API: Add some missing end points

api/v1/invoices/update.php

@@ -0,0 +1,31 @@
+<?php
+
+require_once '../validate_api_key.php';
+
+require_once '../require_post_method.php';
+
+// Parse ID
+$invoice_id = intval($_POST['invoice_id']);
+
+// Default
+$update_count = false;
+
+if (!empty($invoice_id)) {
+
+    $invoice_row = mysqli_fetch_assoc(mysqli_query($mysqli, "SELECT * FROM invoices WHERE invoice_id = '$invoice_id' AND invoice_client_id LIKE '$client_id' LIMIT 1"));
+
+    require_once 'invoice_model.php';
+
+    $update_sql = mysqli_query($mysqli, "UPDATE invoices SET invoice_date = '$date', invoice_due_date = '$due_date', invoice_notes = '$notes', invoice_footer = '$footer', invoice_currency_code = '$currency_code' WHERE invoice_id = $invoice_id AND invoice_client_id LIKE '$client_id' LIMIT 1");
+
+    if ($update_sql) {
+        $update_count = mysqli_affected_rows($mysqli);
+
+        // Logging
+        logAction("Invoice", "Edit", "Invoice $invoice_id via API ($api_key_name)", $client_id);
+        logAction("API", "Success", "Edited invoice $invoice_id via API ($api_key_name)", $client_id);
+    }
+}
+
+// Output
+require_once '../update_output.php';