"""Add workspace and workspace_memberships tables

Revision ID: 006
Revises: 005
Create Date: 2026-05-15
"""
from typing import Sequence, Union

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

revision: str = "006"
down_revision: Union[str, None] = "005"
branch_labels: Union[str, Sequence[str], None] = None
depends_on: Union[str, Sequence[str], None] = None


def upgrade() -> None:
    op.create_table(
        "workspaces",
        sa.Column("id", postgresql.UUID(as_uuid=True), primary_key=True),
        sa.Column("name", sa.String(255), nullable=False),
        sa.Column("type", sa.String(20), nullable=False, server_default=sa.text("'personal'"), index=True),
        sa.Column("owner_id", postgresql.UUID(as_uuid=True),
                  sa.ForeignKey("users.id", ondelete="CASCADE"), nullable=False, index=True),
        sa.Column("description", sa.Text(), nullable=True),
        sa.Column("created_at", sa.DateTime(timezone=True), server_default=sa.func.now()),
        sa.Column("updated_at", sa.DateTime(timezone=True), server_default=sa.func.now()),
    )

    op.create_table(
        "workspace_memberships",
        sa.Column("id", postgresql.UUID(as_uuid=True), primary_key=True),
        sa.Column("workspace_id", postgresql.UUID(as_uuid=True),
                  sa.ForeignKey("workspaces.id", ondelete="CASCADE"), nullable=False, index=True),
        sa.Column("user_id", postgresql.UUID(as_uuid=True),
                  sa.ForeignKey("users.id", ondelete="CASCADE"), nullable=False, index=True),
        sa.Column("role", sa.String(20), nullable=False, server_default=sa.text("'member'")),
        sa.Column("created_at", sa.DateTime(timezone=True), server_default=sa.func.now()),
        sa.Column("updated_at", sa.DateTime(timezone=True), server_default=sa.func.now()),
    )


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