"""add mindmap shares table

Revision ID: add_mindmap_shares
Revises: add_missing_user_fields
Create Date: 2025-05-10 23:20:00.000000

"""
from alembic import op
import sqlalchemy as sa
from sqlalchemy.dialects import sqlite

# revision identifiers, used by Alembic.
revision = 'add_mindmap_shares'
down_revision = 'add_missing_user_fields'
branch_labels = None
depends_on = None


def upgrade():
    # Erstelle PermissionType Enum
    op.create_table('mindmap_share',
        sa.Column('id', sa.Integer(), nullable=False),
        sa.Column('mindmap_id', sa.Integer(), nullable=False),
        sa.Column('shared_by_id', sa.Integer(), nullable=False),
        sa.Column('shared_with_id', sa.Integer(), nullable=False),
        sa.Column('permission_type', sa.String(20), nullable=False),
        sa.Column('created_at', sa.DateTime(), nullable=True),
        sa.Column('last_accessed', sa.DateTime(), nullable=True),
        sa.ForeignKeyConstraint(['mindmap_id'], ['user_mindmap.id'], ),
        sa.ForeignKeyConstraint(['shared_by_id'], ['user.id'], ),
        sa.ForeignKeyConstraint(['shared_with_id'], ['user.id'], ),
        sa.PrimaryKeyConstraint('id'),
        sa.UniqueConstraint('mindmap_id', 'shared_with_id', name='unique_mindmap_share')
    )


def downgrade():
    op.drop_table('mindmap_share')