Orion iOS Eruda Console Toggle

Adds a draggable button and keyboard toggle to open/close Eruda console in Orion browser on iOS.
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// ==UserScript==
// @name         Orion iOS Eruda Console Toggle
// @namespace    https://littlelooney.example/orion-eruda
// @version      2026-05-24.1
// @description  Adds a draggable button and keyboard toggle to open/close Eruda console in Orion browser on iOS.
// @author       LittleLooney + OpenAI
// @match        *://*/*
// @require      https://cdn.jsdelivr.net/npm/[email protected]/eruda.min.js
// @grant        none
// @run-at       document-idle
// ==/UserScript==

(() => {
  'use strict';

  const STORAGE_KEY = 'orion-eruda-toggle-position';
  const BTN_ID = 'orion-eruda-toggle-btn';
  let erudaReady = false;
  let erudaVisible = false;

  function loadPosition() {
    try {
      const saved = JSON.parse(localStorage.getItem(STORAGE_KEY) || '{}');
      if (typeof saved.left === 'number' && typeof saved.top === 'number') return saved;
    } catch {
      // ignore broken storage
    }
    return { left: 14, top: 86 };
  }

  function savePosition(left, top) {
    localStorage.setItem(STORAGE_KEY, JSON.stringify({ left, top }));
  }

  function clamp(value, min, max) {
    return Math.min(Math.max(value, min), max);
  }

  function updateButtonStyle(btn, pos) {
    const maxLeft = Math.max(8, window.innerWidth - btn.offsetWidth - 8);
    const maxTop = Math.max(8, window.innerHeight - btn.offsetHeight - 8);
    const left = clamp(pos.left, 8, maxLeft);
    const top = clamp(pos.top, 8, maxTop);
    btn.style.left = `${left}px`;
    btn.style.top = `${top}px`;
    savePosition(left, top);
  }

  function ensureEruda() {
    if (!window.eruda) {
      throw new Error('Eruda library is unavailable. Orion may have blocked @require loading.');
    }
    if (!erudaReady) {
      window.eruda.init();
      window.eruda.hide();
      erudaReady = true;
      erudaVisible = false;
    }
  }

  function setButtonState(btn, text) {
    btn.textContent = text;
    btn.setAttribute('aria-label', text);
  }

  function toggleEruda(btn) {
    btn.disabled = true;
    try {
      ensureEruda();
      erudaVisible = !erudaVisible;
      if (erudaVisible) {
        window.eruda.show();
        setButtonState(btn, 'Console: ON');
      } else {
        window.eruda.hide();
        setButtonState(btn, 'Console: OFF');
      }
    } catch (err) {
      console.error('[Orion Eruda]', err);
      setButtonState(btn, 'Console: ERR');
      setTimeout(() => setButtonState(btn, erudaVisible ? 'Console: ON' : 'Console: OFF'), 1600);
    } finally {
      btn.disabled = false;
    }
  }

  function makeDraggable(btn) {
    let dragging = false;
    let moved = false;
    let startX = 0;
    let startY = 0;
    let originLeft = 0;
    let originTop = 0;

    const onMove = (clientX, clientY) => {
      if (!dragging) return;
      const dx = clientX - startX;
      const dy = clientY - startY;
      moved = moved || Math.abs(dx) > 4 || Math.abs(dy) > 4;
      updateButtonStyle(btn, { left: originLeft + dx, top: originTop + dy });
    };

    btn.addEventListener('touchstart', (e) => {
      const t = e.touches[0];
      if (!t) return;
      dragging = true;
      moved = false;
      startX = t.clientX;
      startY = t.clientY;
      originLeft = parseFloat(btn.style.left) || 0;
      originTop = parseFloat(btn.style.top) || 0;
    }, { passive: true });

    btn.addEventListener('touchmove', (e) => {
      const t = e.touches[0];
      if (!t) return;
      onMove(t.clientX, t.clientY);
    }, { passive: true });

    btn.addEventListener('touchend', () => {
      dragging = false;
    }, { passive: true });

    btn.addEventListener('mousedown', (e) => {
      dragging = true;
      moved = false;
      startX = e.clientX;
      startY = e.clientY;
      originLeft = parseFloat(btn.style.left) || 0;
      originTop = parseFloat(btn.style.top) || 0;
      e.preventDefault();
    });

    window.addEventListener('mousemove', (e) => onMove(e.clientX, e.clientY));
    window.addEventListener('mouseup', () => {
      dragging = false;
    });

    btn.addEventListener('click', (e) => {
      if (moved) {
        e.preventDefault();
        e.stopPropagation();
        moved = false;
        return;
      }
      toggleEruda(btn);
    });
  }

  function attachKeyboardShortcut(btn) {
    window.addEventListener('keydown', (e) => {
      if (e.altKey && e.key.toLowerCase() === 'd') {
        e.preventDefault();
        toggleEruda(btn);
      }
    });
  }

  function injectUi() {
    if (document.getElementById(BTN_ID)) return;

    const btn = document.createElement('button');
    btn.id = BTN_ID;
    btn.type = 'button';
    setButtonState(btn, 'Console: OFF');
    btn.title = 'Tap to toggle Eruda console. Drag to move. Keyboard: Alt + D';

    Object.assign(btn.style, {
      position: 'fixed',
      zIndex: '2147483647',
      padding: '10px 12px',
      borderRadius: '12px',
      border: '1px solid rgba(255,255,255,0.25)',
      background: 'rgba(16,16,20,0.85)',
      color: '#f5f5f5',
      fontFamily: '-apple-system, BlinkMacSystemFont, Segoe UI, sans-serif',
      fontSize: '13px',
      fontWeight: '600',
      boxShadow: '0 6px 24px rgba(0,0,0,0.25)',
      backdropFilter: 'blur(5px)',
      WebkitBackdropFilter: 'blur(5px)',
      cursor: 'pointer',
      userSelect: 'none',
      WebkitUserSelect: 'none',
      opacity: '0.95',
    });

    const saved = loadPosition();
    document.documentElement.appendChild(btn);
    updateButtonStyle(btn, saved);

    makeDraggable(btn);
    attachKeyboardShortcut(btn);

    window.addEventListener('resize', () => {
      updateButtonStyle(btn, {
        left: parseFloat(btn.style.left) || 8,
        top: parseFloat(btn.style.top) || 8,
      });
    });
  }

  if (document.readyState === 'loading') {
    document.addEventListener('DOMContentLoaded', injectUi, { once: true });
  } else {
    injectUi();
  }
})();