/// 时间: 2025-03-22
/// 功能: 诗词主页（参考微信小程序布局）
/// 介绍: 展示诗词内容，支持点赞、收藏、分享等功能，参考wxpm小程序的index页面布局
/// 最新变化: 2026-04-02 支持深色模式，添加底部内边距适配液态玻璃导航栏

import 'package:flutter/material.dart';
import 'package:get/get.dart';

import '../../constants/app_constants.dart';
import '../../config/app_config.dart';
import '../../../services/get/home_controller.dart';
import '../../../services/get/theme_controller.dart';
import 'home_part.dart';
import 'set/home_components.dart';
import 'set/home-load.dart';
import 'set/home-set.dart';

class HomePage extends StatefulWidget {
  const HomePage({super.key});

  @override
  State<HomePage> createState() => _HomePageState();
}

class _HomePageState extends State<HomePage> {
  final GlobalKey repaintKey = GlobalKey();
  final SecondaryButtonsManager _secondaryButtonsManager =
      SecondaryButtonsManager();
  final FloatingButtonsVisibilityManager _floatingButtonsVisibilityManager =
      FloatingButtonsVisibilityManager();

  @override
  void initState() {
    super.initState();
    _secondaryButtonsManager.init();
    _floatingButtonsVisibilityManager.init();
  }

  @override
  void dispose() {
    _floatingButtonsVisibilityManager.dispose();
    super.dispose();
  }

  @override
  Widget build(BuildContext context) {
    Get.lazyPut(() => HomeController());
    final controller = Get.find<HomeController>();
    final themeController = Get.find<ThemeController>();

    return Obx(() {
      final isDark = themeController.isDarkModeRx.value;
      return Scaffold(
        backgroundColor: isDark ? const Color(0xFF121212) : Colors.grey[50],
        body: SafeArea(child: _buildBody(controller, isDark)),
      );
    });
  }

  Widget _buildBody(HomeController controller, bool isDark) {
    if (controller.loading.value) {
      return LoadingWidget(isDark: isDark);
    }

    if (controller.errorMessage.value.isNotEmpty) {
      return CustomErrorWidget(
        errorMessage: controller.errorMessage.value,
        onRetry: controller.loadPoetry,
        isDark: isDark,
      );
    }

    if (!PoetryDataUtils.isValidPoetryData(controller.poetryData.value)) {
      return EmptyWidget(isDark: isDark);
    }

    return _buildContent(controller, isDark);
  }

  Widget _buildContent(HomeController controller, bool isDark) {
    return FutureBuilder<bool>(
      future: OfflineDataManager().isOnline(),
      builder: (context, snapshot) {
        final isOnline = snapshot.data ?? true;

        return Stack(
          children: [
            RefreshIndicator(
              onRefresh: controller.refreshPoetry,
              child: SingleChildScrollView(
                physics: const AlwaysScrollableScrollPhysics(),
                // 添加底部内边距，让内容延伸到导航栏下方，实现玻璃效果
                padding: EdgeInsets.only(
                  top: 48,
                  bottom: AppConfig.liquidGlassTotalHeight + 16,
                ),
                child: Column(
                  children: [
                    Obx(
                      () => PoetryCard(
                        poetryData: controller.poetryData.value!,
                        keywordList: List.from(controller.keywordList),
                        onTap: controller.loadNextPoetry,
                        sectionLoadingStates: Map.from(
                          controller.sectionLoadingStates,
                        ),
                        repaintKey: repaintKey,
                        isDark: isDark,
                      ),
                    ),
                    const SizedBox(height: 160),
                  ],
                ),
              ),
            ),
            // 收起/恢复按钮 - 右上角（与下方分享按钮对齐）
            Positioned(
              top: 8,
              right: 16,
              child: FloatingButtonsToggleButton(
                manager: _floatingButtonsVisibilityManager,
                isDark: isDark,
              ),
            ),
            // 左侧按钮组 - 固定位置，紧贴底栏bar
            ValueListenableBuilder<bool>(
              valueListenable:
                  _floatingButtonsVisibilityManager.flashingNotifier,
              builder: (context, isFlashing, child) {
                return ValueListenableBuilder<bool>(
                  valueListenable:
                      _floatingButtonsVisibilityManager.visibleNotifier,
                  builder: (context, isVisible, child) {
                    if (!isVisible && !isFlashing) {
                      return const SizedBox.shrink();
                    }
                    return ValueListenableBuilder<bool>(
                      valueListenable: _secondaryButtonsManager.hiddenNotifier,
                      builder: (context, isHidden, child) {
                        if (isHidden) return const SizedBox.shrink();
                        return Positioned(
                          left: 16,
                          bottom:
                              AppConfig.liquidGlassHeight +
                              AppConfig.liquidGlassBottomMargin +
                              68,
                          child: FloatingPreviousButton(
                            onPrevious: controller.loadPreviousPoetry,
                            isDark: isDark,
                          ),
                        );
                      },
                    );
                  },
                );
              },
            ),
            ValueListenableBuilder<bool>(
              valueListenable:
                  _floatingButtonsVisibilityManager.flashingNotifier,
              builder: (context, isFlashing, child) {
                return ValueListenableBuilder<bool>(
                  valueListenable:
                      _floatingButtonsVisibilityManager.visibleNotifier,
                  builder: (context, isVisible, child) {
                    if (!isVisible && !isFlashing) {
                      return const SizedBox.shrink();
                    }
                    return Positioned(
                      left: 16,
                      bottom:
                          AppConfig.liquidGlassHeight +
                          AppConfig.liquidGlassBottomMargin +
                          8,
                      child: FloatingNextButton(
                        onNext: controller.loadNextPoetry,
                        isDark: isDark,
                      ),
                    );
                  },
                );
              },
            ),
            // 右侧按钮组 - 固定位置，紧贴底栏bar
            ValueListenableBuilder<bool>(
              valueListenable:
                  _floatingButtonsVisibilityManager.flashingNotifier,
              builder: (context, isFlashing, child) {
                return ValueListenableBuilder<bool>(
                  valueListenable:
                      _floatingButtonsVisibilityManager.visibleNotifier,
                  builder: (context, isVisible, child) {
                    if (!isVisible && !isFlashing) {
                      return const SizedBox.shrink();
                    }
                    return ValueListenableBuilder<bool>(
                      valueListenable: _secondaryButtonsManager.hiddenNotifier,
                      builder: (context, isHidden, child) {
                        if (isHidden) return const SizedBox.shrink();
                        return Positioned(
                          right: 16,
                          bottom:
                              AppConfig.liquidGlassHeight +
                              AppConfig.liquidGlassBottomMargin +
                              68,
                          child: FloatingShareButton(
                            onShare: () async {
                              if (controller.poetryData.value != null) {
                                await ShareImageUtils.captureAndShare(
                                  context,
                                  repaintKey,
                                  subject: controller.poetryData.value!.name,
                                );
                              }
                            },
                            isDark: isDark,
                          ),
                        );
                      },
                    );
                  },
                );
              },
            ),
            if (isOnline)
              ValueListenableBuilder<bool>(
                valueListenable:
                    _floatingButtonsVisibilityManager.flashingNotifier,
                builder: (context, isFlashing, child) {
                  return ValueListenableBuilder<bool>(
                    valueListenable:
                        _floatingButtonsVisibilityManager.visibleNotifier,
                    builder: (context, isVisible, child) {
                      if (!isVisible && !isFlashing) {
                        return const SizedBox.shrink();
                      }
                      return Positioned(
                        right: 16,
                        bottom:
                            AppConfig.liquidGlassHeight +
                            AppConfig.liquidGlassBottomMargin +
                            8,
                        child: Obx(
                          () => FloatingLikeButton(
                            isLiked: controller.isLiked.value,
                            isLoadingLike: controller.isLoadingLike.value,
                            onToggleLike: controller.toggleLike,
                            isDark: isDark,
                          ),
                        ),
                      );
                    },
                  );
                },
              ),
          ],
        );
      },
    );
  }
}