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<!DOCTYPE html>
<html lang="en">
<head>
<meta charset="UTF-8">
<meta name="viewport" content="width=device-width, initial-scale=1.0">
<title>gumx / coffee</title>
<link rel="icon" type="image/svg+xml" href="/favicon.svg">
<link rel="stylesheet" href="/styles/main.css">
<link rel="stylesheet" href="/styles/ccc.css">
</head>
<body>
<div id="tooltip"></div>
<div id="popover">
<div class="pop-title" id="pop-title"></div>
<div class="pop-row">
<button id="pop-dec">−</button>
<input type="number" id="pop-input" min="0" max="6">
<button id="pop-inc">+</button>
</div>
<div class="pop-actions">
<button id="pop-set">set</button>
<button id="pop-cancel">cancel</button>
</div>
</div>
<header>
<h1><a href="https://gumx.cc">gumx</a> / coffee</h1>
</header>
<main>
<div id="ccc-intro">
<p>A minimal coffee tracker. Log your daily cups and track your habits. Data lives in your browser — no account needed.</p>
</div>
<div class="heatmap-wrap">
<svg id="heatmap-svg"></svg>
</div>
<div class="legend" id="legend"></div>
<div id="controls" class="controls">
<hr>
<h2>Log</h2>
<div class="row">
<button id="btn-dec-log">−</button>
<span class="count-display" id="log-count-display">1</span>
<button id="btn-inc-log">+</button>
<button id="btn-log">log coffee</button>
</div>
<p class="hint">click any cell to edit that day's count</p>
<hr>
<h2>Data</h2>
<div class="row">
<button id="btn-export">export json</button>
<button id="btn-import-trigger">import json</button>
<input type="file" id="import-input" accept=".json,application/json">
</div>
</div>
<hr>
<h2>Stats</h2>
<ul class="stats-list" id="stats-list">
<li><span class="label">today</span><span class="value" id="stat-today">0 cups</span></li>
<li><span class="label">current streak</span><span class="value" id="stat-streak">0 days</span></li>
<li><span class="label">total cups</span><span class="value" id="stat-total">0</span></li>
<li><span class="label">daily average</span><span class="value" id="stat-avg">0.0</span></li>
</ul>
</main>
<footer>
<hr>
<a href="https://twt.gumx.cc">twt</a> /
<a href="https://git.gumx.cc">git</a> /
<a href="https://mail.gumx.cc">mail</a> /
<a href="https://list.gumx.cc">list</a> /
<a href="https://irc.gumx.cc">irc</a> /
<a href="https://files.gumx.cc">files</a> /
<a href="https://vpn.gumx.cc">vpn</a> /
<a href="https://pgp.gumx.cc">pgp</a> /
<a href="https://demo.gumx.cc">demo</a> /
<a href="https://wk.fo">wk.fo</a>
<br>
<a href="https://git.gumx.cc/ccc">source</a> /
<a href="https://gumx.cc/license">license</a>
</footer>
<script>
// ─────────────────────────────────────────────────────────────
// CONFIG — edit these values to configure the app
// ─────────────────────────────────────────────────────────────
const CONFIG = {
DATA_URL: "data.json", // "" = local mode | "<url>" = static site mode
MAX_CUPS: 5, // maximum cups allowed per day
WEEK_START: 6, // first day of the week: 0=Sun, 1=Mon, 2=Tue, 3=Wed, 4=Thu, 5=Fri, 6=Sat
};
// ─────────────────────────────────────────────────────────────
const STORAGE_KEY = "ccc_v1";
const CELL_SIZE = 10;
const CELL_GAP = 1;
const STEP = CELL_SIZE + CELL_GAP;
const WEEKS = 53;
const DAYS = 7;
const LEFT_OFFSET = 28; // space for day labels
const TOP_OFFSET = 18; // space for month labels
// ── State ─────────────────────────────────────────────────────
let entries = {}; // { "YYYY-MM-DD": count }
let logCount = 1;
let popoverDate = null;
let isStaticMode = CONFIG.DATA_URL !== "";
// ── Date utils ────────────────────────────────────────────────
function toISO(d) {
const y = d.getFullYear();
const m = String(d.getMonth() + 1).padStart(2, "0");
const day = String(d.getDate()).padStart(2, "0");
return `${y}-${m}-${day}`;
}
function todayISO() {
return toISO(new Date());
}
function parseDate(iso) {
const [y, m, d] = iso.split("-").map(Number);
return new Date(y, m - 1, d);
}
function addDays(d, n) {
const r = new Date(d);
r.setDate(r.getDate() + n);
return r;
}
function formatDisplay(iso) {
const d = parseDate(iso);
const opts = {weekday: "short", year: "numeric", month: "short", day: "numeric"};
return d.toLocaleDateString(undefined, opts);
}
// ── Color scale ───────────────────────────────────────────────
function cellLevel(count) {
if (!count || count <= 0) return 0;
if (CONFIG.MAX_CUPS <= 0) return 0;
const ratio = count / CONFIG.MAX_CUPS;
const level = Math.round(ratio * 4);
return Math.min(4, Math.max(1, level));
}
const LEVEL_VARS = ["--cell-0", "--cell-1", "--cell-2", "--cell-3", "--cell-4"];
function getCSSColor(level) {
return `var(${LEVEL_VARS[level]})`;
}
// ── Heatmap ───────────────────────────────────────────────────
function buildHeatmap() {
const svg = document.getElementById("heatmap-svg");
svg.innerHTML = "";
const today = new Date();
today.setHours(0, 0, 0, 0);
const todayStr = toISO(today);
// Grid: column 0 = oldest week, column 52 = current week.
// Rows run from WEEK_START (row 0) to WEEK_START+6 (row 6) mod 7.
// endDate = last day of the current week (WEEK_START + 6 days from the week's start).
const ws = ((CONFIG.WEEK_START % 7) + 7) % 7; // normalise to 0-6
const todayDow = today.getDay(); // 0=Sun … 6=Sat
// How many days until the end of the current week (the day before ws, mod 7)
const daysUntilEnd = ((ws - 1 - todayDow + 7) % 7); // 0 when today IS the last day
const endDate = addDays(today, daysUntilEnd);
const startDate = addDays(endDate, -(WEEKS * 7 - 1)); // 53 weeks back
const totalWidth = LEFT_OFFSET + WEEKS * STEP;
const totalHeight = TOP_OFFSET + DAYS * STEP;
svg.setAttribute("width", totalWidth);
svg.setAttribute("height", totalHeight);
svg.setAttribute("viewBox", `0 0 ${totalWidth} ${totalHeight}`);
// ── Month labels ──────────────────────────────────────────
let lastMonth = -1;
for (let col = 0; col < WEEKS; col++) {
const colStartDate = addDays(startDate, col * 7);
const month = colStartDate.getMonth();
if (month !== lastMonth) {
lastMonth = month;
const MONTHS = ["Jan", "Feb", "Mar", "Apr", "May", "Jun", "Jul", "Aug", "Sep", "Oct", "Nov", "Dec"];
const text = document.createElementNS("http://www.w3.org/2000/svg", "text");
text.setAttribute("x", LEFT_OFFSET + col * STEP);
text.setAttribute("y", 10);
text.setAttribute("font-size", "9");
text.setAttribute("fill", "var(--muted)");
text.textContent = MONTHS[month];
svg.appendChild(text);
}
}
// ── Day labels ────────────────────────────────────────────
// Build a 7-element label array rotated so row 0 = WEEK_START.
// Show the label on row 1 and row 3 (alternating visible rows).
const ALL_DAY_NAMES = ["Sun", "Mon", "Tue", "Wed", "Thu", "Fri", "Sat"];
const DAY_LABELS = Array.from({length: 7}, (_, row) => {
const dow = (ws + row) % 7;
// Show label on rows 1 and 3 (skip row 0 and even rows ≥2 to avoid clutter)
return (row === 1 || row === 3 || row === 5) ? ALL_DAY_NAMES[dow] : null;
});
DAY_LABELS.forEach((label, row) => {
if (!label) return;
const text = document.createElementNS("http://www.w3.org/2000/svg", "text");
text.setAttribute("x", LEFT_OFFSET - 4);
text.setAttribute("y", TOP_OFFSET + row * STEP + CELL_SIZE - 1);
text.setAttribute("font-size", "9");
text.setAttribute("fill", "var(--muted)");
text.setAttribute("text-anchor", "end");
text.textContent = label;
svg.appendChild(text);
});
// ── Cells ─────────────────────────────────────────────────
const tooltip = document.getElementById("tooltip");
for (let col = 0; col < WEEKS; col++) {
for (let row = 0; row < DAYS; row++) {
const cellDate = addDays(startDate, col * 7 + row); // row 0 = week-start day
cellDate.setHours(0, 0, 0, 0);
if (cellDate > today) continue; // don't render future cells
const iso = toISO(cellDate);
const count = entries[iso] || 0;
const level = cellLevel(count);
const isToday = iso === todayStr;
const x = LEFT_OFFSET + col * STEP;
const y = TOP_OFFSET + row * STEP;
const g = document.createElementNS("http://www.w3.org/2000/svg", "g");
g.setAttribute("class", "cell");
g.setAttribute("data-date", iso);
g.setAttribute("data-count", count);
const rect = document.createElementNS("http://www.w3.org/2000/svg", "rect");
rect.setAttribute("x", x);
rect.setAttribute("y", y);
rect.setAttribute("width", CELL_SIZE);
rect.setAttribute("height", CELL_SIZE);
rect.setAttribute("rx", "2");
rect.setAttribute("fill", getCSSColor(level));
if (isToday) {
rect.setAttribute("stroke", "var(--today-outline)");
rect.setAttribute("stroke-width", "1.5");
}
g.appendChild(rect);
// Tooltip events
g.addEventListener("mouseenter", (e) => {
const cups = entries[iso] || 0;
const label = cups === 1 ? "cup" : "cups";
tooltip.textContent = `${formatDisplay(iso)} — ${cups} ${label}`;
tooltip.style.display = "block";
positionTooltip(e);
});
g.addEventListener("mousemove", positionTooltip);
g.addEventListener("mouseleave", () => {
tooltip.style.display = "none";
});
// Click to edit (local mode only)
if (!isStaticMode) {
g.addEventListener("click", (e) => {
e.stopPropagation();
openPopover(iso, e.target);
});
}
svg.appendChild(g);
}
}
}
function positionTooltip(e) {
const tooltip = document.getElementById("tooltip");
const margin = 12;
let x = e.clientX + margin;
let y = e.clientY + margin;
const tw = tooltip.offsetWidth;
const th = tooltip.offsetHeight;
if (x + tw > window.innerWidth - 8) x = e.clientX - tw - margin;
if (y + th > window.innerHeight - 8) y = e.clientY - th - margin;
tooltip.style.left = x + "px";
tooltip.style.top = y + "px";
}
// ── Legend ────────────────────────────────────────────────────
function buildLegend() {
const legend = document.getElementById("legend");
legend.innerHTML = "";
const span0 = document.createElement("span");
span0.style.color = "var(--muted)";
span0.style.fontSize = "0.75rem";
span0.textContent = "less";
legend.appendChild(span0);
for (let i = 0; i <= 4; i++) {
const swatch = document.createElement("span");
swatch.className = "legend-swatch";
swatch.style.background = `var(${LEVEL_VARS[i]})`;
if (i === 0) {
swatch.style.border = "1px solid var(--border)";
}
legend.appendChild(swatch);
}
const span1 = document.createElement("span");
span1.style.color = "var(--muted)";
span1.style.fontSize = "0.75rem";
span1.textContent = `more (max ${CONFIG.MAX_CUPS})`;
legend.appendChild(span1);
}
// ── Stats ─────────────────────────────────────────────────────
function updateStats() {
const today = todayISO();
const todayCups = entries[today] || 0;
document.getElementById("stat-today").textContent =
`${todayCups} / ${CONFIG.MAX_CUPS} cup${todayCups === 1 ? "" : "s"}`;
// Streak: consecutive days with at least 1 cup, ending today or yesterday
let streak = 0;
let check = new Date();
check.setHours(0, 0, 0, 0);
// If today has no cups, start from yesterday
if (!entries[today]) {
check = addDays(check, -1);
}
while (true) {
const iso = toISO(check);
if (entries[iso] && entries[iso] > 0) {
streak++;
check = addDays(check, -1);
} else {
break;
}
}
document.getElementById("stat-streak").textContent =
`${streak} day${streak === 1 ? "" : "s"}`;
const allDates = Object.keys(entries).filter(k => entries[k] > 0);
const totalCups = allDates.reduce((s, k) => s + entries[k], 0);
const activeDays = allDates.length;
const avg = activeDays > 0 ? (totalCups / activeDays).toFixed(1) : "0.0";
document.getElementById("stat-total").textContent = totalCups;
document.getElementById("stat-avg").textContent = `${avg} cups/day`;
}
// ── Controls ──────────────────────────────────────────────────
function updateLogButtons() {
const today = todayISO();
const todayCups = entries[today] || 0;
const remaining = CONFIG.MAX_CUPS - todayCups;
const btnDec = document.getElementById("btn-dec-log");
const btnInc = document.getElementById("btn-inc-log");
const btnLog = document.getElementById("btn-log");
const display = document.getElementById("log-count-display");
// clamp logCount
if (logCount < 1) logCount = 1;
if (logCount > 10) logCount = 10;
if (logCount > remaining) logCount = Math.max(1, remaining);
display.textContent = logCount;
btnDec.disabled = logCount <= 1;
btnInc.disabled = logCount >= remaining || logCount >= 10;
btnLog.disabled = remaining <= 0;
}
document.getElementById("btn-dec-log").addEventListener("click", () => {
logCount = Math.max(1, logCount - 1);
updateLogButtons();
});
document.getElementById("btn-inc-log").addEventListener("click", () => {
const today = todayISO();
const todayCups = entries[today] || 0;
const remaining = CONFIG.MAX_CUPS - todayCups;
logCount = Math.min(10, Math.min(remaining, logCount + 1));
updateLogButtons();
});
document.getElementById("btn-log").addEventListener("click", () => {
const today = todayISO();
const current = entries[today] || 0;
const newVal = Math.min(CONFIG.MAX_CUPS, current + logCount);
if (newVal > 0) {
entries[today] = newVal;
}
saveData();
refresh();
});
// ── Popover ───────────────────────────────────────────────────
function openPopover(iso, targetEl) {
const popover = document.getElementById("popover");
const input = document.getElementById("pop-input");
const title = document.getElementById("pop-title");
popoverDate = iso;
const current = entries[iso] || 0;
title.textContent = formatDisplay(iso);
input.value = current;
input.max = CONFIG.MAX_CUPS;
updatePopoverButtons();
// Position near the cell
const svgEl = document.getElementById("heatmap-svg");
const svgRect = svgEl.getBoundingClientRect();
const targetRect = targetEl.closest("g").getBoundingClientRect
? targetEl.getBoundingClientRect()
: svgRect;
const scrollTop = window.scrollY || document.documentElement.scrollTop;
const scrollLeft = window.scrollX || document.documentElement.scrollLeft;
let px = targetRect.left + scrollLeft + CELL_SIZE + 4;
let py = targetRect.top + scrollTop;
popover.style.display = "block";
// After display, check bounds
const pw = popover.offsetWidth;
const ph = popover.offsetHeight;
const maxLeft = scrollLeft + window.innerWidth - pw - 8;
const maxTop = scrollTop + window.innerHeight - ph - 8;
if (px > maxLeft) px = targetRect.left + scrollLeft - pw - 4;
if (py > maxTop) py = maxTop;
if (py < scrollTop + 4) py = scrollTop + 4;
popover.style.left = px + "px";
popover.style.top = py + "px";
input.focus();
input.select();
}
function closePopover() {
document.getElementById("popover").style.display = "none";
popoverDate = null;
}
function updatePopoverButtons() {
const input = document.getElementById("pop-input");
const val = parseInt(input.value) || 0;
document.getElementById("pop-dec").disabled = val <= 0;
document.getElementById("pop-inc").disabled = val >= CONFIG.MAX_CUPS;
}
document.getElementById("pop-dec").addEventListener("click", () => {
const input = document.getElementById("pop-input");
const val = Math.max(0, (parseInt(input.value) || 0) - 1);
input.value = val;
updatePopoverButtons();
});
document.getElementById("pop-inc").addEventListener("click", () => {
const input = document.getElementById("pop-input");
const val = Math.min(CONFIG.MAX_CUPS, (parseInt(input.value) || 0) + 1);
input.value = val;
updatePopoverButtons();
});
document.getElementById("pop-input").addEventListener("input", updatePopoverButtons);
document.getElementById("pop-set").addEventListener("click", () => {
if (!popoverDate) return;
const val = parseInt(document.getElementById("pop-input").value) || 0;
if (val <= 0) {
delete entries[popoverDate];
} else {
entries[popoverDate] = Math.min(CONFIG.MAX_CUPS, val);
}
saveData();
closePopover();
refresh();
});
document.getElementById("pop-cancel").addEventListener("click", closePopover);
document.getElementById("pop-input").addEventListener("keydown", (e) => {
if (e.key === "Enter") document.getElementById("pop-set").click();
if (e.key === "Escape") closePopover();
});
document.addEventListener("keydown", (e) => {
if (e.key === "Escape" && popoverDate) closePopover();
});
document.addEventListener("click", (e) => {
const popover = document.getElementById("popover");
if (popover.style.display !== "none" && !popover.contains(e.target)) {
closePopover();
}
});
// ── Export / Import ───────────────────────────────────────────
document.getElementById("btn-export").addEventListener("click", () => {
const data = JSON.stringify({entries}, null, 2);
const blob = new Blob([data], {type: "application/json"});
const url = URL.createObjectURL(blob);
const a = document.createElement("a");
a.href = url;
a.download = "ccc-data.json";
a.click();
URL.revokeObjectURL(url);
});
document.getElementById("btn-import-trigger").addEventListener("click", () => {
document.getElementById("import-input").click();
});
document.getElementById("import-input").addEventListener("change", (e) => {
const file = e.target.files[0];
if (!file) return;
const reader = new FileReader();
reader.onload = (ev) => {
try {
const parsed = JSON.parse(ev.target.result);
if (parsed && typeof parsed.entries === "object") {
entries = {};
for (const [k, v] of Object.entries(parsed.entries)) {
if (/^\d{4}-\d{2}-\d{2}$/.test(k) && typeof v === "number" && v > 0) {
entries[k] = Math.min(CONFIG.MAX_CUPS, v);
}
}
saveData();
refresh();
} else {
alert("Invalid data format. Expected { \"entries\": { ... } }");
}
} catch {
alert("Failed to parse JSON file.");
}
};
reader.readAsText(file);
e.target.value = "";
});
// ── Storage ───────────────────────────────────────────────────
function saveData() {
if (isStaticMode) return;
localStorage.setItem(STORAGE_KEY, JSON.stringify({entries}));
}
function loadLocalData() {
const raw = localStorage.getItem(STORAGE_KEY);
if (!raw) return;
try {
const parsed = JSON.parse(raw);
if (parsed && typeof parsed.entries === "object") {
entries = {};
for (const [k, v] of Object.entries(parsed.entries)) {
if (/^\d{4}-\d{2}-\d{2}$/.test(k) && typeof v === "number" && v > 0) {
entries[k] = v;
}
}
}
} catch {
entries = {};
}
}
async function loadRemoteData() {
try {
const res = await fetch(CONFIG.DATA_URL);
if (!res.ok) throw new Error(`HTTP ${res.status}`);
const parsed = await res.json();
if (parsed && typeof parsed.entries === "object") {
entries = {};
for (const [k, v] of Object.entries(parsed.entries)) {
if (/^\d{4}-\d{2}-\d{2}$/.test(k) && typeof v === "number" && v > 0) {
entries[k] = v;
}
}
}
} catch (err) {
console.error("ccc: failed to load data from", CONFIG.DATA_URL, err);
}
}
// ── Render ────────────────────────────────────────────────────
function refresh() {
buildHeatmap();
buildLegend();
updateStats();
if (!isStaticMode) updateLogButtons();
}
// ── Dark mode observer ────────────────────────────────────────
const darkMQ = window.matchMedia("(prefers-color-scheme: dark)");
darkMQ.addEventListener("change", () => {
// Re-render SVG so CSS vars re-apply (SVG fill="var(...)" doesn't
// automatically repaint on MQ change in some browsers)
refresh();
});
// ── Init ──────────────────────────────────────────────────────
async function init() {
if (isStaticMode) {
document.getElementById("controls").style.display = "none";
await loadRemoteData();
} else {
loadLocalData();
}
refresh();
}
init();
</script>
</body>
</html>
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