Add flexible receipt generator

master
Skylar Ittner 6 years ago
parent d8a561ac0e
commit 5df113c70d

@ -144,41 +144,55 @@ switch ($VARS['action']) {
break;
case "getreceipt":
header("Content-Type: text/html");
require_once __DIR__ . "/lib/receipts.php";
$format = "html";
$width = 64;
if (isset($VARS['width']) && preg_match("/[0-9]+/", $VARS['width']) && (int) $VARS['width'] > 0) {
$width = (int) $VARS['width'];
}
if (isset($VARS['format'])) {
switch ($VARS['format']) {
case "text":
$format = "text";
header("Content-Type: text/plain");
break;
case "json":
$format = "json";
header("Content-Type: application/json");
break;
default:
$format = "html";
header("Content-Type: text/html");
}
}
if (!$database->has('transactions', ['txid' => $VARS['txid']])) {
header("Content-Type: application/json");
exit(json_encode(["status" => "ERROR", "txid" => null]));
}
$receipt = new Receipt();
$tx = $database->get('transactions', ['txid', 'txdate', 'customerid', 'type', 'cashier', 'discountpercent'], ['txid' => $VARS['txid']]);
// Info
$txid = $tx['txid'];
$datetime = date(DATETIME_FORMAT, strtotime($tx['txdate']));
$type = $tx['type'];
$cashier = getUserByID($tx['cashier'])['name'];
$customerid = $tx['customerid'];
$customerline = "";
if (!is_null($customerid) && !empty($customerid)) {
$customerline = "<br />Customer: " . $database->get('customers', 'name', ['customerid' => $customerid]);
}
$itemhtml = "";
// Items
$itemlines = [];
$items = $database->select('lines', ['amount', 'name', 'itemid', 'qty'], ['txid' => $txid]);
$subtotal = 0.0;
$paid = 0.0;
foreach ($items as $i) {
$itemhtml .= "\n";
$itemhtml .= '<div class="flexrow">';
$itemhtml .= '<div>' . $i['name'] . '</div>';
$itemhtml .= '<div>$' . number_format($i['amount'], 2) . '</div>';
$itemhtml .= '<div>x' . (float) $i['qty'] . '</div>';
$itemhtml .= '<div>$' . number_format($i['qty'] * $i['amount'] * 1.0, 2) . '</div>';
$itemhtml .= '</div>';
$itemlines[] = new ReceiptLine(
$i['name'], (float) $i['qty'] . '@' . number_format($i['amount'], 2), '$' . number_format($i['qty'] * $i['amount'] * 1.0, 2)
);
$subtotal += $i['qty'] * $i['amount'] * 1.0;
}
// Payments
$total = $subtotal * (1.0 - ((float) $tx['discountpercent'] / 100));
$paymenthtml = "";
$paymentlines = [];
$payments = $database->select('payments', [
'[>]payment_types' => ['type' => 'typeid']
], [
@ -190,63 +204,54 @@ switch ($VARS['action']) {
if ($p['amount'] < 0) {
continue;
}
$paymenthtml .= "\n";
$paymenthtml .= '<div class="flexrow">';
$paymenthtml .= '<div>' . lang($p['text'], false) . '</div>';
$paymenthtml .= '<div>$' . number_format($p['amount'] * 1.0, 2) . '</div>';
$paymenthtml .= '</div>';
$paymentlines[] = new ReceiptLine(lang($p['text'], false), "", '$' . number_format($p['amount'] * 1.0, 2));
$paid += $p['amount'] * 1.0;
}
$change = $paid - $total;
if ($change <= 0) {
$change = 0.0;
}
$subtotalstr = number_format($subtotal, 2);
$paidstr = number_format($paid, 2);
$changestr = number_format($change, 2);
$totalstr = $subtotalstr;
$discountstr = "";
// Totals
$subtotalline = new ReceiptLine("Subtotal:", "", '$' . number_format($subtotal, 2));
$paidline = new ReceiptLine("Paid:", "", '$' . number_format($paid, 2), ReceiptLine::LINEFORMAT_BOLD);
$changeline = new ReceiptLine("Change:", "", '$' . number_format($change, 2), ReceiptLine::LINEFORMAT_BOLD);
$totalline = new ReceiptLine("Total:", "", '$' . number_format($subtotal, 2), ReceiptLine::LINEFORMAT_BOLD);
$receipt->appendLine(new ReceiptLine("Date: $datetime"));
$receipt->appendLine(new ReceiptLine("Tx. ID: $txid"));
$receipt->appendLine(new ReceiptLine("Cashier: $cashier"));
if (!is_null($customerid) && !empty($customerid)) {
$customer = $database->get('customers', 'name', ['customerid' => $customerid]);
$receipt->appendLine(new ReceiptLine("Customer: $customer"));
}
$receipt->appendBreak();
$receipt->appendLines($itemlines);
$receipt->appendBreak();
$receipt->appendLine($subtotalline);
if ($tx['discountpercent'] > 0) {
$discountstr = '<div class="flexrow"><span>Discount: </span><span>' . (float) $tx['discountpercent'] . '% off</span></div>';
$totalstr = number_format($total, 2);
}
$html = <<<END
<!DOCTYPE html>
<meta charset="UTF-8">
<meta name="viewport" content="width=device-width, initial-scale=1">
<title>Tx #$txid</title>
<style nonce="$SECURE_NONCE">
.flexrow {
display: flex;
justify-content: space-between;
margin: 0;
}
</style>
<hr />
Date: $datetime<br />
Tx. ID: $txid<br />
Cashier: $cashier
$customerline
<hr />
<div id="items">
$itemhtml
</div>
<hr />
<div class="flexrow"><span>Subtotal: </span><span>$$subtotalstr</span></div>
$discountstr
<b class="flexrow"><span>Total: </span><span>$$totalstr</span></b>
<hr />
<div id="payments">
$paymenthtml
</div>
<hr />
<b class="flexrow"><span>Paid: </span><span>$$paidstr</span></b>
<b class="flexrow"><span>Change: </span><span>$$changestr</span></b>
END;
exit($html);
$receipt->appendLine(new ReceiptLine("Discount:", "", (float) $tx['discountpercent'] . '% off'));
$totalline = new ReceiptLine("Total:", "", '$' . number_format($total, 2), ReceiptLine::LINEFORMAT_BOLD);
}
$receipt->appendLine($totalline);
$receipt->appendBreak();
$receipt->appendLines($paymentlines);
$receipt->appendBreak();
$receipt->appendLine($paidline);
$receipt->appendLine($changeline);
$output = "";
switch ($format) {
case "text":
$output = $receipt->getPlainText($width);
break;
case "json":
$output = $receipt->getJson($width);
break;
default:
$output = $receipt->getHtml("Tx. #$txid");
}
exit($output);
break;
case "itemsearch":
header("Content-Type: application/json");

@ -0,0 +1,240 @@
<?php
/*
* This Source Code Form is subject to the terms of the Mozilla Public
* License, v. 2.0. If a copy of the MPL was not distributed with this
* file, You can obtain one at http://mozilla.org/MPL/2.0/.
*/
/**
* A single variable-width line on a receipt, with different formatting options
*/
class ReceiptLine {
const LINEFORMAT_PLAIN = 1;
const LINEFORMAT_BOLD = 2;
const LINEFORMAT_HR = 4;
const LINEFORMAT_CENTER = 8;
private $left = "";
private $middle = "";
private $right = "";
private $format;
function __construct($l = "", $m = "", $r = "", $f = ReceiptLine::LINEFORMAT_PLAIN) {
$this->left = $l;
$this->middle = $m;
$this->right = $r;
$this->format = $f;
}
function getLeft() {
return $this->left;
}
function getMiddle() {
return $this->middle;
}
function getRight() {
return $this->right;
}
function hasFormat($format) {
return ($this->format & $format);
}
function getHtml() {
if ($this->hasFormat($this::LINEFORMAT_HR)) {
return "<hr />";
}
$html = "";
if (!empty($this->left)) {
$html .= '<span>' . htmlspecialchars($this->left) . '&nbsp;</span>';
}
if (!empty($this->middle)) {
$html .= '<span>' . htmlspecialchars($this->middle) . '&nbsp;</span>';
}
if (!empty($this->right)) {
$html .= '<span>' . htmlspecialchars($this->right) . '</span>';
}
$classes = ["flex"];
if ($this->hasFormat($this::LINEFORMAT_BOLD)) {
$classes[] = "bold";
}
if ($this->hasFormat($this::LINEFORMAT_CENTER)) {
$classes[] = "centered";
}
$classstr = implode(" ", $classes);
return "<div class=\"$classstr\">$html</div>";
}
function getPlainText($width) {
if ($this->hasFormat($this::LINEFORMAT_HR)) {
return str_repeat("-", $width);
}
$left = $this->left;
$middle = $this->middle;
$right = $this->right;
$leftln = strlen($left);
$middleln = strlen($middle);
$rightln = strlen($right);
if ($middleln > 0) {
$middleln++;
$middle = " " . $middle;
}
if ($rightln > 0) {
$rightln++;
$right = " " . $right;
}
$strln = $leftln + $middleln + $rightln;
if ($strln < $width) {
if ($this->hasFormat($this::LINEFORMAT_CENTER)) {
return str_pad($left . $middle . $right, $width, " ", STR_PAD_BOTH);
} else {
$middle = str_pad($middle, $width - $leftln - $rightln, " ", STR_PAD_BOTH);
}
} else if ($strln > $width) {
$loseln = $strln - $width;
$left = substr($this->left, 0, $leftln - $loseln);
}
return $left . $middle . $right;
}
function getArray($width = 64) {
$data = [
"left" => $this->left,
"middle" => $this->middle,
"right" => $this->right,
"text" => $this->getPlainText($width),
"format" => []
];
if ($this->hasFormat($this::LINEFORMAT_PLAIN)) {
$data['format'][] = "plain";
}
if ($this->hasFormat($this::LINEFORMAT_BOLD)) {
$data['format'][] = "bold";
}
if ($this->hasFormat($this::LINEFORMAT_HR)) {
$data['format'][] = "hr";
}
if ($this->hasFormat($this::LINEFORMAT_CENTER)) {
$data['format'][] = "center";
}
return $data;
}
}
class Receipt {
private $lines = [];
private $header = [];
private $footer = [];
function __construct() {
}
function appendLine(ReceiptLine $line) {
$this->lines[] = $line;
}
function appendLines($lines) {
foreach ($lines as $l) {
$this->lines[] = $l;
}
}
function appendHeader(ReceiptLine $line) {
$this->header[] = $line;
}
function appendFooter(ReceiptLine $line) {
$this->footer[] = $line;
}
function appendBreak() {
$this->lines[] = new ReceiptLine("", "", "", ReceiptLine::LINEFORMAT_HR);
}
function getHtml($title = "") {
global $SECURE_NONCE;
$html = <<<END
<!DOCTYPE html>
<meta charset="UTF-8">
<meta name="viewport" content="width=device-width, initial-scale=1">
<title>$title</title>
<style nonce="$SECURE_NONCE">
.flex {
display: flex;
justify-content: space-between;
margin: 0;
}
.bold {
font-weight: bold;
}
.centered {
justify-content: center;
}
</style>
END;
if (count($this->header) > 0) {
foreach ($this->header as $line) {
$html .= $line->getHtml() . "\n";
}
$html .= (new ReceiptLine("", "", "", ReceiptLine::LINEFORMAT_HR))->getHtml();
}
foreach ($this->lines as $line) {
$html .= $line->getHtml() . "\n";
}
if (count($this->footer) > 0) {
$html .= (new ReceiptLine("", "", "", ReceiptLine::LINEFORMAT_HR))->getHtml();
foreach ($this->footer as $line) {
$html .= $line->getHtml() . "\n";
}
}
return $html;
}
function getPlainText($width) {
$lines = [];
if (count($this->header) > 0) {
foreach ($this->header as $line) {
$lines[] = $line->getPlainText($width);
}
$lines[] = (new ReceiptLine("", "", "", ReceiptLine::LINEFORMAT_HR))->getPlainText($width);
}
foreach ($this->lines as $line) {
$lines[] = $line->getPlainText($width);
}
if (count($this->footer) > 0) {
$lines[] = (new ReceiptLine("", "", "", ReceiptLine::LINEFORMAT_HR))->getPlainText($width);
foreach ($this->footer as $line) {
$lines[] = $line->getPlainText($width);
}
}
return implode("\n", $lines);
}
function getArray($width = 64) {
$header = [];
$lines = [];
$footer = [];
foreach ($this->header as $line) {
$header[] = $line->getArray($width);
}
foreach ($this->lines as $line) {
$lines[] = $line->getArray($width);
}
foreach ($this->footer as $line) {
$footer[] = $line->getArray($width);
}
return ["header" => $header, "lines" => $lines, "footer" => $footer];
}
function getJson($width = 64) {
return json_encode($this->getArray($width));
}
}
Loading…
Cancel
Save