"""Add reliability leases, schedule deduplication, and profile context."""

from collections.abc import Sequence

import sqlalchemy as sa
from alembic import op

revision: str = "20260804_0006"
down_revision: str | Sequence[str] | None = "20260804_0005"
branch_labels: str | Sequence[str] | None = None
depends_on: str | Sequence[str] | None = None


def upgrade() -> None:
    with op.batch_alter_table("projects") as batch:
        batch.add_column(sa.Column("custom_curation_template", sa.Text()))

    with op.batch_alter_table("web_sessions") as batch:
        batch.add_column(sa.Column("usage_profile_id", sa.String(36)))
        batch.create_index("ix_web_sessions_usage_profile_id", ["usage_profile_id"])
        batch.create_foreign_key(
            "fk_web_sessions_usage_profile",
            "usage_profiles",
            ["usage_profile_id"],
            ["id"],
            ondelete="SET NULL",
        )

    with op.batch_alter_table("curation_attempts") as batch:
        batch.add_column(sa.Column("attempt_key", sa.String(64)))
    op.execute("UPDATE curation_attempts SET attempt_key = id WHERE attempt_key IS NULL")
    with op.batch_alter_table("curation_attempts") as batch:
        batch.alter_column("attempt_key", nullable=False)
        batch.create_index("ix_curation_attempts_attempt_key", ["attempt_key"], unique=True)

    with op.batch_alter_table("git_sync_jobs") as batch:
        batch.add_column(sa.Column("lease_owner", sa.String(140)))
        batch.add_column(sa.Column("lease_expires_at", sa.DateTime(timezone=True)))
        batch.create_index("ix_git_sync_jobs_lease_owner", ["lease_owner"])
        batch.create_index("ix_git_sync_jobs_lease_expires_at", ["lease_expires_at"])

    op.create_table(
        "curation_schedule_triggers",
        sa.Column("id", sa.String(36), primary_key=True),
        sa.Column(
            "schedule_id",
            sa.String(36),
            sa.ForeignKey("curation_schedules.id", ondelete="CASCADE"),
            nullable=False,
        ),
        sa.Column("trigger_key", sa.String(180), nullable=False, unique=True),
        sa.Column("scheduled_for", sa.DateTime(timezone=True), nullable=False),
        sa.Column("job_ids_json", sa.Text(), nullable=False, server_default="[]"),
        sa.Column("status", sa.String(32), nullable=False, server_default="created"),
        sa.Column("created_at", sa.DateTime(timezone=True), nullable=False),
    )
    op.create_index(
        "ix_curation_schedule_triggers_schedule_id",
        "curation_schedule_triggers",
        ["schedule_id"],
    )
    op.create_index(
        "ix_curation_schedule_triggers_trigger_key",
        "curation_schedule_triggers",
        ["trigger_key"],
        unique=True,
    )
    op.create_index(
        "ix_curation_schedule_triggers_scheduled_for",
        "curation_schedule_triggers",
        ["scheduled_for"],
    )
    op.create_index(
        "ix_curation_schedule_triggers_status",
        "curation_schedule_triggers",
        ["status"],
    )


def downgrade() -> None:
    op.drop_table("curation_schedule_triggers")
    with op.batch_alter_table("git_sync_jobs") as batch:
        batch.drop_index("ix_git_sync_jobs_lease_expires_at")
        batch.drop_index("ix_git_sync_jobs_lease_owner")
        batch.drop_column("lease_expires_at")
        batch.drop_column("lease_owner")
    with op.batch_alter_table("curation_attempts") as batch:
        batch.drop_index("ix_curation_attempts_attempt_key")
        batch.drop_column("attempt_key")
    with op.batch_alter_table("web_sessions") as batch:
        batch.drop_constraint("fk_web_sessions_usage_profile", type_="foreignkey")
        batch.drop_index("ix_web_sessions_usage_profile_id")
        batch.drop_column("usage_profile_id")
    with op.batch_alter_table("projects") as batch:
        batch.drop_column("custom_curation_template")