<?php

namespace Modules\Stylist\Http\Controllers;

use Illuminate\Http\Request;
use Illuminate\Routing\Controller;
use Modules\Stylist\Services\SiteSettingsRepository;
use Modules\Stylist\Services\ThemeAccessibilityValidator;
use Modules\Stylist\Services\ThemeOptimizer;
use Modules\Stylist\Services\ThemePackageManager;
use Modules\Stylist\Services\ThemeSettings;
use Modules\Stylist\Theme\Loader;
use Modules\Stylist\View\ThemeViewResolver;

final class ThemeManagementController extends Controller
{
    public function activate(string $theme, Loader $loader, SiteSettingsRepository $settings)
    {
        $item = $loader->find($theme);
        abort_unless(in_array($item->type(), ['frontend', 'backend'], true), 422, 'Only frontend and backend themes can be activated.');

        $settings->put($item->type().'_theme', $item->key(), 'site', 'string', true);

        return back()->with('status', $item->name().' is now the active '.$item->type().' theme.');
    }

    public function preview(string $theme, Loader $loader, ThemeViewResolver $views)
    {
        $item = $loader->find($theme);

        abort_unless(
            in_array($item->type(), ['frontend', 'backend'], true),
            422,
            'Only frontend and backend themes can be previewed.'
        );

        return view('stylist::preview', [
            'themePreview' => true,
            'previewTheme' => $item,
        ]);
    }

    public function settings(Request $request, string $theme, Loader $loader, ThemeSettings $settings)
    {
        $item = $loader->find($theme);
        $settings->save(
            $item,
            (array) $request->input('settings', []),
            (string) $request->input('variant', 'light'),
            $request->string('appearance')->toString() ?: null,
            $request->string('accent')->toString() ?: null,
        );

        return back()->with('status', 'Theme settings saved.');
    }

    public function install(Request $request, ThemePackageManager $packages)
    {
        $request->validate(['theme' => ['required', 'file', 'mimes:zip', 'max:51200']]);
        $theme = $packages->install($request->file('theme'));

        return back()->with('status', $theme->name().' installed.');
    }

    public function uninstall(string $theme, Loader $loader, ThemePackageManager $packages)
    {
        $item = $loader->find($theme);
        abort_if(in_array($item->key(), ['sonardesk', 'sonardesk-admin'], true), 403, 'Bundled themes cannot be removed.');
        $settings = app(SiteSettingsRepository::class);
        abort_if($settings->get($item->type().'_theme', null, 'site') === $item->key(), 409, 'Deactivate this theme before uninstalling.');
        $packages->uninstall($item);

        return back()->with('status', $item->name().' uninstalled.');
    }

    public function export(string $theme, Loader $loader, ThemePackageManager $packages)
    {
        $item = $loader->find($theme);
        $path = $packages->export($item);

        return response()->download($path)->deleteFileAfterSend();
    }

    public function optimize(string $theme, Loader $loader, ThemeOptimizer $optimizer)
    {
        $item = $loader->find($theme);
        $result = $optimizer->optimize($item);

        return back()->with('status', "Optimised {$result['css']} CSS, {$result['js']} JS and {$result['images']} images.");
    }

    public function validateTheme(string $theme, Loader $loader, ThemeAccessibilityValidator $validator)
    {
        return response()->json(['issues' => $validator->validate($loader->find($theme))]);
    }
}