org_paper_link: Odkazy se jménem účastníka

mo/web/util.py

@@ -3,6 +3,7 @@ from flask_wtf import FlaskForm
 import os
 from sqlalchemy.orm.query import Query
 from typing import Tuple, Optional, Union
+import unicodedata
 import werkzeug.exceptions
 import werkzeug.utils
 import wtforms
@@ -49,32 +50,38 @@ def send_task_statement(round: db.Round) -> Response:
         raise werkzeug.exceptions.NotFound()
 
 
-def task_paper_filename(paper: db.Paper) -> str:
-    """Doporučujeme preloadovat task."""
+def _task_paper_filename(user: db.User, paper: db.Paper) -> str:
+    # Tato jména parsuje dávkový upload
 
-    task = paper.task
+    full_name = user.full_name()
+    ascii_name = (unicodedata.normalize('NFD', full_name)
+                  .encode('ascii', 'ignore')
+                  .decode('utf-8'))
 
-    secure_task_code = werkzeug.utils.secure_filename(task.code)
     if paper.type == db.PaperType.solution:
-        return f'{secure_task_code}-reseni-{paper.for_user}-{paper.paper_id}.pdf'
+        typ = 'reseni'
     elif paper.type == db.PaperType.feedback:
-        return f'{secure_task_code}-opravene-{paper.for_user}-{paper.paper_id}.pdf'
+        typ = 'opravene'
     else:
         assert False
 
+    fn = f'{paper.task.code}_{typ}_{user.user_id}_{paper.paper_id}_{ascii_name}.pdf'
+    return werkzeug.utils.secure_filename(fn)
 
 
 def org_paper_link(contest_or_id: Union[db.Contest, int],
                    site: Optional[db.Place],
                    user: db.User,
                    paper: db.Paper) -> str:
+    """Doporučujeme preloadovat paper.task."""
     if isinstance(contest_or_id, db.Contest):
         contest_or_id = contest_or_id.contest_id
+
     return url_for('org_submit_paper',
                    contest_id=contest_or_id,
                    paper_id=paper.paper_id,
                    site_id=site.place_id if site else None,
-                   filename=task_paper_filename(paper))
+                   filename=_task_paper_filename(user, paper))
 
 
 def send_task_paper(paper: db.Paper) -> Response: