chore: add command script for alerting submitters with cc licensed re…

…leases

TODO: need to figure out whether we want to switch to a default after a
certain amount of time or just ask people to update. Not sure if the
former is legal..

ref comses/planning#45

django/curator/management/commands/phase_out_cc_licenses.py

@@ -0,0 +1,114 @@
+from django.core.management.base import BaseCommand
+from django.contrib.auth.models import User
+from django.conf import settings
+from core.utils import send_markdown_email
+from library.models import CodebaseRelease
+import os
+import logging
+
+logger = logging.getLogger(__name__)
+
+# temp file to track which user ids have been sent emails
+# in case of failure, we can resume from where we left off
+SENT_EMAILS_FILE_PATH = os.path.join(settings.SHARE_DIR, "sent_cc_emails.txt")
+
+
+class Command(BaseCommand):
+    help = "provides some operations to help with phasing out Creative Commons licenses in the CML"
+
+    def add_arguments(self, parser):
+        parser.add_argument("operation", type=str, choices=["send_emails", "migrate"])
+        parser.add_argument(
+            "--test-user-id",
+            type=int,
+            required=False,
+            help="If specified, only email or migrate the specified user's releases",
+        )
+
+    def handle(self, *args, **options):
+        operation = options["operation"]
+        if operation == "send_emails":
+            self.send_emails(test_user_id=options["test_user_id"])
+        if operation == "migrate":
+            self.migrate(test_user_id=options["test_user_id"])
+
+    def send_emails(self, test_user_id=None):
+        sent_user_ids = self._read_sent_user_ids()
+
+        # get all unique user ids that have submitted codebases with CC licenses
+        releases_with_cc = CodebaseRelease.objects.filter(
+            license__url__icontains="creativecommons.org"
+        )
+        unique_submitter_ids = (
+            releases_with_cc.values_list("submitter", flat=True).distinct()
+            if not test_user_id
+            else [test_user_id]
+        )
+        for submitter_id in unique_submitter_ids:
+            if submitter_id in sent_user_ids:
+                logger.info(f"Email already sent to user {submitter_id}")
+            else:
+                user = User.objects.get(id=submitter_id)
+                releases = releases_with_cc.filter(submitter=user)
+                try:
+                    # send email, if successful, append user id to temp file to mark as sent
+                    send_markdown_email(
+                        subject="CoMSES Net Codebase License Change",
+                        body=self._get_email_body(user, releases),
+                        to=[user.email],
+                    )
+                    with open(SENT_EMAILS_FILE_PATH, "a") as f:
+                        f.write(f"{user.id}\n")
+                    logger.info(f"Email sent to {user.email}")
+                except Exception as e:
+                    logger.error(f"Failed to send email to {user.email}: {e}")
+
+        # check if all submitters have been sent an email
+        sent_user_ids = self._read_sent_user_ids()
+        if not isinstance(unique_submitter_ids, set):
+            unique_submitter_ids = set(unique_submitter_ids)
+        unset_ids = unique_submitter_ids - sent_user_ids
+        if unset_ids:
+            logger.warning(
+                f"Failed to send emails to the following user ids: {unset_ids}"
+            )
+        else:
+            logger.info(
+                f"""
+
+====================================================================
+All emails sent successfully, {SENT_EMAILS_FILE_PATH} can be removed
+====================================================================
+"""
+            )
+
+    def _read_sent_user_ids(self):
+        # read temp file that tracks which user ids have been sent emails
+        try:
+            with open(SENT_EMAILS_FILE_PATH, "r") as f:
+                return {int(line.strip()) for line in f}
+        except FileNotFoundError:
+            return set()
+
+    def _get_email_body(self, user, releases):
+        releases_list = ""
+        for r in releases:
+            releases_list += f"- {r.comses_permanent_url}edit\n"
+
+        return f"""
+Dear {user.member_profile.name},
+        
+We are writing to inform you that we are phasing out the use of Creative Commons licenses in the CoMSES Net Computational Model Library as CC licenses are not recommended for use in software. For more information regarding the reasoning behind this decision, please see the the following from the Creative Commons FAQ: https://creativecommons.org/faq/#can-i-apply-a-creative-commons-license-to-software.
+
+We have identified the following codebases submitted by you that are currently licensed under a Creative Commons license:
+
+{releases_list}
+
+FIXME: what else? ask to change license? with or without migrating to a default in X days?
+
+Sincerely,
+The CoMSES Net Team
+        """
+
+    def migrate(self, test_user_id=None):
+        pass