Convert existing method to django command

Also rename it

server/core/convert_page_translation.py

@@ -11,7 +11,7 @@ logger = get_logger(__name__)
 # todo: make this a django command
 # todo: add language to translate to as an argument
 # todo: write a test maybe
-def migrate_i18n(slug: str, original_slug: str):
+def convert_page_to_translation(slug: str, original_slug: str, language_code="en"):
     """
     Migrate a module and its children to a new locale and links it to
     its translation in the original locale.
@@ -19,9 +19,13 @@ def migrate_i18n(slug: str, original_slug: str):
     @param slug: the slug of the module to migrate
     @param original_slug: the slug of the module in the original locale
     """
-    module = Module.objects.get(slug=slug)
-    original = Module.objects.get(slug=original_slug)
-    en = Locale.objects.get(language_code="en")
+    try:
+        module = Module.objects.get(slug=slug)
+        original = Module.objects.get(slug=original_slug)
+    except Module.DoesNotExist:
+        logger.warning("Module does not exist")
+        return
+    en = Locale.objects.get(language_code=language_code)
     logger.debug("starting this")
     topic: Topic = module.get_parent()
     try:

server/core/management/commands/migrate_translation.py

@@ -0,0 +1,43 @@
+import csv
+import os
+from django.core import management
+from django.core.management import BaseCommand
+
+from basicknowledge.models import BasicKnowledge
+from datetime import date
+
+from core.convert_page_translation import convert_page_to_translation
+
+EN = "en"
+FR = "fr"
+
+
+class Command(BaseCommand):
+    """
+    usage: `python manage.py migrate_translation  --slug slug --original original_slug --language 'en'`
+    """
+
+    def add_arguments(self, parser):
+        parser.add_argument("--slug", type=str, required=True)
+        parser.add_argument("--original", type=str, required=True)
+        parser.add_argument("--language", type=str, choices=[EN, FR], default=EN)
+
+    def handle(self, *_, **options):
+        slug = options.get("slug")
+        original_slug = options.get("original")
+        language_code = options.get("language")
+        self.stdout.write(f"args {slug} {original_slug} {language_code}")
+        convert_page_to_translation(
+            slug=slug, original_slug=original_slug, language_code=language_code
+        )
+        # with open(filename) as f:
+        #     reader = csv.reader(f)
+        #     for name, slugs in reader:
+        #         self.stdout.write(name)
+        #         self.stdout.write(slugs)
+        #         cwd = os.getcwd()
+        #         self.stdout.write(cwd)
+        #         with open(f"{cwd}/exports/{name}.html", "w") as dest:
+        #             management.call_command(
+        #                 "export_instruments", slugs=slugs, stdout=dest
+        #             )