<?php

declare(strict_types=1);

namespace App\Observers\FormBuilder;

use App\Models\Event;
use App\Models\FormBuilder\FormSubmission;
use App\Models\Scopes\OrganisationScope;

/**
 * Populates the denormalized organisation_id and event_id columns on
 * form_submissions per ARCH-CONSOLIDATION-ADDENDUM-2026-04-24.md Q2.
 *
 * organisation_id resolves from the parent schema (always present —
 * form_schemas carries the tenant column directly). event_id resolves
 * to the schema owner when owner_type === 'event'; otherwise it falls
 * back to the active route's {event} parameter (for submissions created
 * inside an events/{event}/... route, e.g. the portal flow). Purposes
 * like user_profile or signature_contract that have neither an
 * event-owned schema nor an event-scoped route produce event_id = null,
 * which is valid per migration 2026_04_24_200000.
 */
final class FormSubmissionObserver
{
    public function creating(FormSubmission $submission): void
    {
        if ($submission->organisation_id === null) {
            $submission->organisation_id = $this->resolveOrganisationId($submission);
        }

        if ($submission->event_id === null) {
            $submission->event_id = $this->resolveEventId($submission);
        }
    }

    private function resolveOrganisationId(FormSubmission $submission): ?string
    {
        if ($submission->form_schema_id === null) {
            return null;
        }

        $schema = $submission->relationLoaded('schema')
            ? $submission->getRelation('schema')
            : \App\Models\FormBuilder\FormSchema::query()
                ->withoutGlobalScope(OrganisationScope::class)
                ->find($submission->form_schema_id);

        return $schema?->organisation_id;
    }

    private function resolveEventId(FormSubmission $submission): ?string
    {
        $schema = $submission->relationLoaded('schema')
            ? $submission->getRelation('schema')
            : \App\Models\FormBuilder\FormSchema::query()
                ->withoutGlobalScope(OrganisationScope::class)
                ->find($submission->form_schema_id);

        if ($schema !== null && $schema->owner_type === 'event' && $schema->owner_id !== null) {
            return (string) $schema->owner_id;
        }

        // Fall back to the active route — portal + organizer flows that
        // scope submissions by the current event via /events/{event}/...
        $route = request()?->route();
        if ($route === null) {
            return null;
        }

        $eventParam = $route->parameter('event');
        if ($eventParam instanceof Event) {
            return (string) $eventParam->id;
        }
        if (is_string($eventParam) && $eventParam !== '') {
            return $eventParam;
        }

        return null;
    }
}