<?php

namespace App\Mail;

use App\Models\EmailNotificationTemplate;
use App\Models\Invoice;
use App\Services\EmailNotificationTemplateRenderer;
use Illuminate\Database\Eloquent\Collection;
use Illuminate\Mail\Mailable;
use Illuminate\Mail\Mailables\Attachment;
use Illuminate\Mail\Mailables\Content;
use Illuminate\Mail\Mailables\Envelope;
use Illuminate\Support\Facades\Log;

/**
 * KHÔNG implement ShouldQueue — gọi từ trong queued job, gửi đồng bộ.
 */
class InvoiceNotificationMail extends Mailable
{
    public function __construct(
        public readonly Invoice $invoice,
        public readonly Collection $invoiceAttachments,
        public readonly string $customerName,
        public readonly string $message,
        public readonly string $companyName,
        public readonly string $type = 'invoice',
        public readonly ?string $invoicePdf = null,
        public readonly ?string $invoicePdfFileName = null,
        public readonly ?string $paymentUrl = null,
    ) {}

    public function envelope(): Envelope
    {
        $tpl     = $this->activeTemplate();
        $fallbackSubject = $this->type === 'renewal'
            ? "Thông báo gia hạn cước #{$this->invoice->invoice_number} - {$this->companyName}"
            : "Thông báo hóa đơn #{$this->invoice->invoice_number} - {$this->companyName}";

        $subject = $tpl
            ? $this->resolveSubject($tpl->subject)
            : $fallbackSubject;

        return new Envelope(subject: $subject);
    }

    public function content(): Content
    {
        $tpl = $this->activeTemplate();

        if ($tpl) {
            try {
                $renderer = app(EmailNotificationTemplateRenderer::class);
                $html     = $renderer->render(
                    $tpl,
                    $this->invoice->load(['order.orderItems.product', 'customer', 'attachments']),
                    $this->companyName
                );
                return new Content(htmlString: $html);
            } catch (\Throwable $e) {
                Log::warning('InvoiceNotificationMail: renderer failed, falling back to blade', [
                    'template_id' => $tpl->id,
                    'error'       => $e->getMessage(),
                ]);
            }
        }

        return new Content(
            view: 'emails.invoice-notification',
            with: [
                'invoice'      => $this->invoice,
                'attachments'  => $this->invoiceAttachments,
                'customerName' => $this->customerName,
                'bodyMessage'  => $this->message,
                'companyName'  => $this->companyName,
                'type'         => $this->type,
                'paymentUrl'   => $this->paymentUrl,
            ]
        );
    }

    public function attachments(): array
    {
        if ($this->invoicePdf !== null && $this->invoicePdfFileName !== null) {
            return [
                Attachment::fromData(fn() => $this->invoicePdf, $this->invoicePdfFileName)
                    ->withMime('application/pdf'),
            ];
        }

        return [];
    }

    private function activeTemplate(): ?EmailNotificationTemplate
    {
        return EmailNotificationTemplate::where('type', 'invoice_notification')
            ->where('is_active', true)
            ->first();
    }

    private function resolveSubject(string $subject): string
    {
        return str_replace(
            ['{{invoice_number}}', '{{company_name}}'],
            [$this->invoice->invoice_number ?? '', $this->companyName],
            $subject
        );
    }
}