<?php

namespace App\Http\Controllers;

use Illuminate\Http\Request;
use Illuminate\Support\Str;
use Illuminate\Support\Facades\DB;

class CalendarSettingsController extends Controller
{
    /* landing page – list of settings choices */
    public function index()
    {
        return $this->frame('calendar.settings.subscribe');
    }

    /* show “Subscribe to a calendar” form */
    public function subscribeForm()
    {
        return $this->frame(
            'calendar.settings.subscribe',
            [
                'title' => 'Subscribe to a calendar',
                'sub'   => 'Add an `.ics` calender from another service'
            ]);
    }

    /* handle POST from the subscribe form */
    public function subscribeStore(Request $request)
    {
        $data = $request->validate([
            'source' => ['required', 'url'],
            'displayname' => ['nullable', 'string', 'max:100'],
            'color' => ['nullable', 'regex:/^#[0-9A-F]{6}$/i'],
        ]);

        DB::table('calendarsubscriptions')->insert([
            'uri'           => Str::uuid(),                        // local id
            'principaluri'  => 'principals/'.$request->user()->email,
            'source'        => $data['source'],
            'displayname'   => $data['displayname'] ?: $data['source'],
            'calendarcolor' => $data['color'],
            'refreshrate'   => 'P1D',                              // daily
            'lastmodified'  => now()->timestamp,
        ]);

        return redirect()
            ->route('calendar.settings')
            ->with('toast', __('Subscription added successfully!'));
    }

    /**
     * content frame handler
     */
    private function frame(?string $view = null, array $data = [])
    {
        return view('calendar.settings.index', [
            'view'  => $view,
            'data'  => $data,
        ]);
    }
}