"""Create notifications table

Revision ID: 005
Revises: 004
Create Date: 2026-03-19

"""
from typing import Sequence, Union

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

revision: str = "005"
down_revision: Union[str, None] = "004"
branch_labels: Union[str, Sequence[str], None] = None
depends_on: Union[str, Sequence[str], None] = None


def upgrade() -> None:
    op.create_table(
        "notifications",
        sa.Column("id", UUID(as_uuid=True), primary_key=True, server_default=sa.text("gen_random_uuid()")),
        sa.Column("user_id", UUID(as_uuid=True), sa.ForeignKey("users.id", ondelete="CASCADE"), nullable=False, index=True),
        sa.Column("title", sa.String(255), nullable=False),
        sa.Column("body", sa.Text, nullable=False),
        sa.Column("type", sa.String(30), nullable=False, server_default="info"),
        sa.Column("channel", sa.String(20), nullable=False, server_default="in_app"),
        sa.Column("status", sa.String(20), nullable=False, server_default="pending"),
        sa.Column("scheduled_at", sa.DateTime(timezone=True), nullable=True),
        sa.Column("sent_at", sa.DateTime(timezone=True), nullable=True),
        sa.Column("read_at", sa.DateTime(timezone=True), nullable=True),
        sa.Column("metadata", JSONB, nullable=True),
        sa.Column("created_at", sa.DateTime(timezone=True), server_default=sa.func.now(), nullable=False),
    )


def downgrade() -> None:
    op.drop_table("notifications")