"""Initial schema

Revision ID: 0001
Revises:
Create Date: 2023-06-01

"""
from typing import Sequence, Union

from alembic import op
import sqlalchemy as sa


# revision identifiers, used by Alembic.
revision: str = '0001'
down_revision: Union[str, None] = None
branch_labels: Union[str, Sequence[str], None] = None
depends_on: Union[str, Sequence[str], None] = None


def upgrade() -> None:
    # Create users table
    op.create_table(
        'users',
        sa.Column('id', sa.Integer(), nullable=False),
        sa.Column('email', sa.String(), nullable=False),
        sa.Column('username', sa.String(), nullable=False),
        sa.Column('hashed_password', sa.String(), nullable=False),
        sa.Column('is_active', sa.Boolean(), nullable=True),
        sa.Column('created_at', sa.DateTime(), nullable=True),
        sa.Column('updated_at', sa.DateTime(), nullable=True),
        sa.PrimaryKeyConstraint('id')
    )
    op.create_index(op.f('ix_users_email'), 'users', ['email'], unique=True)
    op.create_index(op.f('ix_users_id'), 'users', ['id'], unique=False)
    op.create_index(op.f('ix_users_username'), 'users', ['username'], unique=True)

    # Create collections table
    op.create_table(
        'collections',
        sa.Column('id', sa.Integer(), nullable=False),
        sa.Column('name', sa.String(), nullable=True),
        sa.Column('description', sa.String(), nullable=True),
        sa.Column('owner_id', sa.Integer(), nullable=True),
        sa.Column('created_at', sa.DateTime(), nullable=True),
        sa.Column('updated_at', sa.DateTime(), nullable=True),
        sa.ForeignKeyConstraint(['owner_id'], ['users.id'], ),
        sa.PrimaryKeyConstraint('id')
    )
    op.create_index(op.f('ix_collections_id'), 'collections', ['id'], unique=False)
    op.create_index(op.f('ix_collections_name'), 'collections', ['name'], unique=False)

    # Create notes table
    op.create_table(
        'notes',
        sa.Column('id', sa.Integer(), nullable=False),
        sa.Column('title', sa.String(), nullable=True),
        sa.Column('content', sa.Text(), nullable=True),
        sa.Column('is_archived', sa.Boolean(), nullable=True),
        sa.Column('owner_id', sa.Integer(), nullable=True),
        sa.Column('collection_id', sa.Integer(), nullable=True),
        sa.Column('created_at', sa.DateTime(), nullable=True),
        sa.Column('updated_at', sa.DateTime(), nullable=True),
        sa.ForeignKeyConstraint(['collection_id'], ['collections.id'], ),
        sa.ForeignKeyConstraint(['owner_id'], ['users.id'], ),
        sa.PrimaryKeyConstraint('id')
    )
    op.create_index(op.f('ix_notes_created_at'), 'notes', ['created_at'], unique=False)
    op.create_index(op.f('ix_notes_id'), 'notes', ['id'], unique=False)
    op.create_index(op.f('ix_notes_title'), 'notes', ['title'], unique=False)


def downgrade() -> None:
    # Drop notes table
    op.drop_index(op.f('ix_notes_title'), table_name='notes')
    op.drop_index(op.f('ix_notes_id'), table_name='notes')
    op.drop_index(op.f('ix_notes_created_at'), table_name='notes')
    op.drop_table('notes')

    # Drop collections table
    op.drop_index(op.f('ix_collections_name'), table_name='collections')
    op.drop_index(op.f('ix_collections_id'), table_name='collections')
    op.drop_table('collections')

    # Drop users table
    op.drop_index(op.f('ix_users_username'), table_name='users')
    op.drop_index(op.f('ix_users_id'), table_name='users')
    op.drop_index(op.f('ix_users_email'), table_name='users')
    op.drop_table('users')