"""add user role

Revision ID: b514cca2d47b
Revises: 5f462d2d9d25
Create Date: 2022-06-08 17:24:51.305129

"""
from alembic import op
import sqlalchemy as sa

from areas.apps.apps_service import AppsService

# revision identifiers, used by Alembic.
revision = 'b514cca2d47b'
down_revision = '5f462d2d9d25'
branch_labels = None
depends_on = None


def upgrade():
    # ### end Alembic commands ###

    # Insert role "user" as ID 2
    op.execute("INSERT INTO `role` (id, `name`) VALUES (2, 'user')")
    # Insert role "no access" as ID 3
    op.execute("INSERT INTO `role` (id, `name`) VALUES (3, 'no access')")
    # Set role_id 2 to all current "user" users which by have NULL role ID
    op.execute("UPDATE app_role SET role_id = 2 WHERE role_id IS NULL")

    # Add 'no access' role for all users that don't have any roles for specific apps 
    app_ids = [app['id'] for app in AppsService.get_apps()]
    app_roles = AppsService.get_app_roles()
    user_ids = [app_role['user_id'] for app_role in app_roles]

    for user_id in user_ids:
        existing_app_ids = [x['app_id'] for x in list(filter(lambda role: role['user_id'] == user_id, app_roles))]
        missing_app_ids = [x for x in app_ids if x not in existing_app_ids]
        
        if len(missing_app_ids) > 0:
            insert_statement = "INSERT INTO app_role (user_id, app_id, role_id) VALUES"
            for app_id in missing_app_ids:
                insert_statement += " ('"+ user_id +"'," + str(app_id) +",3),"
            op.execute(insert_statement[:-1])


def downgrade():
    # Revert all users role_id to NULL where role is 'user'
    op.execute("UPDATE app_role SET role_id = NULL WHERE role_id = 2")
    # Delete role 'user' from roles
    op.execute("DELETE FROM `role` WHERE id = 2")

    # Delete all user app roles where role is 'no access' with role_id 3
    op.execute("DELETE FROM app_role WHERE role_id = 3")
    # Delete role 'no access' from roles
    op.execute("DELETE FROM `role` WHERE id = 3")