<?php

namespace App\Shared\Installation;

use Illuminate\Database\PostgresConnection;

/** Compatibility at installation time only; runtime business connections are untouched. */
final class CompositionSchemaConnection extends PostgresConnection
{
    public string $originalPermissionCheck;
    public ?CompositionSchemaBuilder $compositionBuilder=null;

    public function getSchemaBuilder()
    {
        $this->useDefaultSchemaGrammar();
        return $this->compositionBuilder??=new CompositionSchemaBuilder($this);
    }

    public function statement($query,$bindings=[])
    {
        // Older migrations replaced the permission whitelist. Preserve its original
        // branches as well as the migration's additions, without granting any right.
        if(preg_match('/^ALTER TABLE permission_grants ADD CONSTRAINT permission_grants_scope_check CHECK \((.*)\)$/s',$query,$m)){
            $query='ALTER TABLE permission_grants ADD CONSTRAINT permission_grants_scope_check CHECK (('.$this->originalPermissionCheck.') OR ('.$m[1].'))';
        }
        return parent::statement($query,$bindings);
    }
}