"""add compose_attachments

Files uploaded for outgoing mail (the compose "Attach" action). Referenced by a
draft's payload.attachment_ids and assembled into the MIME at send time.

Revision ID: 0005
Revises: 0004
Create Date: 2026-07-17
"""

from __future__ import annotations

from collections.abc import Sequence

import sqlalchemy as sa
from alembic import op

revision: str = "0005"
down_revision: str | None = "0004"
branch_labels: str | Sequence[str] | None = None
depends_on: str | Sequence[str] | None = None


def upgrade() -> None:
    op.create_table(
        "compose_attachments",
        sa.Column(
            "id",
            sa.dialects.postgresql.UUID(as_uuid=True),
            primary_key=True,
            server_default=sa.text("gen_random_uuid()"),
        ),
        sa.Column(
            "user_id",
            sa.dialects.postgresql.UUID(as_uuid=True),
            sa.ForeignKey("users.id", ondelete="CASCADE"),
            nullable=False,
        ),
        sa.Column("filename", sa.Text(), nullable=False),
        sa.Column("mime_type", sa.Text(), nullable=False),
        sa.Column("size_bytes", sa.Integer(), nullable=False),
        sa.Column("blob_sha256", sa.Text(), nullable=False),
        sa.Column(
            "created_at",
            sa.TIMESTAMP(timezone=True),
            nullable=False,
            server_default=sa.text("now()"),
        ),
    )


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