<?php
use Doctrine\Common\Annotations\AnnotationRegistry;
$loader = include __DIR__.'/vendor/autoload.php'; // composer's autoload.php
AnnotationRegistry::registerLoader(array($loader, 'loadClass'));

<?php
use Webit\WFirmaSDK\Auth\BasicAuth;

$auth = new BasicAuth('your-user-name', 'your-password', $companyId = 1123); // $companyId is optional

<?php

use Webit\WFirmaSDK\Entity\ModuleApiFactory;
use Webit\WFirmaSDK\Entity\EntityApiFactory;

$entityApiFactory = new EntityApiFactory();
$entityApi = $entityApiFactory->create($auth);

$apiFactory = new ModuleApiFactory($entityApi);

<?php
use Webit\WFirmaSDK\Entity\Parameters\Parameters;
use Webit\WFirmaSDK\Entity\Parameters\Order;
use Webit\WFirmaSDK\Entity\Parameters\Pagination;
use Webit\WFirmaSDK\Entity\Parameters\Fields;
use \Webit\WFirmaSDK\Entity\Parameters\Conditions;
use \Webit\WFirmaSDK\Entity\Parameters\Condition;

$conditions = Conditions::fromOrConditions(
    Condition::eq('id', '123'),
    Condition::eq('id', '456'),
    Condition::eq('id', '789')
);
$conditions->addAndConditions(
    Condition::le('alreadypaid', '300')
);
$parameters = Parameters::findParameters(
    $conditions,
    Order::ascending("name")->thenDescending("created"), // optional - ordering
    Pagination::create(20, 2), // optional - limit, page no
    Fields::fromArray(array("id", "name")) // optional - subset of fields to select
);

$seriesApi = $apiFactory->seriesApi();

$series = $seriesApi->find($parameters); // returns array of 20 Series (page 2)

// returns EntityIterator, allows to iterate over all the matching Series loaded in batches of 20
$series = $seriesApi->findAll($parameters);
/**
* @var int $i
* @var \Webit\WFirmaSDK\Series\Series $seriesItem */
foreach ($series as $i => $seriesItem) {
    // do some stuff on ALL the matching elements
}

$seriesCount = $seriesApi->count($parameters); // return number of matching series

<?php
use Webit\WFirmaSDK\Contractors\Contractor;
use Webit\WFirmaSDK\Contractors\InvoiceAddress;
use Webit\WFirmaSDK\Invoices\InvoicesContent;
use Webit\WFirmaSDK\Goods\GoodId;

/** @var \Webit\WFirmaSDK\Invoices\InvoicesApi $api */
$api = $apiFactory->invoicesApi();

// add a new invoice
$invoice = \Webit\WFirmaSDK\Invoices\Invoice::forContractor(
    new Contractor(
        'client name',
        'alt name',
        '1234565432', // vat no
        null, // regon
        new InvoiceAddress(
            'ul. Mokra 12',
            '01-006',
            'Warszawa',
            'PL'
        )
    )
);

$invoice->addInvoiceContent(
    InvoicesContent::fromGoodId(
        GoodId::create(123),
        3,
        123.32,
        23
    )
);

$invoice->addInvoiceContent(
    InvoicesContent::fromName(
        'some stuff',
        'szt.',
        3,
        123.32,
        23
    )
);

$invoice = $api->add($invoice);

// get invoice by id
$invoice = $api->get(\Webit\WFirmaSDK\Invoices\InvoiceId::create(123));

// edit the invoice
$invoice->changePayment(
    $invoice->payment()->withPaymentDate(new \DateTime())
);

// do some more edits
$invoice = $api->edit($invoice);

// delete the invoice
$api->delete($invoice->id());

<?php
use Webit\WFirmaSDK\Contractors\Contractor;

/** @var \Webit\WFirmaSDK\Contractors\ContractorsApi $api */
$api = $apiFactory->contractorsApi($auth);

// add a new contractor
$contractor = new Contractor('my-new-contractor');
$contractor = $api->add($contractor);

// edit the contractor
$contractor->rename('new name', 'new alt name');
$contractor = $api->edit($contractor);

// delete the contractor
$api->delete($contractor->id());

// get contractor by id
$contractor = $api->get(\Webit\WFirmaSDK\Contractors\ContractorId::create(123));