slogan/lib/features/profile/photo_guide_page.dart

import 'package:flutter/material.dart';
import 'package:flutter_riverpod/flutter_riverpod.dart';
import 'package:fluttertoast/fluttertoast.dart';
import 'package:go_router/go_router.dart';
import 'package:image_picker/image_picker.dart';

import '../../shared/widgets/loading_view.dart';
import 'photo_upload_provider.dart';

/// 拍照引导：4 类照片（大头照/正面/侧面/背面）逐一上传
class PhotoGuidePage extends ConsumerStatefulWidget {
  const PhotoGuidePage({super.key});

  @override
  ConsumerState<PhotoGuidePage> createState() => _PhotoGuidePageState();
}

class _PhotoGuidePageState extends ConsumerState<PhotoGuidePage> {
  final _picker = ImagePicker();
  int? _uploadingType;

  Future<void> _pickAndUpload(int type) async {
    final source = await showModalBottomSheet<ImageSource>(
      context: context,
      builder: (ctx) => SafeArea(
        child: Column(
          mainAxisSize: MainAxisSize.min,
          children: [
            ListTile(
              leading: const Icon(Icons.photo_camera_outlined),
              title: const Text('拍照'),
              onTap: () => Navigator.pop(ctx, ImageSource.camera),
            ),
            ListTile(
              leading: const Icon(Icons.photo_library_outlined),
              title: const Text('从相册选择'),
              onTap: () => Navigator.pop(ctx, ImageSource.gallery),
            ),
          ],
        ),
      ),
    );
    if (source == null || !mounted) return;

    final file = await _picker.pickImage(
        source: source, maxWidth: 2048, imageQuality: 85);
    if (file == null) return;

    setState(() => _uploadingType = type);
    try {
      await ref.read(photoProvider.notifier).upload(type, file.path);
      if (!mounted) return;
      Fluttertoast.showToast(msg: '${PhotoType.labels[type]}上传成功');
    } catch (e) {
      if (!mounted) return;
      Fluttertoast.showToast(
          msg: '上传失败：${e.toString().replaceFirst('Exception: ', '')}');
    } finally {
      if (mounted) setState(() => _uploadingType = null);
    }
  }

  @override
  Widget build(BuildContext context) {
    final photos = ref.watch(photoProvider);
    return Scaffold(
      appBar: AppBar(title: const Text('拍摄形象照片')),
      body: photos.when(
        loading: () => const LoadingView(text: '加载照片状态...'),
        error: (e, _) => Center(child: Text('加载失败：$e')),
        data: (list) {
          final allDone = PhotoType.all.every(
              (t) => list.any((p) => p.type == t));
          return ListView(
            padding: const EdgeInsets.all(16),
            children: [
              const Text('按提示拍摄 4 张照片，用于构建你的 3D 形象',
                  style: TextStyle(color: Colors.grey, fontSize: 13)),
              const SizedBox(height: 12),
              for (final type in PhotoType.all) ...[
                _PhotoCard(
                  type: type,
                  uploaded: list.any((p) => p.type == type),
                  uploading: _uploadingType == type,
                  onTap: _uploadingType == null
                      ? () => _pickAndUpload(type)
                      : null,
                ),
                const SizedBox(height: 12),
              ],
              const SizedBox(height: 8),
              FilledButton.icon(
                onPressed: allDone && _uploadingType == null
                    ? () => context.go('/body-tune')
                    : null,
                icon: const Icon(Icons.arrow_forward),
                label: Text(allDone ? '照片已完成，设置身形' : '还需拍摄剩余照片'),
              ),
            ],
          );
        },
      ),
    );
  }
}

class _PhotoCard extends StatelessWidget {
  final int type;
  final bool uploaded;
  final bool uploading;
  final VoidCallback? onTap;

  const _PhotoCard({
    required this.type,
    required this.uploaded,
    required this.uploading,
    required this.onTap,
  });

  @override
  Widget build(BuildContext context) {
    final scheme = Theme.of(context).colorScheme;
    return Card(
      clipBehavior: Clip.antiAlias,
      child: ListTile(
        onTap: onTap,
        leading: CircleAvatar(
          backgroundColor:
              uploaded ? Colors.green.shade100 : scheme.primaryContainer,
          child: uploading
              ? const SizedBox(
                  width: 20,
                  height: 20,
                  child: CircularProgressIndicator(strokeWidth: 2))
              : Icon(uploaded
                  ? Icons.check
                  : Icons.add_a_photo_outlined),
        ),
        title: Text(PhotoType.labels[type]!),
        subtitle: Text(PhotoType.descs[type]!),
        trailing: uploaded
            ? const Chip(
                label: Text('已上传'),
                backgroundColor: Colors.green,
                labelStyle: TextStyle(color: Colors.white, fontSize: 12),
              )
            : null,
      ),
    );
  }
}