72 lines
2.4 KiB
Python
72 lines
2.4 KiB
Python
"""initial schema: channels + messages
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Revision ID: 0001
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Revises:
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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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from sqlalchemy.dialects import postgresql
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revision: str = "0001"
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down_revision: Union[str, None] = None
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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.create_table(
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"channels",
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sa.Column("id", sa.Integer(), primary_key=True),
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sa.Column("tg_id", sa.BigInteger(), nullable=True, unique=True),
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sa.Column("identifier", sa.String(length=255), nullable=False, unique=True),
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sa.Column("title", sa.String(length=512), nullable=True),
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sa.Column("is_active", sa.Boolean(), nullable=False, server_default=sa.text("true")),
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sa.Column("last_message_id", sa.BigInteger(), nullable=True),
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sa.Column("last_polled_at", sa.DateTime(timezone=True), nullable=True),
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sa.Column(
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"created_at",
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sa.DateTime(timezone=True),
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nullable=False,
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server_default=sa.func.now(),
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),
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)
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op.create_table(
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"messages",
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sa.Column("id", sa.Integer(), primary_key=True),
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sa.Column(
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"channel_id",
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sa.Integer(),
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sa.ForeignKey("channels.id", ondelete="CASCADE"),
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nullable=False,
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),
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sa.Column("tg_message_id", sa.BigInteger(), nullable=False),
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sa.Column("date", sa.DateTime(timezone=True), nullable=False),
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sa.Column("text", sa.Text(), nullable=True),
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sa.Column("sender_id", sa.BigInteger(), nullable=True),
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sa.Column("has_media", sa.Boolean(), nullable=False, server_default=sa.text("false")),
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sa.Column("views", sa.Integer(), nullable=True),
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sa.Column("forwards", sa.Integer(), nullable=True),
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sa.Column("raw", postgresql.JSONB(), nullable=True),
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sa.Column(
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"fetched_at",
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sa.DateTime(timezone=True),
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nullable=False,
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server_default=sa.func.now(),
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),
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sa.UniqueConstraint("channel_id", "tg_message_id", name="uq_channel_message"),
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)
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op.create_index(
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"ix_messages_channel_date", "messages", ["channel_id", "date"], unique=False
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)
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def downgrade() -> None:
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op.drop_index("ix_messages_channel_date", table_name="messages")
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op.drop_table("messages")
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op.drop_table("channels")
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