<?php

namespace App\Http\Controllers\Fo;

use App\Http\Controllers\Controller;
use App\Models\OpInsta\InstaMedia;
use Illuminate\Support\Carbon;
use Illuminate\Support\Facades\Cache;
use Illuminate\Support\Facades\Validator;
use Illuminate\Validation\ValidationException;
use Illuminate\View\View;

class OpInstaController extends Controller
{
    /**
     * Show OpInsta page
     *
     * @return \Illuminate\View\View
     */
    public function index(): View
    {
        $this->assertConfigIsValid();
        $has_started = $this->hasStarted();

        $instaMediaList = InstaMedia::query()->orderBy('id')->get()
            ->map(function (InstaMedia $media) {
                $path = \explode('/', \rtrim(\parse_url(
                    $media->permalink,
                    \PHP_URL_PATH
                ), '/'));

                $media->pictures = $this->fetchPicture(\collect($path)->last());
                return $media;
            });

        return \view('front.opinsta.index', \compact('instaMediaList', 'has_started'));
    }


    /**
     * Assert config is valid
     *
     * @return void
     * @throws \ErrorException If config is invalid.
     */
    private function assertConfigIsValid(): void
    {
        try {
            $start = config('opinsta.start');
            $end   = config('opinsta.end');

            Validator::validate([
                'start' => $start,
                'end' => $end,
            ], [
                'start' => 'date_format:d-m-Y|before:end',
                'end' => 'date_format:d-m-Y|after:start',
            ]);
        } catch (ValidationException $e) {
            $message = \collect($e->errors())->map(function ($el) {
                return \collect($el)->implode(', ');
            })->implode(', ');
            throw new \ErrorException("Op install config is invalid, {$message}");
        }
    }

    /**
     * Le jeu a démaré ?
     *
     * Démarre à la date de départ (0h00) et s'arrête à la date de fin (23h59)
     *
     * @return boolean
     */
    private function hasStarted(): bool
    {
        $start = Carbon::createFromFormat('d-m-Y', config('opinsta.start'), 'Europe/Paris')->setTime(0, 0);
        $end   = Carbon::createFromFormat('d-m-Y', config('opinsta.end'), 'Europe/Paris')->setTime(0, 0);
        $now   = Carbon::now('Europe/Paris')->setTime(0, 0);
        return $now->isBetween($start, $end);
    }

    /**
     * Fetch Media Picture Object
     *
     * @param string $ig_media_hash
     * @return array<integer,string[]>
     */
    private function fetchPicture(string $ig_media_hash): array
    {
        return Cache::remember(
            "media_picture_ajax_fetch{$ig_media_hash}",
            // * 3H cache
            3 * 60 * 60,
            function () use ($ig_media_hash) {
                return InstaMedia::fetchInstagramMediaPictures($ig_media_hash);
            }
        );
    }
}