Geopackage export: geometriák exportálása dátum szerinti szűréssel

lib/core/geopackage_exporter.dart

@@ -29,7 +29,7 @@ import '../enums/note_type.dart';
 class GeoPackageExporter {
   // ── Publikus belépési pont ────────────────────────────────────────
 
-  Future<void> exportProject() async {
+  Future<void> exportProject({DateTime? since}) async {
     final project = ProjectService.to.activeProject.value;
     final projectId = ProjectService.to.activeProjectId;
     final name = project?.name ?? 'projekt';
@@ -42,11 +42,11 @@ class GeoPackageExporter {
     try {
       // 1. GeoPackage létrehozása
       final gpkgPath = p.join(workDir.path, '$name.gpkg');
-      await _buildGpkg(gpkgPath, projectId);
+      await _buildGpkg(gpkgPath, projectId, since);
 
       // 2. Médiafájlok összegyűjtése
       final mediaDir = Directory(p.join(workDir.path, 'media'));
-      await _collectMedia(projectId, mediaDir);
+      await _collectMedia(projectId, mediaDir, since);
 
       // 3. ZIP csomagolás
       final zipPath = p.join(tmpDir.path, '${name}_$ts.zip');
@@ -65,13 +65,13 @@ class GeoPackageExporter {
 
   // ── GeoPackage (.gpkg) létrehozása ───────────────────────────────
 
-  Future<void> _buildGpkg(String path, int? projectId) async {
+  Future<void> _buildGpkg(String path, int? projectId, DateTime? since) async {
     final db = await openDatabase(path);
     try {
       await _initGpkg(db);
-      await _exportNoteItems(db, projectId);
-      await _exportMeasuredPoints(db, projectId);
-      await _exportTracks(db, projectId);
+      await _exportNoteItems(db, projectId, since);
+      await _exportMeasuredPoints(db, projectId, since);
+      await _exportTracks(db, projectId, since);
     } finally {
       await db.close();
     }
@@ -187,11 +187,17 @@ class GeoPackageExporter {
 
   // ── NoteItem exportok ─────────────────────────────────────────────
 
-  Future<void> _exportNoteItems(Database db, int? projectId) async {
+  Future<void> _exportNoteItems(
+      Database db, int? projectId, DateTime? since) async {
     final items = await AppDatabase.instance.listNoteItems(projectId);
-    final points = items.where((i) => i.type == NoteType.point).toList();
-    final lines = items.where((i) => i.type == NoteType.line).toList();
-    final polygons = items.where((i) => i.type == NoteType.polygon).toList();
+
+    final filtered = since != null
+        ? items.where((i) => i.createdAt.isAfter(since)).toList()
+        : items;
+
+    final points = filtered.where((i) => i.type == NoteType.point).toList();
+    final lines = filtered.where((i) => i.type == NoteType.line).toList();
+    final polygons = filtered.where((i) => i.type == NoteType.polygon).toList();
 
     if (points.isNotEmpty) await _exportPoints(db, points);
     if (lines.isNotEmpty) await _exportLines(db, lines);
@@ -310,12 +316,19 @@ class GeoPackageExporter {
 
   // ── Bemért pontok exportja ────────────────────────────────────────
 
-  Future<void> _exportMeasuredPoints(Database db, int? projectId) async {
+  Future<void> _exportMeasuredPoints(
+      Database db, int? projectId, DateTime? since) async {
     final points = projectId != null
         ? await AppDatabase.instance.listMeasuredPoints(projectId)
         : <MeasuredPoint>[];
     if (points.isEmpty) return;
 
+    final filtered = since != null
+        ? points.where((p) => p.timestamp.isAfter(since)).toList()
+        : points;
+
+    if (filtered.isEmpty) return;
+
     await db.execute('''
       CREATE TABLE measured_points (
         id           INTEGER PRIMARY KEY,
@@ -353,13 +366,20 @@ class GeoPackageExporter {
 
   // ── Track exportja ────────────────────────────────────────────────
 
-  Future<void> _exportTracks(Database db, int? projectId) async {
+  Future<void> _exportTracks(
+      Database db, int? projectId, DateTime? since) async {
     final tracks = await AppDatabase.instance.listTracks();
-    final filtered = projectId != null
+    var filtered = projectId != null
         ? tracks.where((t) => t.projectId == projectId).toList()
         : tracks;
     if (filtered.isEmpty) return;
 
+    if (since != null) {
+      filtered = filtered.where((t) => t.startTime.isAfter(since)).toList();
+    }
+
+    if (filtered.isEmpty) return;
+
     await db.execute('''
       CREATE TABLE tracks (
         id               INTEGER PRIMARY KEY,
@@ -395,7 +415,8 @@ class GeoPackageExporter {
 
   // ── Médiafájlok másolása ──────────────────────────────────────────
 
-  Future<void> _collectMedia(int? projectId, Directory mediaDir) async {
+  Future<void> _collectMedia(
+      int? projectId, Directory mediaDir, DateTime? since) async {
     if (projectId == null) return;
 
     final photos = Directory(p.join(mediaDir.path, 'photos'));
@@ -404,7 +425,12 @@ class GeoPackageExporter {
     await audios.create(recursive: true);
 
     final items = await AppDatabase.instance.listNoteItems(projectId);
-    for (final item in items) {
+
+    final filtered = since != null
+        ? items.where((i) => i.createdAt.isAfter(since)).toList()
+        : items;
+
+    for (final item in filtered) {
       // Fotók
       final photoList = await AppDatabase.instance.listNotePhotos(item.id!);
       for (final photo in photoList) {