deepvoice_client/lib/modules/picture_translation/views/picture_translation_view.dart

import 'dart:io';

import 'package:flutter/material.dart';
import 'package:flutter/services.dart';
import 'package:get/get.dart';
import 'package:flutter_screenutil/flutter_screenutil.dart';
import 'package:image_picker/image_picker.dart';
import 'package:photo_view/photo_view.dart'; // 新增：图片查看器

import '../controllers/picture_translation_controller.dart';
import '../models/picture_translation_models.dart';
import 'picture_translation_history_detail_view.dart';

class PictureTranslationView extends GetView<PictureTranslationController> {
  const PictureTranslationView({super.key});

  @override
  Widget build(BuildContext context) {
    final isDarkMode = Theme.of(context).brightness == Brightness.dark;
    return Scaffold(
      backgroundColor: Colors.grey[50],
      appBar: _buildAppBar(isDarkMode),
      body: SafeArea(
        child: Obx(() {
          return CustomScrollView(
            slivers: [
              SliverPadding(
                padding: EdgeInsets.all(16.w),
                sliver: SliverList(
                  delegate: SliverChildListDelegate([
                    _buildQuickActions(),
                    SizedBox(height: 16.h),
                    _buildLanguageSelector(),
                    SizedBox(height: 16.h),
                    _buildImageSection(),
                    SizedBox(height: 16.h),
                    if (controller.currentStep.value.status !=
                        ProcessingStatus.idle)
                      _buildProcessingIndicator(),
                    if (controller.sourceText.value.isNotEmpty ||
                        controller.translatedText.value.isNotEmpty) ...[
                      SizedBox(height: 16.h),
                      _buildResultsSection(),
                    ],
                    SizedBox(height: 16.h),
                    _buildHistorySection(),
                  ]),
                ),
              ),
            ],
          );
        }),
      ),
    );
  }

  /// 构建应用栏
  PreferredSizeWidget _buildAppBar(bool isDarkMode) {
    return AppBar(
      leading: IconButton(
        icon: Icon(
          Icons.arrow_back_ios,
          size: 20.w,
          color: isDarkMode ? Colors.white : Colors.black87,
        ),
        onPressed: () => Get.back(),
      ),
      centerTitle: true,
      title: Text(
        'pictureTranslation'.tr,
        style: TextStyle(
          fontSize: 18.sp,
          fontWeight: FontWeight.w600,
          color: isDarkMode ? Colors.white : Colors.black,
        ),
      ),
      backgroundColor: isDarkMode ? Colors.black : Colors.white,
      foregroundColor: isDarkMode ? Colors.white : Colors.black87,
      elevation: 0,
      actions: [
        IconButton(
          icon: const Icon(Icons.history),
          onPressed: _showHistoryBottomSheet,
          tooltip: '历史记录',
        ),
        PopupMenuButton<String>(
          onSelected: _handleMenuAction,
          itemBuilder: (context) => [
            const PopupMenuItem(
              value: 'clear',
              child: Row(
                children: [
                  Icon(Icons.clear_all, size: 20),
                  SizedBox(width: 8),
                  Text('清空结果'),
                ],
              ),
            ),
            const PopupMenuItem(
              value: 'settings',
              child: Row(
                children: [
                  Icon(Icons.settings, size: 20),
                  SizedBox(width: 8),
                  Text('设置'),
                ],
              ),
            ),
          ],
        ),
      ],
    );
  }

  /// 构建快速操作区域
  Widget _buildQuickActions() {
    return Container(
      padding: EdgeInsets.all(16.w),
      decoration: BoxDecoration(
        color: Colors.white,
        borderRadius: BorderRadius.circular(12.r),
        boxShadow: [
          BoxShadow(
            color: Colors.black.withOpacity(0.05),
            blurRadius: 10,
            offset: const Offset(0, 2),
          ),
        ],
      ),
      child: Column(
        crossAxisAlignment: CrossAxisAlignment.start,
        children: [
          Text(
            '选择图片来源',
            style: TextStyle(
              fontSize: 16.sp,
              fontWeight: FontWeight.w600,
              color: Colors.black87,
            ),
          ),
          SizedBox(height: 12.h),
          Row(
            children: [
              Expanded(
                child: _buildActionButton(
                  icon: Icons.photo_library,
                  label: '相册',
                  onTap: controller.pickFromGallery,
                  color: Colors.blue,
                ),
              ),
              SizedBox(width: 12.w),
              Expanded(
                child: _buildActionButton(
                  icon: Icons.camera_alt,
                  label: '拍照',
                  onTap: controller.pickFromCamera,
                  color: Colors.green,
                ),
              ),
            ],
          ),
        ],
      ),
    );
  }

  /// 构建操作按钮
  Widget _buildActionButton({
    required IconData icon,
    required String label,
    required VoidCallback onTap,
    required Color color,
  }) {
    return Material(
      color: color.withOpacity(0.1),
      borderRadius: BorderRadius.circular(8.r),
      child: InkWell(
        onTap: controller.isProcessing.value ? null : onTap,
        borderRadius: BorderRadius.circular(8.r),
        child: Container(
          padding: EdgeInsets.symmetric(vertical: 16.h),
          child: Column(
            children: [
              Icon(
                icon,
                color: color,
                size: 24.sp,
              ),
              SizedBox(height: 4.h),
              Text(
                label,
                style: TextStyle(
                  fontSize: 14.sp,
                  fontWeight: FontWeight.w500,
                  color: color,
                ),
              ),
            ],
          ),
        ),
      ),
    );
  }

  /// 构建语言选择器
  Widget _buildLanguageSelector() {
    return Container(
      padding: EdgeInsets.all(16.w),
      decoration: BoxDecoration(
        color: Colors.white,
        borderRadius: BorderRadius.circular(12.r),
        boxShadow: [
          BoxShadow(
            color: Colors.black.withOpacity(0.05),
            blurRadius: 10,
            offset: const Offset(0, 2),
          ),
        ],
      ),
      child: Column(
        crossAxisAlignment: CrossAxisAlignment.start,
        children: [
          Text(
            '语言设置',
            style: TextStyle(
              fontSize: 16.sp,
              fontWeight: FontWeight.w600,
              color: Colors.black87,
            ),
          ),
          SizedBox(height: 12.h),
          Row(
            children: [
              Expanded(
                child: _buildLangTile(
                  '源语言',
                  controller.sourceLanguageChineseName.value,
                  () => _showLangDialog(true),
                  Colors.blue,
                ),
              ),
              SizedBox(width: 8.w),
              IconButton(
                onPressed: controller.swapLanguages,
                icon: const Icon(Icons.swap_horiz),
                tooltip: '交换语言',
              ),
              SizedBox(width: 8.w),
              Expanded(
                child: _buildLangTile(
                  '目标语言',
                  controller.targetLanguageChineseName.value,
                  () => _showLangDialog(false),
                  Colors.green,
                ),
              ),
            ],
          ),
        ],
      ),
    );
  }

  Widget _buildLangTile(
      String label, String value, VoidCallback onTap, Color color) {
    return InkWell(
      onTap: onTap,
      borderRadius: BorderRadius.circular(8.r),
      child: Container(
        padding: EdgeInsets.symmetric(horizontal: 12.w, vertical: 12.h),
        decoration: BoxDecoration(
          borderRadius: BorderRadius.circular(8.r),
          border: Border.all(color: color.withOpacity(0.3)),
          color: color.withOpacity(0.05),
        ),
        child: Column(
          crossAxisAlignment: CrossAxisAlignment.start,
          children: [
            Text(
              label,
              style: TextStyle(fontSize: 12.sp, color: Colors.grey[600]),
            ),
            SizedBox(height: 4.h),
            Text(
              value,
              style: TextStyle(
                fontSize: 14.sp,
                fontWeight: FontWeight.w600,
                color: color,
              ),
              maxLines: 1,
              overflow: TextOverflow.ellipsis,
            ),
          ],
        ),
      ),
    );
  }

  Future<void> _showLangDialog(bool isSource) async {
    final langs = controller.languageManager.getAllChineseNames();
    final selected = await Get.dialog<String>(
      SimpleDialog(
        title: Text(isSource ? '选择源语言' : '选择目标语言'),
        children: [
          SizedBox(
            width: 320.w,
            height: 420.h,
            child: ListView.builder(
              itemCount: langs.length,
              itemBuilder: (_, i) => ListTile(
                title: Text(langs[i]),
                onTap: () => Get.back(result: langs[i]),
              ),
            ),
          )
        ],
      ),
    );
    if (selected != null) {
      if (isSource) {
        controller.setSourceLanguage(selected);
      } else {
        controller.setTargetLanguage(selected);
      }
    }
  }

  Widget _buildImageSection() {
    return Container(
      decoration: BoxDecoration(
        color: Colors.white,
        borderRadius: BorderRadius.circular(12.r),
        boxShadow: [
          BoxShadow(
            color: Colors.black.withOpacity(0.05),
            blurRadius: 10,
            offset: const Offset(0, 2),
          ),
        ],
      ),
      child: Column(
        crossAxisAlignment: CrossAxisAlignment.start,
        children: [
          Padding(
            padding: EdgeInsets.all(16.w),
            child: Text(
              '图片预览',
              style: TextStyle(
                fontSize: 16.sp,
                fontWeight: FontWeight.w600,
                color: Colors.black87,
              ),
            ),
          ),
          _buildImagePreview(),
        ],
      ),
    );
  }

  Widget _buildProcessingIndicator() {
    final step = controller.currentStep.value;
    return Container(
      padding: EdgeInsets.all(16.w),
      decoration: BoxDecoration(
        color: Colors.white,
        borderRadius: BorderRadius.circular(12.r),
        boxShadow: [
          BoxShadow(
            color: Colors.black.withOpacity(0.05),
            blurRadius: 10,
            offset: const Offset(0, 2),
          ),
        ],
      ),
      child: Column(
        crossAxisAlignment: CrossAxisAlignment.start,
        children: [
          Row(
            children: [
              _buildStatusIcon(step.status),
              SizedBox(width: 12.w),
              Expanded(
                child: Column(
                  crossAxisAlignment: CrossAxisAlignment.start,
                  children: [
                    Text(
                      step.title,
                      style: TextStyle(
                        fontSize: 16.sp,
                        fontWeight: FontWeight.w600,
                        color: Colors.black87,
                      ),
                    ),
                    if (step.description.isNotEmpty) ...[
                      SizedBox(height: 4.h),
                      Text(
                        step.description,
                        style:
                            TextStyle(fontSize: 14.sp, color: Colors.grey[600]),
                      ),
                    ],
                  ],
                ),
              ),
            ],
          ),
          if (step.progress > 0 && step.status != ProcessingStatus.error) ...[
            SizedBox(height: 12.h),
            LinearProgressIndicator(
              value: step.progress,
              backgroundColor: Colors.grey[200],
              valueColor:
                  AlwaysStoppedAnimation<Color>(_getStatusColor(step.status)),
            ),
          ],
        ],
      ),
    );
  }

  Widget _buildStatusIcon(ProcessingStatus status) {
    switch (status) {
      case ProcessingStatus.picking:
      case ProcessingStatus.recognizing:
      case ProcessingStatus.translating:
      case ProcessingStatus.saving:
        return SizedBox(
          width: 20.w,
          height: 20.w,
          child: CircularProgressIndicator(
            strokeWidth: 2,
            color: _getStatusColor(status),
          ),
        );
      case ProcessingStatus.error:
        return Icon(Icons.error_outline, color: Colors.red, size: 20.sp);
      case ProcessingStatus.idle:
        return Icon(Icons.check_circle_outline,
            color: Colors.green, size: 20.sp);
    }
  }

  Color _getStatusColor(ProcessingStatus status) {
    switch (status) {
      case ProcessingStatus.picking:
        return Colors.blue;
      case ProcessingStatus.recognizing:
        return Colors.orange;
      case ProcessingStatus.translating:
        return Colors.purple;
      case ProcessingStatus.saving:
        return Colors.green;
      case ProcessingStatus.error:
        return Colors.red;
      case ProcessingStatus.idle:
        return Colors.grey;
    }
  }

  Widget _buildResultsSection() {
    return Container(
      decoration: BoxDecoration(
        color: Colors.white,
        borderRadius: BorderRadius.circular(12.r),
        boxShadow: [
          BoxShadow(
            color: Colors.black.withOpacity(0.05),
            blurRadius: 10,
            offset: const Offset(0, 2),
          ),
        ],
      ),
      child: Column(
        crossAxisAlignment: CrossAxisAlignment.start,
        children: [
          Padding(
            padding: EdgeInsets.all(16.w),
            child: Text(
              '翻译结果',
              style: TextStyle(
                fontSize: 16.sp,
                fontWeight: FontWeight.w600,
                color: Colors.black87,
              ),
            ),
          ),
          if (controller.sourceText.value.isNotEmpty)
            _buildTextCard(
              '识别结果',
              controller.sourceText.value,
              controller.sourceLanguageChineseName.value,
              Colors.blue,
            ),
          if (controller.translatedText.value.isNotEmpty)
            _buildTextCard(
              '翻译结果',
              controller.translatedText.value,
              controller.targetLanguageChineseName.value,
              Colors.green,
            ),
          if (controller.translatedImageBytes.value != null) ...[
            Padding(
              padding: EdgeInsets.symmetric(horizontal: 16.w),
              child: Text(
                '翻译后的图片预览',
                style: TextStyle(
                  fontSize: 14.sp,
                  fontWeight: FontWeight.w600,
                  color: Colors.black87,
                ),
              ),
            ),
            SizedBox(height: 8.h),
            Container(
              height: 200.h,
              margin:
                  EdgeInsets.symmetric(horizontal: 16.w).copyWith(bottom: 16.h),
              decoration: BoxDecoration(
                color: Colors.grey[100],
                borderRadius: BorderRadius.circular(8.r),
                border: Border.all(color: Colors.grey[300]!),
              ),
              child: GestureDetector(
                onTap: () => _openImageViewer(
                  MemoryImage(controller.translatedImageBytes.value!),
                ),
                child: ClipRRect(
                  borderRadius: BorderRadius.circular(8.r),
                  child: Image.memory(
                    controller.translatedImageBytes.value!,
                    fit: BoxFit.cover,
                    width: double.infinity,
                    errorBuilder: (context, error, stackTrace) {
                      return Center(
                        child: Column(
                          mainAxisAlignment: MainAxisAlignment.center,
                          children: [
                            Icon(Icons.error_outline,
                                size: 48.sp, color: Colors.red[400]),
                            SizedBox(height: 8.h),
                            Text(
                              '翻译图片加载失败',
                              style: TextStyle(
                                  fontSize: 14.sp, color: Colors.red[600]),
                            ),
                          ],
                        ),
                      );
                    },
                  ),
                ),
              ),
            ),
          ],
        ],
      ),
    );
  }

  Widget _buildTextCard(
      String title, String content, String language, Color color) {
    return Container(
      margin: EdgeInsets.symmetric(horizontal: 16.w).copyWith(bottom: 16.h),
      padding: EdgeInsets.all(16.w),
      decoration: BoxDecoration(
        color: color.withOpacity(0.05),
        borderRadius: BorderRadius.circular(8.r),
        border: Border.all(color: color.withOpacity(0.2)),
      ),
      child: Column(
        crossAxisAlignment: CrossAxisAlignment.start,
        children: [
          Row(
            mainAxisAlignment: MainAxisAlignment.spaceBetween,
            children: [
              Text(
                '$title ($language)',
                style: TextStyle(
                  fontSize: 14.sp,
                  fontWeight: FontWeight.w600,
                  color: color,
                ),
              ),
              IconButton(
                icon: Icon(Icons.copy, size: 18.sp, color: color),
                onPressed: () {
                  Clipboard.setData(ClipboardData(text: content));
                  Get.snackbar('成功', '已复制到剪切板');
                },
                padding: EdgeInsets.zero,
                constraints: const BoxConstraints(),
                tooltip: '复制',
              ),
            ],
          ),
          SizedBox(height: 8.h),
          SelectableText(
            content,
            style:
                TextStyle(fontSize: 15.sp, color: Colors.black87, height: 1.4),
          ),
        ],
      ),
    );
  }

  Widget _buildHistorySection() {
    return Container(
      decoration: BoxDecoration(
        color: Colors.white,
        borderRadius: BorderRadius.circular(12.r),
        boxShadow: [
          BoxShadow(
            color: Colors.black.withOpacity(0.05),
            blurRadius: 10,
            offset: const Offset(0, 2),
          ),
        ],
      ),
      child: Column(
        crossAxisAlignment: CrossAxisAlignment.start,
        children: [
          Padding(
            padding: EdgeInsets.all(16.w),
            child: Row(
              mainAxisAlignment: MainAxisAlignment.spaceBetween,
              children: [
                Text(
                  '最近翻译',
                  style: TextStyle(
                    fontSize: 16.sp,
                    fontWeight: FontWeight.w600,
                    color: Colors.black87,
                  ),
                ),
                TextButton(
                  onPressed: _showHistoryBottomSheet,
                  child: const Text('查看全部'),
                ),
              ],
            ),
          ),
          if (controller.historyList.isEmpty)
            Padding(
              padding:
                  EdgeInsets.symmetric(horizontal: 16.w).copyWith(bottom: 16.h),
              child: Text(
                '暂无翻译记录',
                style: TextStyle(fontSize: 14.sp, color: Colors.grey[600]),
              ),
            )
          else
            ...controller.historyList
                .take(3)
                .map((item) => _buildHistoryItem(item))
                .toList(),
        ],
      ),
    );
  }

  Widget _buildHistoryItem(PictureTranslationHistory item) {
    return ListTile(
      leading: ClipRRect(
        borderRadius: BorderRadius.circular(4.r),
        child: Container(
          width: 40.w,
          height: 40.w,
          color: Colors.grey[200],
          child: Icon(Icons.image, color: Colors.grey[400]),
        ),
      ),
      title: Text(
        item.sourceText,
        maxLines: 1,
        overflow: TextOverflow.ellipsis,
        style: TextStyle(fontSize: 14.sp),
      ),
      subtitle: Text(
        '${item.sourceLanguageName} → ${item.targetLanguageName}',
        style: TextStyle(fontSize: 12.sp, color: Colors.grey[600]),
      ),
      trailing: Text(
        _formatTime(item.timestamp),
        style: TextStyle(fontSize: 12.sp, color: Colors.grey[500]),
      ),
      onTap: () => _showHistoryDetail(item),
    );
  }

  void _showHistoryBottomSheet() {
    Get.bottomSheet(
      Container(
        height: 600.h,
        decoration: BoxDecoration(
          color: Colors.white,
          borderRadius: BorderRadius.vertical(top: Radius.circular(20.r)),
        ),
        child: Column(
          children: [
            Container(
              padding: EdgeInsets.all(16.w),
              child: Row(
                mainAxisAlignment: MainAxisAlignment.spaceBetween,
                children: [
                  Text(
                    '翻译历史',
                    style:
                        TextStyle(fontSize: 18.sp, fontWeight: FontWeight.bold),
                  ),
                  IconButton(
                    onPressed: () => Get.back(),
                    icon: const Icon(Icons.close),
                  ),
                ],
              ),
            ),
            const Divider(height: 1),
            Expanded(
              child: Obx(() {
                if (controller.historyList.isEmpty) {
                  return Center(
                    child: Text(
                      '暂无翻译记录',
                      style:
                          TextStyle(fontSize: 16.sp, color: Colors.grey[600]),
                    ),
                  );
                }
                return ListView.separated(
                  itemCount: controller.historyList.length,
                  separatorBuilder: (context, index) =>
                      const Divider(height: 1),
                  itemBuilder: (context, index) {
                    final item = controller.historyList[index];
                    return _buildHistoryItem(item);
                  },
                );
              }),
            ),
          ],
        ),
      ),
      isScrollControlled: true,
    );
  }

  void _handleMenuAction(String action) {
    switch (action) {
      case 'clear':
        controller.reset();
        break;
      case 'settings':
        _showSettingsDialog();
        break;
    }
  }

  void _showHistoryDetail(PictureTranslationHistory item) {
    Get.to(() => PictureTranslationHistoryDetailView(item: item));
  }

  String _formatTime(DateTime timestamp) {
    final now = DateTime.now();
    final difference = now.difference(timestamp);

    if (difference.inDays > 0) {
      return '${difference.inDays}天前';
    } else if (difference.inHours > 0) {
      return '${difference.inHours}小时前';
    } else if (difference.inMinutes > 0) {
      return '${difference.inMinutes}分钟前';
    } else {
      return '刚刚';
    }
  }

  void _showSettingsDialog() {
    Get.dialog(
      AlertDialog(
        title: const Text('设置'),
        content: Column(
          mainAxisSize: MainAxisSize.min,
          children: [
            ListTile(
              leading: const Icon(Icons.photo_size_select_actual),
              title: const Text('图片质量'),
              subtitle:
                  Obx(() => Text('当前: ${controller.imageQuality.value}%')),
              onTap: () {
                Get.back();
                _showImageQualityDialog();
              },
            ),
            ListTile(
              leading: const Icon(Icons.photo_size_select_large),
              title: const Text('最大尺寸'),
              subtitle:
                  Obx(() => Text('当前: ${controller.maxImageSize.value}px')),
              onTap: () {
                Get.back();
                _showImageSizeDialog();
              },
            ),
          ],
        ),
        actions: [
          TextButton(
            onPressed: () => Get.back(),
            child: const Text('关闭'),
          ),
        ],
      ),
    );
  }

  void _showImageQualityDialog() {
    Get.dialog(
      AlertDialog(
        title: const Text('设置图片质量'),
        content: Obx(() => Column(
              mainAxisSize: MainAxisSize.min,
              children: [
                Text('当前质量: ${controller.imageQuality.value}%'),
                Slider(
                  value: controller.imageQuality.value.toDouble(),
                  min: 50,
                  max: 100,
                  divisions: 10,
                  onChanged: (value) {
                    controller.imageQuality.value = value.toInt();
                  },
                ),
              ],
            )),
        actions: [
          TextButton(
            onPressed: () => Get.back(),
            child: const Text('确定'),
          ),
        ],
      ),
    );
  }

  void _showImageSizeDialog() {
    final sizes = [1280, 1920, 2560, 3840];
    Get.dialog(
      AlertDialog(
        title: const Text('设置最大尺寸'),
        content: Column(
          mainAxisSize: MainAxisSize.min,
          children: sizes
              .map((size) => RadioListTile<int>(
                    title: Text('${size}px'),
                    value: size,
                    groupValue: controller.maxImageSize.value,
                    onChanged: (value) {
                      if (value != null) {
                        controller.maxImageSize.value = value;
                        Get.back();
                      }
                    },
                  ))
              .toList(),
        ),
        actions: [
          TextButton(
            onPressed: () => Get.back(),
            child: const Text('取消'),
          ),
        ],
      ),
    );
  }

  void _showClearHistoryDialog() {
    Get.dialog(
      AlertDialog(
        title: const Text('清空历史'),
        content: const Text('确定要清空所有翻译历史吗？此操作不可撤销。'),
        actions: [
          TextButton(
            onPressed: () => Get.back(),
            child: const Text('取消'),
          ),
          TextButton(
            onPressed: () {
              controller.clearHistory();
              Get.back();
            },
            child: Text('确定', style: TextStyle(color: Colors.red)),
          ),
        ],
      ),
    );
  }

  Widget _buildImagePreview() {
    final file = controller.pickedImageFile.value;
    return Container(
      height: 200.h,
      margin: EdgeInsets.symmetric(horizontal: 16.w).copyWith(bottom: 16.h),
      decoration: BoxDecoration(
        color: Colors.grey[100],
        borderRadius: BorderRadius.circular(8.r),
        border: Border.all(color: Colors.grey[300]!),
      ),
      child: file == null
          ? Center(
              child: Column(
                mainAxisAlignment: MainAxisAlignment.center,
                children: [
                  Icon(Icons.image_outlined,
                      size: 48.sp, color: Colors.grey[400]),
                  SizedBox(height: 8.h),
                  Text(
                    '请选择图片',
                    style: TextStyle(fontSize: 14.sp, color: Colors.grey[600]),
                  ),
                ],
              ),
            )
          : ClipRRect(
              borderRadius: BorderRadius.circular(8.r),
              child: Image.file(
                file,
                fit: BoxFit.cover,
                width: double.infinity,
                errorBuilder: (context, error, stackTrace) {
                  return Center(
                    child: Column(
                      mainAxisAlignment: MainAxisAlignment.center,
                      children: [
                        Icon(Icons.error_outline,
                            size: 48.sp, color: Colors.red[400]),
                        SizedBox(height: 8.h),
                        Text(
                          '图片加载失败',
                          style: TextStyle(
                              fontSize: 14.sp, color: Colors.red[600]),
                        ),
                      ],
                    ),
                  );
                },
              ),
            ),
    );
  }

  Widget _buildSourceTextBox() {
    return _buildTextBox('识别结果', controller.sourceText.value);
  }

  Widget _buildTranslatedTextBox() {
    return _buildTextBox('翻译结果', controller.translatedText.value);
  }

  Widget _buildTextBox(String title, String content) {
    return Container(
      padding: EdgeInsets.all(12.w),
      decoration: BoxDecoration(
        borderRadius: BorderRadius.circular(8.r),
        border: Border.all(color: Colors.grey.shade300),
      ),
      child: Column(
        crossAxisAlignment: CrossAxisAlignment.start,
        children: [
          Text(title, style: const TextStyle(fontWeight: FontWeight.bold)),
          SizedBox(height: 8.h),
          Text(content.isEmpty ? '—' : content),
        ],
      ),
    );
  }
}

void _openImageViewer(ImageProvider provider) {
  Get.to(() => Scaffold(
        body: Container(
          color: Colors.black,
          child: GestureDetector(
            onTap: () => Get.back(), // 点击退出
            child: PhotoView(
              imageProvider: provider,
              minScale: PhotoViewComputedScale.contained,
              maxScale: PhotoViewComputedScale.covered * 2,
              backgroundDecoration: const BoxDecoration(color: Colors.black),
            ),
          ),
        ),
      ));
}