//
//  JXCommentViewController.m
//  AICity
//
//  Created by TogetherWatch on 2025-10-20.
//

#import "JXCommentViewController.h"
#import "JXAPIService.h"
#import "JXCommentContent.h"
#import "CommentItemCell.h"
#import "CommentRpItemCell.h"
#import "CommentFooterView.h"
// Cell复用标识符
static NSString * const kCommentCellIdentifier = @"JXCommentCell";

@interface JXCommentViewController () <UITableViewDelegate, UITableViewDataSource, UITextFieldDelegate>

#pragma mark - UI组件
@property (nonatomic, strong) UIView *headerView;
@property (nonatomic, strong) UILabel *titleLabel;
@property (nonatomic, strong) UIButton *closeButton;

@property (nonatomic, strong) UITableView *tableView;
@property (nonatomic, strong) UIRefreshControl *refreshControl;

@property (nonatomic, strong) UIView *inputContainerView;
@property (nonatomic, strong) UITextField *inputTextField;
@property (nonatomic, strong) UIButton *submitButton;

#pragma mark - 数据
@property (nonatomic, copy) NSString *dramaId;
@property (nonatomic, strong) NSMutableArray<JXCommentContent *> *commentList;
@property (nonatomic, assign) NSInteger currentPage;
@property (nonatomic, assign) BOOL isLoading;
@property (nonatomic, assign) BOOL hasMoreData;
@property (strong, nonatomic) UIView *emptyView;
// 回复相关
@property (nonatomic, assign) long long replyToCommentId;
@property (nonatomic, copy) NSString *replyToUserName;

@end

@implementation JXCommentViewController

#pragma mark - 初始化

- (instancetype)initWithDramaId:(NSString *)dramaId {
    self = [super init];
    if (self) {
        _dramaId = dramaId;
        _currentPage = 1;
        _hasMoreData = YES;
        _commentList = [NSMutableArray array];
        _replyToCommentId = 0;
    }
    return self;
}

#pragma mark - 生命周期

- (void)viewDidLoad {
    [super viewDidLoad];
    
    self.view.backgroundColor = [UIColor whiteColor];
    
    [self setupUI];
    [self loadComments];
    
    // 监听键盘
    [[NSNotificationCenter defaultCenter] addObserver:self
                                             selector:@selector(keyboardWillShow:)
                                                 name:UIKeyboardWillShowNotification
                                               object:nil];
    [[NSNotificationCenter defaultCenter] addObserver:self
                                             selector:@selector(keyboardWillHide:)
                                                 name:UIKeyboardWillHideNotification
                                               object:nil];
}

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

#pragma mark - UI设置

- (void)setupUI {
    // 顶部标题栏
    [self setupHeader];
    
    // 评论列表
    [self setupTableView];
    
    // 底部输入框
    [self setupInputContainer];
}

- (void)setupHeader {
    self.headerView = [[UIView alloc] init];
    self.headerView.backgroundColor = [UIColor whiteColor];
    [self.view addSubview:self.headerView];
    
    // 标题
    self.titleLabel = [[UILabel alloc] init];
    self.titleLabel.text = @"全部评论";
    self.titleLabel.font = [UIFont boldSystemFontOfSize:15];
    self.titleLabel.textColor = [UIColor colorWithRed:1/255.0 green:1/255.0 blue:1/255.0 alpha:1];
    [self.headerView addSubview:self.titleLabel];
    
    // 关闭按钮
    self.closeButton = [UIButton buttonWithType:UIButtonTypeSystem];
    [self.closeButton setImage:[UIImage imageNamed:@"关闭-1"] forState:UIControlStateNormal];
    self.closeButton.tintColor = [UIColor grayColor];
    [self.closeButton addTarget:self action:@selector(handleClose) forControlEvents:UIControlEventTouchUpInside];
    [self.headerView addSubview:self.closeButton];
    
    // 约束
    self.headerView.translatesAutoresizingMaskIntoConstraints = NO;
    self.titleLabel.translatesAutoresizingMaskIntoConstraints = NO;
    self.closeButton.translatesAutoresizingMaskIntoConstraints = NO;
    
    [NSLayoutConstraint activateConstraints:@[
        [self.headerView.topAnchor constraintEqualToAnchor:self.view.topAnchor],
        [self.headerView.leadingAnchor constraintEqualToAnchor:self.view.leadingAnchor],
        [self.headerView.trailingAnchor constraintEqualToAnchor:self.view.trailingAnchor],
        [self.headerView.heightAnchor constraintEqualToConstant:50],
        
        [self.titleLabel.centerYAnchor constraintEqualToAnchor:self.headerView.centerYAnchor],
        [self.titleLabel.leadingAnchor constraintEqualToAnchor:self.headerView.leadingAnchor constant:16],
        [self.titleLabel.heightAnchor constraintEqualToConstant:50],
        [self.titleLabel.widthAnchor constraintEqualToConstant:200],
        
        [self.closeButton.trailingAnchor constraintEqualToAnchor:self.headerView.trailingAnchor constant:-8],
        [self.closeButton.centerYAnchor constraintEqualToAnchor:self.headerView.centerYAnchor],
        [self.closeButton.widthAnchor constraintEqualToConstant:50],
        [self.closeButton.heightAnchor constraintEqualToConstant:50]
    ]];
}

- (void)setupTableView {
    self.tableView = [[UITableView alloc] initWithFrame:CGRectZero style:UITableViewStylePlain];
    self.tableView.delegate = self;
    self.tableView.dataSource = self;
    self.tableView.separatorStyle = UITableViewCellSeparatorStyleNone;
    self.tableView.backgroundColor = [UIColor whiteColor];
    [self.tableView registerNib:[UINib nibWithNibName:NSStringFromClass(CommentItemCell.class) bundle:nil] forCellReuseIdentifier:NSStringFromClass(CommentItemCell.class)];
    [self.tableView registerNib:[UINib nibWithNibName:NSStringFromClass(CommentRpItemCell.class) bundle:nil] forCellReuseIdentifier:NSStringFromClass(CommentRpItemCell.class)];
    [self.tableView registerNib:[UINib nibWithNibName:NSStringFromClass(CommentFooterView.class) bundle:nil] forHeaderFooterViewReuseIdentifier:NSStringFromClass(CommentFooterView.class)];
    
    
    [self.view addSubview:self.tableView];
    
    // 下拉刷新
    self.refreshControl = [[UIRefreshControl alloc] init];
    [self.refreshControl addTarget:self action:@selector(handleRefresh) forControlEvents:UIControlEventValueChanged];
    [self.tableView addSubview:self.refreshControl];
    
    // 约束
    self.tableView.translatesAutoresizingMaskIntoConstraints = NO;
    [NSLayoutConstraint activateConstraints:@[
        [self.tableView.topAnchor constraintEqualToAnchor:self.headerView.bottomAnchor],
        [self.tableView.leadingAnchor constraintEqualToAnchor:self.view.leadingAnchor],
        [self.tableView.trailingAnchor constraintEqualToAnchor:self.view.trailingAnchor],
        [self.tableView.bottomAnchor constraintEqualToAnchor:self.view.bottomAnchor constant:-70]
    ]];
}

- (void)setupInputContainer {
    self.inputContainerView = [[UIView alloc] init];
    self.inputContainerView.backgroundColor = UIColor.whiteColor;
    [self.view addSubview:self.inputContainerView];
    
    // 输入框
    self.inputTextField = [[UITextField alloc] init];
    self.inputTextField.placeholder = @"说点什么...";
    self.inputTextField.backgroundColor = RGBACOLOR(241, 242, 244, 1);
    self.inputTextField.layer.cornerRadius = 20;
    self.inputTextField.returnKeyType = UIReturnKeySend;
    self.inputTextField.leftView = [[UIView alloc] initWithFrame:CGRectMake(0, 0, 12, 0)];
    self.inputTextField.leftViewMode = UITextFieldViewModeAlways;
    self.inputTextField.delegate = self;
    [self.inputTextField addTarget:self action:@selector(textFieldDidChange) forControlEvents:UIControlEventEditingChanged];
    [self.inputContainerView addSubview:self.inputTextField];
    
    self.submitButton = [UIButton buttonWithType:UIButtonTypeCustom];
    [self.submitButton setTitle:@"发送" forState:UIControlStateNormal];
    [self.submitButton setTitleColor:[UIColor whiteColor] forState:UIControlStateNormal];
    [self.submitButton setTitleColor:[UIColor whiteColor] forState:UIControlStateDisabled];
    self.submitButton.backgroundColor = [UIColor lightGrayColor];
    self.submitButton.layer.cornerRadius = 20;
    self.submitButton.enabled = NO;
    [self.submitButton addTarget:self action:@selector(handleSubmit) forControlEvents:UIControlEventTouchUpInside];
    [self.inputContainerView addSubview:self.submitButton];
    

    // 约束
    self.inputContainerView.translatesAutoresizingMaskIntoConstraints = NO;
    self.inputTextField.translatesAutoresizingMaskIntoConstraints = NO;
    self.submitButton.translatesAutoresizingMaskIntoConstraints = NO;
    
    [NSLayoutConstraint activateConstraints:@[
        [self.inputContainerView.leadingAnchor constraintEqualToAnchor:self.view.leadingAnchor],
        [self.inputContainerView.trailingAnchor constraintEqualToAnchor:self.view.trailingAnchor],
        [self.inputContainerView.bottomAnchor constraintEqualToAnchor:self.view.bottomAnchor constant:-safebottom],
        [self.inputContainerView.heightAnchor constraintEqualToConstant:50],
        
        [self.inputTextField.leadingAnchor constraintEqualToAnchor:self.inputContainerView.leadingAnchor constant:16],
        [self.inputTextField.rightAnchor constraintEqualToAnchor:self.inputContainerView.rightAnchor constant:-86],
        [self.inputTextField.centerYAnchor constraintEqualToAnchor:self.inputContainerView.centerYAnchor],
        [self.inputTextField.heightAnchor constraintEqualToConstant:40],
        
//        [self.submitButton.leadingAnchor constraintEqualToAnchor:self.inputTextField.trailingAnchor constant:8],
        [self.submitButton.trailingAnchor constraintEqualToAnchor:self.inputContainerView.trailingAnchor constant:-16],
        [self.submitButton.centerYAnchor constraintEqualToAnchor:self.inputContainerView.centerYAnchor],
        [self.submitButton.widthAnchor constraintEqualToConstant:60],
        [self.submitButton.heightAnchor constraintEqualToConstant:40]

    ]];
}

#pragma mark - 数据加载

- (void)loadComments {
    if (self.isLoading) {
        return;
    }
    
    self.isLoading = YES;
    
    [[JXAPIService sharedService] getCommentsWithDramaId:self.dramaId
                                                     page:self.currentPage
                                                 pageSize:20
                                                  success:^(id response) {
        self.isLoading = NO;
        [self.refreshControl endRefreshing];
        
        NSDictionary *data = response[@"data"];
        NSArray *list = data[@"list"];
//        long long totalCount = [data[@"total"] longLongValue];
        
        // 更新标题
        self.titleLabel.text = [NSString stringWithFormat:@"全部评论"];
        
        if (list.count == 0) {
            self.hasMoreData = NO;
            return;
        }
        
        // 转换为模型
        NSMutableArray *models = [NSMutableArray array];
        for (NSDictionary *dict in list) {
            JXCommentContent *comment = [[JXCommentContent alloc] initWithDictionary:dict];
            [models addObject:comment];
        }
        
        if (self.currentPage == 1) {
            self.commentList = models;
        } else {
            [self.commentList addObjectsFromArray:models];
        }
        self.emptyView.hidden = NO;
        [self.tableView reloadData];
        
    } failure:^(NSError *error) {
        self.isLoading = NO;
        [self.refreshControl endRefreshing];
        NSLog(@"[JXComment] 加载评论失败: %@", error.localizedDescription);
    }];
}

- (void)handleRefresh {
    self.currentPage = 1;
    self.hasMoreData = YES;
    [self loadComments];
}

- (void)loadMoreComments {
    if (!self.hasMoreData || self.isLoading) {
        return;
    }
    
    self.currentPage++;
    [self loadComments];
}

#pragma mark - UITableViewDataSource
- (NSInteger)numberOfSectionsInTableView:(UITableView *)tableView{
    return  self.commentList.count;
}
- (NSInteger)tableView:(UITableView *)tableView numberOfRowsInSection:(NSInteger)section {
    JXCommentContent *comment = self.commentList[section];
    return comment.isOpen ? comment.reply_count + 1 : 1;
}

- (UITableViewCell *)tableView:(UITableView *)tableView cellForRowAtIndexPath:(NSIndexPath *)indexPath {    
    if (indexPath.row == 0) {
        CommentItemCell *cell = [tableView dequeueReusableCellWithIdentifier:NSStringFromClass(CommentItemCell.class) forIndexPath:indexPath];
        cell.selectionStyle = UITableViewCellSelectionStyleNone;
        JXCommentContent *comment = self.commentList[indexPath.section];
        cell.labelT.text = comment.userName.length ? comment.userName : @"用户001";
        cell.labelC.text = comment.content;
        cell.labelL.text = [NSString stringWithFormat:@"%lld",comment.likeCount];
        if (comment.isLiked) {
            cell.imgL.image = [UIImage imageNamed:@"icon-2.2(1)"];
        }else{
            cell.imgL.image = [UIImage imageNamed:@"icon-2.2 1"];
        }
        cell.likeClicked = ^{
            [self handleLikeComment:comment];
        };
        cell.huifuClicked = ^{
            [self handleReplyComment:comment];
        };
        return cell;
    }
    CommentRpItemCell *cell = [tableView dequeueReusableCellWithIdentifier:NSStringFromClass(CommentRpItemCell.class) forIndexPath:indexPath];
    cell.selectionStyle = UITableViewCellSelectionStyleNone;
    
//    JXCommentContent *comment = self.commentList[indexPath.row];
//    
//    // 临时简单展示（后续可创建自定义Cell）
//    cell.textLabel.numberOfLines = 0;
//    NSString *likeText = comment.isLiked ? @"❤️" : @"🤍";
//    cell.textLabel.text = [NSString stringWithFormat:@"%@ · %@\n%@\n%@ %lld  💬 %lld",
//                          comment.userName,
//                          [comment formattedTime],
//                          comment.content,
//                          likeText,
//                          comment.likeCount,
//                          comment.replyCount];
    
    return cell;
}
- (UIView *)tableView:(UITableView *)tableView viewForFooterInSection:(NSInteger)section{
    CommentFooterView *header = [tableView dequeueReusableHeaderFooterViewWithIdentifier:NSStringFromClass(CommentFooterView.class)];
    JXCommentContent *comment = self.commentList[section];
    header.btnOpen.selected = comment.isOpen;
    header.btnClicked = ^{
        comment.isOpen = !comment.isOpen;
        [self.tableView reloadData];
    };
    return header;
}
#pragma mark - UITableViewDelegate
- (CGFloat)tableView:(UITableView *)tableView heightForFooterInSection:(NSInteger)section{
    JXCommentContent *comment = self.commentList[section];
    return comment.reply_count > 0 ? 0 : 40;
}
- (CGFloat)tableView:(UITableView *)tableView heightForRowAtIndexPath:(NSIndexPath *)indexPath {
    return UITableViewAutomaticDimension;
}

- (CGFloat)tableView:(UITableView *)tableView estimatedHeightForRowAtIndexPath:(NSIndexPath *)indexPath {
    return 80;
}

- (void)tableView:(UITableView *)tableView didSelectRowAtIndexPath:(NSIndexPath *)indexPath {
//    [tableView deselectRowAtIndexPath:indexPath animated:YES];
    
    return;
    if (indexPath.row == 0) {
        JXCommentContent *comment = self.commentList[indexPath.row];
        
        // 显示操作菜单（点赞、回复）
        UIAlertController *alert = [UIAlertController alertControllerWithTitle:nil
                                                                       message:nil
                                                                preferredStyle:UIAlertControllerStyleActionSheet];
        
        // 点赞
        NSString *likeTitle = comment.isLiked ? @"取消点赞" : @"点赞";
        [alert addAction:[UIAlertAction actionWithTitle:likeTitle
                                                  style:UIAlertActionStyleDefault
                                                handler:^(UIAlertAction *action) {
            [self handleLikeComment:comment];
        }]];
        
        // 回复
        [alert addAction:[UIAlertAction actionWithTitle:@"回复"
                                                  style:UIAlertActionStyleDefault
                                                handler:^(UIAlertAction *action) {
            [self handleReplyComment:comment];
        }]];
        
        [alert addAction:[UIAlertAction actionWithTitle:@"取消" style:UIAlertActionStyleCancel handler:nil]];
        
        [self presentViewController:alert animated:YES completion:nil];
    }
}

- (void)scrollViewDidScroll:(UIScrollView *)scrollView {
    // 预加载
    CGFloat offsetY = scrollView.contentOffset.y;
    CGFloat contentHeight = scrollView.contentSize.height;
    CGFloat scrollViewHeight = scrollView.bounds.size.height;
    
    if (offsetY + scrollViewHeight >= contentHeight - 200) {
//        [self loadMoreComments];
    }
}

#pragma mark - 评论交互

- (void)handleLikeComment:(JXCommentContent *)comment {
    [[JXAPIService sharedService] likeCommentWithCommentId:comment.commentId
                                                    success:^(id response) {
        // 更新UI
        BOOL isLiked = [response[@"data"][@"isLiked"] boolValue];
        long long likeCount = [response[@"data"][@"likeCount"] longLongValue];
        
        comment.isLiked = isLiked;
        comment.likeCount = likeCount;
        
        [self.tableView reloadData];
        
    } failure:^(NSError *error) {
        NSLog(@"[JXComment] 点赞评论失败: %@", error.localizedDescription);
    }];
}

- (void)handleReplyComment:(JXCommentContent *)comment {
    self.replyToCommentId = comment.commentId;
    self.replyToUserName = comment.userName;
    
    self.inputTextField.placeholder = [NSString stringWithFormat:@"回复 @%@:", comment.userName];
    [self.inputTextField becomeFirstResponder];
}

- (void)textFieldDidChange {
    NSString *text = self.inputTextField.text;
    self.submitButton.enabled = (text.length > 0);
}
- (BOOL)textFieldShouldReturn:(UITextField *)textField{
    if (textField.text.length == 0) {
        [MBProgressHUD showMessage:@"请输入评论"];
        return NO;
    }
    [self handleSubmit];
    return YES;
}
- (void)handleSubmit {
    NSString *content = self.inputTextField.text;
    if (content.length == 0) {
        return;
    }
    
    if (self.replyToCommentId > 0) {
        // 回复评论
        [[JXAPIService sharedService] replyCommentWithCommentId:self.replyToCommentId
                                                         content:content
                                                         success:^(id response) {
            NSLog(@"[JXComment] 回复成功");
            [self resetInput];
            [self handleRefresh];
        } failure:^(NSError *error) {
            NSLog(@"[JXComment] 回复失败: %@", error.localizedDescription);
        }];
    } else {
        // 提交新评论
        [[JXAPIService sharedService] submitCommentWithDramaId:self.dramaId
                                                        content:content
                                                        success:^(id response) {
            NSLog(@"[JXComment] 评论提交成功");
            [self resetInput];
            [self handleRefresh];
        } failure:^(NSError *error) {
            NSLog(@"[JXComment] 评论提交失败: %@", error.localizedDescription);
        }];
    }
}

- (void)resetInput {
    self.inputTextField.text = @"";
    self.inputTextField.placeholder = @"说点什么...";
    self.submitButton.enabled = NO;
    self.replyToCommentId = 0;
    self.replyToUserName = nil;
    [self.inputTextField resignFirstResponder];
}

#pragma mark - 键盘处理

- (void)keyboardWillShow:(NSNotification *)notification {
    NSDictionary *userInfo = notification.userInfo;
    CGRect keyboardFrame = [userInfo[UIKeyboardFrameEndUserInfoKey] CGRectValue];
    CGFloat keyboardHeight = keyboardFrame.size.height;
    
    [UIView animateWithDuration:0.3 animations:^{
        self.inputContainerView.transform = CGAffineTransformMakeTranslation(0, -keyboardHeight);
        self.tableView.contentInset = UIEdgeInsetsMake(0, 0, keyboardHeight, 0);
    }];
}

- (void)keyboardWillHide:(NSNotification *)notification {
    [UIView animateWithDuration:0.3 animations:^{
        self.inputContainerView.transform = CGAffineTransformIdentity;
        self.tableView.contentInset = UIEdgeInsetsZero;
    }];
}

#pragma mark - 关闭

- (void)handleClose {
    [self dismissViewControllerAnimated:YES completion:nil];
}

@end