponent:0.8] forState:UIControlStateNormal];
        
        // 添加点击事件
        [_commentButton addTarget:self action:@selector(commentButtonTapped:) forControlEvents:UIControlEventTouchUpInside];
    }
    return _commentButton;
}

- (KBImagePositionButton *)likeButton {
    if (!_likeButton) {
        // 创建上图下文的按钮
        _likeButton = [[KBImagePositionButton alloc] initWithImagePosition:KBImagePositionTop spacing:4];
        
        // 关键修复：先设置字体，再设置文字，避免循环调用
        _likeButton.titleLabel.font = [UIFont systemFontOfSize:10];
        
        // 设置图片
        [_likeButton setImage:[UIImage imageNamed:@"ai_live_icon"] forState:UIControlStateNormal];
        [_likeButton setImage:[UIImage imageNamed:@"ai_livesel_icon"] forState:UIControlStateSelected];
        
        // 设置文字
        [_likeButton setTitle:@"0" forState:UIControlStateNormal];
        [_likeButton setTitleColor:[[UIColor whiteColor] colorWithAlphaComponent:0.8] forState:UIControlStateNormal];
        
        // 添加点击事件
        [_likeButton addTarget:self action:@selector(likeButtonTapped:) forControlEvents:UIControlEventTouchUpInside];
    }
    return _likeButton;
}

#pragma mark - Button Actions

- (void)avatarTapped {
    NSLog(@"[KBPersonaChatCell] 头像点击，跳转到人设详情页");
    
    if (self.persona.personaId <= 0) {
        NSLog(@"[KBPersonaChatCell] personaId 无效，取消跳转");
        return;
    }
    
    AIPersonInfoVC *vc = [[AIPersonInfoVC alloc] init];
    vc.companionId = self.persona.personaId;
    [KB_CURRENT_NAV pushViewController:vc animated:YES];
}

- (void)commentButtonTapped:(KBImagePositionButton *)sender {
    NSLog(@"[KBPersonaChatCell] 评论按钮点击");
    
    // 弹出评论视图
    [self showComment];
}

- (void)likeButtonTapped:(KBImagePositionButton *)sender {
    NSLog(@"[KBPersonaChatCell] 喜欢按钮点击");
    
    NSInteger personaId = self.persona.personaId;
    
    // 禁用按钮，防止重复点击
    sender.enabled = NO;
    
    __weak typeof(self) weakSelf = self;
    [self.aiVM likeCompanionWithCompanionId:personaId completion:^(KBCommentLikeResponse * _Nullable response, NSError * _Nullable error) {
        __strong typeof(weakSelf) strongSelf = weakSelf;
        if (!strongSelf) {
            return;
        }
        
        dispatch_async(dispatch_get_main_queue(), ^{
            // 恢复按钮可用状态
            sender.enabled = YES;
            
            if (error) {
                NSLog(@"[KBPersonaChatCell] 点赞失败：%@", error.localizedDescription);
                // TODO: 显示错误提示
                return;
            }
            
            if (response && response.code == 0) {
                // 获取当前喜欢数
                NSInteger currentLikeCount = [strongSelf.persona.likeCount integerValue];
                
                // response.data: true 表示点赞成功，false 表示取消点赞成功
                if (response.data) {
                    // 点赞成功，喜欢数加1
                    currentLikeCount += 1;
                    sender.selected = YES;
                    NSLog(@"[KBPersonaChatCell] 点赞成功，新喜欢数：%ld", (long)currentLikeCount);
                } else {
                    // 取消点赞成功，喜欢数减1（但不能小于0）
                    currentLikeCount = MAX(0, currentLikeCount - 1);
                    sender.selected = NO;
                    NSLog(@"[KBPersonaChatCell] 取消点赞成功，新喜欢数：%ld", (long)currentLikeCount);
                }
                
                // 更新模型数据
                strongSelf.persona.likeCount = [NSString stringWithFormat:@"%ld", (long)currentLikeCount];
                strongSelf.persona.liked = sender.selected;
                
                // 更新按钮显示文字
                [sender setTitle:strongSelf.persona.likeCount forState:UIControlStateNormal];
            } else {
                NSLog(@"[KBPersonaChatCell] 点赞失败：%@", response.message ?: @"未知错误");
                // TODO: 显示错误提示
            }
        });
    }];
}

#pragma mark - Comment View

- (void)showComment {
    // 关闭之前的弹窗
    if (self.popView) {
        [self.popView dismiss];
    }
    
    CGFloat customViewHeight = KB_SCREEN_HEIGHT * 0.7;
    KBAICommentView *customView = [[KBAICommentView alloc]
                                   initWithFrame:CGRectMake(0, 0, KB_SCREEN_WIDTH, customViewHeight)];
    
    NSString *commentCount = self.persona.commentCount;
    NSInteger totalCommentCount = [commentCount integerValue];;
    customView.totalCommentCount = totalCommentCount;
    // 设置评论视图的人设 ID
    customView.companionId = self.persona.personaId;
    
    // 加载评论数据
    [customView loadComments];
    
    LSTPopView *popView = [LSTPopView initWithCustomView:customView
                                              parentView:nil
                                                popStyle:LSTPopStyleSmoothFromBottom
                                            dismissStyle:LSTDismissStyleSmoothToBottom];
    customView.popView = popView;
    popView.bgColor = [UIColor clearColor];
    self.popView = popView;
    popView.priority = 1000;
    popView.isAvoidKeyboard = NO;
    popView.hemStyle = LSTHemStyleBottom;
    popView.dragStyle = LSTDragStyleY_Positive;
    popView.dragDistance = customViewHeight * 0.5;
    popView.sweepStyle = LSTSweepStyleY_Positive;
    popView.swipeVelocity = 1600;
    popView.sweepDismissStyle = LSTSweepDismissStyleSmooth;
    popView.bgClickBlock = ^{
        [KB_CURRENT_NAV.view endEditing:true];
    };
    [popView pop];
}



- (AiVM *)aiVM{
    if (!_aiVM) {
        _aiVM = [[AiVM alloc] init];
    }
    return _aiVM;
}
@end