"""presence hypertable

Revision ID: e5c1f0a72b9d
Revises: d4b9f2e6a1c7
Create Date: 2026-05-29 21:00:00.000000

"""

from collections.abc import Sequence

import sqlalchemy as sa
from alembic import op
from sqlalchemy.dialects import postgresql

revision: str = "e5c1f0a72b9d"
down_revision: str | None = "d4b9f2e6a1c7"
branch_labels: str | Sequence[str] | None = None
depends_on: str | Sequence[str] | None = None


def upgrade() -> None:
    op.create_table(
        "presence",
        sa.Column("account_id", sa.Integer(), nullable=False),
        sa.Column("peer_id", sa.BigInteger(), nullable=False),
        sa.Column("ts", sa.DateTime(timezone=True), nullable=False),
        sa.Column("status", sa.String(), nullable=False),
        sa.Column("last_online_date", sa.DateTime(timezone=True), nullable=True),
        sa.Column("next_offline_date", sa.DateTime(timezone=True), nullable=True),
        sa.Column("raw", postgresql.JSONB(astext_type=sa.Text()), nullable=False),
        sa.PrimaryKeyConstraint("account_id", "peer_id", "ts"),
    )

    op.execute(
        "SELECT create_hypertable('presence', by_range('ts', INTERVAL '1 week'))"
    )
    op.execute(
        "ALTER TABLE presence SET ("
        "timescaledb.enable_columnstore = true, "
        "timescaledb.segmentby = 'peer_id', "
        "timescaledb.orderby = 'ts DESC')"
    )
    op.execute("CALL add_columnstore_policy('presence', after => INTERVAL '30 days')")

    op.execute(
        "CREATE MATERIALIZED VIEW presence_hourly "
        "WITH (timescaledb.continuous) AS "
        "SELECT time_bucket('1 hour', ts) AS bucket, "
        "account_id, peer_id, "
        "count(*) AS samples, "
        "count(*) FILTER (WHERE status = 'online') AS online_samples, "
        "max(ts) AS last_seen "
        "FROM presence "
        "GROUP BY bucket, account_id, peer_id "
        "WITH NO DATA"
    )
    op.execute(
        "SELECT add_continuous_aggregate_policy('presence_hourly', "
        "start_offset => INTERVAL '3 hours', "
        "end_offset => INTERVAL '1 hour', "
        "schedule_interval => INTERVAL '1 hour')"
    )


def downgrade() -> None:
    op.execute("DROP MATERIALIZED VIEW IF EXISTS presence_hourly")
    op.drop_table("presence")