import 'dart:convert';
import 'dart:io';

import 'package:flutter/material.dart';
import 'package:flutter_riverpod/flutter_riverpod.dart';
import 'package:flutter_screenutil/flutter_screenutil.dart';
import 'package:go_router/go_router.dart';
import 'package:image/image.dart' as img;
import 'package:image_picker/image_picker.dart';
import 'package:news_app/constant/color_res.dart';
import 'package:news_app/model/user_model.dart';
import 'package:news_app/util/log.util.dart';
import 'package:news_app/util/toast_util.dart';
import 'package:news_app/widget/my_txt.dart';
import 'package:path_provider/path_provider.dart';

import '../../main.dart';
import '../../util/permission_util.dart';
import '../../widget/load_image.dart';

/// @author: bo.zeng
/// @email: cnhbwds@gmail.com
/// @date: 2025 2025/4/9 16:00
/// @description:
class EditProfilePage extends ConsumerStatefulWidget {
  const EditProfilePage({super.key});

  @override
  ConsumerState<EditProfilePage> createState() => _EditProfilePageState();
}

class _EditProfilePageState extends ConsumerState<EditProfilePage> {
  final TextEditingController _nicknameController = TextEditingController();
  final TextEditingController _descriptionController = TextEditingController();

  @override
  void dispose() {
    _nicknameController.dispose();
    _descriptionController.dispose();
    super.dispose();
  }

  // 从相册选择图片
  Future<void> _pickImageFromGallery() async {
    final XFile? pickedFile = await ImagePicker().pickImage(
      source: ImageSource.gallery,
      imageQuality: 80, // 原生压缩（可选）
    );
    consoleLog(pickedFile);
    if (pickedFile != null) {
      _uploadToServer(pickedFile);
    }
  }

  // 从相机拍照
  Future<void> _pickImageFromCamera() async {
    final XFile? pickedFile = await ImagePicker().pickImage(
      source: ImageSource.camera,
      imageQuality: 80, // 原生压缩（可选）
    );
    consoleLog(pickedFile);
    if (pickedFile != null) {
      _uploadToServer(pickedFile);
    }
  }

  Future<void> saveToFile(String text) async {
    final dir = await getTemporaryDirectory();
    final file = File('${dir.path}/base64_output.txt');
    await file.writeAsString(text);
    consoleLog('已保存到: ${file.path}');
  }

  // 示例上传方法
  void _uploadToServer(XFile? pickedFile) async {
    if (pickedFile != null) {
      final String? base64Image = await pickCompressAndConvertToBase64(
        pickedFile,
      );
      // saveToFile(base64Image ?? "");
      if (base64Image != null) {
        bool result = await ref
            .read(globalUserProvider.notifier)
            .fetchUserAvatarInfo(base64Image: base64Image);
        if (!mounted) return;
        if (result) {
          context.pop();
        }
      }
    } else {
      consoleLog("获取相册错误");
    }
  }

  // 2. 压缩图片
  Future<File?> compressImage(
    XFile file, {
    int maxWidth = 200,
    int quality = 80,
  }) async {
    try {
      // 读取原始图片数据
      final originalBytes = await file.readAsBytes();

      // 解码图片
      final originalImage = img.decodeImage(originalBytes);
      if (originalImage == null) return null;

      // 计算缩放比例
      int width = originalImage.width;
      int height = originalImage.height;
      if (width > maxWidth) {
        height = (height * maxWidth / width).toInt();
        width = maxWidth;
      }

      // 缩放图片
      final resizedImage = img.copyResize(
        originalImage,
        width: width,
        height: height,
      );

      // 获取临时目录
      final tempDir = await getTemporaryDirectory();
      final compressedFile = File(
        '${tempDir.path}/compressed_${DateTime.now().millisecondsSinceEpoch}.jpg',
      );

      // 保存压缩后的图片
      await compressedFile.writeAsBytes(
        img.encodeJpg(resizedImage, quality: quality),
      );

      return compressedFile;
    } catch (e) {
      debugPrint('图片压缩错误: $e');
      return null;
    }
  }

  Future<String?> convertImageToBase64WithPrefix(File imageFile) async {
    try {
      // 1. 读取图片文件
      final bytes = await imageFile.readAsBytes();

      // 2. 获取图片格式（根据文件扩展名判断）
      final format = _getImageFormat(imageFile.path);
      if (format == null) return null;

      // 3. 编码为Base64
      final base64Str = base64Encode(bytes);

      // 4. 添加数据URI前缀
      return base64Str;
      // return 'data:image/$format;base64,$base64Str';
    } catch (e) {
      consoleLog('转换失败: $e');
      return null;
    }
  }

  /// 获取图片格式
  String? _getImageFormat(String filePath) {
    final extension = filePath.split('.').last.toLowerCase();
    switch (extension) {
      case 'png':
        return 'png';
      case 'jpg':
      case 'jpeg':
        return 'jpeg';
      case 'gif':
        return 'gif';
      case 'webp':
        return 'webp';
      default:
        return null;
    }
  }

  // 完整流程：选择图片 -> 压缩 -> 转Base64
  Future<String?> pickCompressAndConvertToBase64(XFile pickedFile) async {
    try {
      // 2. 压缩图片
      final File? compressedFile = await compressImage(pickedFile);
      if (compressedFile == null) return null;

      // 3. 转换为Base64
      final String? base64String = await convertImageToBase64WithPrefix(
        compressedFile,
      );

      // 删除临时文件
      await compressedFile.delete();

      return base64String;
    } catch (e) {
      debugPrint('完整流程错误: $e');
      return null;
    }
  }

  void saveAction(BuildContext context, WidgetRef ref) async {
    if (_nicknameController.text.isEmpty) {
      showToast("昵称不能为空");
      return;
    }
    if (_descriptionController.text.isEmpty) {
      showToast("描述不能为空");
      return;
    }
    bool result = await ref
        .read(globalUserProvider.notifier)
        .fetchUpdateUserInfo(
          nickname: _nicknameController.text,
          description: _descriptionController.text,
        );

    if (result && context.mounted) {
      context.pop();
    }
  }

  void _changeAvatar(BuildContext context) {
    showDialog(
      useRootNavigator: true,
      barrierDismissible: true, // 点击背景可关闭
      context: context,
      builder: (context) {
        return SimpleDialog(
          title: myTxt(text: "请选择头像来源"),
          children: [
            SimpleDialogOption(
              onPressed: () {
                Navigator.pop(context);
                _pickImageFromCamera();
              },
              child: Padding(
                padding: const EdgeInsets.symmetric(vertical: 6),
                child: const Text('拍照'),
              ),
            ),
            SimpleDialogOption(
              onPressed: () {
                Navigator.pop(context);
                _pickImageFromGallery();
              },
              child: Padding(
                padding: const EdgeInsets.symmetric(vertical: 6),
                child: const Text('从相册选择'),
              ),
            ),
          ],
        );
      },
    );
  }

  @override
  Widget build(BuildContext context) {
    UserModel user = ref.watch(globalUserProvider);
    _nicknameController.text = user.nickName ?? "";
    _descriptionController.text = user.description ?? "";
    return Scaffold(
      resizeToAvoidBottomInset: false,
      backgroundColor: Colors.white,
      appBar: AppBar(
        title: myTxt(
          text: '个人资料',
          fontSize: 18.sp,
          fontWeight: FontWeight.bold,
        ),
        actions: [
          TextButton(
            child: Text(
              '保存',
              style: TextStyle(color: Colors.black, fontSize: 16),
            ),
            onPressed: () {
              saveAction(context, ref);
            },
          ),
        ],
        centerTitle: true,
      ),
      body: Container(
        padding: EdgeInsets.all(20.w),
        child: Column(
          crossAxisAlignment: CrossAxisAlignment.center,
          children: [
            // Avatar section
            GestureDetector(
              onTap: () async {
                if (Platform.isIOS) {
                  _changeAvatar(context);
                } else {
                  // Handle avatar change
                  bool granted =
                      await PermissionManager.requestCameraPermission();
                  if (granted) {
                    // 执行拍照逻辑
                    if (context.mounted) _changeAvatar(context);
                  } else {
                    // 提示用户权限被拒绝
                    showToast("需要开启存储权限");
                  }
                }
              },
              child: Column(
                children: [
                  Container(
                    width: 80.w,
                    height: 80.w,
                    decoration: BoxDecoration(
                      border: Border.all(color: Colors.white, width: 2.w),
                      borderRadius: BorderRadius.circular(33.r),
                    ),
                    child: ClipOval(
                      child: LoadImage(
                        user.avatar ?? '',
                        width: 80.w,
                        height: 80.w,
                        holderImg: "user_avatar",
                      ),
                    ),
                  ),
                  const SizedBox(height: 8),
                  Text(
                    '点击更换头像',
                    style: Theme.of(
                      context,
                    ).textTheme.bodySmall?.copyWith(color: color666666),
                  ),
                ],
              ),
            ),

            SizedBox(height: 24.h),

            // Nickname section
            ProfileSection(
              title: '昵称',
              content: user.nickName ?? "",
              maxLines: 1,
              controller: _nicknameController,
            ),

            SizedBox(height: 24.h),

            // Bio section
            ProfileSection(
              title: '个人简介',
              content: user.description ?? "",
              maxLines: 5,
              controller: _descriptionController,
            ),
          ],
        ),
      ),
    );
  }
}

class ProfileSection extends StatelessWidget {
  final String title;
  final String content;
  final int maxLines;
  final TextEditingController controller;

  const ProfileSection({
    super.key,
    required this.title,
    required this.content,
    required this.maxLines,
    required this.controller,
  });

  @override
  Widget build(BuildContext context) {
    return Column(
      crossAxisAlignment: CrossAxisAlignment.start,
      children: [
        Text(
          title,
          style: Theme.of(
            context,
          ).textTheme.titleMedium?.copyWith(fontWeight: FontWeight.bold),
        ),
        const SizedBox(height: 8),
        TextField(
          maxLines: maxLines,
          controller: controller,
          decoration: InputDecoration(
            border: InputBorder.none,
            filled: true,
            fillColor: Colors.grey[200],
            hintText: content,
            hintStyle: Theme.of(
              context,
            ).textTheme.bodyMedium?.copyWith(color: Colors.grey),
          ),
        ),
      ],
    );
  }
}