--- /dev/null
+const API = "https://families.cworth.org/api/";
+
+function undisplay(element) {
+ element.style.display="none";
+}
+
+function add_message(severity, message) {
+ message = `<div class="message ${severity}" onclick="undisplay(this)">
+${message}
+<span class="hide-button" onclick="undisplay(this.parentElement)">×</span>
+</div>`;
+ const message_area = document.getElementById('message-area');
+ message_area.insertAdjacentHTML('beforeend', message);
+}
+
+function register(form) {
+ var request = new XMLHttpRequest();
+
+ request.open("POST", API + "register");
+ request.setRequestHeader("Content-Type", "application/json; charset=UTF-8");
+ var data = {
+ "name": form.name.value,
+ "character": form.character.value
+ };
+ request.send(JSON.stringify(data));
+
+ form.reset();
+}
+
+function toggle_host_tools() {
+ const host_tools = document.getElementById("host-tools");
+
+ console.log("Toggling, host_tools.style.display is '" + host_tools.style.display + "'");
+
+ if (host_tools.style.display === "block")
+ host_tools.style.display = "none";
+ else
+ host_tools.style.display = "block";
+}
+
+function post_reveal() {
+ const request = new XMLHttpRequest();
+
+ request.open("POST", API + "reveal");
+ request.send();
+}
+
+function post_start() {
+ const request = new XMLHttpRequest();
+
+ request.open("POST", API + "start");
+ request.send();
+}
+
+function post_reset() {
+ const request = new XMLHttpRequest();
+
+ request.open("POST", API + "reset");
+ request.send();
+}
+
+const events = new EventSource(API + "events");
+
+events.onerror = function(event) {
+ if (event.target.readyState === EventSource.CLOSED) {
+ add_message("danger", "Connection to server lost.");
+ }
+};
+
+events.addEventListener("players", function(event) {
+ const players_div = document.getElementById("players-div");
+ const players_element = document.getElementById("players");
+ const players = JSON.parse(event.data);
+
+ players_element.innerHTML = '';
+ for (const player of players) {
+ var li = document.createElement('li');
+ li.id = "player-" + player.id;
+ li.innerText = player.name;
+ players_element.appendChild(li);
+ }
+
+ /* Force players list to be visible. */
+ players_div.style.display = "block";
+});
+
+events.addEventListener("player-join", function(event) {
+ const players_div = document.getElementById("players-div");
+ const players = document.getElementById("players");
+ const player = JSON.parse(event.data);
+
+ const li = document.createElement('li');
+ li.id = "player-" + player.id;
+ li.innerText = player.name;
+ players.appendChild(li);
+
+ /* Force players list to be visible. */
+ players_div.style.display = "block";
+});
+
+events.addEventListener("player-leave", function(event) {
+ const players = document.getElementById("players");
+ const id = JSON.parse(event.data);
+ const player = document.getElementById("player-" + id.id);
+
+ add_message("info", player.innerText + " has left the game.");
+ players.removeChild(player);
+});
+
+events.addEventListener("game-state", function(event) {
+ const data = JSON.parse(event.data);
+ const old_state = data.old_state;
+ const new_state = data.new_state;
+
+ const hide_selector = ".show-state-" +old_state+ ",.hide-state-" +new_state;
+ const show_selector = ".hide-state-" +old_state+ ",.show-state-" +new_state;
+
+ /* Hide all elements based on the state transition. */
+ var elts = document.querySelectorAll(hide_selector);
+ for (const elt of elts) {
+ elt.style.display = "none";
+ }
+
+ /* And show all elements based on the same state transition. */
+ elts = document.querySelectorAll(show_selector);
+ for (const elt of elts) {
+ elt.style.display = "block";
+ }
+});
+
+events.addEventListener("character-reveal", function(event) {
+ const data = JSON.parse(event.data);
+ const character_name = data.character;
+
+ const character = document.getElementById("character-reveal");
+
+ character.innerText = character_name;
+});
+
+events.addEventListener("capture", function(event_string) {
+ const players = document.getElementById("players");
+ const event = JSON.parse(event_string.data);
+ const player = document.getElementById("player-" + event.captee);
+
+ players.removeChild(player);
+});