Add flexible receipt generator
This commit is contained in:
parent
d8a561ac0e
commit
5df113c70d
137
action.php
137
action.php
@ -144,41 +144,55 @@ switch ($VARS['action']) {
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break;
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case "getreceipt":
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header("Content-Type: text/html");
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require_once __DIR__ . "/lib/receipts.php";
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$format = "html";
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$width = 64;
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if (isset($VARS['width']) && preg_match("/[0-9]+/", $VARS['width']) && (int) $VARS['width'] > 0) {
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$width = (int) $VARS['width'];
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}
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if (isset($VARS['format'])) {
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switch ($VARS['format']) {
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case "text":
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$format = "text";
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header("Content-Type: text/plain");
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break;
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case "json":
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$format = "json";
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header("Content-Type: application/json");
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break;
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default:
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$format = "html";
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header("Content-Type: text/html");
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}
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}
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if (!$database->has('transactions', ['txid' => $VARS['txid']])) {
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header("Content-Type: application/json");
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exit(json_encode(["status" => "ERROR", "txid" => null]));
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}
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$receipt = new Receipt();
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$tx = $database->get('transactions', ['txid', 'txdate', 'customerid', 'type', 'cashier', 'discountpercent'], ['txid' => $VARS['txid']]);
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// Info
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$txid = $tx['txid'];
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$datetime = date(DATETIME_FORMAT, strtotime($tx['txdate']));
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$type = $tx['type'];
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$cashier = getUserByID($tx['cashier'])['name'];
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$customerid = $tx['customerid'];
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$customerline = "";
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if (!is_null($customerid) && !empty($customerid)) {
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$customerline = "<br />Customer: " . $database->get('customers', 'name', ['customerid' => $customerid]);
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}
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$itemhtml = "";
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// Items
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$itemlines = [];
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$items = $database->select('lines', ['amount', 'name', 'itemid', 'qty'], ['txid' => $txid]);
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$subtotal = 0.0;
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$paid = 0.0;
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foreach ($items as $i) {
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$itemhtml .= "\n";
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$itemhtml .= '<div class="flexrow">';
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$itemhtml .= '<div>' . $i['name'] . '</div>';
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$itemhtml .= '<div>$' . number_format($i['amount'], 2) . '</div>';
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$itemhtml .= '<div>x' . (float) $i['qty'] . '</div>';
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$itemhtml .= '<div>$' . number_format($i['qty'] * $i['amount'] * 1.0, 2) . '</div>';
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$itemhtml .= '</div>';
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$itemlines[] = new ReceiptLine(
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$i['name'], (float) $i['qty'] . '@' . number_format($i['amount'], 2), '$' . number_format($i['qty'] * $i['amount'] * 1.0, 2)
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);
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$subtotal += $i['qty'] * $i['amount'] * 1.0;
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}
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// Payments
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$total = $subtotal * (1.0 - ((float) $tx['discountpercent'] / 100));
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$paymenthtml = "";
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$paymentlines = [];
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$payments = $database->select('payments', [
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'[>]payment_types' => ['type' => 'typeid']
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], [
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@ -190,63 +204,54 @@ switch ($VARS['action']) {
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if ($p['amount'] < 0) {
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continue;
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}
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$paymenthtml .= "\n";
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$paymenthtml .= '<div class="flexrow">';
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$paymenthtml .= '<div>' . lang($p['text'], false) . '</div>';
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$paymenthtml .= '<div>$' . number_format($p['amount'] * 1.0, 2) . '</div>';
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$paymenthtml .= '</div>';
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$paymentlines[] = new ReceiptLine(lang($p['text'], false), "", '$' . number_format($p['amount'] * 1.0, 2));
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$paid += $p['amount'] * 1.0;
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}
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$change = $paid - $total;
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if ($change <= 0) {
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$change = 0.0;
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}
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$subtotalstr = number_format($subtotal, 2);
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$paidstr = number_format($paid, 2);
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$changestr = number_format($change, 2);
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$totalstr = $subtotalstr;
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$discountstr = "";
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if ($tx['discountpercent'] > 0) {
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$discountstr = '<div class="flexrow"><span>Discount: </span><span>' . (float) $tx['discountpercent'] . '% off</span></div>';
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$totalstr = number_format($total, 2);
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}
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// Totals
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$subtotalline = new ReceiptLine("Subtotal:", "", '$' . number_format($subtotal, 2));
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$paidline = new ReceiptLine("Paid:", "", '$' . number_format($paid, 2), ReceiptLine::LINEFORMAT_BOLD);
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$changeline = new ReceiptLine("Change:", "", '$' . number_format($change, 2), ReceiptLine::LINEFORMAT_BOLD);
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$totalline = new ReceiptLine("Total:", "", '$' . number_format($subtotal, 2), ReceiptLine::LINEFORMAT_BOLD);
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$html = <<<END
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<!DOCTYPE html>
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<meta charset="UTF-8">
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<meta name="viewport" content="width=device-width, initial-scale=1">
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<title>Tx #$txid</title>
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<style nonce="$SECURE_NONCE">
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.flexrow {
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display: flex;
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justify-content: space-between;
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margin: 0;
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}
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</style>
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<hr />
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Date: $datetime<br />
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Tx. ID: $txid<br />
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Cashier: $cashier
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$customerline
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<hr />
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<div id="items">
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$itemhtml
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</div>
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<hr />
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<div class="flexrow"><span>Subtotal: </span><span>$$subtotalstr</span></div>
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$discountstr
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<b class="flexrow"><span>Total: </span><span>$$totalstr</span></b>
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<hr />
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<div id="payments">
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$paymenthtml
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</div>
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<hr />
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<b class="flexrow"><span>Paid: </span><span>$$paidstr</span></b>
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<b class="flexrow"><span>Change: </span><span>$$changestr</span></b>
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END;
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exit($html);
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$receipt->appendLine(new ReceiptLine("Date: $datetime"));
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$receipt->appendLine(new ReceiptLine("Tx. ID: $txid"));
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$receipt->appendLine(new ReceiptLine("Cashier: $cashier"));
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if (!is_null($customerid) && !empty($customerid)) {
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$customer = $database->get('customers', 'name', ['customerid' => $customerid]);
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$receipt->appendLine(new ReceiptLine("Customer: $customer"));
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}
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$receipt->appendBreak();
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$receipt->appendLines($itemlines);
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$receipt->appendBreak();
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$receipt->appendLine($subtotalline);
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if ($tx['discountpercent'] > 0) {
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$receipt->appendLine(new ReceiptLine("Discount:", "", (float) $tx['discountpercent'] . '% off'));
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$totalline = new ReceiptLine("Total:", "", '$' . number_format($total, 2), ReceiptLine::LINEFORMAT_BOLD);
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}
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$receipt->appendLine($totalline);
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$receipt->appendBreak();
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$receipt->appendLines($paymentlines);
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$receipt->appendBreak();
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$receipt->appendLine($paidline);
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$receipt->appendLine($changeline);
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$output = "";
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switch ($format) {
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case "text":
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$output = $receipt->getPlainText($width);
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break;
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case "json":
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$output = $receipt->getJson($width);
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break;
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default:
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$output = $receipt->getHtml("Tx. #$txid");
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}
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exit($output);
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break;
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case "itemsearch":
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header("Content-Type: application/json");
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240
lib/receipts.php
Normal file
240
lib/receipts.php
Normal file
@ -0,0 +1,240 @@
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<?php
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/*
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* This Source Code Form is subject to the terms of the Mozilla Public
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* License, v. 2.0. If a copy of the MPL was not distributed with this
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* file, You can obtain one at http://mozilla.org/MPL/2.0/.
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*/
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/**
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* A single variable-width line on a receipt, with different formatting options
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*/
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class ReceiptLine {
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const LINEFORMAT_PLAIN = 1;
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const LINEFORMAT_BOLD = 2;
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const LINEFORMAT_HR = 4;
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const LINEFORMAT_CENTER = 8;
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private $left = "";
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private $middle = "";
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private $right = "";
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private $format;
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function __construct($l = "", $m = "", $r = "", $f = ReceiptLine::LINEFORMAT_PLAIN) {
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$this->left = $l;
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$this->middle = $m;
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$this->right = $r;
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$this->format = $f;
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}
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function getLeft() {
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return $this->left;
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}
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function getMiddle() {
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return $this->middle;
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}
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function getRight() {
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return $this->right;
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}
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function hasFormat($format) {
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return ($this->format & $format);
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}
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function getHtml() {
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if ($this->hasFormat($this::LINEFORMAT_HR)) {
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return "<hr />";
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}
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$html = "";
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if (!empty($this->left)) {
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$html .= '<span>' . htmlspecialchars($this->left) . ' </span>';
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}
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if (!empty($this->middle)) {
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$html .= '<span>' . htmlspecialchars($this->middle) . ' </span>';
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}
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if (!empty($this->right)) {
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$html .= '<span>' . htmlspecialchars($this->right) . '</span>';
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}
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$classes = ["flex"];
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if ($this->hasFormat($this::LINEFORMAT_BOLD)) {
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$classes[] = "bold";
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}
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if ($this->hasFormat($this::LINEFORMAT_CENTER)) {
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$classes[] = "centered";
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}
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$classstr = implode(" ", $classes);
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return "<div class=\"$classstr\">$html</div>";
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}
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function getPlainText($width) {
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if ($this->hasFormat($this::LINEFORMAT_HR)) {
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return str_repeat("-", $width);
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}
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$left = $this->left;
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$middle = $this->middle;
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$right = $this->right;
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$leftln = strlen($left);
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$middleln = strlen($middle);
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$rightln = strlen($right);
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if ($middleln > 0) {
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$middleln++;
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$middle = " " . $middle;
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}
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if ($rightln > 0) {
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$rightln++;
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$right = " " . $right;
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}
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$strln = $leftln + $middleln + $rightln;
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if ($strln < $width) {
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if ($this->hasFormat($this::LINEFORMAT_CENTER)) {
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return str_pad($left . $middle . $right, $width, " ", STR_PAD_BOTH);
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} else {
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$middle = str_pad($middle, $width - $leftln - $rightln, " ", STR_PAD_BOTH);
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}
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} else if ($strln > $width) {
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$loseln = $strln - $width;
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$left = substr($this->left, 0, $leftln - $loseln);
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}
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return $left . $middle . $right;
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}
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function getArray($width = 64) {
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$data = [
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"left" => $this->left,
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"middle" => $this->middle,
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"right" => $this->right,
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"text" => $this->getPlainText($width),
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"format" => []
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];
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if ($this->hasFormat($this::LINEFORMAT_PLAIN)) {
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$data['format'][] = "plain";
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}
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if ($this->hasFormat($this::LINEFORMAT_BOLD)) {
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$data['format'][] = "bold";
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}
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if ($this->hasFormat($this::LINEFORMAT_HR)) {
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$data['format'][] = "hr";
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}
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if ($this->hasFormat($this::LINEFORMAT_CENTER)) {
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$data['format'][] = "center";
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}
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return $data;
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}
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}
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class Receipt {
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private $lines = [];
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private $header = [];
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private $footer = [];
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function __construct() {
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}
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function appendLine(ReceiptLine $line) {
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$this->lines[] = $line;
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}
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function appendLines($lines) {
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foreach ($lines as $l) {
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$this->lines[] = $l;
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}
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}
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function appendHeader(ReceiptLine $line) {
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$this->header[] = $line;
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}
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function appendFooter(ReceiptLine $line) {
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$this->footer[] = $line;
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}
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function appendBreak() {
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$this->lines[] = new ReceiptLine("", "", "", ReceiptLine::LINEFORMAT_HR);
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}
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function getHtml($title = "") {
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global $SECURE_NONCE;
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$html = <<<END
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<!DOCTYPE html>
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<meta charset="UTF-8">
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<meta name="viewport" content="width=device-width, initial-scale=1">
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<title>$title</title>
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<style nonce="$SECURE_NONCE">
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.flex {
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display: flex;
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justify-content: space-between;
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margin: 0;
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}
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.bold {
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font-weight: bold;
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}
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.centered {
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justify-content: center;
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}
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</style>
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END;
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if (count($this->header) > 0) {
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foreach ($this->header as $line) {
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$html .= $line->getHtml() . "\n";
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}
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$html .= (new ReceiptLine("", "", "", ReceiptLine::LINEFORMAT_HR))->getHtml();
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}
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foreach ($this->lines as $line) {
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$html .= $line->getHtml() . "\n";
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}
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if (count($this->footer) > 0) {
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$html .= (new ReceiptLine("", "", "", ReceiptLine::LINEFORMAT_HR))->getHtml();
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foreach ($this->footer as $line) {
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$html .= $line->getHtml() . "\n";
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}
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}
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return $html;
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}
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function getPlainText($width) {
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$lines = [];
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if (count($this->header) > 0) {
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foreach ($this->header as $line) {
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$lines[] = $line->getPlainText($width);
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}
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$lines[] = (new ReceiptLine("", "", "", ReceiptLine::LINEFORMAT_HR))->getPlainText($width);
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}
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foreach ($this->lines as $line) {
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$lines[] = $line->getPlainText($width);
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}
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if (count($this->footer) > 0) {
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$lines[] = (new ReceiptLine("", "", "", ReceiptLine::LINEFORMAT_HR))->getPlainText($width);
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foreach ($this->footer as $line) {
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$lines[] = $line->getPlainText($width);
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}
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}
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return implode("\n", $lines);
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}
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function getArray($width = 64) {
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$header = [];
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$lines = [];
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$footer = [];
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foreach ($this->header as $line) {
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$header[] = $line->getArray($width);
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}
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foreach ($this->lines as $line) {
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$lines[] = $line->getArray($width);
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}
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foreach ($this->footer as $line) {
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$footer[] = $line->getArray($width);
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}
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return ["header" => $header, "lines" => $lines, "footer" => $footer];
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}
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function getJson($width = 64) {
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return json_encode($this->getArray($width));
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}
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}
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