<?php

use GuzzleHttp\Client as HttpClient;
use Illuminate\Mail\Message;
use Illuminate\Support\Arr;
use Sichikawa\LaravelSendgridDriver\Transport\SendgridTransport;

class SendgridTransportTest extends TestCase
{
    /**
     * @var SendgridTransport
     */
    protected $transport;

    protected function setUp()
    {
        parent::setUp();
        $client = new HttpClient();
        $this->transport = new SendgridTransport($client, $this->api_key);
    }


    public function testSend()
    {
        $message = new Message($this->getMessage());
        $message->from('from@google.com', 'test_from')
            ->to('to@sink.sendgrid.net', 'test_to');
        $res = $this->transport->send($message->getSwiftMessage());
        $this->assertEquals(1, $res);
    }

    public function testXMessageID()
    {
        $client = $this->getMockBuilder(\GuzzleHttp\Client::class)
            ->setMethods(['post'])
            ->getMock();
        $transport = new SendgridTransport($client, $this->api_key);

        $messageId = str_random(32);
        $client->expects($this->once())
            ->method('post')
            ->willReturn(new \GuzzleHttp\Psr7\Response(200, [
                'X-Message-ID' => $messageId
            ]));
        $message = new Message($this->getMessage());
        $message->from('from@google.com', 'test_from')
            ->to('to@sink.sendgrid.net', 'test_to');
        $transport->send($message->getSwiftMessage());
        $this->assertEquals($messageId, $message->getSwiftMessage()->getHeaders()->get('X-Message-ID')->getFieldBody());
    }

    public function testMultipleSend()
    {
        $message = new Message($this->getMessage());
        $message->from('from@google.com', 'test_from')
            ->to('foo@sink.sendgrid.net', 'foo')
            ->cc('foo2@sink.sendgrid.net', 'foo2');
        $res = $this->transport->send($message->getSwiftMessage());

        $this->assertEquals(2, $res);

        $message = new Message($this->getMessage());
        $message->from('from@google.com', 'test_from')
            ->to('bar@sink.sendgrid.net', 'bar')
            ->bcc('bar2@sink.sendgrid.net', 'bar2');
        $res = $this->transport->send($message->getSwiftMessage());

        $this->assertEquals(2, $res);
    }

    public function testSendByPersonalization()
    {
        $message = new Message($this->getMessage());
        $message->from('from@google.com', 'test_from')
            ->to('dummy@sink.sendgrid.net')
            ->embedData([
                'personalizations' => [
                    [
                        'to' => [
                            'email' => 'foo@sink.sendgrid.net',
                            'name'  => 'foo',
                        ],
                    ],
                ],
            ], 'sendgrid/x-smtpapi');
        $res = $this->transport->send($message->getSwiftMessage());

        $this->assertEquals(1, $res);

        $message = new Message($this->getMessage());
        $message->from('from@google.com', 'test_from')
            ->to('dummy@sink.sendgrid.net')
            ->embedData([
                'personalizations' => [
                    [
                        'to' => [
                            'email' => 'to1@sink.sendgrid.net',
                            'name'  => 'to1',
                        ],
                    ],
                    [
                        'to' => [
                            'email' => 'to2@sink.sendgrid.net',
                            'name'  => 'to2',
                        ],
                        'cc' => [
                            'email' => 'cc1@sink.sendgrid.net',
                            'name'  => 'cc1',
                        ]
                    ],
                    [
                        'to' => [
                            'email' => 'to3@sink.sendgrid.net',
                            'name'  => 'to3',
                        ],
                        'bcc' => [
                            'email' => 'bcc1@sink.sendgrid.net',
                            'name'  => 'bcc1',
                        ]
                    ],
                ],
            ], 'sendgrid/x-smtpapi');
        $res = $this->transport->send($message->getSwiftMessage());

        $this->assertEquals(5, $res);
    }

    public function testGetPersonalizations()
    {


        $getPersonalizations = \Closure::bind(function ($message) {
            return $this->getPersonalizations($message);
        }, $this->transport, SendgridTransport::class);

        $message = $this->getMessage();

        $to = 'to_user@exsample.com';
        $to_name = 'to_user';
        $message->setTo($to, $to_name);

        $cc = 'cc_user@exsample.com';
        $cc_name = 'cc_user';
        $message->setCc($cc, $cc_name);

        $bcc = 'bcc_user@exsample.com';
        $bcc_name = 'bcc_user';
        $message->setBcc($bcc, $bcc_name);

        $res = $getPersonalizations($message);

        $this->assertEquals($to, Arr::get($res, '0.to.0.email'));
        $this->assertEquals($to_name, Arr::get($res, '0.to.0.name'));
        $this->assertEquals($cc, Arr::get($res, '0.cc.0.email'));
        $this->assertEquals($cc_name, Arr::get($res, '0.cc.0.name'));
        $this->assertEquals($bcc, Arr::get($res, '0.bcc.0.email'));
        $this->assertEquals($bcc_name, Arr::get($res, '0.bcc.0.name'));
    }

    public function testGetContents()
    {
        $getContents = \Closure::bind(function ($message) {
            return $this->getContents($message);
        }, $this->transport, SendgridTransport::class);

        $message = new Message($this->getMessage());
        $message->getSwiftMessage()->setChildren([new Swift_MimePart(
            'This is a test.'
        )]);

        $res = $getContents($message->getSwiftMessage());
        $this->assertEquals('text/plain', Arr::get($res, '0.type'));
        $this->assertEquals('This is a test.', Arr::get($res, '0.value'));
        $this->assertEquals('text/html', Arr::get($res, '1.type'));
        $this->assertEquals('Test body.', Arr::get($res, '1.value'));
    }

    public function testGetAttachments()
    {
        $getAttachment = \Closure::bind(function ($message) {
            return $this->getAttachments($message);
        }, $this->transport, SendgridTransport::class);

        $message = new Message($this->getMessage());

        $file = __DIR__ . '/test.png';
        $message->attach($file);

        $res = $getAttachment($message->getSwiftMessage());
        $this->assertEquals(base64_encode(file_get_contents($file)), Arr::get($res, '0.content'));
        $this->assertEquals('test.png', Arr::get($res, '0.filename'));
    }

    public function testSetParameters()
    {
        $setParameters = \Closure::bind(function ($message, $data) {
            return $this->setParameters($message, $data);
        }, $this->transport, SendgridTransport::class);

        $parameters = [
            'categories' => 'category1',
        ];
        $message = new Message($this->getMessage());
        $message->embedData($parameters, 'sendgrid/x-smtpapi');
        $data = [];
        $data = $setParameters($message->getSwiftMessage(), $data);
        $this->assertEquals($parameters, $data);
    }

    public function testSetPersonalizations()
    {
        $setParameters = \Closure::bind(function ($message, $data) {
            return $this->setParameters($message, $data);
        }, $this->transport, SendgridTransport::class);

        $personalizations = [
            [
                'substitutions' => [
                    'substitutions_key' => 'substitutions_value',
                ],
                'custom_args'   => [
                    'custom_args_key' => 'custom_args_value',
                ],
                'send_at'       => time(),
            ],
        ];

        $message = new Message($this->getMessage());
        $message->embedData([
            'personalizations' => $personalizations,
        ], 'sendgrid/x-smtpapi');
        $data = [];
        $data = $setParameters($message->getSwiftMessage(), $data);
        $this->assertEquals(['personalizations' => $personalizations], $data);
    }

    public function testGetFrom()
    {
        $getFrom = \Closure::bind(function ($message) {
            return $this->getFrom($message);
        }, $this->transport, SendgridTransport::class);

        $from = 'test@exsample.com';
        $from_name = 'test_user';

        $message = $this->getMessage();
        $message->setFrom($from, $from_name);

        $this->assertEquals(['email' => $from, 'name' => $from_name], $getFrom($message));
    }

    public function testReplyTo()
    {
        $getReplyTo = \Closure::bind(function ($message) {
            return $this->getReplyTo($message);
        }, $this->transport, SendgridTransport::class);

        $reply_to = 'test@exsample.com';
        $reply_to_name = 'test_user';

        $message = $this->getMessage();
        $message->setReplyTo($reply_to, $reply_to_name);

        $this->assertEquals(['email' => $reply_to, 'name' => $reply_to_name], $getReplyTo($message));
    }

    public function testOverrideApiKey()
    {
        $container = [];
        $history = GuzzleHttp\Middleware::history($container);
        $stack = GuzzleHttp\HandlerStack::create();
        $stack->push($history);
        $client = new GuzzleHttp\Client(['handler' => $stack]);
        $transport = new SendgridTransport($client, 'This is the wrong value');

        $message = new Message($this->getMessage());
        $message->from('from@google.com', 'test_from')
            ->to('to@sink.sendgrid.net', 'test_to')
            ->embedData([
                'api_key' => $this->api_key,
                'custom_args' => [
                    'custom_args_key' => 'custom_args_value',
                ],
            ], 'sendgrid/x-smtpapi');
        $transport->send($message->getSwiftMessage());

        /** @var \GuzzleHttp\Psr7\Request $request */
        $request = Arr::get($container, '0.request');
        $this->assertEquals('Bearer ' . $this->api_key, $request->getHeaderLine('Authorization'));
        $this->assertNotContains('"api_key":', (string)$request->getBody());
    }

    /**
     * @return Swift_Message
     */
    private function getMessage()
    {
        return new Swift_Message('Test subject', 'Test body.');
    }
}