Ticketing updates

- Bugfix: Prevent tickets from being assigned to disabled techs
- Bugfix: Un-assign all open tickets when a tech account is disabled
- Allow auto-assignment of recurring/scheduled tickets to an agent/tech (#901)
- Rework layout of recurring/scheduled ticket modal

js/recurring_tickets_add_modal.js

@@ -0,0 +1,64 @@
+// Client selected listener
+//  We seem to have to use jQuery to listen for events, as the client input is a select2 component?
+
+const clientSelectDropdown = document.getElementById("changeClientSelect"); // Define client selector
+
+// If the client selector is disabled, we must be on client_recurring_tickets.php instead. Trigger the contact list update.
+if (clientSelectDropdown.disabled) {
+
+    let client_id = $(clientSelectDropdown).find(':selected').val();
+
+    // Update the contacts dropdown list
+    populateContactsDropdown(client_id);
+
+}
+
+// Listener for client selection. Populate contact select when a client is selected
+$(clientSelectDropdown).on('select2:select', function (e) {
+    let client_id = $(this).find(':selected').val();
+
+    // Update the contacts dropdown list
+    populateContactsDropdown(client_id);
+
+    // TODO: Update the assets dropdown list
+
+});
+
+// Populate client contact function (after a client is selected)
+function populateContactsDropdown(client_id) {
+    // Send a GET request to ajax.php as ajax.php?get_client_contacts=true&client_id=NUM
+    jQuery.get(
+        "ajax.php",
+        {get_client_contacts: 'true', client_id: client_id},
+        function(data) {
+
+            // If we get a response from ajax.php, parse it as JSON
+            const response = JSON.parse(data);
+
+            // Access the data for contacts (multiple)
+            const contacts = response.contacts;
+
+            // Contacts dropdown
+            const contactSelectDropdown = document.getElementById("contactSelect");
+
+            // Clear Category dropdown
+            let i, L = contactSelectDropdown.options.length - 1;
+            for (i = L; i >= 0; i--) {
+                contactSelectDropdown.remove(i);
+            }
+            contactSelectDropdown[contactSelectDropdown.length] = new Option('- Contact -', '0');
+
+            // Populate dropdown
+            contacts.forEach(contact => {
+                var appendText = "";
+                if (contact.contact_primary == "1") {
+                    appendText = " (Primary)";
+                } else if (contact.contact_technical == "1") {
+                    appendText = " (Technical)";
+                }
+                contactSelectDropdown[contactSelectDropdown.length] = new Option(contact.contact_name + appendText, contact.contact_id);
+            });
+
+        }
+    );
+}