import 'package:flutter/material.dart';
import 'package:get/get.dart';
import 'package:flutter_screenutil/flutter_screenutil.dart';
import '../controllers/translation_controller.dart';
import '../controllers/translation_audiohistory_controller.dart';
import '../controllers/translation_detail_controller.dart';
import 'package:intl/intl.dart';
import 'package:flutter/services.dart';
import 'package:share_plus/share_plus.dart';
import '../../../core/theme/app_colors.dart';
import '../models/translation_models.dart';

class TranslationDetailView extends GetView<TranslationDetailController> {
  TranslationDetailView({Key? key}) : super(key: key);

  // 缓存文本，避免重复计算
  final _sourceTextCache = Rx<String?>(null);
  final _translatedTextCache = Rx<String?>(null);

  // 获取源文本（带缓存）
  String _getCombinedSourceText() {
    if (_sourceTextCache.value == null) {
      _sourceTextCache.value = controller.getCombinedSourceText();
    }
    return _sourceTextCache.value!;
  }

  // 获取翻译文本（带缓存）
  String _getCombinedTranslatedText() {
    if (_translatedTextCache.value == null) {
      _translatedTextCache.value = controller.getCombinedTranslatedText();
    }
    return _translatedTextCache.value!;
  }

  @override
  Widget build(BuildContext context) {
    final isDarkMode = Theme.of(context).brightness == Brightness.dark;

    return Scaffold(
      backgroundColor:
          isDarkMode ? AppColors.darkBackground : Color(0xFFF5F5F8),
      appBar: _buildAppBar(isDarkMode),
      body: Obx(() {
        // 显示加载状态
        if (controller.isLoading.value) {
          return Center(
            child: CircularProgressIndicator(
              color: isDarkMode ? AppColors.primary : Colors.blue,
            ),
          );
        }

        return Column(
          children: [
            _buildTabButtons(isDarkMode),
            _buildContentArea(isDarkMode),
          ],
        );
      }),
    );
  }

  // 构建应用栏
  PreferredSizeWidget _buildAppBar(bool isDarkMode) {
    return AppBar(
      backgroundColor:
          isDarkMode ? AppColors.cardBackground : Color(0xFFF5F5F8),
      elevation: 0,
      leading: IconButton(
        icon: Icon(
          Icons.arrow_back_ios,
          color: isDarkMode ? Colors.white : Colors.black,
          size: 20.sp,
        ),
        onPressed: () => Get.back(),
      ),
      // title: Text(
      //   'Detail',
      //   style: TextStyle(
      //     color: isDarkMode ? Colors.white : Colors.black,
      //     fontSize: 24.sp,
      //     fontWeight: FontWeight.bold,
      //   ),
      // ),
      centerTitle: true,
      actions: [
        IconButton(
          icon: Icon(
            Icons.share,
            color: isDarkMode ? Colors.white : Colors.black,
            size: 22.sp,
          ),
          onPressed: _shareContent,
        ),
      ],
    );
  }

  // 构建选项卡按钮
  Widget _buildTabButtons(bool isDarkMode) {
    return Padding(
      padding: EdgeInsets.symmetric(horizontal: 16.w, vertical: 12.h),
      child: Row(
        children: [
          Expanded(
            child: Obx(() => _buildTabButton(
                  title: 'originalRecord'.tr, // 原始记录
                  isSelected: controller.selectedTabIndex.value == 0,
                  onTap: () => controller.switchTab(0),
                  isDarkMode: isDarkMode,
                )),
          ),
          //屏蔽“记录摘要”，需要时开启
          // SizedBox(width: 12.w),
          // Expanded(
          //   child: Obx(() => _buildTabButton(
          //     title: 'recordSummary'.tr, // 记录摘要
          //     isSelected: controller.selectedTabIndex.value == 1,
          //     onTap: () => controller.switchTab(1),
          //     isDarkMode: isDarkMode,
          //   )),
          // ),
        ],
      ),
    );
  }

  // 构建内容区域
  Widget _buildContentArea(bool isDarkMode) {
    return Expanded(
      child: SingleChildScrollView(
        padding: EdgeInsets.symmetric(horizontal: 16.w),
        child: Obx(() {
          return Column(
            crossAxisAlignment: CrossAxisAlignment.start,
            children: [
              _buildTimestamp(isDarkMode),
              SizedBox(height: 8.h),

              // 根据选中的选项卡显示不同内容
              if (controller.selectedTabIndex.value == 0)
                ..._buildOriginalRecords(isDarkMode)
              else
                _buildSummaryWidget(isDarkMode),

              SizedBox(height: 24.h),
            ],
          );
        }),
      ),
    );
  }

  // 构建时间戳
  Widget _buildTimestamp(bool isDarkMode) {
    return Padding(
      padding: EdgeInsets.symmetric(horizontal: 8.w, vertical: 8.h),
      child: Text(
        DateFormat('yyyy-MM-dd HH:mm').format(controller.currentItem.timestamp),
        style: TextStyle(
          fontSize: 14.sp,
          fontWeight: FontWeight.w600,
          color: isDarkMode ? Colors.grey[400] : Colors.grey[600],
          letterSpacing: 1.0,
        ),
      ),
    );
  }

  // 构建原始记录列表
  List<Widget> _buildOriginalRecords(bool isDarkMode) {
    return controller.sessionItems
        .map((sessionItem) => _buildSessionItemWidget(sessionItem, isDarkMode))
        .toList();
  }

  // 构建选项卡按钮
  Widget _buildTabButton({
    required String title,
    required bool isSelected,
    required VoidCallback onTap,
    required bool isDarkMode,
  }) {
    return GestureDetector(
      onTap: onTap,
      child: Container(
        height: 40.h,
        decoration: BoxDecoration(
          color: isSelected
              ? (isDarkMode ? AppColors.primary : Colors.blue)
              : (isDarkMode ? AppColors.cardBackground : Colors.white),
          borderRadius: BorderRadius.circular(20.r),
          boxShadow: [
            BoxShadow(
              color: Colors.black.withAlpha(isDarkMode ? 30 : 8),
              blurRadius: 4,
              offset: Offset(0, 1),
            ),
          ],
        ),
        alignment: Alignment.center,
        child: Text(
          title,
          style: TextStyle(
            fontSize: 15.sp,
            fontWeight: isSelected ? FontWeight.bold : FontWeight.normal,
            color: isSelected
                ? Colors.white
                : (isDarkMode ? Colors.white : Colors.black87),
          ),
        ),
      ),
    );
  }

  // 构建会话详情中的翻译项
  Widget _buildSessionItemWidget(TranslationItem item, bool isDarkMode) {
    final context = Get.context!;
    return Container(
      margin: const EdgeInsets.only(bottom: 8),
      padding: const EdgeInsets.all(12),
      decoration: BoxDecoration(
        color: item.isIntermediate
            ? Colors.grey.withOpacity(0.1) // 中间结果使用浅灰色底色
            : (item.sourceLanguageCode ==
                    controller.currentItem.sourceLanguageCode
                ? Theme.of(context)
                    .colorScheme
                    .primary
                    .withOpacity(0.08) // 源语言匹配时使用主题色底色
                : Theme.of(context)
                    .colorScheme
                    .secondary
                    .withOpacity(0.08)), // 否则使用次要色底色
        borderRadius: BorderRadius.circular(12),
        border: Border.all(
          color: item.isIntermediate
              ? Colors.grey.withOpacity(0.2)
              : Colors.transparent,
          width: 1,
        ),
      ),
      child: Column(
        crossAxisAlignment: CrossAxisAlignment.start,
        children: [
          Row(
            crossAxisAlignment: CrossAxisAlignment.start,
            children: [
              // 源文本
              Expanded(
                  child: Text(
                item.sourceText,
                style: TextStyle(
                  fontSize: 16,
                  color: Theme.of(context).textTheme.bodyLarge?.color,
                ),
              )),
              // 删除按钮
              if (!item.isIntermediate)
                InkWell(
                  onTap: () => _showDeleteItemConfirmDialog(item),
                  borderRadius: BorderRadius.circular(6.r),
                  splashColor: Colors.red.withValues(alpha: 0.1),
                  highlightColor: Colors.red.withValues(alpha: 0.05),
                  child: Container(
                    padding: EdgeInsets.all(6.w),
                    child: Icon(
                      Icons.delete_outline,
                      size: 16.sp,
                      color: isDarkMode ? Colors.grey[500] : Colors.grey[400],
                    ),
                  ),
                ),
            ],
          ),
          if (item.translatedText.isNotEmpty) ...[
            const SizedBox(height: 8),
            // 翻译文本
            Text(
              item.translatedText,
              style: TextStyle(
                fontSize: 16,
                color: Theme.of(context).textTheme.bodyMedium?.color,
                fontWeight: FontWeight.w500,
              ),
            ),
          ],
          // 语言信息和操作按钮
          const SizedBox(height: 4),
          Row(
            mainAxisAlignment: MainAxisAlignment.spaceBetween,
            children: [
              Text(
                '${item.sourceLanguageName.tr} → ${item.targetLanguageName.tr}',
                style: TextStyle(
                  fontSize: 12,
                  color: Theme.of(context).textTheme.bodySmall?.color,
                ),
              ),
              Row(
                mainAxisSize: MainAxisSize.min,
                children: [
                  // 播放按钮
                  if (!item.isIntermediate) ...[
                    SizedBox(width: 8.w),
                    GestureDetector(
                      onTap: () => controller.playTranslationItem(item),
                      child: Icon(
                        Icons.volume_up,
                        size: 20.sp,
                        color: Theme.of(context).colorScheme.primary,
                      ),
                    ),
                  ],
                ],
              ),
            ],
          ),
        ],
      ),
    );
  }

  // 构建总结视图
  Widget _buildSummaryWidget(bool isDarkMode) {
    final String combinedSourceText = _getCombinedSourceText();

    return Column(
      children: [
        // 摘要内容容器
        _buildSummaryContainer(isDarkMode),

        // 提取摘要按钮
        Obx(() => _buildExtractSummaryButton(combinedSourceText, isDarkMode)),

        // 重新生成按钮
        Obx(() =>
            _buildRegenerateSummaryButton(combinedSourceText, isDarkMode)),
      ],
    );
  }

  // 构建摘要容器
  Widget _buildSummaryContainer(bool isDarkMode) {
    return Container(
      width: double.infinity,
      margin: EdgeInsets.only(bottom: 16.h),
      decoration: BoxDecoration(
        color: isDarkMode ? AppColors.cardBackground : Colors.white,
        borderRadius: BorderRadius.circular(16.r),
        boxShadow: [
          BoxShadow(
            color: Colors.black.withAlpha(isDarkMode ? 30 : 8),
            blurRadius: 8,
            offset: Offset(0, 2),
          ),
        ],
      ),
      child: Obx(() {
        if (controller.summaryResult.value.isEmpty) {
          return _buildEmptySummaryPrompt(isDarkMode);
        } else {
          return _buildSummaryContent(isDarkMode);
        }
      }),
    );
  }

  // 构建空摘要提示
  Widget _buildEmptySummaryPrompt(bool isDarkMode) {
    return Padding(
      padding: EdgeInsets.all(24.r),
      child: Center(
        child: Text(
          'clickToGenerateSummary'.tr, // 点击下方按钮生成会话摘要
          style: TextStyle(
            fontSize: 15.sp,
            color: isDarkMode ? Colors.grey[400] : Colors.grey[600],
            fontStyle: FontStyle.italic,
          ),
          textAlign: TextAlign.center,
        ),
      ),
    );
  }

  // 构建摘要内容
  Widget _buildSummaryContent(bool isDarkMode) {
    return Column(
      crossAxisAlignment: CrossAxisAlignment.start,
      children: [
        Padding(
          padding: EdgeInsets.all(20.r),
          child: Column(
            crossAxisAlignment: CrossAxisAlignment.start,
            children: [
              Text(
                'summaryContent'.tr, // 摘要内容
                style: TextStyle(
                  fontSize: 16.sp,
                  fontWeight: FontWeight.bold,
                  color: isDarkMode ? Colors.white : Colors.black,
                ),
              ),
              SizedBox(height: 12.h),
              Text(
                controller.summaryResult.value,
                style: TextStyle(
                  fontSize: 15.sp,
                  color: isDarkMode ? Colors.grey[400] : Colors.grey[800],
                  height: 1.5,
                ),
              ),
            ],
          ),
        ),
        Divider(
          height: 1,
          thickness: 0.5,
          color: isDarkMode ? Colors.grey[700] : Colors.grey[200],
        ),
        Padding(
          padding: EdgeInsets.symmetric(horizontal: 12.r, vertical: 8.r),
          child: Row(
            mainAxisAlignment: MainAxisAlignment.end,
            children: [
              // 播放按钮
              Material(
                color: Colors.transparent,
                child: InkWell(
                  onTap: () =>
                      controller.playText(controller.summaryResult.value),
                  borderRadius: BorderRadius.circular(20.r),
                  splashColor: isDarkMode
                      ? AppColors.primary.withOpacity(0.2)
                      : Colors.blue.withOpacity(0.2),
                  child: Padding(
                    padding: EdgeInsets.all(8.r),
                    child: Icon(
                      Icons.volume_up,
                      color: isDarkMode ? Colors.white : Colors.blue,
                      size: 18.sp,
                    ),
                  ),
                ),
              ),
              SizedBox(width: 12.w),
              // 复制按钮
              Material(
                color: Colors.transparent,
                child: InkWell(
                  onTap: _copySummaryToClipboard,
                  borderRadius: BorderRadius.circular(20.r),
                  splashColor: isDarkMode
                      ? AppColors.primary.withOpacity(0.2)
                      : Colors.blue.withOpacity(0.2),
                  child: Padding(
                    padding: EdgeInsets.all(8.r),
                    child: Icon(
                      Icons.copy,
                      color: isDarkMode ? Colors.white : Colors.blue,
                      size: 18.sp,
                    ),
                  ),
                ),
              ),
            ],
          ),
        ),
      ],
    );
  }

  // 复制摘要到剪贴板
  void _copySummaryToClipboard() {
    Clipboard.setData(ClipboardData(text: controller.summaryResult.value));
    Get.snackbar(
      'copied'.tr, // 已复制
      'summaryCopiledToClipboard'.tr, // 摘要已复制到剪贴板
      snackPosition: SnackPosition.BOTTOM,
      duration: Duration(seconds: 2),
    );
  }

  // 构建提取摘要按钮
  Widget _buildExtractSummaryButton(
      String combinedSourceText, bool isDarkMode) {
    final bool isDisabled = controller.isGeneratingSummary.value ||
        controller.summaryResult.value.isNotEmpty;

    return Container(
      width: double.infinity,
      margin: EdgeInsets.only(bottom: 16.h),
      child: ElevatedButton(
        onPressed:
            isDisabled ? null : () => _extractSummary(combinedSourceText),
        style: ElevatedButton.styleFrom(
          backgroundColor: isDarkMode ? AppColors.primary : Colors.blue,
          foregroundColor: Colors.white,
          padding: EdgeInsets.symmetric(vertical: 12.h),
          shape: RoundedRectangleBorder(
            borderRadius: BorderRadius.circular(16.r),
          ),
          elevation: 0,
          disabledBackgroundColor: controller.isGeneratingSummary.value
              ? isDarkMode
                  ? AppColors.primary.withAlpha(128)
                  : Colors.blue.withAlpha(128)
              : Colors.grey.withAlpha(128),
        ),
        child: controller.isGeneratingSummary.value
            ? _buildGeneratingIndicator(isDarkMode)
            : Text(
                controller.summaryResult.value.isEmpty
                    ? 'extractSummary'.tr
                    : 'summaryGenerated'.tr, // 提取摘要 : 已生成摘要
                style: TextStyle(
                  fontSize: 16.sp,
                  fontWeight: FontWeight.w600,
                ),
              ),
      ),
    );
  }

  // 构建生成中指示器
  Widget _buildGeneratingIndicator(bool isDarkMode) {
    return Row(
      mainAxisAlignment: MainAxisAlignment.center,
      children: [
        SizedBox(
          width: 20.w,
          height: 20.h,
          child: CircularProgressIndicator(
            color: Colors.white,
            strokeWidth: 2.0,
          ),
        ),
        SizedBox(width: 12.w),
        Text(
          'generating'.tr, // 生成中...
          style: TextStyle(
            fontSize: 16.sp,
            fontWeight: FontWeight.w600,
          ),
        ),
      ],
    );
  }

  // 构建重新生成按钮
  Widget _buildRegenerateSummaryButton(
      String combinedSourceText, bool isDarkMode) {
    if (controller.summaryResult.value.isEmpty ||
        controller.isGeneratingSummary.value) {
      return SizedBox.shrink();
    }

    return Container(
      width: double.infinity,
      margin: EdgeInsets.only(bottom: 16.h),
      child: OutlinedButton(
        onPressed: () => _extractSummary(combinedSourceText),
        style: OutlinedButton.styleFrom(
          foregroundColor: isDarkMode ? AppColors.primary : Colors.blue,
          side: BorderSide(color: isDarkMode ? AppColors.primary : Colors.blue),
          padding: EdgeInsets.symmetric(vertical: 12.h),
          shape: RoundedRectangleBorder(
            borderRadius: BorderRadius.circular(16.r),
          ),
        ),
        child: Text(
          'regenerate'.tr, // 重新生成
          style: TextStyle(
            fontSize: 16.sp,
            fontWeight: FontWeight.w600,
          ),
        ),
      ),
    );
  }

  // 提取摘要方法
  void _extractSummary(String text) async {
    final result = await controller.extractSummary(text);

    // 检查是否超时，如果超时则显示重试选项
    if (result.contains('超时')) {
      _showTimeoutDialog(text);
    }
  }

  // 显示超时对话框
  void _showTimeoutDialog(String text) {
    Get.dialog(
      AlertDialog(
        title: Text(
          'requestTimeout'.tr, // 请求超时
          style: TextStyle(
            fontSize: 18.sp,
            fontWeight: FontWeight.bold,
          ),
        ),
        content: Text(
          'summaryTimeoutMessage'.tr, // 生成摘要请求超时，可能是网络问题或服务器繁忙。
          style: TextStyle(
            fontSize: 16.sp,
          ),
        ),
        actions: [
          TextButton(
            onPressed: () => Get.back(),
            child: Text(
              'cancel'.tr, // 取消
              style: TextStyle(
                fontSize: 16.sp,
                color: Colors.grey[700],
              ),
            ),
          ),
          TextButton(
            onPressed: () {
              Get.back();
              // 使用延长的超时时间重试
              controller.retryExtractSummaryWithExtendedTimeout(text);
            },
            child: Text(
              'retry'.tr, // 重试
              style: TextStyle(
                fontSize: 16.sp,
                color: Colors.blue,
                fontWeight: FontWeight.bold,
              ),
            ),
          ),
        ],
        shape: RoundedRectangleBorder(
          borderRadius: BorderRadius.circular(12.r),
        ),
      ),
    );
  }

  // 显示删除单条记录确认对话框
  void _showDeleteItemConfirmDialog(TranslationItem item) {
    final isDarkMode = Get.isDarkMode;

    Get.dialog(
      AlertDialog(
        backgroundColor: isDarkMode ? AppColors.cardBackground : Colors.white,
        title: Text(
          'deleteTranslationRecord'.tr, // 删除翻译记录
          style: TextStyle(
            fontSize: 18.sp,
            fontWeight: FontWeight.bold,
            color: isDarkMode ? Colors.white : Colors.black,
          ),
        ),
        content: Column(
          mainAxisSize: MainAxisSize.min,
          crossAxisAlignment: CrossAxisAlignment.start,
          children: [
            Text(
              'deleteTranslationConfirm'.tr, // 确定要删除这条翻译记录吗？此操作无法撤销。
              style: TextStyle(
                fontSize: 16.sp,
                color: isDarkMode ? Colors.grey[300] : Colors.black87,
              ),
            ),
            SizedBox(height: 12.h),
            Container(
              padding: EdgeInsets.all(12.w),
              decoration: BoxDecoration(
                color: isDarkMode ? Colors.grey[800] : Colors.grey[100],
                borderRadius: BorderRadius.circular(8.r),
              ),
              child: Column(
                crossAxisAlignment: CrossAxisAlignment.start,
                children: [
                  Text(
                    item.sourceText,
                    style: TextStyle(
                      fontSize: 14.sp,
                      color: isDarkMode ? Colors.grey[300] : Colors.black87,
                    ),
                    maxLines: 2,
                    overflow: TextOverflow.ellipsis,
                  ),
                  if (item.translatedText.isNotEmpty) ...[
                    SizedBox(height: 4.h),
                    Text(
                      item.translatedText,
                      style: TextStyle(
                        fontSize: 14.sp,
                        color: isDarkMode ? Colors.grey[400] : Colors.black54,
                      ),
                      maxLines: 2,
                      overflow: TextOverflow.ellipsis,
                    ),
                  ],
                ],
              ),
            ),
          ],
        ),
        actions: [
          TextButton(
            onPressed: () => Get.back(),
            child: Text(
              'cancel'.tr,
              style: TextStyle(
                fontSize: 16.sp,
                color: isDarkMode ? Colors.grey[400] : Colors.grey[700],
              ),
            ),
          ),
          TextButton(
            onPressed: () {
              Get.back();
              // 删除指定的翻译记录
              controller.deleteTranslationItem(item);
            },
            child: Text(
              'confirm'.tr,
              style: TextStyle(
                fontSize: 16.sp,
                color: Colors.red,
                fontWeight: FontWeight.bold,
              ),
            ),
          ),
        ],
        shape: RoundedRectangleBorder(
          borderRadius: BorderRadius.circular(12.r),
        ),
      ),
    );
  }

  // 分享内容方法
  void _shareContent() {
    String shareText = '';

    if (controller.selectedTabIndex.value == 0) {
      // 分享原始记录
      final String sourceText = _getCombinedSourceText();
      final String translatedText = _getCombinedTranslatedText();
      shareText =
          '${'originalText'.tr}：\n$sourceText\n\n${'translatedText'.tr}：\n$translatedText'; // 原文：译文：
    } else {
      // 分享摘要
      if (controller.summaryResult.value.isNotEmpty) {
        shareText =
            '${'sessionSummary'.tr}：\n${controller.summaryResult.value}'; // 会话摘要：
      } else {
        Get.snackbar(
          'cannotShare'.tr, // 无法分享
          'generateSummaryFirst'.tr, // 请先生成摘要
          snackPosition: SnackPosition.BOTTOM,
          duration: Duration(seconds: 2),
        );
        return;
      }
    }

    // 调用系统分享
    Share.share(
      shareText,
      subject:
          '${'translationSessionRecord'.tr} - ${DateFormat('yyyy-MM-dd HH:mm').format(controller.currentItem.timestamp)}', // 翻译会话记录
    );
  }
}