<?php

namespace App\Console\Commands;

use App\Services\PlatformOverrides;
use Illuminate\Console\Command;
use Illuminate\Support\Facades\File;

/**
 * Copy a template from the code into the platform folder to change it there. The copy starts with a Blade
 * comment holding the original's sha1, so platform:check can tell when the original changes later.
 *
 *   php artisan platform:override emails.layouts.html            an app view
 *   php artisan platform:override mail::html.panel               a mail component (header, footer, button, ...)
 *   php artisan platform:override wirechat::components.divider   a package view
 */
class PlatformOverride extends Command
{
    protected $signature = 'platform:override {view : View name, e.g. emails.layouts.html, mail::html.panel or wirechat::components.divider}
                            {--force : Replace an existing copy (e.g. after the original changed)}';

    protected $description = 'Copy a template into the platform folder, with a fingerprint of its original';

    public function handle(PlatformOverrides $overrides): int
    {
        $view = (string) $this->argument('view');
        $namespace = str_contains($view, '::') ? strstr($view, '::', true) : null;
        $name = str_replace('.', '/', $namespace ? substr($view, strlen($namespace) + 2) : $view) . '.blade.php';
        $relative = match ($namespace) {
            null => $name,
            'mail' => "mail/{$name}",
            default => "vendor/{$namespace}/{$name}",
        };

        $original = $overrides->originalOf($relative);
        if ($original === null) {
            $this->error("No template {$view} in the code.");

            return self::FAILURE;
        }

        $target = platform_path("views/{$relative}");
        if (is_file($target) && !$this->option('force')) {
            $this->error("platform/views/{$relative} exists already. Use --force to replace it (your changes in it are lost).");

            return self::FAILURE;
        }

        File::ensureDirectoryExists(dirname($target));
        File::put($target, '{{-- platform:override of ' . $overrides->shown($original) . ' sha1:' . sha1_file($original) . " --}}\n" . File::get($original));
        $this->info("Copied {$overrides->shown($original)} to platform/views/{$relative}. Change it there; php artisan view:clear afterwards.");

        return self::SUCCESS;
    }
}