<?php

namespace Modules\Settings\Http\Controllers;

use App\Http\Controllers\Controller;
use Illuminate\Http\RedirectResponse;
use Illuminate\Http\Request;
use Illuminate\Validation\Rule;
use Illuminate\View\View;
use Modules\Settings\Services\SettingsRepository;
use Modules\Stylist\Theme\Loader;

final class SettingController extends Controller
{
    public function index(SettingsRepository $settings, Loader $themes): View
    {
        return view('settings::index', [
            'values' => $settings->site(),
            'sections' => $this->sections($themes),
        ]);
    }

    public function update(Request $request, SettingsRepository $settings, Loader $themes): RedirectResponse
    {
        $rules = [];
        foreach ($this->sections($themes) as $fields) {
            foreach ($fields as $key => $definition) {
                $rules["settings.$key"] = $definition['rules'];
            }
        }

        $validated = $request->validate($rules);
        foreach ($validated['settings'] ?? [] as $key => $value) {
            $settings->put($key, $value, 'site', 'string', true);
        }

        return back()->with('status', 'Site settings saved. The active frontend and backend themes have been updated.');
    }

    /** @return array<string, array<string, array<string, mixed>>> */
    private function sections(Loader $themes): array
    {
        $text = ['type' => 'text', 'rules' => ['nullable', 'string', 'max:255']];
        $url = ['type' => 'text', 'rules' => ['nullable', 'string', 'max:2048'], 'placeholder' => '/path or https://example.com'];
        $textarea = ['type' => 'textarea', 'rules' => ['nullable', 'string', 'max:5000']];

        $backendThemes = $themes->all()
            ->filter(fn ($theme): bool => $theme->type() === 'backend')
            ->mapWithKeys(fn ($theme): array => [$theme->key() => $theme->name()])
            ->all();

        $frontendThemes = $themes->all()
            ->filter(fn ($theme): bool => $theme->type() === 'frontend')
            ->mapWithKeys(fn ($theme): array => [$theme->key() => $theme->name()])
            ->all();

        return [
            'Themes' => [
                'backend_theme' => [
                    'type' => 'select',
                    'rules' => ['required', 'string', Rule::in(array_keys($backendThemes))],
                    'label' => 'Backend theme',
                    'help' => 'Used for the authenticated administration area.',
                    'options' => $backendThemes,
                ],
                'frontend_theme' => [
                    'type' => 'select',
                    'rules' => ['required', 'string', Rule::in(array_keys($frontendThemes))],
                    'label' => 'Frontend theme',
                    'help' => 'Used for the public website.',
                    'options' => $frontendThemes,
                ],
            ],
            'General' => [
                'site_name' => $text + ['label' => 'Site name', 'help' => 'Used in the header, footer, browser titles and metadata.'],
                'tagline' => $text + ['label' => 'Tagline'],
                'site_description' => $textarea + ['label' => 'Site description'],
                'company_name' => $text + ['label' => 'Legal company name'],
                'site_url' => $url + ['label' => 'Canonical site URL'],
                'copyright' => $text + ['label' => 'Copyright text', 'help' => 'Leave blank to generate it automatically.'],
            ],
            'Branding' => [
                'logo_url' => $url + ['label' => 'Primary logo'],
                'logo_dark_url' => $url + ['label' => 'Dark-mode logo'],
                'favicon_url' => $url + ['label' => 'Favicon'],
            ],
            'Contact' => [
                'contact_email' => ['type' => 'email', 'rules' => ['nullable', 'email', 'max:255'], 'label' => 'Public email'],
                'contact_phone' => $text + ['label' => 'Public telephone'],
                'address' => $textarea + ['label' => 'Address'],
            ],
            'Social' => [
                'facebook_url' => $url + ['label' => 'Facebook'],
                'x_url' => $url + ['label' => 'X / Twitter'],
                'linkedin_url' => $url + ['label' => 'LinkedIn'],
                'instagram_url' => $url + ['label' => 'Instagram'],
            ],
            'Account navigation' => [
                'dashboard_label' => $text + ['label' => 'Dashboard label'],
                'login_label' => $text + ['label' => 'Login label'],
                'registration_label' => $text + ['label' => 'Registration label'],
            ],
            'SEO defaults' => [
                'default_meta_title' => $text + ['label' => 'Default meta title', 'help' => 'Leave blank to use the site name.'],
                'default_meta_description' => $textarea + ['label' => 'Default meta description', 'help' => 'Leave blank to use the site description.'],
            ],
        ];
    }
}