"""add notifications table

Revision ID: 6a41fa07bd94
Revises: 0001
Create Date: 2026-02-20 19:07:40.634385

"""
from typing import Sequence, Union

from alembic import op
import sqlalchemy as sa


# revision identifiers, used by Alembic.
revision: str = '6a41fa07bd94'
down_revision: Union[str, None] = '0001'
branch_labels: Union[str, Sequence[str], None] = None
depends_on: Union[str, Sequence[str], None] = None


def upgrade() -> None:
    # ### commands auto generated by Alembic - please adjust! ###
    op.create_table('notifications',
    sa.Column('user_id', sa.UUID(), nullable=False),
    sa.Column('job_id', sa.UUID(), nullable=True),
    sa.Column('project_id', sa.UUID(), nullable=True),
    sa.Column('notification_type', sa.String(length=32), nullable=False),
    sa.Column('title', sa.String(length=255), nullable=False),
    sa.Column('message', sa.Text(), nullable=True),
    sa.Column('payload', sa.JSON(), nullable=True),
    sa.Column('is_read', sa.Boolean(), nullable=False),
    sa.Column('id', sa.UUID(), nullable=False),
    sa.Column('created_at', sa.DateTime(timezone=True), nullable=False),
    sa.Column('updated_at', sa.DateTime(timezone=True), nullable=False),
    sa.Column('is_active', sa.Boolean(), nullable=False),
    sa.ForeignKeyConstraint(['job_id'], ['jobs.id'], ondelete='SET NULL'),
    sa.ForeignKeyConstraint(['project_id'], ['projects.id'], ondelete='SET NULL'),
    sa.ForeignKeyConstraint(['user_id'], ['users.id'], ondelete='CASCADE'),
    sa.PrimaryKeyConstraint('id')
    )
    op.create_index(op.f('ix_notifications_user_id'), 'notifications', ['user_id'], unique=False)
    op.drop_constraint(op.f('uq_users_username'), 'users', type_='unique')
    op.drop_index(op.f('ix_users_username'), table_name='users')
    op.create_index(op.f('ix_users_username'), 'users', ['username'], unique=True)
    # ### end Alembic commands ###


def downgrade() -> None:
    # ### commands auto generated by Alembic - please adjust! ###
    op.drop_index(op.f('ix_users_username'), table_name='users')
    op.create_index(op.f('ix_users_username'), 'users', ['username'], unique=False)
    op.create_unique_constraint(op.f('uq_users_username'), 'users', ['username'], postgresql_nulls_not_distinct=False)
    op.drop_index(op.f('ix_notifications_user_id'), table_name='notifications')
    op.drop_table('notifications')
    # ### end Alembic commands ###