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feat(dashboard): daily cost line + This Month timezone fix #151

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feat(dashboard): daily cost line + This Month timezone fix #151

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b055b1b
feat(dashboard): add Est. Cost line overlay to daily token usage chart
paulabenzar Jul 6, 2026
87d0f9d
fix(dashboard): use local date components in getRangeBounds to avoid …
paulabenzar Jul 6, 2026
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22 changes: 16 additions & 6 deletions dashboard.py
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Original file line number Diff line number Diff line change
Expand Up @@ -896,7 +896,7 @@ def get_dashboard_data(db_path=DB_PATH):
function getRangeBounds(range) {
if (range === 'all') return { start: null, end: null };
const today = new Date();
const iso = d => d.toISOString().slice(0, 10);
const iso = d => `${d.getFullYear()}-${String(d.getMonth()+1).padStart(2,'0')}-${String(d.getDate()).padStart(2,'0')}`;
if (range === 'today') {
const t = iso(today);
return { start: t, end: t };
Expand Down Expand Up @@ -1172,12 +1172,13 @@ def get_dashboard_data(db_path=DB_PATH):
// Daily chart: aggregate by day
const dailyMap = {};
for (const r of filteredDaily) {
if (!dailyMap[r.day]) dailyMap[r.day] = { day: r.day, input: 0, output: 0, cache_read: 0, cache_creation: 0 };
if (!dailyMap[r.day]) dailyMap[r.day] = { day: r.day, input: 0, output: 0, cache_read: 0, cache_creation: 0, cost: 0 };
const d = dailyMap[r.day];
d.input += r.input;
d.output += r.output;
d.cache_read += r.cache_read;
d.cache_creation += r.cache_creation;
d.cost += calcCost(r.model, r.input, r.output, r.cache_read, r.cache_creation);
}
const daily = Object.values(dailyMap).sort((a, b) => a.day.localeCompare(b.day));

Expand Down Expand Up @@ -1446,15 +1447,24 @@ def get_dashboard_data(db_path=DB_PATH):
{ label: 'Output', hidden: hiddenSeries.daily.has('Output'), data: daily.map(d => d.output), backgroundColor: TOKEN_COLORS.output, hoverBackgroundColor: TOKEN_HOVER.output, stack: 'io', yAxisID: 'y1' },
{ label: 'Cache Read', hidden: hiddenSeries.daily.has('Cache Read'), data: daily.map(d => d.cache_read), backgroundColor: TOKEN_COLORS.cache_read, hoverBackgroundColor: TOKEN_HOVER.cache_read, stack: 'cache', yAxisID: 'y' },
{ label: 'Cache Creation', hidden: hiddenSeries.daily.has('Cache Creation'), data: daily.map(d => d.cache_creation), backgroundColor: TOKEN_COLORS.cache_creation, hoverBackgroundColor: TOKEN_HOVER.cache_creation, stack: 'cache', yAxisID: 'y' },
{ type: 'line', label: 'Est. Cost', hidden: hiddenSeries.daily.has('Est. Cost'), data: daily.map(d => d.cost), borderColor: C.accent, backgroundColor: 'transparent', pointBackgroundColor: C.accent, pointRadius: 3, tension: 0.3, yAxisID: 'y2' },
]
},
options: {
responsive: true, maintainAspectRatio: false, resizeDelay: 150,
plugins: { legend: { onClick: legendToggle('daily'), labels: { color: C.axis, boxWidth: 12 } } },
plugins: {
legend: { onClick: legendToggle('daily'), labels: { color: C.axis, boxWidth: 12 } },
tooltip: { callbacks: {
label: item => item.dataset.label === 'Est. Cost'
? ` Est. Cost: ${fmtCost(item.raw)}`
: ` ${item.dataset.label}: ${fmt(item.raw)}`
}}
},
scales: {
x: { ticks: { color: C.axis, maxTicksLimit: RANGE_TICKS[selectedRange] }, grid: { color: C.border } },
y: { position: 'left', ticks: { color: C.green, callback: v => fmt(v) }, grid: { color: C.border }, title: { display: true, text: 'Cache', color: C.green } },
y1: { position: 'right', ticks: { color: C.blue, callback: v => fmt(v) }, grid: { drawOnChartArea: false }, title: { display: true, text: 'Input / Output', color: C.blue } },
x: { ticks: { color: C.axis, maxTicksLimit: RANGE_TICKS[selectedRange] }, grid: { color: C.border } },
y: { position: 'left', ticks: { color: C.green, callback: v => fmt(v) }, grid: { color: C.border }, title: { display: true, text: 'Cache', color: C.green } },
y1: { position: 'right', ticks: { color: C.blue, callback: v => fmt(v) }, grid: { drawOnChartArea: false }, title: { display: true, text: 'Input / Output', color: C.blue } },
y2: { position: 'right', ticks: { color: C.accent, callback: v => '$' + v.toFixed(2) }, grid: { drawOnChartArea: false }, title: { display: true, text: 'Est. Cost', color: C.accent }, offset: true },
}
}
});
Expand Down