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Astronome/frontend/src/components/charts/YearlyVisibility.tsx
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2026-04-09 23:23:31 +02:00

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import {
ComposedChart,
Bar,
Line,
XAxis,
YAxis,
CartesianGrid,
Tooltip,
ResponsiveContainer,
Cell,
} from 'recharts';
interface YearPoint {
date: string;
alt_at_midnight: number;
transit_alt: number;
usable_min: number;
moon_illumination: number;
}
interface Props {
points: YearPoint[];
}
const MONTH_ABBR = ['Jan', 'Feb', 'Mar', 'Apr', 'May', 'Jun', 'Jul', 'Aug', 'Sep', 'Oct', 'Nov', 'Dec'];
function altColor(alt: number): string {
if (alt >= 50) return 'var(--good)';
if (alt >= 30) return '#2ab8a0';
if (alt >= 15) return 'var(--warn)';
return 'var(--muted)';
}
export default function YearlyVisibility({ points }: Props) {
if (!points.length) return null;
// Sample to ~52 weekly points for readability
const stride = Math.max(1, Math.floor(points.length / 52));
const sampled = points.filter((_, i) => i % stride === 0);
const data = sampled.map(p => {
const d = new Date(p.date + 'T00:00:00Z');
return {
label: `${MONTH_ABBR[d.getUTCMonth()]} ${d.getUTCDate()}`,
month: d.getUTCMonth(),
alt: Math.round(p.alt_at_midnight * 10) / 10,
transit_alt: Math.round(p.transit_alt),
usable: Math.round(p.usable_min / 60 * 10) / 10,
moon: Math.round(p.moon_illumination * 100),
};
});
return (
<div>
<div style={{ fontSize: 11, color: 'var(--text-lo)', fontFamily: 'var(--font-mono)', marginBottom: 6 }}>
ALTITUDE AT MIDNIGHT next 12 months (varies as transit shifts through seasons)
</div>
<div style={{ width: '100%', height: 160 }}>
<ResponsiveContainer>
<ComposedChart data={data} margin={{ top: 4, right: 8, bottom: 4, left: -18 }}>
<CartesianGrid stroke="var(--border)" strokeDasharray="3 3" vertical={false} />
<XAxis
dataKey="label"
tick={{ fill: 'var(--text-lo)', fontSize: 9, fontFamily: 'IBM Plex Mono' }}
interval={Math.floor(data.length / 12)}
tickLine={false}
/>
<YAxis
yAxisId="alt"
domain={[0, 90]}
tick={{ fill: 'var(--text-lo)', fontSize: 9, fontFamily: 'IBM Plex Mono' }}
tickLine={false}
tickFormatter={v => `${v}°`}
width={32}
/>
<YAxis
yAxisId="moon"
orientation="right"
domain={[0, 100]}
tick={{ fill: 'var(--text-lo)', fontSize: 9, fontFamily: 'IBM Plex Mono' }}
tickLine={false}
tickFormatter={v => `${v}%`}
width={28}
/>
<Tooltip
contentStyle={{
background: 'var(--bg-panel)',
border: '1px solid var(--border-hi)',
borderRadius: 4,
fontFamily: 'IBM Plex Mono',
fontSize: 11,
color: 'var(--text-hi)',
}}
formatter={(value: number, name: string) => {
if (name === 'alt') return [`${value}°`, 'Alt at midnight'];
if (name === 'moon') return [`${value}%`, 'Moon'];
return [value, name];
}}
/>
<Bar yAxisId="alt" dataKey="alt" radius={[1, 1, 0, 0]} maxBarSize={12}>
{data.map((entry, i) => (
<Cell key={i} fill={altColor(entry.alt)} fillOpacity={0.7} />
))}
</Bar>
<Line
yAxisId="moon"
type="monotone"
dataKey="moon"
stroke="#4d9de0"
strokeWidth={1}
dot={false}
strokeOpacity={0.5}
strokeDasharray="3 2"
/>
</ComposedChart>
</ResponsiveContainer>
</div>
<div style={{ display: 'flex', gap: 16, marginTop: 6, flexWrap: 'wrap' }}>
{[
{ color: 'var(--good)', label: '≥50° excellent' },
{ color: '#2ab8a0', label: '3050° good' },
{ color: 'var(--warn)', label: '1530° marginal' },
{ color: 'var(--muted)', label: '<15° poor' },
{ color: '#4d9de0', label: 'Moon %' },
].map(({ color, label }) => (
<div key={label} style={{ display: 'flex', alignItems: 'center', gap: 4 }}>
<div style={{ width: 10, height: 10, background: color, borderRadius: 2, opacity: 0.8 }} />
<span style={{ fontFamily: 'var(--font-mono)', fontSize: 10, color: 'var(--text-lo)' }}>{label}</span>
</div>
))}
</div>
</div>
);
}