"""tickets and ticket_attachments initial schema

Revision ID: 0001
Revises:
Create Date: 2026-05-25
"""
from typing import Sequence, Union

import sqlalchemy as sa
from alembic import op

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


def upgrade() -> None:
    op.create_table(
        "tickets",
        sa.Column("id",             sa.Integer(),              primary_key=True),
        sa.Column("guid",           sa.String(36),             nullable=False, unique=True),
        sa.Column("user",           sa.String(64),             nullable=False, server_default="kevin"),
        sa.Column("title",          sa.String(256),            nullable=False),
        sa.Column("description",    sa.Text(),                 nullable=True),
        sa.Column("submitted_at",   sa.DateTime(timezone=True), nullable=False),
        sa.Column("status",         sa.String(16),             nullable=False, server_default="open"),
        sa.Column("type",           sa.String(16),             nullable=False, server_default="feature"),
        sa.Column("parent_id",      sa.Integer(),
                  sa.ForeignKey("tickets.id", ondelete="SET NULL"), nullable=True),
        sa.Column("effort",         sa.Integer(),              nullable=True),
        sa.Column("startup_script", sa.Text(),                 nullable=True),
    )
    op.create_index("ix_tickets_parent_id", "tickets", ["parent_id"])

    op.create_table(
        "ticket_attachments",
        sa.Column("id",         sa.Integer(),              primary_key=True),
        sa.Column("ticket_id",  sa.Integer(),
                  sa.ForeignKey("tickets.id", ondelete="CASCADE"), nullable=False),
        sa.Column("title",      sa.String(256),            nullable=False),
        sa.Column("content",    sa.Text(),                 nullable=False),
        sa.Column("created_by", sa.String(64),             nullable=False, server_default="kevin"),
        sa.Column("created_at", sa.DateTime(timezone=True), nullable=False),
    )
    op.create_index("ix_ticket_attachments_ticket_id", "ticket_attachments", ["ticket_id"])


def downgrade() -> None:
    op.drop_index("ix_ticket_attachments_ticket_id", table_name="ticket_attachments")
    op.drop_table("ticket_attachments")
    op.drop_index("ix_tickets_parent_id", table_name="tickets")
    op.drop_table("tickets")