<?php

namespace App\Mail;

use App\Models\Mailing;
use Illuminate\Bus\Queueable;
use Illuminate\Mail\Mailable;
use Illuminate\Queue\SerializesModels;

class MailingSummaryMail extends Mailable
{
    use Queueable, SerializesModels;

    public Mailing $mailing;

    public function __construct(Mailing $mailing)
    {
        $this->mailing = $mailing;
    }

    public function build(): self
    {
        $mailing = $this->mailing;

        $subject = '[' . config('app.name') . '] Mailing completed: ' . $mailing->title;

        $durationStr = '';
        if ($mailing->sending_started_at && $mailing->sent_at) {
            $seconds = (int) $mailing->sending_started_at->diffInSeconds($mailing->sent_at, true);
            $h = intdiv($seconds, 3600);
            $m = intdiv($seconds % 3600, 60);
            $s = $seconds % 60;
            $durationStr = $h > 0
                ? sprintf('%dh %dm %ds', $h, $m, $s)
                : ($m > 0 ? sprintf('%dm %ds', $m, $s) : sprintf('%ds', $s));
        }

        $successRate  = ($mailing->recipients_count > 0)
            ? round($mailing->sent_count / $mailing->recipients_count * 100, 1)
            : 0;

        $bounceStats         = $mailing->getBounceStats();
        $suppressedCount     = $mailing->getSuppressedRecipientsCount();

        $lines = [];
        $lines[] = 'Mailing Report: ' . $mailing->title;
        $lines[] = str_repeat('-', 40);
        $lines[] = '';
        $lines[] = 'Mailing ID:          ' . $mailing->id;
        $lines[] = 'Status:              ' . ucfirst($mailing->status);
        if ($mailing->sending_started_at) {
            $lines[] = 'Started sending:     ' . $mailing->sending_started_at->format('d M Y H:i');
        }
        if ($mailing->sent_at) {
            $lines[] = 'Completed at:        ' . $mailing->sent_at->format('d M Y H:i');
        }
        if ($durationStr) {
            $lines[] = 'Duration:            ' . $durationStr;
        }
        $lines[] = '';
        $lines[] = 'Total sent to:       ' . number_format($mailing->recipients_count);
        $lines[] = 'Successfully sent:   ' . number_format($mailing->sent_count);
        $lines[] = 'Failed (delivery):   ' . number_format($mailing->failed_count);
        if ($mailing->skipped_count > 0) {
            $lines[] = 'Skipped (bounced):   ' . number_format($mailing->skipped_count);
        }
        if ($suppressedCount > 0) {
            $lines[] = 'Skipped (hard bounce): ' . number_format($suppressedCount);
        }
        if ($mailing->aborted_count > 0) {
            $lines[] = 'Not sent (aborted):  ' . number_format($mailing->aborted_count);
        }
        if ($bounceStats['hard'] > 0) {
            $lines[] = 'Bounced (hard):      ' . number_format($bounceStats['hard']);
        }
        if ($bounceStats['soft'] > 0) {
            $lines[] = 'Bounced (soft):      ' . number_format($bounceStats['soft']);
        }
        if ($bounceStats['complaint'] > 0) {
            $lines[] = 'Complaints:          ' . number_format($bounceStats['complaint']);
        }
        $lines[] = 'Success rate:        ' . $successRate . '%';
        $lines[] = '';
        $lines[] = str_repeat('-', 40);
        $lines[] = config('app.name');

        return $this->subject($subject)->text('emails.mailing-summary-plain', [
            'lines' => $lines,
        ]);
    }
}