404 lines
13 KiB
Dart
404 lines
13 KiB
Dart
import 'dart:io';
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import 'package:cached_network_image/cached_network_image.dart';
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import 'package:firebase_auth/firebase_auth.dart';
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import 'package:flutter/material.dart';
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import 'package:image_picker/image_picker.dart';
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import '../models/post_item.dart';
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import '../services/firestore_service.dart';
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import '../services/storage_service.dart';
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class AddPostScreen extends StatefulWidget {
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final String collectionName;
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final String screenTitle;
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final PostItem? postToEdit;
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const AddPostScreen({
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super.key,
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required this.collectionName,
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required this.screenTitle,
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this.postToEdit,
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});
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@override
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State<AddPostScreen> createState() => _AddPostScreenState();
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}
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class _AddPostScreenState extends State<AddPostScreen> {
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final _formKey = GlobalKey<FormState>();
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final _titleController = TextEditingController();
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final _descriptionController = TextEditingController();
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final FirestoreService _firestoreService = FirestoreService();
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final StorageService _storageService = StorageService();
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File? _selectedImage;
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String? _existingImageUrl;
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bool _isSaving = false;
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bool get isEditing => widget.postToEdit != null;
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@override
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void initState() {
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super.initState();
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if (widget.postToEdit != null) {
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_titleController.text = widget.postToEdit!.title;
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_descriptionController.text = widget.postToEdit!.description;
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if (widget.postToEdit!.imageUrls.isNotEmpty) {
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_existingImageUrl = widget.postToEdit!.imageUrls.first;
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} else if (widget.postToEdit!.imageUrl.isNotEmpty) {
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_existingImageUrl = widget.postToEdit!.imageUrl;
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}
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}
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}
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@override
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void dispose() {
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_titleController.dispose();
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_descriptionController.dispose();
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super.dispose();
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}
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Future<void> _pickImage(ImageSource source) async {
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try {
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final picked = await ImagePicker().pickImage(
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source: source,
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maxWidth: 1600,
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maxHeight: 1200,
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imageQuality: 85,
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);
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if (picked != null) {
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setState(() {
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_selectedImage = File(picked.path);
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});
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}
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} catch (e) {
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if (!mounted) return;
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ScaffoldMessenger.of(context).showSnackBar(
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SnackBar(content: Text('Fehler bei der Bildauswahl: $e')),
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);
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}
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}
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void _showImageSourceModal() {
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showModalBottomSheet(
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context: context,
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useSafeArea: true,
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shape: const RoundedRectangleBorder(
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borderRadius: BorderRadius.vertical(top: Radius.circular(16)),
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),
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builder: (ctx) => SafeArea(
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child: Wrap(
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children: [
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ListTile(
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leading: const Icon(Icons.photo_library),
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title: const Text('Aus Galerie wählen'),
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onTap: () {
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Navigator.pop(ctx);
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_pickImage(ImageSource.gallery);
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},
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),
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ListTile(
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leading: const Icon(Icons.camera_alt),
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title: const Text('Kamera verwenden'),
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onTap: () {
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Navigator.pop(ctx);
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_pickImage(ImageSource.camera);
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},
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),
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],
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),
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),
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);
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}
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Future<void> _submitPost() async {
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if (!_formKey.currentState!.validate() || _isSaving) return;
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setState(() {
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_isSaving = true;
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});
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try {
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if (isEditing) {
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String imageUrl = _existingImageUrl ?? '';
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if (_selectedImage != null) {
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// If a new image was chosen, remove the old one from storage if it existed
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if (widget.postToEdit!.imageUrls.isNotEmpty) {
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for (final oldUrl in widget.postToEdit!.imageUrls) {
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try {
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await _storageService.deleteFileByUrl(oldUrl);
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} catch (_) {}
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}
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}
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imageUrl = await _storageService.uploadFile(
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file: _selectedImage!,
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collectionName: widget.collectionName,
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optimize: true,
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);
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} else if (_existingImageUrl == null &&
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widget.postToEdit!.imageUrls.isNotEmpty) {
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// Existing image was deleted by the user
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for (final oldUrl in widget.postToEdit!.imageUrls) {
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try {
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await _storageService.deleteFileByUrl(oldUrl);
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} catch (_) {}
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}
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}
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final updatedPost = widget.postToEdit!.copyWith(
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title: _titleController.text.trim(),
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description: _descriptionController.text.trim(),
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imageUrl: imageUrl,
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imageUrls: imageUrl.isNotEmpty ? [imageUrl] : [],
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);
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await _firestoreService.updatePost(widget.collectionName, updatedPost);
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if (!mounted) return;
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ScaffoldMessenger.of(context).showSnackBar(
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const SnackBar(
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content: Text('Eintrag erfolgreich aktualisiert!'),
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backgroundColor: Colors.green,
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),
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);
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Navigator.pop(context, updatedPost);
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} else {
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final currentUserId = FirebaseAuth.instance.currentUser?.uid;
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String imageUrl = '';
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if (_selectedImage != null) {
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imageUrl = await _storageService.uploadFile(
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file: _selectedImage!,
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collectionName: widget.collectionName,
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optimize: true,
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);
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}
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final newPost = PostItem(
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id: '',
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title: _titleController.text.trim(),
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description: _descriptionController.text.trim(),
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imageUrl: imageUrl,
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imageUrls: imageUrl.isNotEmpty ? [imageUrl] : [],
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createdDate: DateTime.now(),
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authorUid: currentUserId,
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);
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await _firestoreService.addPost(widget.collectionName, newPost);
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if (!mounted) return;
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ScaffoldMessenger.of(context).showSnackBar(
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const SnackBar(
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content: Text('Eintrag erfolgreich veröffentlicht!'),
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backgroundColor: Colors.green,
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),
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);
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Navigator.pop(context, newPost);
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}
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} catch (e) {
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if (!mounted) return;
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ScaffoldMessenger.of(context).showSnackBar(
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SnackBar(
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content: Text('Fehler beim Speichern: $e'),
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backgroundColor: Colors.red,
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),
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);
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} finally {
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if (mounted) {
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setState(() {
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_isSaving = false;
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});
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}
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}
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}
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@override
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Widget build(BuildContext context) {
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return Scaffold(
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appBar: AppBar(
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title: Text(isEditing ? 'Beitrag bearbeiten' : widget.screenTitle),
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),
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body: SingleChildScrollView(
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padding: EdgeInsets.only(
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left: 16.0,
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right: 16.0,
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top: 16.0,
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bottom: MediaQuery.paddingOf(context).bottom + 24.0,
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),
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child: Form(
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key: _formKey,
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child: Column(
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crossAxisAlignment: CrossAxisAlignment.start,
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children: [
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TextFormField(
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controller: _titleController,
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decoration: const InputDecoration(
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labelText: 'Überschrift *',
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border: OutlineInputBorder(),
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),
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validator: (val) => (val == null || val.trim().isEmpty)
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? 'Bitte Überschrift eingeben'
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: null,
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),
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const SizedBox(height: 16),
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TextFormField(
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controller: _descriptionController,
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maxLines: 5,
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decoration: const InputDecoration(
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labelText: 'Inhalt / Text *',
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alignLabelWithHint: true,
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border: OutlineInputBorder(),
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),
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validator: (val) => (val == null || val.trim().isEmpty)
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? 'Bitte Text eingeben'
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: null,
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),
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const SizedBox(height: 20),
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const Text(
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'Anhang / Beitragsbild',
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style: TextStyle(fontWeight: FontWeight.bold, fontSize: 14),
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),
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const SizedBox(height: 8),
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if (_selectedImage != null)
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Stack(
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children: [
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Container(
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height: 180,
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width: double.infinity,
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decoration: BoxDecoration(
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borderRadius: BorderRadius.circular(10),
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border: Border.all(color: Colors.grey.shade400),
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image: DecorationImage(
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image: FileImage(_selectedImage!),
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fit: BoxFit.cover,
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),
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),
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),
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Positioned(
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top: 8,
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right: 8,
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child: CircleAvatar(
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backgroundColor: Colors.black54,
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child: IconButton(
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icon: const Icon(Icons.close, color: Colors.white),
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onPressed: () =>
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setState(() => _selectedImage = null),
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),
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),
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),
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],
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)
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else if (_existingImageUrl != null &&
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_existingImageUrl!.isNotEmpty)
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Stack(
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children: [
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Container(
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height: 180,
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width: double.infinity,
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decoration: BoxDecoration(
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borderRadius: BorderRadius.circular(10),
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border: Border.all(color: Colors.grey.shade400),
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),
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clipBehavior: Clip.antiAlias,
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child: CachedNetworkImage(
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imageUrl: _existingImageUrl!,
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fit: BoxFit.cover,
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placeholder: (ctx, url) => const Center(
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child: CircularProgressIndicator(),
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),
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errorWidget: (ctx, url, err) => Container(
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color: Colors.grey.shade200,
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child: const Icon(Icons.broken_image, size: 40),
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),
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),
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),
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Positioned(
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top: 8,
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right: 8,
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child: CircleAvatar(
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backgroundColor: Colors.black54,
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child: IconButton(
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icon: const Icon(Icons.close, color: Colors.white),
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tooltip: 'Bild entfernen',
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onPressed: () =>
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setState(() => _existingImageUrl = null),
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),
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),
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),
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Positioned(
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bottom: 8,
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right: 8,
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child: ElevatedButton.icon(
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style: ElevatedButton.styleFrom(
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backgroundColor: Colors.black54,
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foregroundColor: Colors.white,
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padding: const EdgeInsets.symmetric(
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horizontal: 10, vertical: 6),
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),
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onPressed: _showImageSourceModal,
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icon: const Icon(Icons.camera_alt, size: 16),
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label: const Text('Ersetzen',
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style: TextStyle(fontSize: 12)),
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),
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),
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],
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)
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else
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InkWell(
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onTap: _showImageSourceModal,
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child: Container(
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height: 120,
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width: double.infinity,
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decoration: BoxDecoration(
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color: Colors.grey.shade200,
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borderRadius: BorderRadius.circular(10),
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border: Border.all(color: Colors.grey.shade400),
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),
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child: const Column(
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mainAxisAlignment: MainAxisAlignment.center,
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children: [
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Icon(Icons.add_photo_alternate,
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size: 36, color: Colors.grey),
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SizedBox(height: 6),
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Text('Foto hinzufügen',
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style: TextStyle(color: Colors.black54)),
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],
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),
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),
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),
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const SizedBox(height: 32),
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SizedBox(
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width: double.infinity,
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height: 50,
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child: ElevatedButton.icon(
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onPressed: _isSaving ? null : _submitPost,
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icon: _isSaving
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? const SizedBox(
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width: 20,
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height: 20,
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child: CircularProgressIndicator(
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strokeWidth: 2, color: Colors.white),
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)
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: Icon(isEditing ? Icons.save : Icons.send),
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label: Text(
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_isSaving
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? 'Wird gespeichert...'
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: (isEditing
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? 'Änderungen speichern'
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: 'Veröffentlichen'),
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style: const TextStyle(fontSize: 16),
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),
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),
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),
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],
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),
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),
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),
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);
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}
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}
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