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Bar,
CartesianGrid,
ComposedChart,
Line,
ReferenceLine,
XAxis,
YAxis,
} from "recharts";
import { ChartContainer, ChartTooltip } from "@/ahuora-design-system/ui/chart";
import type { DrillbackHandler, ParsedChartDataset } from "../model/types";
import { numberValue } from "../model/valueParsing";
import { chartTitle } from "./chartData";
import {
cashFlowAxisUnit,
cashFlowLegendLabel,
cashFlowRenderingMetadata,
cashFlowXDomain,
formatCompactAxisTick,
formatYearAxisTick,
mergeAssumptions,
} from "./chartFormatters";
import { cashFlowChartConfig } from "./constants";
import { EconomicsChartTooltip } from "./EconomicsChartTooltip";
export function CashFlowChart({
dataset,
onDrillback,
}: {
dataset: ParsedChartDataset;
onDrillback: DrillbackHandler;
}) {
const annualSeries = dataset.series[0];
const cumulativeSeries = dataset.series[1];
const paybackYears =
cashFlowRenderingMetadata(dataset.rendering_metadata)?.payback_years ??
null;
const rows =
annualSeries?.points.map((annualPoint, index) => {
const cumulativePoint = cumulativeSeries?.points[index];
return {
year: numberValue(annualPoint.metadata.year) ?? index,
annualNetCashFlow: annualPoint.value,
cumulativeDiscountedCashFlow: cumulativePoint?.value ?? null,
sourceRowId: annualPoint.source_row?.id,
sourceRowKey: annualPoint.source_row?.row_key,
unit: annualPoint.unit || cumulativePoint?.unit || "",
assumptions: mergeAssumptions([
...annualPoint.assumptions,
...(cumulativePoint?.assumptions ?? []),
]),
warningRefs: [
...annualPoint.warning_refs,
...(cumulativePoint?.warning_refs ?? []),
],
};
}) ?? [];
const xDomain = cashFlowXDomain(rows, paybackYears);
const yAxisLabel = `Cash flow (${cashFlowAxisUnit(rows)})`;
return (
<div className="flex h-full flex-col">
<div
className="sr-only"
aria-label="Cash-flow numeric x-axis configuration"
data-axis-type="number"
data-domain={`${xDomain[0]},${xDomain[1]}`}
data-payback-x={paybackYears ?? ""}
/>
<div className="sr-only" aria-label="Cash-flow x-axis label">
Year
</div>
<div className="sr-only" aria-label="Cash-flow y-axis label">
{yAxisLabel}
</div>
<ChartContainer
config={cashFlowChartConfig}
className="min-h-0 w-full flex-1"
aria-label={`Graph ${chartTitle(dataset)}`}
>
<ComposedChart
data={rows}
margin={{ left: 12, right: 28, top: 16, bottom: 18 }}
>
<CartesianGrid vertical={false} strokeOpacity={0.35} />
<XAxis
dataKey="year"
type="number"
domain={xDomain}
allowDecimals={false}
tickFormatter={formatYearAxisTick}
tickLine={false}
axisLine={false}
label={{
value: "Year",
position: "insideBottom",
offset: -4,
}}
/>
<YAxis
width={72}
tickFormatter={formatCompactAxisTick}
tickLine={false}
axisLine={false}
label={{
value: yAxisLabel,
angle: -90,
position: "insideLeft",
offset: 4,
}}
/>
<ReferenceLine y={0} stroke="hsl(var(--muted-foreground))" />
{paybackYears != null && (
<ReferenceLine
x={paybackYears}
stroke="hsl(var(--primary))"
strokeDasharray="4 4"
/>
)}
<ChartTooltip content={<EconomicsChartTooltip />} />
<Bar
dataKey="annualNetCashFlow"
name="Annual net cash flow"
fill="var(--color-annualNetCashFlow)"
onClick={(data) => onDrillback(data?.sourceRowId)}
/>
<Line
type="monotone"
dataKey="cumulativeDiscountedCashFlow"
name="Cumulative discounted cash flow"
stroke="var(--color-cumulativeDiscountedCashFlow)"
strokeWidth={2}
dot={{ r: 3 }}
/>
</ComposedChart>
</ChartContainer>
<CashFlowLegend />
</div>
);
}
function CashFlowLegend() {
return (
<div className="mt-3 flex flex-wrap items-center justify-center gap-x-4 gap-y-1 text-sm text-muted-foreground">
{(
[
["annualNetCashFlow", "hsl(var(--chart-1))"],
["cumulativeDiscountedCashFlow", "hsl(var(--chart-2))"],
] as const
).map(([seriesKey, color]) => (
<div key={seriesKey} className="flex items-center gap-1.5">
<span
className="size-3 rounded-full"
style={{ backgroundColor: color }}
aria-hidden="true"
/>
<span>{cashFlowLegendLabel(seriesKey)}</span>
</div>
))}
</div>
);
}
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