init

backend/alembic/versions/05d6342e2105_tier_text_not_int.py

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+"""tier text not int
+
+Revision ID: 05d6342e2105
+Revises: 20250506abcd
+Create Date: 2025-05-06 16:42:38.378374
+
+"""
+from typing import Sequence, Union
+from alembic import op
+import sqlalchemy as sa
+from sqlalchemy import text
+
+# revision identifiers, used by Alembic.
+revision: str = '05d6342e2105'
+down_revision: Union[str, None] = '20250506abcd'
+branch_labels: Union[str, Sequence[str], None] = None
+depends_on: Union[str, Sequence[str], None] = None
+
+def upgrade() -> None:
+    # 1) make sure every numeric tier is inside the allowed range
+    #    (optional safety; no type change yet)
+    op.execute("""
+        UPDATE users
+        SET tier = 0
+        WHERE pg_typeof(tier)::text = 'integer'
+          AND tier NOT IN (0,1,2,3);
+    """)
+
+    # 2) ALTER COLUMN to TEXT first – numeric values become '0','1',...
+    op.alter_column(
+        "users", "tier",
+        existing_type=sa.Integer(),
+        type_=sa.Text(),
+        postgresql_using="tier::text",
+        nullable=False,
+        server_default=sa.text("'Online'")
+    )
+
+    # 3) now map the stringified numbers to names
+    op.execute("""
+        UPDATE users SET tier =
+            CASE tier
+                WHEN '0' THEN 'Online'
+                WHEN '1' THEN 'Rank 1'
+                WHEN '2' THEN 'Rank 2'
+                WHEN '3' THEN 'Rank 3'
+                ELSE tier
+            END;
+    """)
+
+def downgrade() -> None:
+    # revert to integer, mapping back Online→0 etc. if you really need it
+    op.alter_column(
+        "users", "tier",
+        existing_type=sa.Text(),
+        type_=sa.Integer(),
+        postgresql_using="""
+            CASE tier
+                WHEN 'Rank 1' THEN 1
+                WHEN 'Rank 2' THEN 2
+                WHEN 'Rank 3' THEN 3
+                ELSE 0
+            END::integer
+        """,
+        server_default=sa.text("0"),
+        nullable=False,
+    )