//
//  NewMomentViewController.m
//  YuMi
//
//  Created by AI on 2025-10-09.
//  Copyright © 2025 YuMi. All rights reserved.
//

#import "NewMomentViewController.h"
#import "NewMomentCell.h"
#import <Masonry/Masonry.h>

@interface NewMomentViewController () <UITableViewDelegate, UITableViewDataSource>

// MARK: - UI Components

/// 主列表（卡片式布局）
@property (nonatomic, strong) UITableView *tableView;

/// 刷新控件
@property (nonatomic, strong) UIRefreshControl *refreshControl;

/// 发布按钮
@property (nonatomic, strong) UIButton *publishButton;

// MARK: - Data

/// 动态数据源
@property (nonatomic, strong) NSMutableArray *dataSource;

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

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

@end

@implementation NewMomentViewController

// MARK: - Lifecycle

- (void)viewDidLoad {
    [super viewDidLoad];
    
    self.title = @"动态";
    self.view.backgroundColor = [UIColor colorWithRed:0.96 green:0.96 blue:0.96 alpha:1.0]; // 浅灰背景
    
    [self setupUI];
    [self loadData];
    
    NSLog(@"[NewMomentViewController] 页面加载完成");
}

- (void)viewWillAppear:(BOOL)animated {
    [super viewWillAppear:animated];
    
    // 隐藏导航栏（如果需要沉浸式体验）
    // [self.navigationController setNavigationBarHidden:YES animated:animated];
}

// MARK: - Setup UI

- (void)setupUI {
    // TableView
    [self.view addSubview:self.tableView];
    [self.tableView mas_makeConstraints:^(MASConstraintMaker *make) {
        make.edges.equalTo(self.view);
    }];
    
    // 发布按钮（悬浮在右下角）
    [self.view addSubview:self.publishButton];
    [self.publishButton mas_makeConstraints:^(MASConstraintMaker *make) {
        make.right.equalTo(self.view).offset(-20);
        make.bottom.equalTo(self.view).offset(-100); // 避开 TabBar
        make.size.mas_equalTo(CGSizeMake(56, 56));
    }];
    
    NSLog(@"[NewMomentViewController] UI 设置完成");
}

// MARK: - Data Loading

- (void)loadData {
    if (self.isLoading) return;
    
    self.isLoading = YES;
    NSLog(@"[NewMomentViewController] 开始加载数据，页码: %ld", (long)self.currentPage);
    
    // TODO: 调用 API 加载动态数据
    // 暂时使用模拟数据
    dispatch_after(dispatch_time(DISPATCH_TIME_NOW, (int64_t)(1.0 * NSEC_PER_SEC)), dispatch_get_main_queue(), ^{
        // 模拟数据
        for (int i = 0; i < 10; i++) {
            NSDictionary *mockData = @{
                @"id": @(self.currentPage * 10 + i),
                @"content": [NSString stringWithFormat:@"这是第 %ld 页的第 %d 条动态", (long)self.currentPage, i],
                @"images": @[],
                @"likeCount": @(arc4random() % 100),
                @"commentCount": @(arc4random() % 50),
            };
            [self.dataSource addObject:mockData];
        }
        
        self.currentPage++;
        self.isLoading = NO;
        [self.tableView reloadData];
        [self.refreshControl endRefreshing];
        
        NSLog(@"[NewMomentViewController] 数据加载完成，当前数据量: %lu", (unsigned long)self.dataSource.count);
    });
}

- (void)onRefresh {
    self.currentPage = 0;
    [self.dataSource removeAllObjects];
    [self loadData];
}

// MARK: - Actions

- (void)onPublishButtonTapped {
    NSLog(@"[NewMomentViewController] 发布按钮点击");
    // TODO: 跳转到发布页面
    [self showAlertWithMessage:@"发布功能开发中"];
}

- (void)showAlertWithMessage:(NSString *)message {
    UIAlertController *alert = [UIAlertController alertControllerWithTitle:@"提示"
                                                                   message:message
                                                            preferredStyle:UIAlertControllerStyleAlert];
    [alert addAction:[UIAlertAction actionWithTitle:@"确定" style:UIAlertActionStyleDefault handler:nil]];
    [self presentViewController:alert animated:YES completion:nil];
}

// MARK: - UITableViewDataSource

- (NSInteger)tableView:(UITableView *)tableView numberOfRowsInSection:(NSInteger)section {
    return self.dataSource.count;
}

- (UITableViewCell *)tableView:(UITableView *)tableView cellForRowAtIndexPath:(NSIndexPath *)indexPath {
    NewMomentCell *cell = [tableView dequeueReusableCellWithIdentifier:@"NewMomentCell" forIndexPath:indexPath];
    
    if (indexPath.row < self.dataSource.count) {
        NSDictionary *data = self.dataSource[indexPath.row];
        [cell configureWithData:data];
    }
    
    return cell;
}

// MARK: - UITableViewDelegate

- (void)tableView:(UITableView *)tableView didSelectRowAtIndexPath:(NSIndexPath *)indexPath {
    [tableView deselectRowAtIndexPath:indexPath animated:YES];
    
    NSLog(@"[NewMomentViewController] 点击动态: %ld", (long)indexPath.row);
    // TODO: 跳转到详情页
    [self showAlertWithMessage:[NSString stringWithFormat:@"点击了第 %ld 条动态", (long)indexPath.row]];
}

- (CGFloat)tableView:(UITableView *)tableView heightForRowAtIndexPath:(NSIndexPath *)indexPath {
    return UITableViewAutomaticDimension;
}

- (CGFloat)tableView:(UITableView *)tableView estimatedHeightForRowAtIndexPath:(NSIndexPath *)indexPath {
    return 200;
}

// 滚动到底部时加载更多
- (void)scrollViewDidScroll:(UIScrollView *)scrollView {
    CGFloat offsetY = scrollView.contentOffset.y;
    CGFloat contentHeight = scrollView.contentSize.height;
    CGFloat screenHeight = scrollView.frame.size.height;
    
    if (offsetY > contentHeight - screenHeight - 100 && !self.isLoading) {
        [self loadData];
    }
}

// MARK: - Lazy Loading

- (UITableView *)tableView {
    if (!_tableView) {
        _tableView = [[UITableView alloc] initWithFrame:CGRectZero style:UITableViewStylePlain];
        _tableView.delegate = self;
        _tableView.dataSource = self;
        _tableView.separatorStyle = UITableViewCellSeparatorStyleNone;
        _tableView.backgroundColor = self.view.backgroundColor;
        _tableView.estimatedRowHeight = 200;
        _tableView.rowHeight = UITableViewAutomaticDimension;
        _tableView.showsVerticalScrollIndicator = NO;
        _tableView.contentInset = UIEdgeInsetsMake(10, 0, 10, 0);
        
        // 注册 Cell
        [_tableView registerClass:[NewMomentCell class] forCellReuseIdentifier:@"NewMomentCell"];
        
        // 添加下拉刷新
        _tableView.refreshControl = self.refreshControl;
    }
    return _tableView;
}

- (UIRefreshControl *)refreshControl {
    if (!_refreshControl) {
        _refreshControl = [[UIRefreshControl alloc] init];
        [_refreshControl addTarget:self action:@selector(onRefresh) forControlEvents:UIControlEventValueChanged];
    }
    return _refreshControl;
}

- (UIButton *)publishButton {
    if (!_publishButton) {
        _publishButton = [UIButton buttonWithType:UIButtonTypeCustom];
        _publishButton.backgroundColor = [UIColor colorWithRed:0.2 green:0.6 blue:0.86 alpha:1.0]; // 主色调
        _publishButton.layer.cornerRadius = 28;
        _publishButton.layer.shadowColor = [UIColor blackColor].CGColor;
        _publishButton.layer.shadowOffset = CGSizeMake(0, 2);
        _publishButton.layer.shadowOpacity = 0.3;
        _publishButton.layer.shadowRadius = 4;
        
        // 设置图标（暂时使用文字）
        [_publishButton setTitle:@"+" forState:UIControlStateNormal];
        _publishButton.titleLabel.font = [UIFont systemFontOfSize:32 weight:UIFontWeightLight];
        [_publishButton setTitleColor:[UIColor whiteColor] forState:UIControlStateNormal];
        
        [_publishButton addTarget:self action:@selector(onPublishButtonTapped) forControlEvents:UIControlEventTouchUpInside];
    }
    return _publishButton;
}

- (NSMutableArray *)dataSource {
    if (!_dataSource) {
        _dataSource = [NSMutableArray array];
    }
    return _dataSource;
}

@end