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<?php
 
namespace SIPL\UCRM\wFirma;
 
use \Webit\WFirmaSDK\Contractors as Contractors;
use \Webit\WFirmaSDK\Invoices as Invoices;
use \Webit\WFirmaSDK\Payments as Payments;
 
class InvoiceSynchronizer extends Synchronizer {
    function getContractorId($clientId, $synchronize = TRUE) {
        if ($synchronize) {
            $synchronizer = new ContractorSynchronizer($this->wfirma, $this->helper);
            $synchronizer->synchronize($clientId);
        }
 
        $clientAttributeId = $this->helper->getAttributes()->getIdForCode('client');
 
        $crm = $this->helper->getApi();
        $clientData = $crm->get('/clients/' . $clientId);
        $wFirmaId = NULL;
        foreach ($clientData['attributes'] as $attribute) {
            if ($attribute['customAttributeId'] === $clientAttributeId) {
                $wFirmaId = $attribute['value'];
            }
        }
        if ($wFirmaId === NULL || $wFirmaId === '') {
            throw new \RuntimeException('Failed to get client ID for invoice');
        }
        return Contractors\ContractorId::create($wFirmaId);
    }
 
    function getTaxes() {
        $crm = $this->helper->getApi();
        $taxesData = $crm->get('/taxes');
 
        $taxes = [];
        foreach ($taxesData as $tax) {
            $taxes[$tax['id']] = $tax;
        }
        return $taxes;
    }
 
    function compareInvoicesContent(Invoices\InvoicesContent $c1, Invoices\InvoicesContent $c2) {
        return
            [$c1->name(), $c1->unit(), $c1->count(), $c1->price(), $c1->vat(), $c1->discount()]
            <=>
            [$c2->name(), $c2->unit(), $c2->count(), $c2->price(), $c2->vat(), $c2->discount()];
    }
 
    function synchronize(int $ucrmInvoiceId) {
        $crm = $this->helper->getApi();
        $wFirmaInvoices = $this->wfirma->invoicesApi();
 
        $invoiceAttributeId = $this->helper->getAttributes()->getIdForCode('invoice');
 
        $invoiceData = $crm->get('/invoices/' . $ucrmInvoiceId);
        if ($invoiceData['status'] == 0) {
            // Ignore drafts
            return FALSE;
        }
 
        $taxes = $this->getTaxes();
 
        $wFirmaId = '';
        foreach ($invoiceData['attributes'] as $attribute) {
            if ($attribute['customAttributeId'] === $invoiceAttributeId) {
                $wFirmaId = $attribute['value'];
            }
        }
 
        $wFirmaContractorId = $this->getContractorId($invoiceData['clientId']);
        $payment = Invoices\Payment::create(
            Payments\PaymentMethod::transfer(),
            new \DateTime($invoiceData['dueDate'])
        );
 
        if ($wFirmaId) {
            $invoice = $wFirmaInvoices->get(\Webit\WFirmaSDK\Invoices\InvoiceId::create($wFirmaId));
        } else {
            $type = \Webit\WFirmaSDK\Invoices\Type::vat();
            $series = \Webit\WFirmaSDK\Series\SeriesId::create($this->helper->getConfig()['wfirma_series_invoice'] ?? null);
            if ($invoiceData['proforma']) {
                $type = \Webit\WFirmaSDK\Invoices\Type::proformaVat();
                $series = \Webit\WFirmaSDK\Series\SeriesId::create($this->helper->getConfig()['wfirma_series_proforma'] ?? null);
            }
            $date = \DateTime::createFromFormat(\DateTimeInterface::ATOM, $invoiceData['createdDate']);
            $invoice = \Webit\WFirmaSDK\Invoices\Invoice::forContractorOfId(
                $wFirmaContractorId,
                $payment,
                $type,
                $series,
                $date,
                \Webit\WFirmaSDK\Invoices\Disposal::withDate($date)
            );
        }
 
        /** @var \Webit\WFirmaSDK\Invoices\Invoice $invoice */
        $changed = FALSE;
 
        if ($invoice->payment()->paymentMethod() != $payment->paymentMethod()
            || $invoice->payment()->paymentDate() != $payment->paymentDate()) {
            $invoice->changePayment($payment);
            $changed = TRUE;
        }
 
        if ($invoice->priceType() != Invoices\PriceType::brutto()) {
            $invoice->changePriceType(Invoices\PriceType::brutto());
            $changed = TRUE;
        }
 
        if ($invoice->schema() != Invoices\Schema::vatInvoiceDate()) {
            $invoice->changeSchema(Invoices\Schema::vatInvoiceDate());
            $changed = TRUE;
        }
 
        $currentContents = $invoice->invoiceContents();
        $expectedContents = [];
        foreach ($invoiceData['items'] as $i => $item) {
            $tax = $taxes[$item['tax1Id']];
            $content = Invoices\InvoicesContent::fromName(
                $item['label'],
                $item['unit'] ?? 'usł.',
                $item['quantity'],
                $item['price'],
                $tax['rate']
            );
            $expectedContents[] = $content;
        }
 
        $overrideContents = FALSE;
        if (count($currentContents) != count($expectedContents)) {
            $overrideContents = TRUE;
        } else {
            for ($i = 0; $i < count($currentContents); $i++) {
                if ($this->compareInvoicesContent($currentContents[$i], $expectedContents[$i]) != 0) {
                    $overrideContents = TRUE;
                    break;
                }
            }
        }
 
        if ($overrideContents) {
            $changed = TRUE;
            while (count($invoice->invoiceContents()) != 0) {
                $invoice->removeInvoiceContent($invoice->invoiceContents()[0]);
            }
            foreach ($expectedContents as $content) {
                $invoice->addInvoiceContent($content);
            }
        }
 
        if ($wFirmaId) {
            if ($changed) {
                $wFirmaInvoices->edit($invoice);
                return TRUE;
            }
            return FALSE;
        } else {
            $invoice = $wFirmaInvoices->add($invoice);
            $crm->patch(
                '/invoices/' . $ucrmInvoiceId,
                [
                    'attributes' => [
                        [
                            'customAttributeId' => $invoiceAttributeId,
                            'value' => (string)($invoice->id()->id()),
                        ],
                    ],
                ]
            );
            return TRUE;
        }
    }
}