Migration to create the ModerationLog table

Author: marcospri

h/migrations/versions/2aacaede8542_create_the_moderation_log_table.py

@@ -0,0 +1,53 @@
+"""Create the moderation log table."""
+
+import sqlalchemy as sa
+from alembic import op
+from sqlalchemy.dialects import postgresql
+
+from h.db.types import URLSafeUUID
+
+revision = "2aacaede8542"
+down_revision = "bd0cc0e6ed54"
+
+
+def upgrade() -> None:
+    moderation_status_type = postgresql.ENUM(
+        name="moderationstatus",
+        create_type=False,
+    )
+
+    op.create_table(
+        "moderation_log",
+        sa.Column("id", sa.Integer(), autoincrement=True, nullable=False),
+        sa.Column("moderator_id", sa.Integer(), nullable=False),
+        sa.Column("annotation_id", URLSafeUUID(), nullable=False),
+        sa.Column("old_moderation_status", moderation_status_type, nullable=True),
+        sa.Column("new_moderation_status", moderation_status_type, nullable=False),
+        sa.Column(
+            "created", sa.DateTime(), server_default=sa.text("now()"), nullable=False
+        ),
+        sa.ForeignKeyConstraint(
+            ["annotation_id"],
+            ["annotation.id"],
+            name=op.f("fk__moderation_log__annotation_id__annotation"),
+            ondelete="CASCADE",
+        ),
+        sa.ForeignKeyConstraint(
+            ["moderator_id"],
+            ["user.id"],
+            name=op.f("fk__moderation_log__moderator_id_user"),
+            ondelete="CASCADE",
+        ),
+        sa.PrimaryKeyConstraint("id", name=op.f("pk__moderation_log")),
+    )
+    op.create_index(
+        op.f("ix__moderation_log_annotation_id"),
+        "moderation_log",
+        ["annotation_id"],
+        unique=False,
+    )
+
+
+def downgrade() -> None:
+    op.drop_index(op.f("ix__moderation_log_annotation_id"), table_name="moderation_log")
+    op.drop_table("moderation_log")