<?php

namespace App\Shared\Context;

use App\Modules\Identity\Services\Audit;
use Illuminate\Support\Facades\DB;

/** Explicit, append-only associations reuse the existing immutable audit store.
 * Legacy rows are never assigned from their names, creators or absence of a link.
 */
final class ModuleRecords
{
    public const AREAS = ['clients','services','service_drafts','billing_drafts'];
    public static function active(): ?string { return request()->attributes->get('sgf_module'); }
    public static function query(string $table)
    {
        $query=DB::table($table);
        $module=self::active();
        if (!$module) return $query; // CLI domain proofs have no HTTP module selection.
        if (str_starts_with($table,'a_') && in_array(substr($table,2),self::AREAS,true)) {
            self::constrain($query,$table,substr($table,2),$module);
        } elseif ($table==='si_invoices') {
            $query->whereIn('draft_id',self::query('a_billing_drafts')->select('id'));
        }
        return $query;
    }
    public static function constrain($query,string $table,string $area,string $module): void
    {
        $query->whereExists(function($q)use($table,$area,$module){
            $q->selectRaw('1')->from('identity_audit as ma')->where('ma.action','module.record.associated')
                ->whereColumn('ma.tenant_id',$table.'.tenant_id')->whereColumn('ma.company_id',$table.'.company_id')
                ->whereRaw("ma.details::jsonb->>'area' = ?",[$area])
                ->whereRaw("ma.details::jsonb->>'record_id' = {$table}.id::text")
                ->whereRaw("ma.details::jsonb->>'module_id' = ?",[$module])
                ->whereNotExists(function($revoked){
                    $revoked->selectRaw('1')->from('identity_audit as mr')->where('mr.action','module.record.disassociated')
                        ->whereColumn('mr.tenant_id','ma.tenant_id')->whereColumn('mr.company_id','ma.company_id')->whereColumn('mr.id','>','ma.id')
                        ->whereRaw("mr.details::jsonb->>'area' = ma.details::jsonb->>'area'")
                        ->whereRaw("mr.details::jsonb->>'record_id' = ma.details::jsonb->>'record_id'")
                        ->whereRaw("mr.details::jsonb->>'module_id' = ma.details::jsonb->>'module_id'");
                });
        });
    }
    public static function associate(string $area,int $id,int $actor,array $scope,string $module,string $reason,bool $remove=false,?int $version=null): void
    {
        Audit::record($remove?'module.record.disassociated':'module.record.associated',$actor,$scope['tenant_id'],$scope['company_id'],$scope['unit_id']??null,
            details:['area'=>$area,'record_id'=>$id,'module_id'=>$module,'reason'=>$reason,'version'=>$version]);
    }
}