"""add_projects_and_signal_links

Revision ID: add_projects_001
Revises: f38d00f6fee4
Create Date: 2026-02-21 10:30:00.000000

"""
from typing import Sequence, Union

from alembic import op
import sqlalchemy as sa


# revision identifiers, used by Alembic.
revision: str = 'add_projects_001'
down_revision: Union[str, Sequence[str], None] = 'f38d00f6fee4'
branch_labels: Union[str, Sequence[str], None] = None
depends_on: Union[str, Sequence[str], None] = None


def upgrade() -> None:
    """Upgrade schema."""
    # Create projects table
    op.create_table(
        'projects',
        sa.Column('id', sa.UUID(), nullable=False),
        sa.Column('title', sa.String(length=255), nullable=False),
        sa.Column('description', sa.Text(), nullable=True),
        sa.Column('status', sa.String(length=50), server_default='active', nullable=False),
        sa.Column('domain_id', sa.UUID(), nullable=True),
        sa.Column('assigned_role', sa.String(length=50), nullable=True),
        sa.Column('signal_count', sa.Integer(), server_default='0', nullable=False),
        sa.Column('created_at', sa.DateTime(), nullable=False),
        sa.Column('updated_at', sa.DateTime(), nullable=False),
        sa.ForeignKeyConstraint(['domain_id'], ['project_domains'], name=op.f('fk_projects_domain_id_project_domains')),
        sa.PrimaryKeyConstraint('id', name=op.f('pk_projects'))
    )
    op.create_index('projects', ['status'], ['created_at'], name='ix_projects_status_created_at')

    # Create project_signal_links table
    op.create_table(
        'project_signal_links',
        sa.Column('id', sa.UUID(), nullable=False),
        sa.Column('project_id', sa.UUID(), nullable=False),
        sa.Column('signal_id', sa.UUID(), nullable=False),
        sa.Column('link_type', sa.String(length=50), server_default='related', nullable=False),
        sa.Column('relevance_score', sa.Float(), server_default='1.0', nullable=False),
        sa.Column('created_at', sa.DateTime(), nullable=False),
        sa.ForeignKeyConstraint(['project_id'], ['projects'], name=op.f('fk_project_signal_links_project_id_projects')),
        sa.ForeignKeyConstraint(['signal_id'], ['signals'], name=op.f('fk_project_signal_links_signal_id_signals')),
        sa.PrimaryKeyConstraint('id', name=op.f('pk_project_signal_links'))
    )
    op.create_index('project_signal_links', ['project_id'], name='ix_project_signal_links_project_id')
    op.create_index('project_signal_links', ['signal_id'], name='ix_project_signal_links_signal_id')


def downgrade() -> None:
    """Downgrade schema."""
    op.drop_index('project_signal_links', 'ix_project_signal_links_signal_id', table_name='project_signal_links')
    op.drop_index('project_signal_links', 'ix_project_signal_links_project_id', table_name='project_signal_links')
    op.drop_table('project_signal_links')
    op.drop_index('projects', 'ix_projects_status_created_at', table_name='projects')
    op.drop_table('projects')