forge/ModGUI.js

function displayGui(ModApi) {
  function gui(ModAPI) {
    if (document.querySelector("#eaglerpl_gui")) {
      document.querySelector("#eaglerpl_gui").remove();
    }
    localStorage.setItem(
      "ml::Mods",
      localStorage.getItem("ml::Mods") || "[]"
    );
    try {
      localStorage.setItem(
        "ml::Mods",
        JSON.stringify(JSON.parse(localStorage.getItem("ml::Mods")))
      );
    } catch (error) {
      localStorage.setItem("ml::Mods", "[]");
    }
    var Mods = JSON.parse(localStorage.getItem("ml::Mods"));
    var container = document.createElement("div");
    container.id = "eaglerpl_gui";
    container.style = `width:100%; height: 100%; position: fixed; top: 0; left: 0; z-index: 10; color: white; font-family: Minecraftia, sans-serif; overflow-y: scroll; overflow-x: hidden; background-image: url(data:image/png;base64,UklGRhoBAABXRUJQVlA4TA0BAAAvn8AnAIWjtpEECdnA2N0DsTROy7xUqfrWw0jbyLkJKTz0+I20jTT/Bo89e1YR/Wfktm0Y+wNKLobT7QP/n/B7Z/naW26QHoTpHB7LFouyKHlzeHxfCStSuj9KdbC8z1IJ5iWiyQed48vtYJ+lUu0t4VwranS1XMIutSiLYlbb8G54uf2p3VPSfRZtSrlsPFjOzZZrd/us3B3uK+HcHJQql+xbLMrS/WqNpm6DeZ/VIPVYaN/KzUbp91nd9xl5pYu50dU2W417nbdTj5l2Ne92uM9qXNpyf6+oXkabHKXaZ1HS4Iaqpim+1KIJ+0M49/LjNbTGP5mrrMZEuc7Uzcb1ViOJ6TuOt4NGJs+zDgA=); background-color: rgb(60,60,60); background-blend-mode: multiply; background-size: 64px;`;
    var title = document.createElement("h1");
    title.style = "text-shadow: 0px 0px 4px;";
    title.innerHTML = "Mod Manager";
    var closeButton = document.createElement("a");
    closeButton.style = `margin-left: 2rem; color: red;`;
    closeButton.href = "javascript:void(0)";
    closeButton.addEventListener("click", () => {
      document.querySelector("#eaglerpl_gui").remove();
    });
    closeButton.innerHTML = "[X]";
    title.appendChild(closeButton);
    container.appendChild(title);

    var warningPoster = document.createElement("p");
    warningPoster.style = "font-size: 0.8rem; color: orangered;";
    warningPoster.innerHTML =
      "Warning: Installing Mods gives them full control over the game. Be cautious when installing them.<br>Mods that have been removed also need a reload to stop running in the background.";
    container.appendChild(warningPoster);

    var tipPoster = document.createElement("p");
    tipPoster.style = "font-size: 0.8rem; color: yellow;";
    tipPoster.innerHTML =
      "Tip: if the mods say that they failed loading, try refreshing the gui";
    container.appendChild(tipPoster);

    var table = document.createElement("table");
    table.style = "table-layout: fixed; width: 100%";
    var headerRow = document.createElement("tr");
    headerRow.style = "background: rgb(50,50,50);";
    var urlBox = document.createElement("th");
    urlBox.style = "text-align: center;";
    urlBox.innerHTML = "URL";
    headerRow.appendChild(urlBox);
    var statusBox = document.createElement("th");
    statusBox.style = "text-align: center; width: 15%;";
    statusBox.innerHTML = "Status";
    headerRow.appendChild(statusBox);
    table.appendChild(headerRow);

    Mods.forEach((url) => {
      var row = document.createElement("tr");
      row.style = `box-shadow: 0px 2px 0px grey;`;
      var urlBox = document.createElement("td");
      urlBox.style = "user-select: text;";
      var textWrapper = document.createElement("div");
      textWrapper.style = `max-width: 100%; overflow-wrap: anywhere; max-height: 3rem; overflow-y: scroll;`;
      textWrapper.innerText = url;
      urlBox.append(textWrapper);
      row.appendChild(urlBox);
      var statusBox = document.createElement("td");
      statusBox.innerHTML = ((curl) => {
        var targs = document.querySelectorAll("script[data-Mod]");
        for (let i = 0; i < targs.length; i++) {
          const elem = targs[i];
          if (elem.getAttribute("data-Mod") === curl) {
            return "LOADED";
          }
        }
        return "FAILED";
      })(url);
      switch (statusBox.innerHTML) {
        case "LOADED":
          statusBox.style = "background-color: green; text-align: center;";
          break;
        case "FAILED":
          statusBox.style = "background-color: dimgrey; text-align: center;";
          break;
        default:
          break;
      }
      var binBtn = document.createElement("button");
      binBtn.style =
        "background: transparent; text-align: center; color: yellow; cursor: pointer; font-family: 'Minecraftia', sans-serif; text-decoration: underline; border: 0; margin-left: 1rem; font-size: 1rem;";
      binBtn.innerHTML = "[X]";
      binBtn.addEventListener("click", () => {
        if (!window.confirm("Delete Mod?") || Mods.indexOf(url) === -1) {
          return;
        }
        Mods.splice(Mods.indexOf(url), 1);
        localStorage.setItem("ml::Mods", JSON.stringify(Mods));
        gui();
      });
      statusBox.appendChild(binBtn);
      row.appendChild(statusBox);
      table.appendChild(row);
    });

    var addBtn = document.createElement("button");
    addBtn.style =
      "background: transparent; text-align: center; color: yellow; cursor: pointer; font-family: 'Minecraftia', sans-serif; text-decoration: underline; border: 0; margin-right: 1rem;  font-size: 1rem;";
    addBtn.innerHTML = "Add new";
    addBtn.addEventListener("click", () => {
      var newMod = window.prompt("URL of Mod: ", "http://example.com/example.js");
      if (!newMod) {
        return; //User pressed cancel
      }
      Mods.push(
        newMod
      );
      localStorage.setItem("ml::Mods", JSON.stringify(Mods));
      if(window.ModLoader){
        ModLoader([newMod]);
      }
      gui();
    });

    var uploadBtn = document.createElement("button");
    uploadBtn.style =
      "background: transparent; text-align: center; color: yellow; cursor: pointer; font-family: 'Minecraftia', sans-serif; text-decoration: underline; border: 0;  font-size: 1rem;";
    uploadBtn.innerHTML = "Upload...";
    uploadBtn.addEventListener("click", function uploadBtnListener() {
      var filePicker = document.createElement("input");
      filePicker.type = "file";
      filePicker.accept = ".js";
      filePicker.addEventListener("input", function onInput() {
        if (filePicker.files[0]) {
          var reader = new FileReader();
          reader.addEventListener("load", function onModRead() {
            var newMod = reader.result.replace(";base64", `;fs=${encodeURIComponent(filePicker.files[0].name) || "unknown"};base64`);
            Mods.push(newMod);
            localStorage.setItem("ml::Mods", JSON.stringify(Mods));
            if(window.ModLoader){
              ModLoader([newMod]);
            }
            gui();
          });
          reader.readAsDataURL(filePicker.files[0]);
        }
      });
      filePicker.click();
    });

    container.appendChild(table);
    container.appendChild(addBtn);
    container.appendChild(uploadBtn);

    var notice = document.createElement("a");
    notice.innerHTML = "Refresh GUI";
    notice.href = "javascript:void(0)";
    notice.addEventListener("click", function reloadListener() {
      setTimeout(gui, 500);
      this.remove();
    });
    notice.style =
      "color: yellow; display: block; margin-top: 2rem; width: 0; white-space: nowrap;";
    container.appendChild(notice);
    ModAPI.events.callEvent("gui", {});
    document.body.appendChild(container);
  }
  gui(ModApi);
}