"""Tasks, task events and task results

Revision ID: 0002
Revises: 0001
Create Date: 2026-04-07
"""

from typing import Sequence, Union

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

revision: str = "0002"
down_revision: Union[str, None] = "0001"
branch_labels: Union[str, Sequence[str], None] = None
depends_on: Union[str, Sequence[str], None] = None


def upgrade() -> None:
    op.create_table(
        "tasks",
        sa.Column("id", sa.Uuid(as_uuid=False), primary_key=True),
        sa.Column("type", sa.String(100), nullable=False),
        sa.Column("status", sa.String(20), nullable=False, server_default="pending"),
        sa.Column("target_scope", JSONB, nullable=False),
        sa.Column("params", JSONB, nullable=False, server_default="{}"),
        sa.Column("result", JSONB, nullable=True),
        sa.Column("error_message", sa.Text, nullable=True),
        sa.Column("created_by", sa.Integer, sa.ForeignKey("users.id", ondelete="SET NULL"), nullable=True),
        sa.Column("created_at", sa.DateTime(timezone=True), nullable=False),
        sa.Column("started_at", sa.DateTime(timezone=True), nullable=True),
        sa.Column("finished_at", sa.DateTime(timezone=True), nullable=True),
        sa.Column("heartbeat_at", sa.DateTime(timezone=True), nullable=True),
    )
    op.create_index("ix_tasks_status", "tasks", ["status"])
    op.create_index("ix_tasks_created_by", "tasks", ["created_by"])
    op.create_index("ix_tasks_created_at", "tasks", ["created_at"])

    op.create_table(
        "task_events",
        sa.Column("id", sa.Integer, primary_key=True),
        sa.Column("task_id", sa.Uuid(as_uuid=False), sa.ForeignKey("tasks.id", ondelete="CASCADE"), nullable=False),
        sa.Column("message", sa.Text, nullable=False),
        sa.Column("level", sa.String(10), nullable=False, server_default="info"),
        sa.Column("created_at", sa.DateTime(timezone=True), nullable=False),
    )
    op.create_index("ix_task_events_task_id", "task_events", ["task_id"])

    op.create_table(
        "task_results",
        sa.Column("id", sa.Integer, primary_key=True),
        sa.Column("task_id", sa.Uuid(as_uuid=False), sa.ForeignKey("tasks.id", ondelete="CASCADE"), 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="pending"),
        sa.Column("stdout", sa.Text, nullable=True),
        sa.Column("stderr", sa.Text, nullable=True),
        sa.Column("exit_code", sa.Integer, nullable=True),
        sa.Column("data", JSONB, nullable=True),
        sa.Column("duration_ms", sa.Integer, nullable=True),
        sa.Column("executed_at", sa.DateTime(timezone=True), nullable=True),
    )
    op.create_index("ix_task_results_task_id", "task_results", ["task_id"])
    op.create_index("ix_task_results_device_id", "task_results", ["device_id"])


def downgrade() -> None:
    op.drop_table("task_results")
    op.drop_table("task_events")
    op.drop_table("tasks")