40 lines
1.1 KiB
Python
40 lines
1.1 KiB
Python
"""add grouped_id to messages (Telegram album/media-group key)
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Revision ID: 0003
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Revises: 0002
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Create Date: 2026-05-05
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"""
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from typing import Sequence, Union
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import sqlalchemy as sa
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from alembic import op
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revision: str = "0003"
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down_revision: Union[str, None] = "0002"
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branch_labels: Union[str, Sequence[str], None] = None
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depends_on: Union[str, Sequence[str], None] = None
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def upgrade() -> None:
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op.add_column("messages", sa.Column("grouped_id", sa.BigInteger(), nullable=True))
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op.create_index(
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"ix_messages_grouped_id", "messages", ["channel_id", "grouped_id"]
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)
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# Backfill grouped_id from the stored raw JSONB for existing rows so that
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# albums saved before this migration are grouped retroactively.
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op.execute(
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"""
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UPDATE messages
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SET grouped_id = (raw->>'grouped_id')::bigint
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WHERE grouped_id IS NULL
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AND raw IS NOT NULL
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AND raw->>'grouped_id' IS NOT NULL
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"""
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)
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def downgrade() -> None:
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op.drop_index("ix_messages_grouped_id", table_name="messages")
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op.drop_column("messages", "grouped_id")
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