5b5e89e383
- Go: Add overlay_json to Post model, CreatePost handler, and all post queries - Flutter: Rename QuipTextOverlay → QuipOverlayItem with type enum (text/sticker) - QuipOverlayItem: add id field, content replaces text, backward-compat alias - quip_video_item: parse overlay_json and render non-interactive overlays in feed - quip_upload_provider: accept overlayJson param and pass to publishPost - api_service: add overlayJson param to publish
82 lines
2.5 KiB
Dart
82 lines
2.5 KiB
Dart
import 'dart:io';
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import 'package:flutter/services.dart';
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import 'package:flutter_image_compress/flutter_image_compress.dart';
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import 'package:image/image.dart' as img;
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import 'media/ffmpeg.dart';
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class MediaSanitizer {
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static Future<File> sanitizeImage(File rawFile) async {
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final tempDir = Directory.systemTemp;
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final targetPath =
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'${tempDir.path}${Platform.pathSeparator}sanitized_${DateTime.now().microsecondsSinceEpoch}.jpg';
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try {
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final result = await FlutterImageCompress.compressAndGetFile(
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rawFile.absolute.path,
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targetPath,
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quality: 88,
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format: CompressFormat.jpeg,
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keepExif: false,
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autoCorrectionAngle: true,
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);
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if (result != null) {
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return File(result.path);
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}
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} on MissingPluginException {
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// Fall through to pure Dart fallback when native plugin isn't available.
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}
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final bytes = await rawFile.readAsBytes();
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final decoded = img.decodeImage(bytes);
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if (decoded == null) {
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throw Exception('Failed to sanitize image');
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}
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final sanitized = img.encodeJpg(decoded, quality: 88);
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final output = File(targetPath);
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await output.writeAsBytes(sanitized, flush: true);
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return output;
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}
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static Future<File> sanitizeVideo(File rawFile) async {
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if (!await rawFile.exists()) {
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throw Exception('Video file does not exist');
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}
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final fileSize = await rawFile.length();
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const maxSize = 50 * 1024 * 1024; // 50MB limit for videos
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if (fileSize > maxSize) {
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throw Exception('Video size exceeds 50MB limit');
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}
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final fileName = rawFile.path.split('/').last.toLowerCase();
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final extension = fileName.split('.').last;
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const validExtensions = {'mp4', 'mov', 'webm'};
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if (!validExtensions.contains(extension)) {
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throw Exception('Unsupported video format: $extension');
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}
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// Strip all metadata (GPS, device info, timestamps) via FFmpeg remux — no re-encode.
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try {
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final tempDir = Directory.systemTemp;
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final output = File(
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'${tempDir.path}${Platform.pathSeparator}stripped_${DateTime.now().microsecondsSinceEpoch}.mp4',
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);
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final session = await FFmpegKit.execute(
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'-y -i "${rawFile.path}" -map_metadata -1 -c copy "${output.path}"',
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);
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final rc = await session.getReturnCode();
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if (ReturnCode.isSuccess(rc) && await output.exists()) {
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return output;
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}
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} catch (_) {
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// FFmpeg unavailable — fall through and return original
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}
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return rawFile;
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}
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}
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