"""Durable jobs: jobs, job_items, job_events.

Revision ID: 0004_durable_jobs
Revises: 0003_thumbnails
Create Date: 2026-07-15
"""

import sqlalchemy as sa
from alembic import op

revision = "0004_durable_jobs"
down_revision = "0003_thumbnails"
branch_labels = None
depends_on = None


def upgrade() -> None:
    op.create_table(
        "jobs",
        sa.Column("id", sa.String(), primary_key=True),
        sa.Column("job_type", sa.String(), nullable=False),
        sa.Column("state", sa.String(), nullable=False),
        sa.Column("lock_key", sa.String(), nullable=True),
        sa.Column("idempotency_key", sa.String(), nullable=True, unique=True),
        sa.Column("lease_owner", sa.String(), nullable=True),
        sa.Column("lease_expires_at", sa.DateTime(timezone=True), nullable=True),
        sa.Column("heartbeat_at", sa.DateTime(timezone=True), nullable=True),
        sa.Column("fencing_token", sa.Integer(), nullable=False, server_default="0"),
        sa.Column("error_code", sa.String(), nullable=True),
        sa.Column("error_message", sa.String(), nullable=True),
        sa.Column(
            "created_at",
            sa.DateTime(timezone=True),
            nullable=False,
            server_default=sa.text("CURRENT_TIMESTAMP"),
        ),
        sa.Column(
            "updated_at",
            sa.DateTime(timezone=True),
            nullable=False,
            server_default=sa.text("CURRENT_TIMESTAMP"),
        ),
        sa.Column("started_at", sa.DateTime(timezone=True), nullable=True),
        sa.Column("finished_at", sa.DateTime(timezone=True), nullable=True),
        sa.Column("version", sa.Integer(), nullable=False, server_default="1"),
    )
    op.create_index("ix_jobs_state", "jobs", ["state"])
    op.create_index("ix_jobs_lock_key", "jobs", ["lock_key"])

    op.create_table(
        "job_items",
        sa.Column("job_id", sa.String(), sa.ForeignKey("jobs.id"), primary_key=True),
        sa.Column("item_key", sa.String(), primary_key=True),
        sa.Column("state", sa.String(), nullable=False),
        sa.Column("attempt_count", sa.Integer(), nullable=False, server_default="0"),
        sa.Column("error_code", sa.String(), nullable=True),
        sa.Column("error_message", sa.String(), nullable=True),
        sa.Column(
            "updated_at",
            sa.DateTime(timezone=True),
            nullable=False,
            server_default=sa.text("CURRENT_TIMESTAMP"),
        ),
    )

    op.create_table(
        "job_events",
        sa.Column("id", sa.String(), primary_key=True),
        sa.Column("job_id", sa.String(), sa.ForeignKey("jobs.id"), nullable=False),
        sa.Column("event_type", sa.String(), nullable=False),
        sa.Column("message", sa.String(), nullable=True),
        sa.Column(
            "created_at",
            sa.DateTime(timezone=True),
            nullable=False,
            server_default=sa.text("CURRENT_TIMESTAMP"),
        ),
    )
    op.create_index("ix_job_events_job_id", "job_events", ["job_id"])


def downgrade() -> None:
    op.drop_table("job_events")
    op.drop_table("job_items")
    op.drop_table("jobs")