prompt: We are currently solving the following issue within our repository. Here is the issue text:
  --- BEGIN ISSUE ---
  Replace links in the challenge copying command
  People might use full url links in the page HTML, use a regex to replace the links using the new challenge short name.
  
  --- END ISSUE ---
  
  Below are some code segments, each from a relevant file. One or more of these files may contain bugs.
  --- BEGIN FILES ---
  Path: `app/grandchallenge/challenges/management/commands/copy_challenge.py`
  Content:
  ```
  1 from django.core.management import BaseCommand, CommandError
  2 
  3 from grandchallenge.challenges.models import Challenge
  4 from grandchallenge.pages.models import Page
  5 
  6 
  7 class Command(BaseCommand):
  8     help = "Creates a copy of a challenge"
  9 
  10     challenge_fields = [
  11         "creator",
  12         "description",
  13         "educational",
  14         "disclaimer",
  15         "require_participant_review",
  16         "use_registration_page",
  17         "registration_page_text",
  18         "use_evaluation",
  19         "logo",
  20         "banner",
  21     ]
  22 
  23     challenge_m2m_fields = [
  24         "task_types",
  25         "modalities",
  26         "structures",
  27     ]
  28 
  29     config_fields = [
  30         "use_teams",
  31         "score_title",
  32         "score_jsonpath",
  33         "score_error_jsonpath",
  34         "score_default_sort",
  35         "score_decimal_places",
  36         "extra_results_columns",
  37         "scoring_method_choice",
  38         "result_display_choice",
  39         "allow_submission_comments",
  40         "display_submission_comments",
  41         "supplementary_file_choice",
  42         "supplementary_file_label",
  43         "supplementary_file_help_text",
  44         "show_supplementary_file_link",
  45         "publication_url_choice",
  46         "show_publication_url",
  47         "daily_submission_limit",
  48         "submission_page_html",
  49         "auto_publish_new_results",
  50         "display_all_metrics",
  51         "submission_join_key",
  52     ]
  53 
  54     page_fields = [
  55         "title",
  56         "permission_lvl",
  57         "order",
  58         "display_title",
  59         "hidden",
  60         "html",
  61     ]
  62 
  63     def add_arguments(self, parser):
  64         parser.add_argument("source", type=str)
  65         parser.add_argument("dest", type=str)
  66 
  67     def handle(self, *args, **options):
  68         src_name = options.pop("source")
  69         dest_name = options.pop("dest")
  70 
  71         if src_name.lower() == dest_name.lower():
  72             raise CommandError("Source and dest names must be different")
  73 
  74         src_challenge = Challenge.objects.get(short_name__iexact=src_name)
  75         dest_challenge = self._create_new_challenge(
  76             src_challenge=src_challenge, dest_name=dest_name
  77         )
  78 
  79         self._copy_m2m_fields(
  80             src_challenge=src_challenge, dest_challenge=dest_challenge
  81         )
  82         self._copy_evaluation_config(
  83             src_challenge=src_challenge, dest_challenge=dest_challenge
  84         )
  85         self._copy_pages(
  86             src_challenge=src_challenge, dest_challenge=dest_challenge
  87         )
  88         self._copy_admins(
  89             src_challenge=src_challenge, dest_challenge=dest_challenge
  90         )
  91 
  92     def _create_new_challenge(self, *, src_challenge, dest_name):
  93         new_challenge = Challenge(
  94             short_name=dest_name,
  95             **{f: getattr(src_challenge, f) for f in self.challenge_fields},
  96         )
  97         new_challenge.full_clean()
  98         new_challenge.save()
  99         return new_challenge
  100 
  101     def _copy_m2m_fields(self, *, src_challenge, dest_challenge):
  102         for f in self.challenge_m2m_fields:
  103             src_m2m = getattr(src_challenge, f)
  104             dest_m2m = getattr(dest_challenge, f)
  105             dest_m2m.set(src_m2m.all())
  106 
  107     def _copy_evaluation_config(self, *, src_challenge, dest_challenge):
  108         src_config = src_challenge.evaluation_config
  109         dest_config = dest_challenge.evaluation_config
  110 
  111         for attr in self.config_fields:
  112             setattr(dest_config, attr, getattr(src_config, attr))
  113 
  114         dest_config.save()
  115 
  116     def _copy_pages(self, *, src_challenge, dest_challenge):
  117         src_pages = src_challenge.page_set.all()
  118 
  119         for src_page in src_pages:
  120             Page.objects.create(
  121                 challenge=dest_challenge,
  122                 **{f: getattr(src_page, f) for f in self.page_fields},
  123             )
  124 
  125     def _copy_admins(self, *, src_challenge, dest_challenge):
  126         for u in src_challenge.get_admins():
  127             dest_challenge.add_admin(u)
  128
  ```
  --- END FILES ---
  
  Please first localize the bug based on the issue statement, and then generate a patch according to the `git diff` format fenced by three backticks.
  
  Here is an example:
  
  ```diff
  diff --git a/examples/server_async.py b/examples/server_async.py
  --- a/examples/server_async.py
  +++ b/examples/server_async.py
  @@ -313,4 +313,4 @@
   
   
   if __name__ == "__main__":
  -    asyncio.run(run_async_server("."), debug=True)
  +    asyncio.run(run_async_server(), debug=True)
  diff --git a/examples/server_sync.py b/examples/server_sync.py
  --- a/examples/server_sync.py
  +++ b/examples/server_sync.py
  @@ -313,5 +313,5 @@
   
   
   if __name__ == "__main__":
  -    server = run_sync_server(".")
  +    server = run_sync_server()
       server.shutdown()
  
  ```
  
golden_diff: diff --git a/app/grandchallenge/challenges/management/commands/copy_challenge.py b/app/grandchallenge/challenges/management/commands/copy_challenge.py
  --- a/app/grandchallenge/challenges/management/commands/copy_challenge.py
  +++ b/app/grandchallenge/challenges/management/commands/copy_challenge.py
  @@ -1,3 +1,6 @@
  +import re
  +
  +from django.contrib.sites.models import Site
   from django.core.management import BaseCommand, CommandError
   
   from grandchallenge.challenges.models import Challenge
  @@ -57,7 +60,6 @@
           "order",
           "display_title",
           "hidden",
  -        "html",
       ]
   
       def add_arguments(self, parser):
  @@ -113,12 +115,24 @@
   
           dest_config.save()
   
  +    def _substitute_urls(self, html, domain, old, new):
  +        quote_replace = r"href='([^']*)'"
  +        regex = fr'href="[^/]*//{old}.{domain}([^""]*)"'
  +        html = re.sub(quote_replace, r'href="\1"', html)
  +        return re.sub(regex, fr'href="https://{new}.{domain}\1"', html,)
  +
       def _copy_pages(self, *, src_challenge, dest_challenge):
           src_pages = src_challenge.page_set.all()
   
  +        site = Site.objects.get_current()
  +        domain = site.domain
  +        old = src_challenge.short_name
  +        new = dest_challenge.short_name
  +
           for src_page in src_pages:
               Page.objects.create(
                   challenge=dest_challenge,
  +                html=self._substitute_urls(src_page.html, domain, old, new),
                   **{f: getattr(src_page, f) for f in self.page_fields},
               )
  
verification_info: {"golden_diff": "diff --git a/app/grandchallenge/challenges/management/commands/copy_challenge.py b/app/grandchallenge/challenges/management/commands/copy_challenge.py\n--- a/app/grandchallenge/challenges/management/commands/copy_challenge.py\n+++ b/app/grandchallenge/challenges/management/commands/copy_challenge.py\n@@ -1,3 +1,6 @@\n+import re\n+\n+from django.contrib.sites.models import Site\n from django.core.management import BaseCommand, CommandError\n \n from grandchallenge.challenges.models import Challenge\n@@ -57,7 +60,6 @@\n         \"order\",\n         \"display_title\",\n         \"hidden\",\n-        \"html\",\n     ]\n \n     def add_arguments(self, parser):\n@@ -113,12 +115,24 @@\n \n         dest_config.save()\n \n+    def _substitute_urls(self, html, domain, old, new):\n+        quote_replace = r\"href='([^']*)'\"\n+        regex = fr'href=\"[^/]*//{old}.{domain}([^\"\"]*)\"'\n+        html = re.sub(quote_replace, r'href=\"\\1\"', html)\n+        return re.sub(regex, fr'href=\"https://{new}.{domain}\\1\"', html,)\n+\n     def _copy_pages(self, *, src_challenge, dest_challenge):\n         src_pages = src_challenge.page_set.all()\n \n+        site = Site.objects.get_current()\n+        domain = site.domain\n+        old = src_challenge.short_name\n+        new = dest_challenge.short_name\n+\n         for src_page in src_pages:\n             Page.objects.create(\n                 challenge=dest_challenge,\n+                html=self._substitute_urls(src_page.html, domain, old, new),\n                 **{f: getattr(src_page, f) for f in self.page_fields},\n             )\n", "issue": "Replace links in the challenge copying command\nPeople might use full url links in the page HTML, use a regex to replace the links using the new challenge short name.\n", "before_files": [{"content": "from django.core.management import BaseCommand, CommandError\n\nfrom grandchallenge.challenges.models import Challenge\nfrom grandchallenge.pages.models import Page\n\n\nclass Command(BaseCommand):\n    help = \"Creates a copy of a challenge\"\n\n    challenge_fields = [\n        \"creator\",\n        \"description\",\n        \"educational\",\n        \"disclaimer\",\n        \"require_participant_review\",\n        \"use_registration_page\",\n        \"registration_page_text\",\n        \"use_evaluation\",\n        \"logo\",\n        \"banner\",\n    ]\n\n    challenge_m2m_fields = [\n        \"task_types\",\n        \"modalities\",\n        \"structures\",\n    ]\n\n    config_fields = [\n        \"use_teams\",\n        \"score_title\",\n        \"score_jsonpath\",\n        \"score_error_jsonpath\",\n        \"score_default_sort\",\n        \"score_decimal_places\",\n        \"extra_results_columns\",\n        \"scoring_method_choice\",\n        \"result_display_choice\",\n        \"allow_submission_comments\",\n        \"display_submission_comments\",\n        \"supplementary_file_choice\",\n        \"supplementary_file_label\",\n        \"supplementary_file_help_text\",\n        \"show_supplementary_file_link\",\n        \"publication_url_choice\",\n        \"show_publication_url\",\n        \"daily_submission_limit\",\n        \"submission_page_html\",\n        \"auto_publish_new_results\",\n        \"display_all_metrics\",\n        \"submission_join_key\",\n    ]\n\n    page_fields = [\n        \"title\",\n        \"permission_lvl\",\n        \"order\",\n        \"display_title\",\n        \"hidden\",\n        \"html\",\n    ]\n\n    def add_arguments(self, parser):\n        parser.add_argument(\"source\", type=str)\n        parser.add_argument(\"dest\", type=str)\n\n    def handle(self, *args, **options):\n        src_name = options.pop(\"source\")\n        dest_name = options.pop(\"dest\")\n\n        if src_name.lower() == dest_name.lower():\n            raise CommandError(\"Source and dest names must be different\")\n\n        src_challenge = Challenge.objects.get(short_name__iexact=src_name)\n        dest_challenge = self._create_new_challenge(\n            src_challenge=src_challenge, dest_name=dest_name\n        )\n\n        self._copy_m2m_fields(\n            src_challenge=src_challenge, dest_challenge=dest_challenge\n        )\n        self._copy_evaluation_config(\n            src_challenge=src_challenge, dest_challenge=dest_challenge\n        )\n        self._copy_pages(\n            src_challenge=src_challenge, dest_challenge=dest_challenge\n        )\n        self._copy_admins(\n            src_challenge=src_challenge, dest_challenge=dest_challenge\n        )\n\n    def _create_new_challenge(self, *, src_challenge, dest_name):\n        new_challenge = Challenge(\n            short_name=dest_name,\n            **{f: getattr(src_challenge, f) for f in self.challenge_fields},\n        )\n        new_challenge.full_clean()\n        new_challenge.save()\n        return new_challenge\n\n    def _copy_m2m_fields(self, *, src_challenge, dest_challenge):\n        for f in self.challenge_m2m_fields:\n            src_m2m = getattr(src_challenge, f)\n            dest_m2m = getattr(dest_challenge, f)\n            dest_m2m.set(src_m2m.all())\n\n    def _copy_evaluation_config(self, *, src_challenge, dest_challenge):\n        src_config = src_challenge.evaluation_config\n        dest_config = dest_challenge.evaluation_config\n\n        for attr in self.config_fields:\n            setattr(dest_config, attr, getattr(src_config, attr))\n\n        dest_config.save()\n\n    def _copy_pages(self, *, src_challenge, dest_challenge):\n        src_pages = src_challenge.page_set.all()\n\n        for src_page in src_pages:\n            Page.objects.create(\n                challenge=dest_challenge,\n                **{f: getattr(src_page, f) for f in self.page_fields},\n            )\n\n    def _copy_admins(self, *, src_challenge, dest_challenge):\n        for u in src_challenge.get_admins():\n            dest_challenge.add_admin(u)\n", "path": "app/grandchallenge/challenges/management/commands/copy_challenge.py"}], "after_files": [{"content": "import re\n\nfrom django.contrib.sites.models import Site\nfrom django.core.management import BaseCommand, CommandError\n\nfrom grandchallenge.challenges.models import Challenge\nfrom grandchallenge.pages.models import Page\n\n\nclass Command(BaseCommand):\n    help = \"Creates a copy of a challenge\"\n\n    challenge_fields = [\n        \"creator\",\n        \"description\",\n        \"educational\",\n        \"disclaimer\",\n        \"require_participant_review\",\n        \"use_registration_page\",\n        \"registration_page_text\",\n        \"use_evaluation\",\n        \"logo\",\n        \"banner\",\n    ]\n\n    challenge_m2m_fields = [\n        \"task_types\",\n        \"modalities\",\n        \"structures\",\n    ]\n\n    config_fields = [\n        \"use_teams\",\n        \"score_title\",\n        \"score_jsonpath\",\n        \"score_error_jsonpath\",\n        \"score_default_sort\",\n        \"score_decimal_places\",\n        \"extra_results_columns\",\n        \"scoring_method_choice\",\n        \"result_display_choice\",\n        \"allow_submission_comments\",\n        \"display_submission_comments\",\n        \"supplementary_file_choice\",\n        \"supplementary_file_label\",\n        \"supplementary_file_help_text\",\n        \"show_supplementary_file_link\",\n        \"publication_url_choice\",\n        \"show_publication_url\",\n        \"daily_submission_limit\",\n        \"submission_page_html\",\n        \"auto_publish_new_results\",\n        \"display_all_metrics\",\n        \"submission_join_key\",\n    ]\n\n    page_fields = [\n        \"title\",\n        \"permission_lvl\",\n        \"order\",\n        \"display_title\",\n        \"hidden\",\n    ]\n\n    def add_arguments(self, parser):\n        parser.add_argument(\"source\", type=str)\n        parser.add_argument(\"dest\", type=str)\n\n    def handle(self, *args, **options):\n        src_name = options.pop(\"source\")\n        dest_name = options.pop(\"dest\")\n\n        if src_name.lower() == dest_name.lower():\n            raise CommandError(\"Source and dest names must be different\")\n\n        src_challenge = Challenge.objects.get(short_name__iexact=src_name)\n        dest_challenge = self._create_new_challenge(\n            src_challenge=src_challenge, dest_name=dest_name\n        )\n\n        self._copy_m2m_fields(\n            src_challenge=src_challenge, dest_challenge=dest_challenge\n        )\n        self._copy_evaluation_config(\n            src_challenge=src_challenge, dest_challenge=dest_challenge\n        )\n        self._copy_pages(\n            src_challenge=src_challenge, dest_challenge=dest_challenge\n        )\n        self._copy_admins(\n            src_challenge=src_challenge, dest_challenge=dest_challenge\n        )\n\n    def _create_new_challenge(self, *, src_challenge, dest_name):\n        new_challenge = Challenge(\n            short_name=dest_name,\n            **{f: getattr(src_challenge, f) for f in self.challenge_fields},\n        )\n        new_challenge.full_clean()\n        new_challenge.save()\n        return new_challenge\n\n    def _copy_m2m_fields(self, *, src_challenge, dest_challenge):\n        for f in self.challenge_m2m_fields:\n            src_m2m = getattr(src_challenge, f)\n            dest_m2m = getattr(dest_challenge, f)\n            dest_m2m.set(src_m2m.all())\n\n    def _copy_evaluation_config(self, *, src_challenge, dest_challenge):\n        src_config = src_challenge.evaluation_config\n        dest_config = dest_challenge.evaluation_config\n\n        for attr in self.config_fields:\n            setattr(dest_config, attr, getattr(src_config, attr))\n\n        dest_config.save()\n\n    def _substitute_urls(self, html, domain, old, new):\n        quote_replace = r\"href='([^']*)'\"\n        regex = fr'href=\"[^/]*//{old}.{domain}([^\"\"]*)\"'\n        html = re.sub(quote_replace, r'href=\"\\1\"', html)\n        return re.sub(regex, fr'href=\"https://{new}.{domain}\\1\"', html,)\n\n    def _copy_pages(self, *, src_challenge, dest_challenge):\n        src_pages = src_challenge.page_set.all()\n\n        site = Site.objects.get_current()\n        domain = site.domain\n        old = src_challenge.short_name\n        new = dest_challenge.short_name\n\n        for src_page in src_pages:\n            Page.objects.create(\n                challenge=dest_challenge,\n                html=self._substitute_urls(src_page.html, domain, old, new),\n                **{f: getattr(src_page, f) for f in self.page_fields},\n            )\n\n    def _copy_admins(self, *, src_challenge, dest_challenge):\n        for u in src_challenge.get_admins():\n            dest_challenge.add_admin(u)\n", "path": "app/grandchallenge/challenges/management/commands/copy_challenge.py"}]}