Add backup history charts

webgui/assets/backupper.js

@@ -110,6 +110,26 @@
   const button = (label, action, kind = '') => `<button class="bu-button ${kind}" type="button" data-action="${esc(action)}"${tipAttr(actionTooltip(action, label))}>${esc(label)}</button>`;
   const disabledButton = (label, help) => `<button class="bu-button" type="button" disabled${tipAttr(help)}>${esc(label)}</button>`;
   const actionGroup = (buttons) => `<div class="bu-actions bu-table-actions">${buttons}</div>`;
+  const formatBytes = (value) => {
+    const units = ['B','KiB','MiB','GiB','TiB']; let size = Number(value)||0; let unit = 0;
+    while (size >= 1024 && unit < units.length-1) { size /= 1024; unit++; }
+    return `${size >= 10 || unit === 0 ? size.toFixed(0) : size.toFixed(1)} ${units[unit]}`;
+  };
+
+  function lineChart(runs, field, formatter, emptyText) {
+    const points = runs.map(run=>({run,value:Number(run[field] || (field==='bytesProcessed'?run.bytesAdded:run.filesNew) || 0)}));
+    if (!points.length || points.every(point=>point.value===0)) return `<div class="bu-chart-empty">${esc(emptyText)}</div>`;
+    const width=720, height=220, left=54, right=18, top=18, bottom=38, innerW=width-left-right, innerH=height-top-bottom;
+    const max=Math.max(...points.map(point=>point.value),1);
+    const coords=points.map((point,index)=>({ ...point, x:left+(points.length===1?innerW/2:index*innerW/(points.length-1)), y:top+innerH-(point.value/max)*innerH }));
+    const polyline=coords.map(point=>`${point.x.toFixed(1)},${point.y.toFixed(1)}`).join(' ');
+    const area=`${left},${top+innerH} ${polyline} ${left+innerW},${top+innerH}`;
+    const grid=[0,.25,.5,.75,1].map(ratio=>{const y=top+innerH-ratio*innerH; return `<line x1="${left}" y1="${y}" x2="${left+innerW}" y2="${y}"/><text x="${left-8}" y="${y+4}" text-anchor="end">${esc(formatter(max*ratio))}</text>`;}).join('');
+    const dots=coords.map(point=>{const job=state.config.jobs.find(item=>item.id===point.run.jobId)?.name||point.run.jobId; const date=new Date(point.run.finishedAt||point.run.createdAt).toLocaleString(); return `<circle cx="${point.x}" cy="${point.y}" r="4"><title>${esc(`${date} · ${job} · ${formatter(point.value)}`)}</title></circle>`;}).join('');
+    const first=new Date(points[0].run.finishedAt||points[0].run.createdAt).toLocaleDateString();
+    const last=new Date(points.at(-1).run.finishedAt||points.at(-1).run.createdAt).toLocaleDateString();
+    return `<svg class="bu-chart" viewBox="0 0 ${width} ${height}" role="img"><g class="bu-chart-grid">${grid}</g><polygon class="bu-chart-area" points="${area}"/><polyline class="bu-chart-line" points="${polyline}"/><g class="bu-chart-dots">${dots}</g><text class="bu-chart-date" x="${left}" y="${height-8}">${esc(first)}</text><text class="bu-chart-date" x="${left+innerW}" y="${height-8}" text-anchor="end">${esc(last)}</text></svg>`;
+  }
 
   function setTooltip(element, text) {
     if (!element || !text || element.dataset.tooltip) return;
@@ -203,11 +223,15 @@
     const active = state.runs.filter(r => ['queued','running'].includes(r.status)).length;
     const failures = state.runs.filter(r => r.status === 'failed').slice(-5);
     const last = [...state.runs].reverse().slice(0, 8);
+    const backups = state.runs.filter(r=>r.taskType==='backup' && ['success','warning'].includes(r.status)).slice(-20);
     return `<div class="bu-grid">
       <section class="bu-card"><div class="bu-muted">Enabled jobs</div><div class="bu-stat">${state.config.jobs.filter(j => j.enabled).length}</div></section>
       <section class="bu-card"><div class="bu-muted">Repositories</div><div class="bu-stat">${state.config.repositories.length}</div></section>
       <section class="bu-card"><div class="bu-muted">Queued / running</div><div class="bu-stat">${active}</div></section>
       <section class="bu-card"><div class="bu-muted">Recent failures</div><div class="bu-stat">${failures.length}</div></section>
+    </div><div class="bu-chart-grid-layout">
+      <section class="bu-card"><h2>Backup size</h2><div class="bu-muted">Total source data processed per backup</div>${lineChart(backups,'bytesProcessed',formatBytes,'Run a backup to collect size history.')}</section>
+      <section class="bu-card"><h2>Files backed up</h2><div class="bu-muted">Total files processed per backup</div>${lineChart(backups,'filesProcessed',value=>Math.round(value).toLocaleString(),'Run a backup to collect file history.')}</section>
     </div><section class="bu-card" style="margin-top:16px"><h2>Recent activity</h2>${runsTable(last)}</section>`;
   }