/*
Unused
Listen for messages from the page.
If the message was from the page script, show an alert.

window.addEventListener("message", function(event) {
  if (event.source == window &&
      event.data.direction &&
      event.data.direction == "from-page-script") {
    alert("Content script received message: \"" + event.data.message + "\"");
  }
});
*/

function handleMoonslicer(message) {
  var result = message.querySelector('div.sheet-result')

  var rx = /">([0-9]+)<\/span>/ 
  var h0str = result.children[0].children[0].children[0].getAttribute("title");
  var h1str = result.children[2].children[0].children[0].getAttribute("title");
  var hit0 = Number(h0str.match(rx)[1]);
  var hit1 = Number(h1str.match(rx)[1]);

  var input_area = document.getElementById('textchat-input');
  var textarea = input_area.querySelector("textarea");
  var submit_button = input_area.querySelector("button.btn");
  console.log('Hit0: ' + hit0 + ' Hit1: ' + hit1);

  var old_text = textarea.value;
  if (hit0 == 20 || hit1 == 20) {
    textarea.value = "&{template:desc} {{desc=20! +[[1d6]] ice}}";
    submit_button.click();
  }
  if (hit0 == 19 || hit1 == 19) {
    textarea.value = "&{template:desc} {{desc=19! +[[1d4]] ice}}";
    submit_button.click();
  }
  if (hit0 == 2 || hit1 == 2) {
    textarea.value = "&{template:desc} {{desc=2! [[floor(1d4/2)]] ice to self}}";
    submit_button.click();
  } 
  if (hit0 == 1 || hit1 == 1) {
    textarea.value = "&{template:desc} {{desc=1! [[1d6]] ice to self}}";
    submit_button.click();
  }
  textarea.value = old_text;
}

/*
Send a message to the page script.
*/
function newMessageHandler(event) {
  var message = event.target;
  
  if (message.classList.contains('you')) {
    var labelElem = message.querySelector('div.sheet-rolltemplate-atk div.sheet-label');
    var label = labelElem.querySelector('span a');
    if (label && label.innerHTML == 'Moonslicer') {
        handleMoonslicer(message);
    };
  };
}

/*
Add messagePageScript() as a listener to click events on
the "from-content-script" element.
*/
var textchat = document.getElementById("textchat");
var content = textchat.getElementsByClassName("content")[0];
content.addEventListener("DOMNodeInserted", newMessageHandler);