<?php

namespace App\Mail;

use App\Models\PackagePurchase;
use Illuminate\Bus\Queueable;
use Illuminate\Mail\Mailable;
use Illuminate\Mail\Mailables\Content;
use Illuminate\Mail\Mailables\Envelope;
use Illuminate\Queue\SerializesModels;

class PurchaseConfirmation extends Mailable
{
    use Queueable, SerializesModels;

    public function __construct(public PackagePurchase $purchase)
    {
        //
    }

    public function envelope(): Envelope
    {
        return new Envelope(
            subject: __('emails.purchase.subject', ['package' => $this->localizedPackageName()]),
        );
    }

    public function content(): Content
    {
        return new Content(
            view: 'emails.purchase',
            with: [
                'purchase' => $this->purchase,
                'user' => $this->purchase->tenant->user,
                'package' => $this->purchase->package,
                'packageName' => $this->localizedPackageName(),
                'priceFormatted' => $this->formattedTotal(),
            ],
        );
    }

    public function attachments(): array
    {
        return [];
    }

    private function localizedPackageName(): string
    {
        $locale = $this->locale ?? app()->getLocale();

        return optional($this->purchase->package)->getNameForLocale($locale) ?? '';
    }

    private function formattedTotal(): string
    {
        $totals = $this->purchase->metadata['paddle_totals'] ?? [];
        $currency = $totals['currency']
            ?? $this->purchase->metadata['currency']
            ?? $this->purchase->package?->currency
            ?? 'EUR';
        $amount = array_key_exists('total', $totals) ? (float) $totals['total'] : (float) $this->purchase->price;

        $locale = $this->locale ?? app()->getLocale();
        $formatter = class_exists(\NumberFormatter::class)
            ? new \NumberFormatter($this->mapLocale($locale), \NumberFormatter::CURRENCY)
            : null;

        if ($formatter) {
            $formatted = $formatter->formatCurrency($amount, $currency);
            if ($formatted !== false) {
                return $formatted;
            }
        }

        $symbol = match ($currency) {
            'EUR' => '€',
            'USD' => '$',
            default => $currency,
        };

        return number_format($amount, 2, ',', '.').' '.$symbol;
    }

    private function mapLocale(string $locale): string
    {
        $normalized = strtolower(str_replace('_', '-', $locale));

        return match (true) {
            str_starts_with($normalized, 'de') => 'de_DE',
            str_starts_with($normalized, 'en') => 'en_US',
            default => 'de_DE',
        };
    }
}