"""add support ticket messages

Revision ID: eb979313fd21
Revises: e5f6a7b8c9d0
Create Date: 2026-03-17 20:05:37.771991

"""
from typing import Sequence, Union

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


# revision identifiers, used by Alembic.
revision: str = "eb979313fd21"
down_revision: Union[str, Sequence[str], None] = "e5f6a7b8c9d0"
branch_labels: Union[str, Sequence[str], None] = None
depends_on: Union[str, Sequence[str], None] = None


def upgrade() -> None:
    """Create support_ticket_messages table."""
    op.create_table(
        "support_ticket_messages",
        sa.Column(
            "id",
            postgresql.UUID(as_uuid=True),
            primary_key=True,
            nullable=False,
        ),
        sa.Column(
            "ticket_id",
            postgresql.UUID(as_uuid=True),
            sa.ForeignKey("support_tickets.id", ondelete="CASCADE"),
            nullable=False,
        ),
        sa.Column(
            "sender_id",
            postgresql.UUID(as_uuid=True),
            sa.ForeignKey("users.id"),
            nullable=False,
        ),
        sa.Column("sender_role", sa.String(length=50), nullable=False),
        sa.Column("content", sa.Text(), nullable=False),
        sa.Column("created_at", sa.DateTime(), nullable=False),
    )
    op.create_index(
        "ix_support_ticket_messages_ticket_id",
        "support_ticket_messages",
        ["ticket_id"],
    )
    op.create_index(
        "ix_support_ticket_messages_sender_id",
        "support_ticket_messages",
        ["sender_id"],
    )


def downgrade() -> None:
    """Drop support_ticket_messages table."""
    op.drop_index(
        "ix_support_ticket_messages_sender_id",
        table_name="support_ticket_messages",
    )
    op.drop_index(
        "ix_support_ticket_messages_ticket_id",
        table_name="support_ticket_messages",
    )
    op.drop_table("support_ticket_messages")