<?php

namespace App\Jobs\Mail;

use App\Mail\GenericTemplateMail;
use App\Models\Customer;
use App\Models\Mail as MailLog;
use App\Models\MailCampaign;
use App\Models\Notification;
use App\Services\Email\MailCampaignRenderer;
use App\Support\EmailRecipients;
use Illuminate\Bus\Queueable;
use Illuminate\Contracts\Queue\ShouldQueue;
use Illuminate\Foundation\Bus\Dispatchable;
use Illuminate\Queue\InteractsWithQueue;
use Illuminate\Queue\SerializesModels;
use Illuminate\Support\Arr;
use Illuminate\Support\Facades\DB;
use Illuminate\Support\Facades\Log;
use Illuminate\Support\Facades\Mail;

class SendMailCampaignRecipient implements ShouldQueue
{
    use Dispatchable, InteractsWithQueue, Queueable, SerializesModels;

    public function __construct(
        private readonly int $campaignId,
        private readonly ?int $customerId,
        private readonly string $email,
    ) {}

    public function handle(MailCampaignRenderer $renderer): void
    {
        $campaign = MailCampaign::with('template')->find($this->campaignId);
        if (!$campaign) {
            return;
        }

        $customer = $this->customerId ? Customer::find($this->customerId) : null;
        if ($customer && $campaign->isMarketing() && !$customer->acceptsMarketingEmail()) {
            $this->markDone($campaign, true);

            return;
        }

        $rendered = $renderer->render($campaign, $renderer->recipientValues($campaign, $customer, $this->email));
        $cc = EmailRecipients::parse($campaign->cc);
        $bcc = EmailRecipients::parse($campaign->bcc);
        $mailConfig = Arr::only($campaign->template?->mailConfig() ?? [], ['from_email', 'from_name', 'reply_to', 'reply_to_name']);

        $failed = false;
        try {
            $mailer = Mail::to($this->email);
            if ($cc) {
                $mailer->cc($cc);
            }
            if ($bcc) {
                $mailer->bcc($bcc);
            }
            $failed = $mailer->send(new GenericTemplateMail(
                $rendered['subject'],
                $rendered['html'],
                $mailConfig,
            )) === null;
        } catch (\Throwable $e) {
            $failed = true;
            Log::warning('Gửi email chiến dịch thất bại', [
                'campaign_id' => $campaign->id,
                'to'          => $this->email,
                'error'       => $e->getMessage(),
            ]);
        }

        MailLog::create([
            'campaign_id'  => $campaign->id,
            'template_id'  => $campaign->template_id ?? 0,
            'subject'      => $rendered['subject'],
            'from_address' => $mailConfig['from_email'] ?? config('mail.from.address'),
            'to'           => $this->email,
            'cc'           => implode(', ', $cc),
            'bcc'          => implode(', ', $bcc),
            'customer_id'  => $customer?->id,
            'sent_by'      => $campaign->created_by,
            'message'      => $rendered['html'],
            'status'       => $failed ? 'failed' : 'sent',
        ]);

        $this->markDone($campaign, $failed);
    }

    private function markDone(MailCampaign $campaign, bool $failed): void
    {
        $campaign->increment($failed ? 'failed_count' : 'sent_count');

        $finished = MailCampaign::whereKey($campaign->id)
            ->whereIn('status', ['queued', 'sending'])
            ->whereRaw('sent_count + failed_count >= total_recipients')
            ->update([
                'status'       => DB::raw("CASE WHEN sent_count = 0 THEN 'failed' ELSE 'completed' END"),
                'completed_at' => now(),
            ]);

        if ($finished && $campaign->created_by) {
            $campaign->refresh();
            Notification::create([
                'recipient_type' => 'admin',
                'recipient_id'   => $campaign->created_by,
                'type'           => 'mail_campaign_completed',
                'title'          => $campaign->status === 'failed' ? 'Gửi email thất bại' : 'Đã gửi email thành công',
                'body'           => "{$campaign->name}: {$campaign->sent_count}/{$campaign->total_recipients} email đã gửi"
                    . ($campaign->failed_count ? ", {$campaign->failed_count} lỗi." : '.'),
                'link'           => "/mail-campaigns/{$campaign->uuid}",
                'data'           => ['campaign_uuid' => $campaign->uuid],
            ]);
        }
    }
}