<?php

namespace App\Console\Commands;

use App\Models\Filament;
use App\Models\FilamentPrice;
use App\Models\User;
use Illuminate\Console\Attributes\Description;
use Illuminate\Console\Attributes\Signature;
use Illuminate\Console\Command;
use Illuminate\Support\Facades\Http;
use Illuminate\Support\Facades\Mail;
use Throwable;

#[Signature('filaments:refresh')]
#[Description('Collect current Amazon prices for tracked filament')]
class RefreshFilamentPrices extends Command
{
    public function handle(): int
    {
        $drops = [];
        foreach (Filament::cursor() as $filament) {
            $host = strtolower((string) parse_url($filament->amazonUrl, PHP_URL_HOST));
            if (! in_array($host, ['amazon.co.uk', 'www.amazon.co.uk', 'amazon.com', 'www.amazon.com'], true)) {
                $this->warn($filament->filamentName.': unsupported product host');

                continue;
            }
            try {
                $html = Http::timeout(15)->withHeaders(['User-Agent' => 'Mozilla/5.0 HickLab3D/1.0'])
                    ->get($filament->amazonUrl)->throw()->body();
                if (! preg_match('/class="[^"]*a-price-whole[^"]*"[^>]*>([0-9,.]+)/', $html, $whole)
                    || ! preg_match('/class="[^"]*a-price-fraction[^"]*"[^>]*>([0-9]{2})/', $html, $fraction)) {
                    $this->warn($filament->filamentName.': price unavailable');

                    continue;
                }
                $price = (float) (str_replace(',', '', $whole[1]).'.'.$fraction[1]);
                if ($price <= 0) {
                    continue;
                }
                preg_match('/class="[^"]*savingsPercentage[^"]*"[^>]*>[^0-9]*([0-9]+)%/', $html, $discount);
                $previous = FilamentPrice::where('filamentId', $filament->id)->orderByDesc('recordedAt')->orderByDesc('id')->first();
                FilamentPrice::create([
                    'filamentId' => $filament->id,
                    'price' => $price,
                    'currentDiscount' => ['discount' => ['value' => (int) ($discount[1] ?? 0), 'type' => 'percentage'], 'voucher' => ['value' => 0, 'type' => 'none']],
                ]);
                if ($previous && $price < (float) $previous->price) {
                    $drops[] = $filament->filamentName.': £'.number_format((float) $previous->price, 2).' → £'.number_format($price, 2).' ('.$filament->amazonUrl.')';
                }
                $this->line($filament->filamentName.': £'.number_format($price, 2));
            } catch (Throwable $exception) {
                report($exception);
                $this->warn($filament->filamentName.': collection failed');
            }
        }
        if ($drops) {
            $body = "HickLab3D filament price drops\n\n".implode("\n", $drops);
            foreach (User::where('alertEmails', true)->where('disabled', false)->pluck('email') as $email) {
                Mail::raw($body, fn ($message) => $message->to($email)->subject('HickLab3D filament price drops'));
            }
        }

        return self::SUCCESS;
    }
}