<?php

declare(strict_types=1);

namespace Tests\Feature\FormBuilder\Options;

use App\Enums\FormBuilder\FormFieldType;
use App\Models\FormBuilder\FormField;
use App\Models\FormBuilder\FormFieldLibrary;
use App\Models\FormBuilder\FormSchema;
use App\Models\Organisation;
use App\Services\FormBuilder\FormFieldOptionService;
use App\Services\FormBuilder\FormFieldService;
use App\Support\Json\JsonCanonicalizer;
use Illuminate\Foundation\Testing\RefreshDatabase;
use Spatie\Activitylog\Models\Activity;
use Tests\TestCase;

/**
 * Dual-emit pattern for option changes per ARCH §17.6.3 (mirrors the
 * §8.6 / §17.4.2 convention from WS-5b/c): every options change on a
 * FormField emits both `field.updated` (carrying the old/new diff in
 * its payload) and `field.options_replaced` (semantic event from
 * FormFieldOptionService::replaceOptions). FormFieldLibrary writes are
 * silent.
 */
final class FormFieldOptionsActivityLogTest extends TestCase
{
    use RefreshDatabase;

    public function test_field_updated_payload_contains_options_diff_when_options_change(): void
    {
        $org = Organisation::factory()->create();
        $schema = FormSchema::factory()->create(['organisation_id' => $org->id]);
        $field = FormField::factory()
            ->withOptions(['a', 'b'])
            ->create([
                'form_schema_id' => $schema->id,
                'field_type' => FormFieldType::SELECT->value,
                'slug' => 'colour',
                'label' => 'Colour',
            ]);

        // Suppress prior activity (factory creation) and re-bound the
        // window for assertion clarity.
        Activity::query()->delete();

        app(FormFieldService::class)->update($field, [
            'options' => [
                ['value' => 'a', 'label' => 'A', 'sort_order' => 0],
                ['value' => 'b', 'label' => 'b', 'sort_order' => 1],
                ['value' => 'c', 'label' => 'c', 'sort_order' => 2],
            ],
        ]);

        $event = Activity::query()
            ->where('subject_type', 'form_field')
            ->where('subject_id', $field->id)
            ->where('description', 'field.updated')
            ->first();
        $this->assertNotNull($event);
        $payload = $event->properties->toArray();
        $this->assertArrayHasKey('options', $payload['old']);
        $this->assertArrayHasKey('options', $payload['new']);
        // RFC-WS-6 session 2.7: activity log properties are canonicalized
        // at write; assertSame on canonical encodings of both sides is
        // byte-stable across MySQL JSON-column round-trip.
        $this->assertSame(
            JsonCanonicalizer::encode([
                ['value' => 'a', 'label' => 'a', 'sort_order' => 0],
                ['value' => 'b', 'label' => 'b', 'sort_order' => 1],
            ]),
            JsonCanonicalizer::encode($payload['old']['options']),
        );
        $this->assertSame(
            JsonCanonicalizer::encode([
                ['value' => 'a', 'label' => 'A', 'sort_order' => 0],
                ['value' => 'b', 'label' => 'b', 'sort_order' => 1],
                ['value' => 'c', 'label' => 'c', 'sort_order' => 2],
            ]),
            JsonCanonicalizer::encode($payload['new']['options']),
        );
    }

    public function test_field_updated_payload_omits_options_key_when_only_label_changed(): void
    {
        $org = Organisation::factory()->create();
        $schema = FormSchema::factory()->create(['organisation_id' => $org->id]);
        $field = FormField::factory()
            ->withOptions(['a', 'b'])
            ->create([
                'form_schema_id' => $schema->id,
                'field_type' => FormFieldType::SELECT->value,
                'slug' => 'choice',
                'label' => 'Old',
            ]);

        Activity::query()->delete();

        app(FormFieldService::class)->update($field, [
            'label' => 'New',
        ]);

        $event = Activity::query()
            ->where('subject_type', 'form_field')
            ->where('subject_id', $field->id)
            ->where('description', 'field.updated')
            ->first();
        $this->assertNotNull($event);
        $payload = $event->properties->toArray();
        $this->assertArrayNotHasKey('options', $payload['old']);
        $this->assertArrayNotHasKey('options', $payload['new']);
    }

    public function test_options_replaced_emits_on_form_field_subject(): void
    {
        $org = Organisation::factory()->create();
        $schema = FormSchema::factory()->create(['organisation_id' => $org->id]);
        $field = FormField::factory()->create([
            'form_schema_id' => $schema->id,
            'field_type' => FormFieldType::SELECT->value,
        ]);

        Activity::query()->delete();

        app(FormFieldOptionService::class)->replaceOptions($field, [
            ['value' => 'x', 'label' => 'X', 'sort_order' => 0],
        ]);

        $this->assertNotNull(Activity::query()
            ->where('subject_type', 'form_field')
            ->where('subject_id', $field->id)
            ->where('description', 'field.options_replaced')
            ->first());
    }

    public function test_options_replaced_silent_on_library_subject(): void
    {
        $org = Organisation::factory()->create();
        $library = FormFieldLibrary::factory()->create(['organisation_id' => $org->id]);

        Activity::query()->delete();

        app(FormFieldOptionService::class)->replaceOptions($library, [
            ['value' => 'x', 'label' => 'X', 'sort_order' => 0],
        ]);

        $this->assertNull(Activity::query()
            ->where('subject_type', 'form_field_library')
            ->where('description', 'field.options_replaced')
            ->first());
    }
}