User:Stumblean/common.js

(function () {
  // Utility function for constraining position within viewport
  function constrainPosition(x, y, width, height) {
    const winWidth = window.innerWidth;
    const winHeight = window.innerHeight;
    if (x < 0) x = 0;
    if (y < 0) y = 0;
    if (x + width > winWidth) x = winWidth - width;
    if (y + height > winHeight) y = winHeight - height;
    return [x, y];
  }

  // Create toggle button with image icon
  const toggle = document.createElement("button");
  toggle.id = "delta-toggle";
  Object.assign(toggle.style, {
    position: "fixed",
    bottom: "20px",
    right: "20px",
    padding: "0",
    background: "#2b2b2b",
    border: "none",
    borderRadius: "12px",
    zIndex: 9998,
    cursor: "move", // show move cursor to indicate draggable
    userSelect: "none",
    touchAction: "none",
  });

  const icon = document.createElement("img");
  icon.src = "https://files.catbox.moe/uodscw.png";
  icon.alt = "Delta";
  Object.assign(icon.style, {
    width: "48px",
    height: "48px",
    borderRadius: "12px",
    display: "block",
    pointerEvents: "none", // so dragging the button works smoothly
  });
  toggle.appendChild(icon);

  // Create Delta menu
  const menu = document.createElement("div");
  menu.id = "delta-menu";
  Object.assign(menu.style, {
    display: "none",
    position: "fixed",
    bottom: "80px",
    right: "20px",
    width: "300px",
    background: "#2b2b2b",
    color: "#fff",
    borderRadius: "10px",
    padding: "15px",
    boxShadow: "0 0 10px rgba(0,0,0,0.5)",
    zIndex: 9999,
    fontFamily: "monospace",
    cursor: "move",
    userSelect: "none",
    touchAction: "none",
  });

  const title = document.createElement("div");
  title.textContent = "Delta Online";
  Object.assign(title.style, {
    textAlign: "center",
    fontSize: "18px",
    marginBottom: "10px",
    userSelect: "text",
    cursor: "default",
  });

  const textarea = document.createElement("textarea");
  textarea.placeholder = "Enter JavaScript...";
  Object.assign(textarea.style, {
    width: "100%",
    height: "120px",
    background: "#1e1e1e",
    color: "#fff",
    border: "none",
    borderRadius: "6px",
    padding: "10px",
    resize: "none",
    boxSizing: "border-box",
    cursor: "auto",
    userSelect: "text",
  });

  const runBtn = document.createElement("button");
  runBtn.textContent = "Run Code";
  Object.assign(runBtn.style, {
    marginTop: "10px",
    width: "100%",
    padding: "10px",
    background: "#4caf50",
    color: "#fff",
    border: "none",
    borderRadius: "6px",
    cursor: "pointer",
  });

  runBtn.onclick = () => {
    try {
      eval(textarea.value);
    } catch (e) {
      alert("Error: " + e.message);
    }
  };

  // Toggle menu visibility when clicking toggle button
  toggle.onclick = () => {
    menu.style.display = menu.style.display === "none" ? "block" : "none";
  };

  // Generic drag handlers for mouse and touch
  function makeDraggable(element, excludeElements = []) {
    let isDragging = false;
    let dragStartX = 0;
    let dragStartY = 0;
    let elemStartLeft = 0;
    let elemStartTop = 0;

    function onDragStart(x, y, target) {
      // Ignore drag if started on excluded elements inside container
      if (excludeElements.includes(target)) return false;
      isDragging = true;
      dragStartX = x;
      dragStartY = y;
      const rect = element.getBoundingClientRect();
      elemStartLeft = rect.left;
      elemStartTop = rect.top;
      return true;
    }

    function onDragMove(x, y) {
      if (!isDragging) return;
      let newLeft = elemStartLeft + (x - dragStartX);
      let newTop = elemStartTop + (y - dragStartY);
      [newLeft, newTop] = constrainPosition(
        newLeft,
        newTop,
        element.offsetWidth,
        element.offsetHeight
      );
      element.style.left = newLeft + "px";
      element.style.top = newTop + "px";
      element.style.bottom = "auto";
      element.style.right = "auto";
    }

    function onDragEnd() {
      isDragging = false;
    }

    // Mouse events
    element.addEventListener("mousedown", (e) => {
      if (!onDragStart(e.clientX, e.clientY, e.target)) return;
      e.preventDefault();
    });
    document.addEventListener("mousemove", (e) => onDragMove(e.clientX, e.clientY));
    document.addEventListener("mouseup", onDragEnd);

    // Touch events
    element.addEventListener("touchstart", (e) => {
      if (!e.touches || !e.touches[0]) return;
      if (!onDragStart(e.touches[0].clientX, e.touches[0].clientY, e.target)) return;
      e.preventDefault();
    });
    document.addEventListener(
      "touchmove",
      (e) => {
        if (!e.touches || !e.touches[0]) return;
        onDragMove(e.touches[0].clientX, e.touches[0].clientY);
      },
      { passive: false }
    );
    document.addEventListener("touchend", onDragEnd);
    document.addEventListener("touchcancel", onDragEnd);
  }

  // Apply draggable to both toggle button and menu
  // For menu, exclude textarea and runBtn from drag start
  makeDraggable(toggle);
  makeDraggable(menu, [textarea, runBtn]);

  // Assemble menu content
  menu.appendChild(title);
  menu.appendChild(textarea);
  menu.appendChild(runBtn);
  document.body.appendChild(toggle);
  document.body.appendChild(menu);
})();