712 lines
20 KiB
Dart
712 lines
20 KiB
Dart
import 'dart:io';
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import 'dart:convert';
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import 'dart:ui' as ui;
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import 'package:flutter/material.dart';
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import 'package:flutter_riverpod/flutter_riverpod.dart';
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import 'package:file_picker/file_picker.dart';
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import 'package:image_picker/image_picker.dart';
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import 'package:path/path.dart' as path;
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import '../../../core/services/api_service.dart';
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import '../../../core/providers/app_providers.dart';
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import '../../../core/utils/debug_logger.dart';
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String _deriveDisplayName({
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required String? preferredName,
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required String filePath,
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String fallbackPrefix = 'attachment',
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}) {
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final String candidate =
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(preferredName != null && preferredName.trim().isNotEmpty)
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? preferredName.trim()
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: path.basename(filePath);
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final String pathExt = path.extension(filePath);
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final String candidateExt = path.extension(candidate);
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final String extension = (candidateExt.isNotEmpty ? candidateExt : pathExt)
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.toLowerCase();
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if (candidate.toLowerCase().startsWith('image_picker')) {
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return _timestampedName(prefix: fallbackPrefix, extension: extension);
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}
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if (candidate.isEmpty) {
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return _timestampedName(prefix: fallbackPrefix, extension: extension);
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}
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return candidate;
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}
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String _timestampedName({required String prefix, required String extension}) {
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final DateTime now = DateTime.now();
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String two(int value) => value.toString().padLeft(2, '0');
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final String ext = extension.isNotEmpty ? extension : '.jpg';
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final String timestamp =
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'${now.year}${two(now.month)}${two(now.day)}_${two(now.hour)}${two(now.minute)}${two(now.second)}';
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return '${prefix}_$timestamp$ext';
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}
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/// Represents a locally selected attachment with a user-facing display name.
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class LocalAttachment {
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LocalAttachment({required this.file, required this.displayName});
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final File file;
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final String displayName;
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int get sizeInBytes => file.lengthSync();
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String get extension {
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final fromName = path.extension(displayName);
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if (fromName.isNotEmpty) {
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return fromName.toLowerCase();
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}
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return path.extension(file.path).toLowerCase();
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}
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bool get isImage => <String>{
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'.jpg',
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'.jpeg',
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'.png',
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'.gif',
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'.webp',
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'.bmp',
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}.contains(extension);
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}
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class FileAttachmentService {
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final ApiService _apiService;
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final ImagePicker _imagePicker = ImagePicker();
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FileAttachmentService(this._apiService);
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// Pick files from device
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Future<List<LocalAttachment>> pickFiles({
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bool allowMultiple = true,
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List<String>? allowedExtensions,
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}) async {
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try {
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final result = await FilePicker.platform.pickFiles(
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allowMultiple: allowMultiple,
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type: allowedExtensions != null ? FileType.custom : FileType.any,
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allowedExtensions: allowedExtensions,
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);
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if (result == null || result.files.isEmpty) {
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return [];
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}
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return result.files.where((file) => file.path != null).map((file) {
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final displayName = _deriveDisplayName(
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preferredName: file.name,
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filePath: file.path!,
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fallbackPrefix: 'attachment',
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);
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return LocalAttachment(
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file: File(file.path!),
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displayName: displayName,
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);
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}).toList();
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} catch (e) {
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throw Exception('Failed to pick files: $e');
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}
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}
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// Pick image from gallery
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Future<LocalAttachment?> pickImage() async {
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try {
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final result = await FilePicker.platform.pickFiles(
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allowMultiple: false,
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type: FileType.image,
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);
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if (result != null && result.files.isNotEmpty) {
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final platformFile = result.files.first;
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if (platformFile.path != null) {
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final displayName = _deriveDisplayName(
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preferredName: platformFile.name,
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filePath: platformFile.path!,
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fallbackPrefix: 'photo',
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);
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return LocalAttachment(
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file: File(platformFile.path!),
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displayName: displayName,
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);
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}
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}
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} catch (e) {
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DebugLogger.log(
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'FilePicker image failed: $e',
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scope: 'attachments/image',
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);
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}
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try {
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final XFile? image = await _imagePicker.pickImage(
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source: ImageSource.gallery,
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imageQuality: 85,
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);
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if (image == null) return null;
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final file = File(image.path);
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final displayName = _deriveDisplayName(
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preferredName: image.name,
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filePath: image.path,
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fallbackPrefix: 'photo',
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);
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return LocalAttachment(file: file, displayName: displayName);
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} catch (e) {
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throw Exception('Failed to pick image: $e');
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}
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}
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// Take photo from camera
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Future<LocalAttachment?> takePhoto() async {
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try {
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final XFile? photo = await _imagePicker.pickImage(
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source: ImageSource.camera,
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imageQuality: 85,
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);
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if (photo == null) return null;
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final file = File(photo.path);
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final displayName = _deriveDisplayName(
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preferredName: photo.name,
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filePath: photo.path,
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fallbackPrefix: 'photo',
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);
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return LocalAttachment(file: file, displayName: displayName);
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} catch (e) {
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throw Exception('Failed to take photo: $e');
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}
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}
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// Compress image similar to OpenWebUI's implementation
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Future<String> compressImage(
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String imageDataUrl,
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int? maxWidth,
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int? maxHeight,
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) async {
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try {
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// Decode base64 data - with validation
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final parts = imageDataUrl.split(',');
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if (parts.length < 2) {
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DebugLogger.log(
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'Invalid data URL format - missing comma separator',
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scope: 'attachments/image',
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data: {
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'urlPrefix': imageDataUrl.length > 50
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? imageDataUrl.substring(0, 50)
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: imageDataUrl,
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},
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);
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return imageDataUrl; // Return original if format is invalid
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}
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final data = parts[1];
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final bytes = base64Decode(data);
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// Decode image
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final codec = await ui.instantiateImageCodec(bytes);
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final frame = await codec.getNextFrame();
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final image = frame.image;
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int width = image.width;
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int height = image.height;
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// Calculate new dimensions maintaining aspect ratio
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if (maxWidth != null && maxHeight != null) {
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if (width <= maxWidth && height <= maxHeight) {
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return imageDataUrl; // No compression needed
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}
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if (width / height > maxWidth / maxHeight) {
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height = ((maxWidth * height) / width).round();
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width = maxWidth;
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} else {
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width = ((maxHeight * width) / height).round();
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height = maxHeight;
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}
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} else if (maxWidth != null) {
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if (width <= maxWidth) {
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return imageDataUrl; // No compression needed
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}
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height = ((maxWidth * height) / width).round();
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width = maxWidth;
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} else if (maxHeight != null) {
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if (height <= maxHeight) {
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return imageDataUrl; // No compression needed
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}
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width = ((maxHeight * width) / height).round();
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height = maxHeight;
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}
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// Create compressed image
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final recorder = ui.PictureRecorder();
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final canvas = Canvas(recorder);
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canvas.drawImageRect(
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image,
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Rect.fromLTWH(0, 0, image.width.toDouble(), image.height.toDouble()),
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Rect.fromLTWH(0, 0, width.toDouble(), height.toDouble()),
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Paint(),
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);
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final picture = recorder.endRecording();
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final compressedImage = await picture.toImage(width, height);
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final byteData = await compressedImage.toByteData(
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format: ui.ImageByteFormat.png,
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);
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final compressedBytes = byteData!.buffer.asUint8List();
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// Convert back to data URL
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final compressedBase64 = base64Encode(compressedBytes);
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return 'data:image/png;base64,$compressedBase64';
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} catch (e) {
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DebugLogger.error(
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'compress-failed',
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scope: 'attachments/image',
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error: e,
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);
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return imageDataUrl; // Return original if compression fails
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}
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}
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// Convert image file to base64 data URL with compression
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Future<String?> convertImageToDataUrl(
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File imageFile, {
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bool enableCompression = false,
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int? maxWidth,
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int? maxHeight,
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}) async {
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try {
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DebugLogger.log(
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'convert-start',
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scope: 'attachments/image',
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data: {'path': imageFile.path},
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);
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// Read the file as bytes
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final bytes = await imageFile.readAsBytes();
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// Determine MIME type based on file extension
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final ext = path.extension(imageFile.path).toLowerCase();
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String mimeType = 'image/png'; // default
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if (ext == '.jpg' || ext == '.jpeg') {
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mimeType = 'image/jpeg';
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} else if (ext == '.gif') {
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mimeType = 'image/gif';
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} else if (ext == '.webp') {
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mimeType = 'image/webp';
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}
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// Convert to base64
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final base64String = base64Encode(bytes);
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String dataUrl = 'data:$mimeType;base64,$base64String';
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// Apply compression if enabled
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if (enableCompression && (maxWidth != null || maxHeight != null)) {
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dataUrl = await compressImage(dataUrl, maxWidth, maxHeight);
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}
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DebugLogger.log(
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'convert-done',
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scope: 'attachments/image',
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data: {'mime': mimeType},
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);
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return dataUrl;
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} catch (e) {
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DebugLogger.error('convert-failed', scope: 'attachments/image', error: e);
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return null;
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}
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}
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// Upload file with progress tracking
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Stream<FileUploadState> uploadFile(LocalAttachment attachment) async* {
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DebugLogger.log(
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'upload-start',
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scope: 'attachments/file',
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data: {
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'path': attachment.file.path,
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'displayName': attachment.displayName,
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},
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);
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try {
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final file = attachment.file;
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final fileName = attachment.displayName;
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final fileSize = await file.length();
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final ext = path.extension(fileName).toLowerCase();
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final isImage = ['.jpg', '.jpeg', '.png', '.gif', '.webp'].contains(ext);
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DebugLogger.log(
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'file-details',
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scope: 'attachments/file',
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data: {'name': fileName, 'bytes': fileSize},
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);
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yield FileUploadState(
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file: file,
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fileName: fileName,
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fileSize: fileSize,
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progress: 0.0,
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status: FileUploadStatus.uploading,
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isImage: isImage,
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);
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// Upload ALL files (including images) to server for consistency with web client
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DebugLogger.log('upload-progress', scope: 'attachments/file');
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final fileId = await _apiService.uploadFile(file.path, fileName);
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DebugLogger.log(
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'upload-complete',
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scope: 'attachments/file',
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data: {'fileId': fileId},
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);
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yield FileUploadState(
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file: file,
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fileName: fileName,
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fileSize: fileSize,
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progress: 1.0,
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status: FileUploadStatus.completed,
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fileId: fileId,
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isImage: isImage,
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);
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} catch (e) {
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DebugLogger.error('upload-failed', scope: 'attachments/file', error: e);
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final file = attachment.file;
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final fileName = attachment.displayName;
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final fileSize = await file.length();
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final ext = path.extension(fileName).toLowerCase();
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final isImage = ['.jpg', '.jpeg', '.png', '.gif', '.webp'].contains(ext);
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yield FileUploadState(
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file: file,
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fileName: fileName,
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fileSize: fileSize,
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progress: 0.0,
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status: FileUploadStatus.failed,
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error: e.toString(),
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isImage: isImage,
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);
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}
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}
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// Upload multiple files
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Stream<List<FileUploadState>> uploadMultipleFiles(
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List<LocalAttachment> attachments,
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) async* {
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final states = <String, FileUploadState>{};
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for (final attachment in attachments) {
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final uploadStream = uploadFile(attachment);
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await for (final state in uploadStream) {
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states[attachment.file.path] = state;
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yield states.values.toList();
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}
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}
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}
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// Format file size for display
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String formatFileSize(int bytes) {
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if (bytes < 1024) return '$bytes B';
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if (bytes < 1024 * 1024) return '${(bytes / 1024).toStringAsFixed(1)} KB';
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if (bytes < 1024 * 1024 * 1024) {
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return '${(bytes / (1024 * 1024)).toStringAsFixed(1)} MB';
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}
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return '${(bytes / (1024 * 1024 * 1024)).toStringAsFixed(1)} GB';
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}
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// Get file icon based on extension
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String getFileIcon(String fileName) {
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final ext = path.extension(fileName).toLowerCase();
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// Documents
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if (['.pdf', '.doc', '.docx'].contains(ext)) return '📄';
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if (['.xls', '.xlsx'].contains(ext)) return '📊';
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if (['.ppt', '.pptx'].contains(ext)) return '📊';
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// Images
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if (['.jpg', '.jpeg', '.png', '.gif', '.webp'].contains(ext)) return '🖼️';
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// Code
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if (['.js', '.ts', '.py', '.dart', '.java', '.cpp'].contains(ext)) {
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return '💻';
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}
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if (['.html', '.css', '.json', '.xml'].contains(ext)) return '🌐';
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// Archives
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if (['.zip', '.rar', '.7z', '.tar', '.gz'].contains(ext)) return '📦';
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// Media
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if (['.mp3', '.wav', '.flac', '.m4a'].contains(ext)) return '🎵';
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if (['.mp4', '.avi', '.mov', '.mkv'].contains(ext)) return '🎬';
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return '📎';
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}
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}
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// File upload state
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class FileUploadState {
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final File file;
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final String fileName;
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final int fileSize;
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final double progress;
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final FileUploadStatus status;
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final String? fileId;
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final String? error;
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final bool? isImage; // Added for image files
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FileUploadState({
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required this.file,
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required this.fileName,
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required this.fileSize,
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required this.progress,
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required this.status,
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this.fileId,
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this.error,
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this.isImage, // Added for image files
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});
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String get formattedSize {
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if (fileSize < 1024) return '$fileSize B';
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if (fileSize < 1024 * 1024) {
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return '${(fileSize / 1024).toStringAsFixed(1)} KB';
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}
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if (fileSize < 1024 * 1024 * 1024) {
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return '${(fileSize / (1024 * 1024)).toStringAsFixed(1)} MB';
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}
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return '${(fileSize / (1024 * 1024 * 1024)).toStringAsFixed(1)} GB';
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}
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String get fileIcon {
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final ext = path.extension(fileName).toLowerCase();
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// Documents
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if (['.pdf', '.doc', '.docx'].contains(ext)) return '📄';
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if (['.xls', '.xlsx'].contains(ext)) return '📊';
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if (['.ppt', '.pptx'].contains(ext)) return '📊';
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// Images
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if (['.jpg', '.jpeg', '.png', '.gif', '.webp'].contains(ext)) return '🖼️';
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// Code
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if (['.js', '.ts', '.py', '.dart', '.java', '.cpp'].contains(ext)) {
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return '💻';
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}
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if (['.html', '.css', '.json', '.xml'].contains(ext)) return '🌐';
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// Archives
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if (['.zip', '.rar', '.7z', '.tar', '.gz'].contains(ext)) return '📦';
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// Media
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if (['.mp3', '.wav', '.flac', '.m4a'].contains(ext)) return '🎵';
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if (['.mp4', '.avi', '.mov', '.mkv'].contains(ext)) return '🎬';
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return '📎';
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}
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}
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enum FileUploadStatus { pending, uploading, completed, failed }
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// Mock file attachment service for reviewer mode
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class MockFileAttachmentService {
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final ImagePicker _imagePicker = ImagePicker();
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Future<List<LocalAttachment>> pickFiles({
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bool allowMultiple = true,
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List<String>? allowedExtensions,
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}) async {
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try {
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final result = await FilePicker.platform.pickFiles(
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allowMultiple: allowMultiple,
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type: allowedExtensions != null ? FileType.custom : FileType.any,
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allowedExtensions: allowedExtensions,
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);
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if (result == null || result.files.isEmpty) {
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return [];
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}
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return result.files.where((file) => file.path != null).map((file) {
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final displayName = _deriveDisplayName(
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preferredName: file.name,
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filePath: file.path!,
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fallbackPrefix: 'attachment',
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);
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return LocalAttachment(
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file: File(file.path!),
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displayName: displayName,
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);
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}).toList();
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} catch (e) {
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throw Exception('Failed to pick files: $e');
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}
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}
|
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|
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Future<LocalAttachment?> pickImage() async {
|
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try {
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final XFile? image = await _imagePicker.pickImage(
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source: ImageSource.gallery,
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imageQuality: 85,
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);
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if (image == null) return null;
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final file = File(image.path);
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final displayName = _deriveDisplayName(
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preferredName: image.name,
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|
filePath: image.path,
|
|
fallbackPrefix: 'photo',
|
|
);
|
|
return LocalAttachment(file: file, displayName: displayName);
|
|
} catch (e) {
|
|
throw Exception('Failed to pick image: $e');
|
|
}
|
|
}
|
|
|
|
Future<LocalAttachment?> takePhoto() async {
|
|
try {
|
|
final XFile? photo = await _imagePicker.pickImage(
|
|
source: ImageSource.camera,
|
|
imageQuality: 85,
|
|
);
|
|
if (photo == null) return null;
|
|
final file = File(photo.path);
|
|
final displayName = _deriveDisplayName(
|
|
preferredName: photo.name,
|
|
filePath: photo.path,
|
|
fallbackPrefix: 'photo',
|
|
);
|
|
return LocalAttachment(file: file, displayName: displayName);
|
|
} catch (e) {
|
|
throw Exception('Failed to take photo: $e');
|
|
}
|
|
}
|
|
|
|
// Mock upload file with progress tracking
|
|
Stream<FileUploadState> uploadFile(LocalAttachment attachment) async* {
|
|
DebugLogger.log(
|
|
'mock-upload',
|
|
scope: 'attachments/mock',
|
|
data: {
|
|
'path': attachment.file.path,
|
|
'displayName': attachment.displayName,
|
|
},
|
|
);
|
|
|
|
final file = attachment.file;
|
|
final fileName = attachment.displayName;
|
|
final fileSize = await file.length();
|
|
|
|
// Yield initial state
|
|
yield FileUploadState(
|
|
file: file,
|
|
fileName: fileName,
|
|
fileSize: fileSize,
|
|
progress: 0.0,
|
|
status: FileUploadStatus.uploading,
|
|
isImage: attachment.isImage,
|
|
);
|
|
|
|
// Simulate upload progress
|
|
for (int i = 1; i <= 10; i++) {
|
|
await Future.delayed(const Duration(milliseconds: 100));
|
|
yield FileUploadState(
|
|
file: file,
|
|
fileName: fileName,
|
|
fileSize: fileSize,
|
|
progress: i / 10,
|
|
status: FileUploadStatus.uploading,
|
|
isImage: attachment.isImage,
|
|
);
|
|
}
|
|
|
|
// Yield completed state with mock file ID
|
|
yield FileUploadState(
|
|
file: file,
|
|
fileName: fileName,
|
|
fileSize: fileSize,
|
|
progress: 1.0,
|
|
status: FileUploadStatus.completed,
|
|
fileId: 'mock_file_${DateTime.now().millisecondsSinceEpoch}',
|
|
isImage: attachment.isImage,
|
|
);
|
|
|
|
DebugLogger.log('mock-complete', scope: 'attachments/mock');
|
|
}
|
|
|
|
Future<List<String>> uploadFiles(
|
|
List<LocalAttachment> attachments, {
|
|
Function(int, int)? onProgress,
|
|
required String conversationId,
|
|
}) async {
|
|
final uploadIds = <String>[];
|
|
|
|
for (int i = 0; i < attachments.length; i++) {
|
|
if (onProgress != null) {
|
|
for (int j = 0; j <= 100; j += 10) {
|
|
await Future.delayed(const Duration(milliseconds: 50));
|
|
onProgress(i, j);
|
|
}
|
|
}
|
|
uploadIds.add('mock_upload_${DateTime.now().millisecondsSinceEpoch}_$i');
|
|
}
|
|
|
|
return uploadIds;
|
|
}
|
|
}
|
|
|
|
// Providers
|
|
final fileAttachmentServiceProvider = Provider<dynamic>((ref) {
|
|
final isReviewerMode = ref.watch(reviewerModeProvider);
|
|
|
|
if (isReviewerMode) {
|
|
return MockFileAttachmentService();
|
|
}
|
|
|
|
final apiService = ref.watch(apiServiceProvider);
|
|
if (apiService == null) return null;
|
|
return FileAttachmentService(apiService);
|
|
});
|
|
|
|
// State notifier for managing attached files
|
|
class AttachedFilesNotifier extends Notifier<List<FileUploadState>> {
|
|
@override
|
|
List<FileUploadState> build() => [];
|
|
|
|
void addFiles(List<LocalAttachment> attachments) {
|
|
final newStates = attachments
|
|
.map(
|
|
(attachment) => FileUploadState(
|
|
file: attachment.file,
|
|
fileName: attachment.displayName,
|
|
fileSize: attachment.sizeInBytes,
|
|
progress: 0.0,
|
|
status: FileUploadStatus.pending,
|
|
isImage: attachment.isImage,
|
|
),
|
|
)
|
|
.toList();
|
|
|
|
state = [...state, ...newStates];
|
|
}
|
|
|
|
void updateFileState(String filePath, FileUploadState newState) {
|
|
state = [
|
|
for (final fileState in state)
|
|
if (fileState.file.path == filePath) newState else fileState,
|
|
];
|
|
}
|
|
|
|
void removeFile(String filePath) {
|
|
state = state
|
|
.where((fileState) => fileState.file.path != filePath)
|
|
.toList();
|
|
}
|
|
|
|
void clearAll() {
|
|
state = [];
|
|
}
|
|
}
|
|
|
|
final attachedFilesProvider =
|
|
NotifierProvider<AttachedFilesNotifier, List<FileUploadState>>(
|
|
AttachedFilesNotifier.new,
|
|
);
|