<?php

namespace App\Services;

use Spatie\YamlFrontMatter\YamlFrontMatter;

/**
 * Site-wide, marketing-editable settings from Stoic's `settings` singleton
 * (resources/stoic/content/{locale}/settings.md). Read directly rather than
 * through a Paper model: Paper models map to a folder of entries, and this is
 * one file per locale. Legal and transactional details (address, ΑΦΜ, phone)
 * live in boboko-core's StoreDetails instead.
 *
 * Stoic writes every field to the default locale's file and only the
 * translatable ones (e.g. meta_description) to the others, so the current
 * locale's file is layered over the default one; empty values fall through.
 *
 * Bound as scoped in AppServiceProvider, so files are parsed at most once per
 * locale per request (or queued job) and edits in Stoic show up on the next one.
 * The locale is read per call, not at construction, so a mail rendered with
 * ->locale() still gets its own locale's values.
 */
class StoicSettings
{
    private const SOCIALS = [
        'facebook' => 'Facebook',
        'instagram' => 'Instagram',
        'tiktok' => 'TikTok',
    ];

    /** @var array<string, array<string, mixed>> keyed by locale */
    private array $data = [];

    public function get(string $key, mixed $default = null): mixed
    {
        $value = $this->data()[$key] ?? null;

        return filled($value) ? $value : $default;
    }

    /**
     * Absolute og:image URL for a Stoic image field value (the page's own, else
     * the default from settings.md), or null. Image fields store a
     * comma-separated list; only the first is used.
     */
    public function ogImageUrl(?string $pageImage = null): ?string
    {
        $filename = trim(explode(',', $pageImage ?: (string) $this->get('og_image', ''))[0]);

        return $filename === '' ? null : url(Stoic::image($filename, 'large'));
    }

    /**
     * Only the networks that have a URL set, in display order.
     *
     * @return list<array{icon: string, label: string, url: string}>
     */
    public function socialLinks(): array
    {
        $links = [];

        foreach (self::SOCIALS as $icon => $label) {
            if ($url = $this->get("{$icon}_url")) {
                $links[] = ['icon' => $icon, 'label' => $label, 'url' => $url];
            }
        }

        return $links;
    }

    private function data(): array
    {
        $locale = app()->getLocale();

        return $this->data[$locale] ??= $this->load();
    }

    private function load(): array
    {
        $default = Stoic::defaultLocale();

        if ($default === null) {
            return $this->parse(resource_path('stoic/content/settings.md'));
        }

        return array_merge(
            $this->parse(resource_path("stoic/content/{$default}/settings.md")),
            Stoic::localeOverrides('settings.md'),
        );
    }

    private function parse(string $path): array
    {
        return is_file($path) ? YamlFrontMatter::parse(file_get_contents($path))->matter() : [];
    }
}