<?php

namespace Modules\Stylist\Services;

use Illuminate\Filesystem\Filesystem;
use Modules\Stylist\Theme\Loader;
use Modules\Stylist\Theme\Theme;

final class ThemeValidator
{
    public function __construct(
        private readonly Filesystem $files,
        private readonly Loader $loader,
        private readonly ThemeAccessibilityValidator $accessibility,
    ) {}

    /** @return array<int, array{severity:string,message:string,file:string}> */
    public function validatePath(string $path): array
    {
        $theme = $this->loader->fromPath($path);

        return $this->validate($theme);
    }

    /** @return array<int, array{severity:string,message:string,file:string}> */
    public function validate(Theme $theme): array
    {
        $issues = [];
        $entryView = 'views/'.str_replace('.', '/', $theme->entryView()).'.blade.php';

        if (! $theme->has($entryView)) {
            $issues[] = [
                'severity' => 'error',
                'message' => "Entry view [{$theme->entryView()}] was not found.",
                'file' => $entryView,
            ];
        }

        foreach (['stylesheet' => $theme->stylesheet(), 'script' => $theme->script()] as $label => $relativePath) {
            if ($relativePath !== '' && ! $theme->has($relativePath)) {
                $issues[] = [
                    'severity' => 'error',
                    'message' => ucfirst($label)." file [{$relativePath}] was not found.",
                    'file' => $relativePath,
                ];
            }
        }

        $preview = $theme->preview();
        if ($preview !== null && ! $theme->has($preview)) {
            $issues[] = [
                'severity' => 'warning',
                'message' => "Preview file [{$preview}] was not found.",
                'file' => $preview,
            ];
        }

        foreach ((array) ($theme->meta()['assets'] ?? []) as $asset) {
            if (! is_string($asset) || $asset === '') {
                continue;
            }

            if (! $theme->has($asset)) {
                $issues[] = [
                    'severity' => 'warning',
                    'message' => "Declared asset [{$asset}] was not found.",
                    'file' => $asset,
                ];
            }
        }

        return array_merge($issues, $this->accessibility->validate($theme));
    }
}