From 0fe9535df166e8a1865f86e27942a54c40e97dbc Mon Sep 17 00:00:00 2001
From: Paul Kilmurray <paul@kilbot.com>
Date: Sun, 14 Jan 2024 19:03:33 +0100
Subject: [PATCH] add amount tendered and change to checkout and receipt

---
 includes/Gateways/Cash.php | 60 ++++++++++++++++++++++++++++++--------
 readme.txt                 |  5 ++++
 templates/receipt.php      | 18 ++++++++++++
 3 files changed, 71 insertions(+), 12 deletions(-)

diff --git a/includes/Gateways/Cash.php b/includes/Gateways/Cash.php
index b77454a..3709c1e 100644
--- a/includes/Gateways/Cash.php
+++ b/includes/Gateways/Cash.php
@@ -1,5 +1,4 @@
 <?php
-
 /**
  * Provides a Cash Payment Gateway.
  *
@@ -16,6 +15,9 @@
 use WC_Order_Item_Fee;
 use WC_Payment_Gateway;
 
+/**
+ *
+ */
 class Cash extends WC_Payment_Gateway {
 	/**
 	 * Constructor for the gateway.
@@ -55,6 +57,11 @@ public static function payment_details( WC_Order $order ) {
 	 * Display the payment fields on the checkout modal.
 	 */
 	public function payment_fields(): void {
+		global $wp;
+
+		$order_id = isset( $wp->query_vars['order-pay'] ) ? $wp->query_vars['order-pay'] : null;
+		$order = $order_id ? wc_get_order( $order_id ) : null;
+
 		if ( $this->description ) {
 			echo '<p>' . wp_kses_post( $this->description ) . '</p>';
 		}
@@ -70,16 +77,45 @@ public function payment_fields(): void {
 		}
 
 		echo '
-      <div class="form-row" id="pos-cash-tendered_field">
-        <label for="pos-cash-tendered" class="">' . __( 'Amount Tendered', 'woocommerce-pos' ) . '</label>
-        <div class="input-group">
-        ' . $left_addon . '
-          <input type="text" class="form-control" name="pos-cash-tendered" id="pos-cash-tendered" maxlength="20" data-numpad="cash" data-label="' . __( 'Amount Tendered', 'woocommerce-pos' ) . '" data-placement="bottom" data-value="{{total}}">
-        ' . $right_addon . '
-        </div>
-        ' . wp_nonce_field( 'pos_cash_payment_nonce', 'pos_cash_payment_nonce_field' ) . '
-      </div>
+		<div class="form-row" id="pos-cash-tendered_field" style="display: flex; justify-content: space-between;">
+			<div style="flex: 1;">
+				<label for="pos-cash-tendered" style="padding-left:0">' . __( 'Amount Tendered', 'woocommerce-pos' ) . '</label>
+				<div class="input-group">
+					' . $left_addon . '
+					<input type="text" class="form-control" name="pos-cash-tendered" id="pos-cash-tendered" maxlength="20" data-numpad="cash" data-label="' . __( 'Amount Tendered', 'woocommerce-pos' ) . '" data-placement="bottom" data-value="{{total}}">
+					' . $right_addon . '
+				</div>
+			</div>
+			<div style="flex: 1;">
+				<label style="padding-left:0">' . __( 'Change', 'woocommerce-pos' ) . '</label>
+				<div id="pos-cash-change-display"></div>
+			</div>
+			' . wp_nonce_field( 'pos_cash_payment_nonce', 'pos_cash_payment_nonce_field' ) . '
+		</div>
     ';
+
+		if ( $order && $order->get_total() > 0 ) {
+			echo '
+				<script>
+				document.addEventListener("DOMContentLoaded", function() {
+						var tenderedInput = document.getElementById("pos-cash-tendered");
+						var changeDisplay = document.getElementById("pos-cash-change-display");
+
+						tenderedInput.addEventListener("input", function() {
+								var tenderedAmount = parseFloat(tenderedInput.value);
+								var orderTotal = ' . json_encode( wc_format_decimal( $order->get_total() ) ) . '; // Get order total from PHP
+								var change = tenderedAmount - orderTotal;
+
+								if (change > 0) {
+										changeDisplay.innerHTML = change.toFixed(' . json_encode( wc_get_price_decimals() ) . ');
+								} else {
+										changeDisplay.innerHTML = "";
+								}
+						});
+				});
+				</script>
+			';
+		}
 	}
 
 	/**
@@ -102,8 +138,8 @@ public function process_payment( $order_id ): array {
 			$tendered = wc_format_decimal( wp_unslash( $_POST['pos-cash-tendered'] ) );
 		}
 		$change = $tendered > $order->get_total() ? wc_format_decimal( floatval( $tendered ) - floatval( $order->get_total() ) ) : '0';
-		update_post_meta( $order_id, '_pos_cash_amount_tendered', $tendered );
-		update_post_meta( $order_id, '_pos_cash_change', $change );
+		$order->update_meta_data( '_pos_cash_amount_tendered', $tendered );
+		$order->update_meta_data( '_pos_cash_change', $change );
 
 		if ( $tendered >= $order->get_total() ) {
 			// payment complete
diff --git a/readme.txt b/readme.txt
index 0f75d50..9307193 100644
--- a/readme.txt
+++ b/readme.txt
@@ -63,6 +63,11 @@ There is more information on our website at [https://wcpos.com](https://wcpos.co
 
 == Changelog ==
 
+= 1.4.5 - 2024/01/14 =
+* Add: show change in checkout modal and receipt for the Cash gateway
+* Add: use 'medium' sized product image instead of 'thumbnail'
+* Fix: compatibility with alternative login urls, eg: WPS Hide Login
+
 = 1.4.4 - 2024/01/12 =
 * Desktop App: fix login for Desktop Application v1.4.0
 
diff --git a/templates/receipt.php b/templates/receipt.php
index 541a32c..874b889 100644
--- a/templates/receipt.php
+++ b/templates/receipt.php
@@ -263,6 +263,24 @@
 				<th colspan="3"><?php esc_html_e( 'Total', 'woocommerce' ); ?></th>
 				<td><?php echo wp_kses_post( wc_price( $order->get_total() ) ); ?></td>
 			</tr>
+			<?php if ( $order->get_payment_method() === 'pos_cash' ) : ?>
+					<?php
+						$amount_tendered = $order->get_meta( '_pos_cash_amount_tendered' );
+						$change_given    = $order->get_meta( '_pos_cash_change' );
+					?>
+					<?php if ( ! empty( $amount_tendered ) ) : ?>
+						<tr>
+							<th colspan="3"><?php esc_html_e( 'Amount Tendered', 'woocommerce-pos' ); ?></th>
+							<td><?php echo wp_kses_post( wc_price( $amount_tendered ) ); ?></td>
+						</tr>
+					<?php endif; ?>
+					<?php if ( ! empty( $change_given ) ) : ?>
+						<tr>
+							<th colspan="3"><?php esc_html_e( 'Change', 'woocommerce-pos' ); ?></th>
+							<td><?php echo wp_kses_post( wc_price( $change_given ) ); ?></td>
+						</tr>
+					<?php endif; ?>
+			<?php endif; ?>
 		</tfoot>
 	</table>