calm-focus-timer/index.html at main · e35dev/calm-focus-timer · GitHub

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<!doctype html>
<html lang="en">
<head>
<meta charset="utf-8" />
<meta name="viewport" content="width=device-width, initial-scale=1" />
<title>Calm Focus Timer</title>
<style>
  :root{ --bg:#0b0d10; --text:#e9ecef; --muted:#7f8893; --line:#222a33; --panel:#12161b; }
  *{box-sizing:border-box}
  html,body{height:100%}
  body{
    margin:0; background:var(--bg); color:var(--text);
    font:16px/1.4 ui-sans-serif,system-ui,-apple-system,sans-serif;
    display:flex; flex-direction:column; min-height:100vh; -webkit-font-smoothing:antialiased;
  }
  .topbar{display:flex; justify-content:center; padding:22px 16px 0}
  .modes{display:inline-flex; border:1px solid var(--line); border-radius:999px; overflow:hidden}
  .modes button{background:transparent; color:var(--muted); border:0; padding:8px 18px; font-size:13px; letter-spacing:.03em; cursor:pointer}
  .modes button[aria-pressed="true"]{background:var(--panel); color:var(--text)}
  main{flex:1; display:flex; flex-direction:column; align-items:center; justify-content:center; gap:34px; padding:24px}
  .count{font-variant-numeric:tabular-nums; font-weight:300; font-size:clamp(72px, 22vw, 200px); line-height:1; letter-spacing:.01em; transition:opacity .6s ease}
  .count.done{opacity:.45}
  .state{min-height:18px; color:var(--muted); font-size:13px; letter-spacing:.04em; text-transform:lowercase}
  .presets{display:flex; gap:8px; align-items:center; flex-wrap:wrap; justify-content:center}
  .presets button, .controls button{background:transparent; color:var(--text); border:1px solid var(--line); border-radius:8px; padding:10px 16px; font-size:14px; cursor:pointer}
  .presets button[aria-pressed="true"]{border-color:var(--muted); background:var(--panel)}
  .presets input{width:78px; background:transparent; color:var(--text); border:1px solid var(--line); border-radius:8px; padding:10px 12px; font-size:14px; text-align:center}
  .controls{display:flex; gap:10px}
  .controls .primary{min-width:120px; border-color:var(--muted)}
  button:hover{border-color:var(--muted)}
  button:focus-visible, input:focus-visible{outline:2px solid var(--muted); outline-offset:2px}
  footer{padding:0 16px 28px; text-align:center; color:var(--muted); font-size:13px}
</style>
</head>
<body>
  <div class="topbar">
    <div class="modes" role="group" aria-label="Timer mode">
      <button id="mode-focus" aria-pressed="true">Focus</button>
      <button id="mode-break" aria-pressed="false">Break</button>
    </div>
  </div>
  <main>
    <div class="count" id="count" role="timer" aria-live="off">25:00</div>
    <div class="state" id="state" aria-live="polite"></div>
    <div class="presets" id="presets" aria-label="Duration"></div>
    <div class="controls">
      <button class="primary" id="startPause">Start</button>
      <button id="reset">Reset</button>
    </div>
  </main>
  <footer><span id="today">Focus sessions today: 0</span></footer>
<script>
  "use strict";
  const PRESETS = { focus: [25, 50], break: [5, 10] };
  const $ = (id) => document.getElementById(id);

  let mode = "focus";
  let durationSec = 25 * 60;
  let remainingSec = durationSec;
  let endAt = null;
  let ticker = null;
  let completed = false;

  // Local calendar day (not UTC) so evening sessions count toward today.
  function todayKey(){
    const d = new Date();
    const local = d.getFullYear() + "-" + String(d.getMonth() + 1).padStart(2, "0") + "-" + String(d.getDate()).padStart(2, "0");
    return "cft:focus:" + local;
  }
  const getCount = () => Number(localStorage.getItem(todayKey()) || 0);
  const bumpCount = () => localStorage.setItem(todayKey(), String(getCount() + 1));
  const renderCount = () => { $("today").textContent = "Focus sessions today: " + getCount(); };

  function fmt(sec){
    sec = Math.max(0, Math.round(sec));
    const m = Math.floor(sec / 60), s = sec % 60;
    return String(m).padStart(2, "0") + ":" + String(s).padStart(2, "0");
  }
  function renderTime(){ $("count").textContent = fmt(remainingSec); }
  function setState(text){ $("state").textContent = text; }
  function isRunning(){ return ticker !== null; }

  function renderControls(){
    $("startPause").textContent = isRunning() ? "Pause" : (!completed && remainingSec < durationSec ? "Resume" : "Start");
    $("count").classList.toggle("done", completed);
  }

  function buildPresets(){
    const wrap = $("presets");
    wrap.innerHTML = "";
    PRESETS[mode].forEach((min) => {
      const b = document.createElement("button");
      b.textContent = min + " min";
      b.setAttribute("aria-pressed", String(durationSec === min * 60));
      b.onclick = () => chooseDuration(min * 60);
      wrap.appendChild(b);
    });
    const input = document.createElement("input");
    input.type = "number"; input.min = "1"; input.max = "180"; input.placeholder = "custom";
    input.setAttribute("aria-label", "Custom minutes");
    input.oninput = () => {
      const v = Math.max(1, Math.min(180, Math.floor(Number(input.value) || 0)));
      if (v) chooseDuration(v * 60, true);
    };
    wrap.appendChild(input);
  }

  function chooseDuration(sec, fromInput){
    stop();
    durationSec = sec; remainingSec = sec; completed = false;
    setState("");
    renderTime(); renderControls();
    if (!fromInput) buildPresets();
  }

  function tick(){
    remainingSec = (endAt - Date.now()) / 1000;
    if (remainingSec <= 0){ remainingSec = 0; stop(); complete(); }
    renderTime();
  }

  function start(){
    // Fresh or just-completed session: restart the selected duration so Start always works.
    if (remainingSec <= 0){ remainingSec = durationSec; }
    completed = false;
    endAt = Date.now() + remainingSec * 1000;
    ticker = setInterval(tick, 250);
    setState(mode === "focus" ? "focusing" : "on a break");
    renderTime(); renderControls();
  }

  function pause(){
    if (!isRunning()) return;
    remainingSec = (endAt - Date.now()) / 1000;
    stop();
    setState("paused");
    renderTime(); renderControls();
  }

  function stop(){ if (ticker){ clearInterval(ticker); ticker = null; } endAt = null; }

  function reset(){
    stop();
    remainingSec = durationSec; completed = false;
    setState("");
    renderTime(); renderControls();
  }

  function complete(){
    completed = true;
    chime();
    if (mode === "focus"){ bumpCount(); renderCount(); }
    setState(mode === "focus" ? "session complete" : "break complete");
    renderControls();
  }

  function chime(){
    try{
      const Ctx = window.AudioContext || window.webkitAudioContext;
      const ctx = new Ctx();
      [528, 396].forEach((freq, i) => {
        const osc = ctx.createOscillator(), gain = ctx.createGain();
        osc.type = "sine"; osc.frequency.value = freq;
        const t = ctx.currentTime + i * 0.5;
        gain.gain.setValueAtTime(0, t);
        gain.gain.linearRampToValueAtTime(0.12, t + 0.08);
        gain.gain.exponentialRampToValueAtTime(0.0001, t + 1.6);
        osc.connect(gain); gain.connect(ctx.destination);
        osc.start(t); osc.stop(t + 1.7);
      });
    }catch(e){ /* audio optional; timer still completes */ }
  }

  function switchMode(next){
    if (next === mode) return;
    mode = next;
    $("mode-focus").setAttribute("aria-pressed", String(mode === "focus"));
    $("mode-break").setAttribute("aria-pressed", String(mode === "break"));
    chooseDuration(PRESETS[mode][0] * 60);
  }

  $("mode-focus").onclick = () => switchMode("focus");
  $("mode-break").onclick = () => switchMode("break");
  $("startPause").onclick = () => (isRunning() ? pause() : start());
  $("reset").onclick = reset;
  document.addEventListener("keydown", (e) => {
    if (e.code === "Space" && e.target.tagName !== "INPUT"){ e.preventDefault(); isRunning() ? pause() : start(); }
  });

  buildPresets(); renderTime(); renderControls(); renderCount();
</script>
</body>
</html>