Bring repo up to REPO_POLICIES.md standards

- Add prettier (4-space indents) and reformat all files
- Add Makefile with test/lint/fmt/fmt-check/check/docker targets
- Add MIT LICENSE file
- Add REPO_POLICIES.md
- Fix Dockerfile: listen on 8080 with PORT env var via envsubst
- Restructure README.md with all required sections
- Set up pre-commit hook (make check)
- Update .prettierignore, .gitignore, .dockerignore
This commit is contained in:
2026-02-22 15:59:10 +01:00
parent ca403e68d1
commit 818accc454
14 changed files with 671 additions and 420 deletions

View File

@@ -1,261 +1,297 @@
import './styles.css'
import "./styles.css";
// --- Configuration -----------------------------------------------------------
const CONFIG = Object.freeze({
updateInterval: 2000,
historyDuration: 300,
requestTimeout: 1000,
maxLatency: 1000,
yAxisTicks: [0, 250, 500, 750, 1000],
xAxisTicks: [0, 60, 120, 180, 240, 300],
canvasHeight: 80,
get maxHistoryPoints() {
return Math.ceil((this.historyDuration * 1000) / this.updateInterval)
},
})
updateInterval: 2000,
historyDuration: 300,
requestTimeout: 1000,
maxLatency: 1000,
yAxisTicks: [0, 250, 500, 750, 1000],
xAxisTicks: [0, 60, 120, 180, 240, 300],
canvasHeight: 80,
get maxHistoryPoints() {
return Math.ceil((this.historyDuration * 1000) / this.updateInterval);
},
});
const WAN_HOSTS = [
{ name: 'Google Cloud Console', url: 'https://console.cloud.google.com' },
{ name: 'AWS Console', url: 'https://console.aws.amazon.com' },
{ name: 'GitHub', url: 'https://github.com' },
{ name: 'Cloudflare', url: 'https://www.cloudflare.com' },
{ name: 'Microsoft Azure', url: 'https://portal.azure.com' },
{ name: 'DigitalOcean', url: 'https://www.digitalocean.com' },
{ name: 'Fastly CDN', url: 'https://www.fastly.com' },
{ name: 'Akamai', url: 'https://www.akamai.com' },
{ name: 'datavi.be', url: 'https://datavi.be' },
]
{ name: "Google Cloud Console", url: "https://console.cloud.google.com" },
{ name: "AWS Console", url: "https://console.aws.amazon.com" },
{ name: "GitHub", url: "https://github.com" },
{ name: "Cloudflare", url: "https://www.cloudflare.com" },
{ name: "Microsoft Azure", url: "https://portal.azure.com" },
{ name: "DigitalOcean", url: "https://www.digitalocean.com" },
{ name: "Fastly CDN", url: "https://www.fastly.com" },
{ name: "Akamai", url: "https://www.akamai.com" },
{ name: "datavi.be", url: "https://datavi.be" },
];
const LOCAL_HOSTS = [
{ name: 'Local Gateway', url: 'http://192.168.100.1' },
]
const LOCAL_HOSTS = [{ name: "Local Gateway", url: "http://192.168.100.1" }];
// --- App State ---------------------------------------------------------------
class HostState {
constructor(host) {
this.name = host.name
this.url = host.url
this.history = [] // { timestamp, latency, paused }
this.lastLatency = null
this.status = 'pending' // 'online' | 'offline' | 'error' | 'pending'
}
constructor(host) {
this.name = host.name;
this.url = host.url;
this.history = []; // { timestamp, latency, paused }
this.lastLatency = null;
this.status = "pending"; // 'online' | 'offline' | 'error' | 'pending'
}
pushSample(timestamp, result) {
this.history.push({ timestamp, latency: result.latency, error: result.error })
this._trim()
this.lastLatency = result.latency
if (result.error === 'timeout') this.status = 'error'
else if (result.error) this.status = 'offline'
else this.status = 'online'
}
pushSample(timestamp, result) {
this.history.push({
timestamp,
latency: result.latency,
error: result.error,
});
this._trim();
this.lastLatency = result.latency;
if (result.error === "timeout") this.status = "error";
else if (result.error) this.status = "offline";
else this.status = "online";
}
pushPaused(timestamp) {
this.history.push({ timestamp, latency: null, paused: true })
this._trim()
}
pushPaused(timestamp) {
this.history.push({ timestamp, latency: null, paused: true });
this._trim();
}
averageLatency() {
const valid = this.history.filter(p => p.latency !== null)
if (valid.length === 0) return null
return Math.round(valid.reduce((s, p) => s + p.latency, 0) / valid.length)
}
averageLatency() {
const valid = this.history.filter((p) => p.latency !== null);
if (valid.length === 0) return null;
return Math.round(
valid.reduce((s, p) => s + p.latency, 0) / valid.length,
);
}
_trim() {
while (this.history.length > CONFIG.maxHistoryPoints) this.history.shift()
}
_trim() {
while (this.history.length > CONFIG.maxHistoryPoints)
this.history.shift();
}
}
class AppState {
constructor() {
this.wan = WAN_HOSTS.map(h => new HostState(h))
this.local = LOCAL_HOSTS.map(h => new HostState(h))
this.paused = false
}
get allHosts() { return [...this.wan, ...this.local] }
/** WAN-only stats from latest sample (excludes local) */
wanStats() {
const reachable = this.wan.filter(h => h.lastLatency !== null)
const latencies = reachable.map(h => h.lastLatency)
const total = this.wan.length
if (latencies.length === 0) return { reachable: 0, total, min: null, max: null, avg: null }
return {
reachable: latencies.length,
total,
min: Math.min(...latencies),
max: Math.max(...latencies),
avg: Math.round(latencies.reduce((a, b) => a + b, 0) / latencies.length),
constructor() {
this.wan = WAN_HOSTS.map((h) => new HostState(h));
this.local = LOCAL_HOSTS.map((h) => new HostState(h));
this.paused = false;
}
}
/** Overall health: true = healthy (more than half WAN reachable) */
isHealthy() {
const reachable = this.wan.filter(h => h.lastLatency !== null).length
return reachable > this.wan.length / 2
}
get allHosts() {
return [...this.wan, ...this.local];
}
/** WAN-only stats from latest sample (excludes local) */
wanStats() {
const reachable = this.wan.filter((h) => h.lastLatency !== null);
const latencies = reachable.map((h) => h.lastLatency);
const total = this.wan.length;
if (latencies.length === 0)
return { reachable: 0, total, min: null, max: null, avg: null };
return {
reachable: latencies.length,
total,
min: Math.min(...latencies),
max: Math.max(...latencies),
avg: Math.round(
latencies.reduce((a, b) => a + b, 0) / latencies.length,
),
};
}
/** Overall health: true = healthy (more than half WAN reachable) */
isHealthy() {
const reachable = this.wan.filter((h) => h.lastLatency !== null).length;
return reachable > this.wan.length / 2;
}
}
// --- Latency Measurement -----------------------------------------------------
async function measureLatency(url) {
const controller = new AbortController()
const timeoutId = setTimeout(() => controller.abort(), CONFIG.requestTimeout)
const controller = new AbortController();
const timeoutId = setTimeout(
() => controller.abort(),
CONFIG.requestTimeout,
);
const targetUrl = new URL(url)
targetUrl.searchParams.set('_cb', Date.now().toString())
const targetUrl = new URL(url);
targetUrl.searchParams.set("_cb", Date.now().toString());
const start = performance.now()
const start = performance.now();
try {
await fetch(targetUrl.toString(), {
method: 'HEAD',
mode: 'no-cors',
cache: 'no-store',
signal: controller.signal,
})
const latency = Math.round(performance.now() - start)
clearTimeout(timeoutId)
if (latency > CONFIG.maxLatency) return { latency: null, error: 'timeout' }
return { latency, error: null }
} catch (err) {
clearTimeout(timeoutId)
if (err.name === 'AbortError') return { latency: null, error: 'timeout' }
return { latency: null, error: 'unreachable' }
}
try {
await fetch(targetUrl.toString(), {
method: "HEAD",
mode: "no-cors",
cache: "no-store",
signal: controller.signal,
});
const latency = Math.round(performance.now() - start);
clearTimeout(timeoutId);
if (latency > CONFIG.maxLatency)
return { latency: null, error: "timeout" };
return { latency, error: null };
} catch (err) {
clearTimeout(timeoutId);
if (err.name === "AbortError")
return { latency: null, error: "timeout" };
return { latency: null, error: "unreachable" };
}
}
// --- Color Helpers -----------------------------------------------------------
function latencyHex(latency) {
if (latency === null) return '#6b7280'
if (latency < 50) return '#22c55e'
if (latency < 100) return '#84cc16'
if (latency < 200) return '#eab308'
if (latency < 500) return '#f97316'
return '#ef4444'
if (latency === null) return "#6b7280";
if (latency < 50) return "#22c55e";
if (latency < 100) return "#84cc16";
if (latency < 200) return "#eab308";
if (latency < 500) return "#f97316";
return "#ef4444";
}
function latencyClass(latency, status) {
if (status === 'offline' || status === 'error' || latency === null) return 'text-gray-500'
if (latency < 50) return 'text-green-500'
if (latency < 100) return 'text-lime-500'
if (latency < 200) return 'text-yellow-500'
if (latency < 500) return 'text-orange-500'
return 'text-red-500'
if (status === "offline" || status === "error" || latency === null)
return "text-gray-500";
if (latency < 50) return "text-green-500";
if (latency < 100) return "text-lime-500";
if (latency < 200) return "text-yellow-500";
if (latency < 500) return "text-orange-500";
return "text-red-500";
}
// --- Sparkline Renderer ------------------------------------------------------
class SparklineRenderer {
static MARGIN = { left: 35, right: 10, top: 5, bottom: 18 }
static MARGIN = { left: 35, right: 10, top: 5, bottom: 18 };
static draw(canvas, history) {
const ctx = canvas.getContext('2d')
const dpr = window.devicePixelRatio || 1
const w = canvas.width / dpr
const h = canvas.height / dpr
const m = SparklineRenderer.MARGIN
const cw = w - m.left - m.right
const ch = h - m.top - m.bottom
static draw(canvas, history) {
const ctx = canvas.getContext("2d");
const dpr = window.devicePixelRatio || 1;
const w = canvas.width / dpr;
const h = canvas.height / dpr;
const m = SparklineRenderer.MARGIN;
const cw = w - m.left - m.right;
const ch = h - m.top - m.bottom;
ctx.clearRect(0, 0, w, h)
SparklineRenderer._drawYAxis(ctx, w, h, m, ch)
SparklineRenderer._drawXAxis(ctx, w, h, m, cw)
ctx.clearRect(0, 0, w, h);
SparklineRenderer._drawYAxis(ctx, w, h, m, ch);
SparklineRenderer._drawXAxis(ctx, w, h, m, cw);
const len = history.length
const pw = cw / (CONFIG.maxHistoryPoints - 1)
const getX = i => m.left + cw - (len - 1 - i) * pw
const getY = lat => m.top + ch - (lat / CONFIG.maxLatency) * ch
const len = history.length;
const pw = cw / (CONFIG.maxHistoryPoints - 1);
const getX = (i) => m.left + cw - (len - 1 - i) * pw;
const getY = (lat) => m.top + ch - (lat / CONFIG.maxLatency) * ch;
SparklineRenderer._drawErrors(ctx, history, getX, m.top, ch)
SparklineRenderer._drawLine(ctx, history, getX, getY)
SparklineRenderer._drawTip(ctx, history, getX, getY)
}
static _drawYAxis(ctx, w, h, m, ch) {
ctx.font = '9px monospace'
ctx.textAlign = 'right'
ctx.textBaseline = 'middle'
for (const tick of CONFIG.yAxisTicks) {
const y = m.top + ch - (tick / CONFIG.maxLatency) * ch
ctx.strokeStyle = 'rgba(255,255,255,0.1)'
ctx.lineWidth = 1
ctx.beginPath(); ctx.moveTo(m.left, y); ctx.lineTo(w - m.right, y); ctx.stroke()
ctx.fillStyle = 'rgba(255,255,255,0.5)'
ctx.fillText(`${tick}`, m.left - 4, y)
SparklineRenderer._drawErrors(ctx, history, getX, m.top, ch);
SparklineRenderer._drawLine(ctx, history, getX, getY);
SparklineRenderer._drawTip(ctx, history, getX, getY);
}
}
static _drawXAxis(ctx, w, h, m, cw) {
ctx.textAlign = 'center'
ctx.textBaseline = 'top'
for (const tick of CONFIG.xAxisTicks) {
const x = m.left + cw - (tick / CONFIG.historyDuration) * cw
ctx.fillStyle = 'rgba(255,255,255,0.5)'
ctx.fillText(`-${tick}s`, x, h - m.bottom + 4)
static _drawYAxis(ctx, w, h, m, ch) {
ctx.font = "9px monospace";
ctx.textAlign = "right";
ctx.textBaseline = "middle";
for (const tick of CONFIG.yAxisTicks) {
const y = m.top + ch - (tick / CONFIG.maxLatency) * ch;
ctx.strokeStyle = "rgba(255,255,255,0.1)";
ctx.lineWidth = 1;
ctx.beginPath();
ctx.moveTo(m.left, y);
ctx.lineTo(w - m.right, y);
ctx.stroke();
ctx.fillStyle = "rgba(255,255,255,0.5)";
ctx.fillText(`${tick}`, m.left - 4, y);
}
}
}
static _drawErrors(ctx, history, getX, top, ch) {
ctx.fillStyle = 'rgba(239, 68, 68, 0.2)'
let inErr = false, start = 0
for (let i = 0; i < history.length; i++) {
const p = history[i]
const x = getX(i)
// Only real errors, not paused gaps
const isError = p.latency === null && !p.paused
if (isError && !inErr) { inErr = true; start = x }
else if (!isError && inErr) { inErr = false; ctx.fillRect(start, top, x - start, ch) }
static _drawXAxis(ctx, w, h, m, cw) {
ctx.textAlign = "center";
ctx.textBaseline = "top";
for (const tick of CONFIG.xAxisTicks) {
const x = m.left + cw - (tick / CONFIG.historyDuration) * cw;
ctx.fillStyle = "rgba(255,255,255,0.5)";
ctx.fillText(`-${tick}s`, x, h - m.bottom + 4);
}
}
if (inErr) ctx.fillRect(start, top, getX(history.length - 1) - start + 5, ch)
}
static _drawLine(ctx, history, getX, getY) {
ctx.lineWidth = 2
ctx.lineCap = 'round'
ctx.lineJoin = 'round'
let prev = null
for (let i = 0; i < history.length; i++) {
const p = history[i]
if (p.latency === null) { prev = null; continue }
const x = getX(i), y = getY(p.latency)
if (prev) {
ctx.strokeStyle = latencyHex(p.latency)
ctx.beginPath(); ctx.moveTo(prev.x, prev.y); ctx.lineTo(x, y); ctx.stroke()
}
prev = { x, y }
static _drawErrors(ctx, history, getX, top, ch) {
ctx.fillStyle = "rgba(239, 68, 68, 0.2)";
let inErr = false,
start = 0;
for (let i = 0; i < history.length; i++) {
const p = history[i];
const x = getX(i);
// Only real errors, not paused gaps
const isError = p.latency === null && !p.paused;
if (isError && !inErr) {
inErr = true;
start = x;
} else if (!isError && inErr) {
inErr = false;
ctx.fillRect(start, top, x - start, ch);
}
}
if (inErr)
ctx.fillRect(start, top, getX(history.length - 1) - start + 5, ch);
}
}
static _drawTip(ctx, history, getX, getY) {
for (let i = history.length - 1; i >= 0; i--) {
if (history[i].latency !== null) {
const x = getX(i), y = getY(history[i].latency)
ctx.fillStyle = latencyHex(history[i].latency)
ctx.beginPath(); ctx.arc(x, y, 3, 0, Math.PI * 2); ctx.fill()
return
}
static _drawLine(ctx, history, getX, getY) {
ctx.lineWidth = 2;
ctx.lineCap = "round";
ctx.lineJoin = "round";
let prev = null;
for (let i = 0; i < history.length; i++) {
const p = history[i];
if (p.latency === null) {
prev = null;
continue;
}
const x = getX(i),
y = getY(p.latency);
if (prev) {
ctx.strokeStyle = latencyHex(p.latency);
ctx.beginPath();
ctx.moveTo(prev.x, prev.y);
ctx.lineTo(x, y);
ctx.stroke();
}
prev = { x, y };
}
}
}
static sizeCanvas(canvas) {
const dpr = window.devicePixelRatio || 1
const rect = canvas.getBoundingClientRect()
canvas.width = rect.width * dpr
canvas.height = CONFIG.canvasHeight * dpr
const ctx = canvas.getContext('2d')
ctx.setTransform(1, 0, 0, 1, 0, 0)
ctx.scale(dpr, dpr)
}
static _drawTip(ctx, history, getX, getY) {
for (let i = history.length - 1; i >= 0; i--) {
if (history[i].latency !== null) {
const x = getX(i),
y = getY(history[i].latency);
ctx.fillStyle = latencyHex(history[i].latency);
ctx.beginPath();
ctx.arc(x, y, 3, 0, Math.PI * 2);
ctx.fill();
return;
}
}
}
static sizeCanvas(canvas) {
const dpr = window.devicePixelRatio || 1;
const rect = canvas.getBoundingClientRect();
canvas.width = rect.width * dpr;
canvas.height = CONFIG.canvasHeight * dpr;
const ctx = canvas.getContext("2d");
ctx.setTransform(1, 0, 0, 1, 0, 0);
ctx.scale(dpr, dpr);
}
}
// --- UI Renderer -------------------------------------------------------------
function hostRowHTML(host, index) {
return `
return `
<div class="host-row bg-gray-800/50 rounded-lg p-4 border border-gray-700/50" data-index="${index}">
<div class="flex items-center gap-4">
<div class="w-48 flex-shrink-0">
@@ -275,12 +311,12 @@ function hostRowHTML(host, index) {
<canvas class="sparkline-canvas w-full" data-host="${index}" height="${CONFIG.canvasHeight}"></canvas>
</div>
</div>
</div>`
</div>`;
}
function buildUI(state) {
const app = document.getElementById('app')
app.innerHTML = `
const app = document.getElementById("app");
app.innerHTML = `
<div class="max-w-7xl mx-auto px-4 py-8">
<header class="mb-8">
<div class="flex items-center justify-between mb-4">
@@ -317,12 +353,12 @@ function buildUI(state) {
</header>
<div id="wan-hosts" class="space-y-4">
${state.wan.map((h, i) => hostRowHTML(h, i)).join('')}
${state.wan.map((h, i) => hostRowHTML(h, i)).join("")}
</div>
<h2 class="text-gray-500 text-xs uppercase tracking-wide mt-6 mb-3">Local Network</h2>
<div id="local-hosts" class="space-y-4">
${state.local.map((h, i) => hostRowHTML(h, state.wan.length + i)).join('')}
${state.local.map((h, i) => hostRowHTML(h, state.wan.length + i)).join("")}
</div>
<footer class="mt-8 text-center text-gray-600 text-xs">
@@ -336,162 +372,192 @@ function buildUI(state) {
<span class="inline-block w-3 h-3 rounded-full bg-gray-500 mr-1 ml-3 align-middle"></span>offline
</p>
</footer>
</div>`
</div>`;
requestAnimationFrame(() => {
document.querySelectorAll('.sparkline-canvas').forEach(c => SparklineRenderer.sizeCanvas(c))
})
requestAnimationFrame(() => {
document
.querySelectorAll(".sparkline-canvas")
.forEach((c) => SparklineRenderer.sizeCanvas(c));
});
}
// --- UI Updaters -------------------------------------------------------------
function updateHostRow(host, index) {
const latencyEl = document.querySelector(`.latency-value[data-host="${index}"]`)
const statusEl = document.querySelector(`.status-text[data-host="${index}"]`)
const canvas = document.querySelector(`.sparkline-canvas[data-host="${index}"]`)
if (!latencyEl || !statusEl || !canvas) return
const latencyEl = document.querySelector(
`.latency-value[data-host="${index}"]`,
);
const statusEl = document.querySelector(
`.status-text[data-host="${index}"]`,
);
const canvas = document.querySelector(
`.sparkline-canvas[data-host="${index}"]`,
);
if (!latencyEl || !statusEl || !canvas) return;
if (host.lastLatency !== null) {
const cls = latencyClass(host.lastLatency, host.status)
latencyEl.innerHTML = `<span class="${cls}">${host.lastLatency}<span class="text-lg">ms</span></span>`
} else if (host.status === 'offline' || host.status === 'error') {
latencyEl.innerHTML = `<span class="text-gray-500">---</span>`
}
if (host.lastLatency !== null) {
const cls = latencyClass(host.lastLatency, host.status);
latencyEl.innerHTML = `<span class="${cls}">${host.lastLatency}<span class="text-lg">ms</span></span>`;
} else if (host.status === "offline" || host.status === "error") {
latencyEl.innerHTML = `<span class="text-gray-500">---</span>`;
}
const avg = host.averageLatency()
if (host.status === 'online' && avg !== null) {
statusEl.textContent = `avg: ${avg}ms`
statusEl.className = 'status-text text-xs text-gray-400 mt-1'
} else if (host.status === 'offline') {
statusEl.textContent = 'unreachable'
statusEl.className = 'status-text text-xs text-red-400 mt-1'
} else if (host.status === 'error') {
statusEl.textContent = 'timeout'
statusEl.className = 'status-text text-xs text-orange-400 mt-1'
} else {
statusEl.textContent = 'connecting...'
statusEl.className = 'status-text text-xs text-gray-500 mt-1'
}
const avg = host.averageLatency();
if (host.status === "online" && avg !== null) {
statusEl.textContent = `avg: ${avg}ms`;
statusEl.className = "status-text text-xs text-gray-400 mt-1";
} else if (host.status === "offline") {
statusEl.textContent = "unreachable";
statusEl.className = "status-text text-xs text-red-400 mt-1";
} else if (host.status === "error") {
statusEl.textContent = "timeout";
statusEl.className = "status-text text-xs text-orange-400 mt-1";
} else {
statusEl.textContent = "connecting...";
statusEl.className = "status-text text-xs text-gray-500 mt-1";
}
SparklineRenderer.draw(canvas, host.history)
SparklineRenderer.draw(canvas, host.history);
}
function updateSummary(state) {
const stats = state.wanStats()
const stats = state.wanStats();
const reachableEl = document.getElementById('summary-reachable')
const minEl = document.getElementById('summary-min')
const maxEl = document.getElementById('summary-max')
const avgEl = document.getElementById('summary-avg')
if (!reachableEl) return
const reachableEl = document.getElementById("summary-reachable");
const minEl = document.getElementById("summary-min");
const maxEl = document.getElementById("summary-max");
const avgEl = document.getElementById("summary-avg");
if (!reachableEl) return;
reachableEl.textContent = `${stats.reachable}/${stats.total}`
reachableEl.className = stats.reachable === stats.total ? 'text-green-400' :
stats.reachable === 0 ? 'text-red-400' : 'text-yellow-400'
reachableEl.textContent = `${stats.reachable}/${stats.total}`;
reachableEl.className =
stats.reachable === stats.total
? "text-green-400"
: stats.reachable === 0
? "text-red-400"
: "text-yellow-400";
if (stats.min !== null) {
minEl.textContent = `${stats.min}ms`; minEl.className = latencyClass(stats.min, 'online')
maxEl.textContent = `${stats.max}ms`; maxEl.className = latencyClass(stats.max, 'online')
avgEl.textContent = `${stats.avg}ms`; avgEl.className = latencyClass(stats.avg, 'online')
} else {
for (const el of [minEl, maxEl, avgEl]) { el.textContent = '--ms'; el.className = 'text-gray-500' }
}
if (stats.min !== null) {
minEl.textContent = `${stats.min}ms`;
minEl.className = latencyClass(stats.min, "online");
maxEl.textContent = `${stats.max}ms`;
maxEl.className = latencyClass(stats.max, "online");
avgEl.textContent = `${stats.avg}ms`;
avgEl.className = latencyClass(stats.avg, "online");
} else {
for (const el of [minEl, maxEl, avgEl]) {
el.textContent = "--ms";
el.className = "text-gray-500";
}
}
}
function updateHealthBox(state) {
const el = document.getElementById('health-text')
const box = document.getElementById('health-box')
if (!el || !box) return
const el = document.getElementById("health-text");
const box = document.getElementById("health-box");
if (!el || !box) return;
const anyData = state.wan.some(h => h.status !== 'pending')
if (!anyData) return
const anyData = state.wan.some((h) => h.status !== "pending");
if (!anyData) return;
const healthy = state.isHealthy()
el.textContent = healthy ? 'HEALTHY' : 'DEGRADED'
el.className = healthy ? 'text-green-400 font-bold' : 'text-red-400 font-bold'
box.className = `mt-4 p-3 rounded-lg border font-mono text-sm text-center ${
healthy ? 'bg-green-900/20 border-green-700/50' : 'bg-red-900/20 border-red-700/50'
}`
const healthy = state.isHealthy();
el.textContent = healthy ? "HEALTHY" : "DEGRADED";
el.className = healthy
? "text-green-400 font-bold"
: "text-red-400 font-bold";
box.className = `mt-4 p-3 rounded-lg border font-mono text-sm text-center ${
healthy
? "bg-green-900/20 border-green-700/50"
: "bg-red-900/20 border-red-700/50"
}`;
}
// --- Main Loop ---------------------------------------------------------------
async function tick(state) {
const ts = Date.now()
const ts = Date.now();
if (state.paused) {
// No probes — just push a paused marker so the chart keeps scrolling
for (const host of state.allHosts) {
host.pushPaused(ts)
if (state.paused) {
// No probes — just push a paused marker so the chart keeps scrolling
for (const host of state.allHosts) {
host.pushPaused(ts);
}
// Redraw sparklines only
state.allHosts.forEach((host, i) => {
const canvas = document.querySelector(
`.sparkline-canvas[data-host="${i}"]`,
);
if (canvas) SparklineRenderer.draw(canvas, host.history);
});
return;
}
// Redraw sparklines only
const results = await Promise.all(
state.allHosts.map((h) => measureLatency(h.url)),
);
state.allHosts.forEach((host, i) => {
const canvas = document.querySelector(`.sparkline-canvas[data-host="${i}"]`)
if (canvas) SparklineRenderer.draw(canvas, host.history)
})
return
}
host.pushSample(ts, results[i]);
updateHostRow(host, i);
});
const results = await Promise.all(
state.allHosts.map(h => measureLatency(h.url))
)
state.allHosts.forEach((host, i) => {
host.pushSample(ts, results[i])
updateHostRow(host, i)
})
updateSummary(state)
updateHealthBox(state)
updateSummary(state);
updateHealthBox(state);
}
// --- Pause / Resume ----------------------------------------------------------
function togglePause(state) {
state.paused = !state.paused
const pauseIcon = document.getElementById('pause-icon')
const playIcon = document.getElementById('play-icon')
const pauseText = document.getElementById('pause-text')
const indicator = document.getElementById('status-indicator')
state.paused = !state.paused;
const pauseIcon = document.getElementById("pause-icon");
const playIcon = document.getElementById("play-icon");
const pauseText = document.getElementById("pause-text");
const indicator = document.getElementById("status-indicator");
if (state.paused) {
pauseIcon.classList.add('hidden'); playIcon.classList.remove('hidden')
pauseText.textContent = 'Resume'
indicator.textContent = 'Paused'; indicator.className = 'text-yellow-400'
} else {
pauseIcon.classList.remove('hidden'); playIcon.classList.add('hidden')
pauseText.textContent = 'Pause'
indicator.textContent = 'Running'; indicator.className = 'text-green-400'
}
if (state.paused) {
pauseIcon.classList.add("hidden");
playIcon.classList.remove("hidden");
pauseText.textContent = "Resume";
indicator.textContent = "Paused";
indicator.className = "text-yellow-400";
} else {
pauseIcon.classList.remove("hidden");
playIcon.classList.add("hidden");
pauseText.textContent = "Pause";
indicator.textContent = "Running";
indicator.className = "text-green-400";
}
}
// --- Resize ------------------------------------------------------------------
function handleResize(state) {
document.querySelectorAll('.sparkline-canvas').forEach((canvas, i) => {
SparklineRenderer.sizeCanvas(canvas)
const host = state.allHosts[i]
if (host) SparklineRenderer.draw(canvas, host.history)
})
document.querySelectorAll(".sparkline-canvas").forEach((canvas, i) => {
SparklineRenderer.sizeCanvas(canvas);
const host = state.allHosts[i];
if (host) SparklineRenderer.draw(canvas, host.history);
});
}
// --- Bootstrap ---------------------------------------------------------------
function init() {
const state = new AppState()
buildUI(state)
const state = new AppState();
buildUI(state);
document.getElementById('pause-btn').addEventListener('click', () => togglePause(state))
document
.getElementById("pause-btn")
.addEventListener("click", () => togglePause(state));
tick(state)
setInterval(() => tick(state), CONFIG.updateInterval)
tick(state);
setInterval(() => tick(state), CONFIG.updateInterval);
window.addEventListener('resize', () => handleResize(state))
setTimeout(() => handleResize(state), 100)
window.addEventListener("resize", () => handleResize(state));
setTimeout(() => handleResize(state), 100);
}
if (document.readyState === 'loading') {
document.addEventListener('DOMContentLoaded', init)
if (document.readyState === "loading") {
document.addEventListener("DOMContentLoaded", init);
} else {
init()
init();
}