add functions to parse link details jsons and list+apply migrations

archivebox/legacy/storage/sql.py

@@ -1,6 +1,7 @@
 __package__ = 'archivebox.legacy.storage'
 
-from typing import List, Iterator
+from io import StringIO
+from typing import List, Tuple, Iterator
 
 from ..schema import Link
 from ..util import enforce_types
@@ -27,3 +28,32 @@ def write_sql_main_index(links: List[Link], out_dir: str=OUTPUT_DIR) -> None:
     for link in links:
         info = {k: v for k, v in link._asdict().items() if k in Page.keys}
         Page.objects.update_or_create(url=link.url, defaults=info)
+
+
+@enforce_types
+def list_migrations(out_dir: str=OUTPUT_DIR) -> List[Tuple[bool, str]]:
+    setup_django(out_dir, check_db=False)
+    from django.core.management import call_command
+    out = StringIO()
+    call_command("showmigrations", list=True, stdout=out)
+    out.seek(0)
+    migrations = []
+    for line in out.readlines():
+        if line.strip() and ']' in line:
+            status_str, name_str = line.strip().split(']', 1)
+            is_applied = 'X' in status_str
+            migration_name = name_str.strip()
+            migrations.append((is_applied, migration_name))
+
+    return migrations
+
+@enforce_types
+def apply_migrations(out_dir: str=OUTPUT_DIR) -> List[str]:
+    setup_django(out_dir, check_db=False)
+    from django.core.management import call_command
+    null, out = StringIO(), StringIO()
+    call_command("makemigrations", interactive=False, stdout=null)
+    call_command("migrate", interactive=False, stdout=out)
+    out.seek(0)
+
+    return [line.strip() for line in out.readlines() if line.strip()]