<?php

use chillerlan\QRCode\QRCode;
use chillerlan\QRCode\QROptions;
use chillerlan\QRCode\Output\QROutputInterface;

class Invoice extends mfBaseModel {
    private $positions;
    private $voicenumbers;
    private $pdf;


    public function createPdf() {
        if($this->id) {
            $invoice_number = $this->invoice_number;
            $invoice_date = $this->invoice_date;
        } else {
            $invoice_number = "PROFORMA";
            $invoice_date = 1;
        }

        $filename = "";
        $positions = $this->getProperty("positions");

        $vat = [];
        foreach ($positions as $p) {
            if (!array_key_exists($p->vatrate, $vat)) {
                $vat[$p->vatrate] = 0;
            }
            $vat[$p->vatrate] += $p->price_gross - ($p->price * $p->amount);
        }

        $pdf_vars = [
            "invoice" => $this,
            "vat" => $vat,
            "bank_iban" => TT_INVOICE_BANK_IBAN,
            "bank_bic" => TT_INVOICE_BANK_BIC,
            "bank_bank"=> TT_INVOICE_BANK_BANK,
            "bank_owner" => TT_INVOICE_BANK_OWNER
        ];

        // Replace placeholders in header
        $headerHtml = file_get_contents(BASEDIR . "/Layout/default/Invoice/PDF_HEADER.html");
        $headerHtml = str_replace("{{ basedir }}", BASEDIR, $headerHtml);
        $headerHtml = str_replace("{{ addressLine_1 }}", $this->company ? $this->company : "", $headerHtml);
        $headerHtml = str_replace("{{ addressLine_2 }}", $this->firstname . " " . $this->lastname, $headerHtml);
        $headerHtml = str_replace("{{ addressLine_3 }}", nl2br($this->street), $headerHtml);
        $headerHtml = str_replace("{{ addressLine_4 }}", $this->zip . " " . $this->city, $headerHtml);
        $headerHtml = str_replace("{{ addressLine_5 }}", $this->country != "Österreich" ? $this->country : "", $headerHtml);
        $headerHtml = str_replace("{{ customerNumber }}", $this->customer_number, $headerHtml);
        $headerHtml = str_replace("{{ billingAccount }}", $this->fibu_account_number, $headerHtml);
        $headerHtml = str_replace("{{ invoiceNumber }}", $invoice_number, $headerHtml);
        $headerHtml = str_replace("{{ invoiceDate }}", date("d.m.Y", $invoice_date), $headerHtml);
        $headerHtml = str_replace("{{ vatHtml }}", $this->uid ? "<tr><td>Ihre UID:</td><td>" . $this->uid . "</td></tr>" : "", $headerHtml);
        $headerHtml = str_replace("{{ qrCodeSrc }}", $this->getSepaQRCode($invoice_number, round($this->total_gross, 2)), $headerHtml);

        $headerFile = BASEDIR . "/var/temp/invoice_header-" . date("U") . "-" . rand(1000, 9999) . ".html";
        file_put_contents($headerFile, $headerHtml);


        // Replace placeholders in header
        $footerHtml = file_get_contents(BASEDIR . "/Layout/default/Invoice/PDF_FOOTER.html");
        $footerHtml = str_replace("{{ bank_iban }}", TT_INVOICE_BANK_IBAN_FORMATTED, $footerHtml);
        $footerHtml = str_replace("{{ bank_bic }}", TT_INVOICE_BANK_BIC, $footerHtml);
        $footerHtml = str_replace("{{ bank_bank }}", TT_INVOICE_BANK_BANK, $footerHtml);
        $footerHtml = str_replace("{{ bank_owner }}", TT_INVOICE_BANK_OWNER, $footerHtml);


        $footerFile = BASEDIR . "/var/temp/invoice_footer-" . date("U") . "-" . rand(1000, 9999) . ".html";
        file_put_contents($footerFile, $footerHtml);


        $pdf = new PdfForm("Invoice/PDF_MAIN", $pdf_vars);
        $wkhtmltopdfArgs = "--header-html $headerFile --footer-html $footerFile";
        $filename = $pdf->render($wkhtmltopdfArgs);

        return $filename;

    }

    public function getSepaQRCode($paymentReference, $amount) {
        $xinonIBAN = TT_INVOICE_BANK_IBAN;
        $xinonBIC = TT_INVOICE_BANK_BIC;
        $xinonOwner = TT_INVOICE_BANK_OWNER;

        $epc = "BCD
001
1
SCT
$xinonBIC
$xinonOwner
$xinonIBAN
EUR$amount
XINO
$paymentReference

XINON GmbH";

        return (new QRCode)->render($epc);
    }


    public function sendByEmail($to_email = false) {
        if(!$this->id) return false;

        $pdf = $this->getProperty("pdf");
        if(!$pdf || !$pdf->name) {
            return false;
        }

        $pdf_filename = $pdf->getFullPath();
        if(!$pdf_filename || !file_exists($pdf_filename)) {
            return false;
        }

        $tpl = new Layout();
        $tpl->setTemplate("Emailtemplates/invoice/invoice-email");

        $pdf_vars = [
            "invoice" => $this
        ];

        foreach($pdf_vars as $name => $val) {
            $tpl->set($name, $val);
        }

        $body = $tpl->render();
        $values = $tpl->getReturnedValue();

        $subject = $values['subject'];
        $from = $values['from_email'];
        $from_name = $values['from_email_name'];
        if($to_email) {
            $to = $to_email;
        } else {
            $to = trim($this->email);
        }

        if(!$to) {
            $this->log->error(__METHOD__.": Invoice ".$this->invoice_number." missing email");
        }


        if(!$subject || !$from || !$from_name || !$to) {
            $this->log->warn(__METHOD__.": Invoice ".$this->invoice_number." could not be sent. Values missing. (subject: '$subject', from: '$from_name', from_email: '$from', to: '$to')");
            return false;
        } else {
            $email = new Emailnotification();
            $email->setSubject($subject);
            $email->setBody($body);
            $email->setFrom($from, $from_name);
            $email->setTo($to);
            $email->setHeader("X-".MFAPPNAME."-Iid", $this->id);
            $email->addAttachment($pdf_filename, null, $pdf->filename, "application/pdf");
            $email->send();
            $this->log->info(__METHOD__.": Sending Invoice ".$this->invoice_number." to $to");
        }

        return true;
    }

    public function getProperty($name) {
        if($this->$name == null) {

            if(!$this->id) {
                return null;
            }


            if($name == "positions") {
                $positions = InvoicepositionModel::search(["invoice_id" => $this->id]);
                $this->positions = $positions;
                return $this->positions;
            }

            if($name == "voicenumbers") {
                $voicenumbers = InvoiceVoicenumberModel::search(["invoice_id" => $this->id]);
                $this->voicenumbers = $voicenumbers;
                return $this->voicenumbers;
            }

            if($name == "pdf") {
                $ifile = InvoiceFileModel::getFirst(["invoice_id" => $this->id]);
                if(!$ifile) return null;

                $file = $ifile->file;
                if(!$file) return null;

                $this->pdf = $file;
                return $this->pdf;
            }

            if($name == "creator") {
                $this->creator = mfValuecache::singleton()->get("Worker-id-".$this->create_by);
                if($this->creator === null) {
                    $this->creator = new User($this->create_by);
                    if($this->creator->id) {
                        mfValuecache::singleton()->set("Worker-id-".$this->create_by, $this->creator);
                    }
                }
                return $this->creator;
            }

            if($name == "editor") {
                $this->editor = mfValuecache::singleton()->get("Worker-id-".$this->edit_by);
                if($this->editor === null) {
                    $this->editor = new User($this->edit_by);
                    if($this->editor->id) {
                        mfValuecache::singleton()->set("Worker-id-".$this->edit_by, $this->editor);
                    }
                }
                return $this->editor;
            }

            $classname = ucfirst($name);
            $idfield = $name."_id";
            $this->$name = mfValuecache::singleton()->get("mfObjectmodel-$name-".$this->$idfield);
            if(!$this->$name) {
                $this->$name = new $classname($this->$idfield);
            }

            if($this->$name->id) {
                mfValuecache::singleton()->set("mfObjectmodel-$name-".$this->$name->id, $this->$name);
                return $this->$name;
            } else {
                return null;
            }

        }

        return $this->$name;
    }
}