Refactored DocumentService.update_progress (#5642)

### What problem does this PR solve?

Refactored DocumentService.update_progress

### Type of change

- [x] Bug Fix (non-breaking change which fixes an issue)

api/db/db_models.py

@@ -843,8 +843,8 @@ class Task(DataBaseModel):
     id = CharField(max_length=32, primary_key=True)
     doc_id = CharField(max_length=32, null=False, index=True)
     from_page = IntegerField(default=0)
-
     to_page = IntegerField(default=100000000)
+    task_type = CharField(max_length=32, null=False, default="")
 
     begin_at = DateTimeField(null=True, index=True)
     process_duation = FloatField(default=0)
@@ -1115,3 +1115,10 @@ def migrate_db():
             )
         except Exception:
             pass
+        try:
+            migrate(
+                migrator.add_column("task", "task_type",
+                                    CharField(max_length=32, null=False, default=""))
+            )
+        except Exception:
+            pass