<?php

declare(strict_types=1);

namespace Tests\Feature\FormBuilder\Bindings;

use App\Enums\FormBuilder\ApplyStatus;
use App\Enums\FormBuilder\FormFieldBindingMergeStrategy;
use App\Enums\FormBuilder\FormFieldType;
use App\Enums\FormBuilder\FormPurpose;
use App\FormBuilder\Bindings\BindingPassResult;
use App\FormBuilder\Bindings\FormBindingApplicator;
use App\Models\CrowdType;
use App\Models\Event;
use App\Models\FormBuilder\FormField;
use App\Models\FormBuilder\FormFieldBinding;
use App\Models\FormBuilder\FormSchema;
use App\Models\FormBuilder\FormSubmission;
use App\Models\FormBuilder\FormValue;
use App\Models\Person;
use Illuminate\Foundation\Testing\RefreshDatabase;
use Illuminate\Support\Facades\DB;
use Spatie\Activitylog\Models\Activity;
use Tests\TestCase;

final class FormBindingApplicatorIntegrationTest extends TestCase
{
    use RefreshDatabase;

    public function test_event_registration_happy_path(): void
    {
        $submission = $this->makeEventRegistrationSubmission();

        $result = DB::transaction(fn (): BindingPassResult => $this->applicator()->apply($submission));

        $this->assertSame(ApplyStatus::COMPLETED, $result->applyStatus());
        $this->assertSame('person', $result->provisionedSubjectType);

        // Person was created with email + first_name + last_name from bindings.
        $person = Person::query()->withoutGlobalScopes()->where('email', 'jan@example.nl')->first();
        $this->assertNotNull($person);
        $this->assertSame('Jan', $person->first_name);
        $this->assertSame('Jansen', $person->last_name);

        // Activity log: one pass-level + N child entries.
        $passActivity = Activity::query()
            ->where('description', 'form_submission.bindings_pass_completed')
            ->where('subject_id', $submission->id)
            ->first();
        $this->assertNotNull($passActivity);
        $this->assertSame(2, (int) $passActivity->properties->get('binding_count'));

        $childActivities = Activity::query()
            ->where('description', 'form_submission.binding_applied')
            ->where('subject_id', $submission->id)
            ->get();
        $this->assertCount(2, $childActivities);
        foreach ($childActivities as $child) {
            $this->assertSame((string) $passActivity->id, $child->properties->get('parent_activity_id'));
        }
    }

    public function test_no_transaction_guard_present(): void
    {
        // RefreshDatabase wraps every PHPUnit test in a transaction; the
        // guard is exercised via the listener path (ApplyBindingsOnFormSubmit)
        // which opens its own transaction explicitly. Verify the guard
        // exists in the source by checking for the throw of
        // FormBindingInfraException (per RFC-WS-6 §Q3 v1.3 addition 2 — the
        // 'no_transaction' developer-error maps onto temporary_error so the
        // GlitchTip alert + retry-after workflow fires).
        $reflection = new \ReflectionClass(FormBindingApplicator::class);
        $source = file_get_contents($reflection->getFileName());
        $this->assertStringContainsString('FormBindingInfraException', $source);
        $this->assertStringContainsString('DB::transactionLevel()', $source);
        $this->assertStringContainsString('must be invoked inside DB::transaction', $source);
    }

    private function applicator(): FormBindingApplicator
    {
        return $this->app->make(FormBindingApplicator::class);
    }

    private function makeEventRegistrationSubmission(): FormSubmission
    {
        $event = Event::factory()->create();
        $crowdType = CrowdType::factory()->create([
            'organisation_id' => $event->organisation_id,
            'is_active' => true,
        ]);

        $schema = FormSchema::factory()->create([
            'organisation_id' => $event->organisation_id,
            'purpose' => FormPurpose::EVENT_REGISTRATION->value,
            'default_crowd_type_id' => $crowdType->id,
        ]);

        $emailField = FormField::factory()->create([
            'form_schema_id' => $schema->id,
            'field_type' => FormFieldType::EMAIL->value,
            'slug' => 'email',
        ]);
        $emailBinding = FormFieldBinding::factory()->forField($emailField)
            ->entityOwned('person', 'email')
            ->create([
                'is_identity_key' => true,
                'merge_strategy' => FormFieldBindingMergeStrategy::Overwrite->value,
                'trust_level' => 80,
            ]);

        $firstNameField = FormField::factory()->create([
            'form_schema_id' => $schema->id,
            'slug' => 'first_name',
        ]);
        $firstNameBinding = FormFieldBinding::factory()->forField($firstNameField)
            ->entityOwned('person', 'first_name')
            ->create([
                'merge_strategy' => FormFieldBindingMergeStrategy::Overwrite->value,
                'trust_level' => 70,
            ]);

        $lastNameField = FormField::factory()->create([
            'form_schema_id' => $schema->id,
            'slug' => 'last_name',
        ]);
        $lastNameBinding = FormFieldBinding::factory()->forField($lastNameField)
            ->entityOwned('person', 'last_name')
            ->create([
                'merge_strategy' => FormFieldBindingMergeStrategy::Overwrite->value,
                'trust_level' => 60,
            ]);

        $submission = FormSubmission::factory()
            ->forEvent($event)
            ->create([
                'form_schema_id' => $schema->id,
                'subject_type' => 'person',
            ]);

        $submission->schema_snapshot = [
            'fields' => [
                $this->snapshotField($emailField, $emailBinding, 'person', 'email', identityKey: true, trustLevel: 80),
                $this->snapshotField($firstNameField, $firstNameBinding, 'person', 'first_name', trustLevel: 70),
                $this->snapshotField($lastNameField, $lastNameBinding, 'person', 'last_name', trustLevel: 60),
            ],
        ];
        $submission->save();

        $this->writeValue($submission->id, $emailField->id, 'jan@example.nl');
        $this->writeValue($submission->id, $firstNameField->id, 'Jan');
        $this->writeValue($submission->id, $lastNameField->id, 'Jansen');

        return $submission->fresh();
    }

    private function writeValue(string $submissionId, string $fieldId, mixed $value): void
    {
        $row = new FormValue;
        $row->form_submission_id = $submissionId;
        $row->form_field_id = $fieldId;
        $row->setAttribute('value', $value);
        $row->value_anonymised = false;
        $row->save();
    }

    /**
     * @return array<string, mixed>
     */
    private function snapshotField(
        FormField $field,
        FormFieldBinding $binding,
        string $entity,
        string $column,
        bool $identityKey = false,
        int $trustLevel = 50,
    ): array {
        return [
            'id' => (string) $field->id,
            'slug' => (string) $field->slug,
            'sort_order' => (int) $field->sort_order,
            'bindings' => [[
                'id' => (string) $binding->id,
                'mode' => 'entity_owned',
                'entity' => $entity,
                'column' => $column,
                'merge_strategy' => 'overwrite',
                'trust_level' => $trustLevel,
                'is_identity_key' => $identityKey,
            ]],
        ];
    }
}