"""0006 alerts

Revision ID: 0006
Revises: 0005
Create Date: 2026-04-07
"""

from alembic import op
import sqlalchemy as sa

revision = "0006"
down_revision = "0005"
branch_labels = None
depends_on = None


def upgrade() -> None:
    op.create_table(
        "alerts",
        sa.Column("id", sa.Integer(), autoincrement=True, nullable=False),
        sa.Column(
            "device_id",
            sa.Integer(),
            sa.ForeignKey("devices.id", ondelete="CASCADE"),
            nullable=False,
        ),
        sa.Column("status", sa.String(20), nullable=False, server_default="open"),
        sa.Column("message", sa.Text(), nullable=False),
        sa.Column("created_at", sa.DateTime(timezone=True), nullable=False),
        sa.Column("acknowledged_at", sa.DateTime(timezone=True), nullable=True),
        sa.Column(
            "acknowledged_by",
            sa.Integer(),
            sa.ForeignKey("users.id", ondelete="SET NULL"),
            nullable=True,
        ),
        sa.Column("resolved_at", sa.DateTime(timezone=True), nullable=True),
        sa.PrimaryKeyConstraint("id"),
    )
    op.create_index("ix_alerts_device_status", "alerts", ["device_id", "status"])
    op.create_index("ix_alerts_status_created", "alerts", ["status", "created_at"])


def downgrade() -> None:
    op.drop_index("ix_alerts_status_created", table_name="alerts")
    op.drop_index("ix_alerts_device_status", table_name="alerts")
    op.drop_table("alerts")