"""Create settings and generated_pdfs tables

Revision ID: 006
Revises: 005
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, ARRAY

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(
        "settings",
        sa.Column("id", UUID(as_uuid=True), primary_key=True, server_default=sa.text("gen_random_uuid()")),
        sa.Column("key", sa.String(100), unique=True, nullable=False, index=True),
        sa.Column("value", JSONB, nullable=False),
        sa.Column("updated_by", UUID(as_uuid=True), sa.ForeignKey("users.id", ondelete="SET NULL"), nullable=True),
        sa.Column("updated_at", sa.DateTime(timezone=True), server_default=sa.func.now(), nullable=False),
        sa.Column("created_at", sa.DateTime(timezone=True), server_default=sa.func.now(), nullable=False),
    )

    # Seed default settings
    op.execute("""
        INSERT INTO settings (id, key, value) VALUES
        (gen_random_uuid(), 'self_registration_enabled', 'true'),
        (gen_random_uuid(), 'default_max_chats', '10')
    """)

    op.create_table(
        "generated_pdfs",
        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("storage_path", sa.Text, nullable=False),
        sa.Column("source_document_ids", ARRAY(UUID(as_uuid=True)), nullable=True),
        sa.Column("source_chat_id", UUID(as_uuid=True), sa.ForeignKey("chats.id", ondelete="SET NULL"), nullable=True),
        sa.Column("created_at", sa.DateTime(timezone=True), server_default=sa.func.now(), nullable=False),
    )


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