feat: folders db migration

backend/open_webui/migrations/versions/c69f45358db4_add_folder_table.py

@@ -0,0 +1,41 @@
+"""Add folder table
+
+Revision ID: c69f45358db4
+Revises: 3ab32c4b8f59
+Create Date: 2024-10-16 02:02:35.241684
+
+"""
+
+from alembic import op
+import sqlalchemy as sa
+
+revision = "c69f45358db4"
+down_revision = "3ab32c4b8f59"
+branch_labels = None
+depends_on = None
+
+
+def upgrade():
+    op.create_table(
+        "folder",
+        sa.Column("id", sa.Text(), primary_key=True, nullable=False),
+        sa.Column("parent_id", sa.Text(), nullable=True),
+        sa.Column("user_id", sa.Text(), nullable=True),
+        sa.Column("name", sa.Text(), nullable=False),
+        sa.Column("items", sa.JSON(), nullable=True),
+        sa.Column("meta", sa.JSON(), nullable=True),
+        sa.Column(
+            "created_at", sa.DateTime(), server_default=sa.func.now(), nullable=False
+        ),
+        sa.Column(
+            "updated_at",
+            sa.DateTime(),
+            nullable=False,
+            server_default=sa.func.now(),
+            onupdate=sa.func.now(),
+        ),
+    )
+
+
+def downgrade():
+    op.drop_table("folder")