чанковая загрузка 50KB, /chunk endpoint, v1.15

site/app.py

@@ -17,6 +17,28 @@ from api import api_bp
 
 load_dotenv()
 
+# Хранилище чанков (в памяти, теряется при рестарте)
+_chunk_store = {}
+
+
+def _save_file_to_db(filename, file_bytes, mime, contract_id):
+    """Сохранить один файл в БД: documents + supplements. Возвращает doc_id или None."""
+    db.execute(
+        "INSERT INTO documents (filename, mime_type, original_bytes, status) VALUES (%s,%s,%s,'uploaded')",
+        (filename, mime, file_bytes),
+    )
+    doc, _ = db.query_one(
+        "SELECT id FROM documents WHERE filename=%s AND status='uploaded' ORDER BY created_at DESC LIMIT 1",
+        (filename,),
+    )
+    doc_id = doc["id"] if doc else None
+    if doc_id:
+        db.execute(
+            "INSERT INTO supplements (contract_id, document_id, type) VALUES (%s,%s,'initial')",
+            (str(contract_id), str(doc_id)),
+        )
+    return doc_id
+
 
 class ContractsApp:
     def __init__(self):
@@ -27,6 +49,7 @@ class ContractsApp:
     def _add_routes(self):
         self.app.add_url_rule("/", "index", self._index, methods=["GET", "POST"])
         self.app.add_url_rule("/parse/<cid>", "parse", self._parse, methods=["GET"])
+        self.app.add_url_rule("/chunk", "chunk", self._chunk_upload, methods=["POST"])
         self.app.add_url_rule("/health", "health", self._health)
         self.app.register_blueprint(test_bp)
         self.app.register_blueprint(upload_bp)
@@ -74,25 +97,71 @@ class ContractsApp:
                 continue
             filename = f.filename
             mime = mimeutil.guess_mime(filename) or f.content_type or "application/octet-stream"
-            file_bytes = f.read()
-
-            db.execute(
-                "INSERT INTO documents (filename, mime_type, original_bytes, status) VALUES (%s,%s,%s,'uploaded')",
-                (filename, mime, file_bytes),
-            )
-            doc, _ = db.query_one(
-                "SELECT id FROM documents WHERE filename=%s AND status='uploaded' ORDER BY created_at DESC LIMIT 1",
-                (filename,),
-            )
-            doc_id = doc["id"] if doc else None
-            if doc_id:
-                db.execute(
-                    "INSERT INTO supplements (contract_id, document_id, type) VALUES (%s,%s,'initial')",
-                    (str(contract_id), str(doc_id)),
-                )
+            _save_file_to_db(filename, f.read(), mime, str(contract_id))
 
         return jsonify({"contract_id": str(contract_id)})
 
+    # ── Чанковая загрузка ──────────────────────────────────────
+
+    def _chunk_upload(self):
+        """Принять чанк файла. На последнем — собрать и сохранить."""
+        upload_id = request.form.get("upload_id", "")
+        filename = request.form.get("filename", "")
+        chunk_index = int(request.form.get("chunk_index", 0))
+        total_chunks = int(request.form.get("total_chunks", 1))
+        cid = request.form.get("cid")
+        chunk_file = request.files.get("chunk")
+        if not chunk_file:
+            return jsonify({"error": "Нет чанка"}), 400
+
+        chunk_data = chunk_file.read()
+
+        if upload_id not in _chunk_store:
+            _chunk_store[upload_id] = {
+                "filename": filename,
+                "mime": mimeutil.guess_mime(filename) or "application/octet-stream",
+                "chunks": [None] * total_chunks,
+                "total": total_chunks,
+                "cid": cid,
+                "received": 0,
+            }
+
+        store = _chunk_store[upload_id]
+        if store["chunks"][chunk_index] is None:
+            store["chunks"][chunk_index] = chunk_data
+            store["received"] += 1
+
+        if store["received"] == total_chunks:
+            # Собрать файл
+            file_bytes = b"".join(store["chunks"])
+            mime = store["mime"]
+            fname = store["filename"]
+            cid = store["cid"]
+
+            # Создать контракт если нет
+            if cid:
+                contract_id = cid
+            else:
+                conn, err = db.connect()
+                if err:
+                    del _chunk_store[upload_id]
+                    return jsonify({"error": f"БД: {err}"}), 500
+                cur = conn.cursor()
+                cur.execute(
+                    "INSERT INTO contracts (number, client) VALUES (%s, %s) RETURNING id",
+                    ("б/н " + __import__("datetime").datetime.now().strftime("%Y%m%d-%H%M"), ""),
+                )
+                contract_id = cur.fetchone()[0]
+                conn.commit()
+                cur.close()
+                conn.close()
+
+            _save_file_to_db(fname, file_bytes, mime, str(contract_id))
+            del _chunk_store[upload_id]
+            return jsonify({"contract_id": str(contract_id)})
+
+        return jsonify({"chunk": chunk_index, "received": store["received"], "total": total_chunks})
+
     def _show_contract(self, cid):
         """Показать договор с кнопкой «Обработать»."""
         contract, _ = db.query_one("SELECT id,number,created_at FROM contracts WHERE id=%s", (cid,))