<?php

declare(strict_types=1);

namespace Tests\Feature\FormBuilder;

use App\FormBuilder\Purposes\PurposeRegistry;
use Illuminate\Database\Eloquent\Relations\Relation;
use Tests\TestCase;

/**
 * Compile-time guard: PurposeRegistry subject types MUST be registered in
 * the morph-map; otherwise polymorphic writes to form_submissions would
 * blow up at runtime. See ARCH-CONSOLIDATION-ADDENDUM-2026-04-24.md Q6.
 *
 * The reverse direction is NOT asserted end-to-end: the morph-map also
 * contains non-purpose domain types (owner_types, activity-log subjects)
 * and framework entries — those are intentionally broader.
 */
final class MorphMapAlignmentTest extends TestCase
{
    public function test_every_purpose_subject_type_is_in_morph_map(): void
    {
        $registry = $this->app->make(PurposeRegistry::class);
        $morphMap = Relation::morphMap();

        foreach ($registry->allSubjectTypes() as $alias) {
            $this->assertArrayHasKey(
                $alias,
                $morphMap,
                "Purpose subject_type '{$alias}' is declared in PurposeRegistry but "
                ."missing from Relation::morphMap() in AppServiceProvider. "
                ."Add it to the 'Domain subject types' block."
            );
        }
    }

    public function test_domain_subject_types_block_matches_registry_exactly(): void
    {
        $registry = $this->app->make(PurposeRegistry::class);
        $registryAliases = $registry->allSubjectTypes();

        // AppServiceProvider::PURPOSE_SUBJECT_FQCN is the single source of
        // truth for which aliases the domain-subject-types block can emit.
        // If the registry adds an alias not present in that lookup, boot()
        // would throw — but we also assert it here for fast feedback.
        $reflection = new \ReflectionClass(\App\Providers\AppServiceProvider::class);
        $lookup = $reflection->getConstant('PURPOSE_SUBJECT_FQCN');
        $this->assertIsArray($lookup);

        foreach ($registryAliases as $alias) {
            $this->assertArrayHasKey(
                $alias,
                $lookup,
                "Purpose subject_type '{$alias}' has no FQCN in "
                ."AppServiceProvider::PURPOSE_SUBJECT_FQCN. Register it there."
            );
        }
    }
}