Completed
Push — master ( 947cff...af97d0 )
by Nikola
04:03
created

SimpleMailer::buildMessage()   A

Complexity

Conditions 1
Paths 1

Size

Total Lines 4

Duplication

Lines 0
Ratio 0 %

Code Coverage

Tests 2
CRAP Score 1

Importance

Changes 0
Metric Value
dl 0
loc 4
c 0
b 0
f 0
ccs 2
cts 2
cp 1
rs 10
cc 1
nc 1
nop 0
crap 1
1
<?php
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declare(strict_types=1);
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namespace Notifier\Channel\Email;
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use ErrorException;
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use Notifier\Channel\Exception\SendingMessageFailed;
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final class SimpleMailer implements Mailer
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{
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    private const MESSAGE_LINE_CHARACTERS_LIMIT = 70;
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    /** @var callable|null */
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    private $handler;
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    /** @var EmailMessage */
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    private $message;
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    public function __construct(callable $handler = null)
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    {
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        $this->handler = $handler;
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    }
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    public function send(EmailMessage $message): void
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    {
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        $this->message = $message;
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        $status = call_user_func(
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            $this->handler ?? 'mail',
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            $this->buildTo(),
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            $this->buildSubject(),
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            $this->buildMessage(),
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            $this->buildHeaders()
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        );
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        if (!$status) {
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            $error = error_get_last();
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            throw SendingMessageFailed::dueTo(new ErrorException($error['message'] ?? 'Email has not been accepted for delivery'));
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        }
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    }
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    private function buildTo(): string
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    {
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        return implode(', ', $this->message->getTo());
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    }
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    private function buildSubject(): string
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    {
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        return $this->message->getSubject();
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    }
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    private function buildMessage(): string
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    {
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        return wordwrap($this->message->getBody(), self::MESSAGE_LINE_CHARACTERS_LIMIT);
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    }
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    private function buildHeaders(): string
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    {
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        $headers = array_map(function (string $name, $value) {
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            if (is_array($value)) {
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                $value = implode(', ', $value);
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            }
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            return "$name: $value";
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        }, array_keys($this->message->getHeaders()), $this->message->getHeaders());
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        return implode("\r\n", $headers);
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    }
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}
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