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

import '../api/oa_client.dart';
import '../labels.dart';
import '../session/session.dart';
import '../theme.dart';
import '../widgets/wecom.dart';

class ProfilePage extends StatefulWidget {
  const ProfilePage({super.key, required this.session, required this.api});
  final SessionStore session;
  final OaClient api;

  @override
  State<ProfilePage> createState() => _ProfilePageState();
}

class _ProfilePageState extends State<ProfilePage> {
  bool _busy = false;

  Future<void> _refreshMe() async {
    final me = await widget.api.get('/auth/me');
    if (me is Map) await widget.session.patchUser(Map<String, dynamic>.from(me));
  }

  Future<void> _pickAvatar() async {
    final x = await ImagePicker().pickImage(source: ImageSource.gallery, imageQuality: 85, maxWidth: 800);
    if (x == null) return;
    setState(() => _busy = true);
    try {
      await widget.api.uploadFile(
        filePath: x.path,
        filename: x.name.isEmpty ? 'avatar.jpg' : x.name,
        bizType: 'USER_AVATAR',
        bizId: widget.session.userId,
      );
      await _refreshMe();
      if (mounted) ScaffoldMessenger.of(context).showSnackBar(const SnackBar(content: Text('头像已更新')));
    } catch (e) {
      if (mounted) ScaffoldMessenger.of(context).showSnackBar(SnackBar(content: Text('$e')));
    } finally {
      if (mounted) setState(() => _busy = false);
    }
  }

  Future<void> _editName() async {
    final c = TextEditingController(text: widget.session.displayName);
    final ok = await showDialog<bool>(
      context: context,
      builder: (ctx) => AlertDialog(
        title: const Text('修改姓名'),
        content: TextField(controller: c, decoration: const InputDecoration(hintText: '显示名')),
        actions: [
          TextButton(onPressed: () => Navigator.pop(ctx, false), child: const Text('取消')),
          FilledButton(onPressed: () => Navigator.pop(ctx, true), child: const Text('保存')),
        ],
      ),
    );
    if (ok != true || c.text.trim().isEmpty) return;
    try {
      final me = await widget.api.patch('/auth/profile', {'displayName': c.text.trim()});
      if (me is Map) await widget.session.patchUser(Map<String, dynamic>.from(me));
      if (mounted) ScaffoldMessenger.of(context).showSnackBar(const SnackBar(content: Text('已保存')));
    } catch (e) {
      if (mounted) ScaffoldMessenger.of(context).showSnackBar(SnackBar(content: Text('$e')));
    }
  }

  Future<void> _editPassword() async {
    final oldC = TextEditingController();
    final newC = TextEditingController();
    final ok = await showDialog<bool>(
      context: context,
      builder: (ctx) => AlertDialog(
        title: const Text('修改密码'),
        content: Column(
          mainAxisSize: MainAxisSize.min,
          children: [
            TextField(controller: oldC, obscureText: true, decoration: const InputDecoration(hintText: '当前密码')),
            const SizedBox(height: 8),
            TextField(controller: newC, obscureText: true, decoration: const InputDecoration(hintText: '新密码（至少 6 位）')),
          ],
        ),
        actions: [
          TextButton(onPressed: () => Navigator.pop(ctx, false), child: const Text('取消')),
          FilledButton(onPressed: () => Navigator.pop(ctx, true), child: const Text('保存')),
        ],
      ),
    );
    if (ok != true) return;
    try {
      await widget.api.patch('/auth/password', {'oldPassword': oldC.text, 'newPassword': newC.text});
      if (mounted) ScaffoldMessenger.of(context).showSnackBar(const SnackBar(content: Text('密码已更新')));
    } catch (e) {
      if (mounted) ScaffoldMessenger.of(context).showSnackBar(SnackBar(content: Text('$e')));
    }
  }

  @override
  Widget build(BuildContext context) {
    final s = widget.session;
    final avatarId = '${s.user['avatarFileId'] ?? ''}';
    return Scaffold(
      backgroundColor: kPaper,
      appBar: AppBar(title: const Text('个人资料')),
      body: ListView(
        children: [
          const SizedBox(height: 12),
          CellGroup(
            children: [
              Cell(
                title: '头像',
                trailing: SquareAvatar(
                  label: s.displayName,
                  size: 48,
                  fileId: avatarId.isEmpty ? null : avatarId,
                  api: widget.api,
                ),
                onTap: _busy ? null : _pickAvatar,
              ),
              Cell(title: '姓名', subtitle: s.displayName, onTap: _editName),
              Cell(title: '账号', subtitle: '${s.user['username'] ?? ''}'),
              Cell(
                title: '角色',
                subtitle: s.roles.map(zh).join(' · '),
                showLine: false,
              ),
            ],
          ),
          CellGroup(
            children: [
              Cell(title: '修改密码', onTap: _editPassword, showLine: false),
            ],
          ),
        ],
      ),
    );
  }
}