<?php

declare(strict_types=1);

namespace App\FormBuilder\Bindings;

use App\Enums\FormBuilder\ApplyStatus;

/**
 * RFC-WS-6 §3 (Q4) — aggregate result of one
 * {@see \App\Services\FormBuilder\FormBindingApplicator} pass over a
 * submission. `applyStatus()` is the canonical mapping consumed by
 * `form_submissions.apply_status`.
 */
final readonly class BindingPassResult
{
    /**
     * @param  list<BindingApplicationResult>  $applications
     */
    public function __construct(
        public string $formSubmissionId,
        public ?string $provisionedSubjectType,
        public ?string $provisionedSubjectId,
        public array $applications,
    ) {}

    public function applyStatus(): ApplyStatus
    {
        if ($this->applications === []) {
            return ApplyStatus::COMPLETED;
        }

        $successes = $this->successCount();
        $failures = $this->failureCount();

        if ($failures === 0) {
            return ApplyStatus::COMPLETED;
        }
        if ($successes === 0) {
            return ApplyStatus::FAILED;
        }

        return ApplyStatus::PARTIAL;
    }

    public function successCount(): int
    {
        return count(array_filter($this->applications, fn (BindingApplicationResult $r): bool => $r->success));
    }

    public function failureCount(): int
    {
        return count(array_filter($this->applications, fn (BindingApplicationResult $r): bool => ! $r->success));
    }

    /**
     * @return list<BindingApplicationResult>
     */
    public function failures(): array
    {
        return array_values(array_filter(
            $this->applications,
            fn (BindingApplicationResult $r): bool => ! $r->success,
        ));
    }
}