bdd025cc-e207-46d7-b666-74cde8df4caa/research/lovable/chart.md

import * as React from "react"; import * as RechartsPrimitive from "recharts";

import { cn } from "@/lib/utils";

// Format: { THEME_NAME: CSS_SELECTOR } const THEMES = { light: "", dark: ".dark" } as const;

export type ChartConfig = { [k in string]: { label?: React.ReactNode; icon?: React.ComponentType; } & ({ color?: string; theme?: never } | { color?: never; theme: Record<keyof typeof THEMES, string> }); };

type ChartContextProps = { config: ChartConfig; };

const ChartContext = React.createContext<ChartContextProps | null>(null);

function useChart() { const context = React.useContext(ChartContext);

if (!context) { throw new Error("useChart must be used within a "); }

return context; }

const ChartContainer = React.forwardRef< HTMLDivElement, React.ComponentProps<"div"> & { config: ChartConfig; children: React.ComponentProps["children"]; }

(({ id, className, children, config, ...props }, ref) => { const uniqueId = React.useId(); const chartId = chart-${id || uniqueId.replace(/:/g, "")};

return ( <ChartContext.Provider value={{ config }}> <div data-chart={chartId} ref={ref} className={cn( "flex aspect-video justify-center text-xs [&.recharts-cartesian-axis-tick_text]:fill-muted-foreground [&.recharts-cartesian-grid_line[stroke='#ccc']]:stroke-border/50 [&.recharts-curve.recharts-tooltip-cursor]:stroke-border [&.recharts-dot[stroke='#fff']]:stroke-transparent [&.recharts-layer]:outline-none [&.recharts-polar-grid_[stroke='#ccc']]:stroke-border [&.recharts-radial-bar-background-sector]:fill-muted [&.recharts-rectangle.recharts-tooltip-cursor]:fill-muted [&.recharts-reference-line[stroke='#ccc']]:stroke-border [&.recharts-sector[stroke='#fff']]:stroke-transparent [&.recharts-sector]:outline-none [&_.recharts-surface]:outline-none", className, )} {...props} > <RechartsPrimitive.ResponsiveContainer>{children}</RechartsPrimitive.ResponsiveContainer> </ChartContext.Provider> ); }); ChartContainer.displayName = "Chart";

const ChartStyle = ({ id, config }: { id: string; config: ChartConfig }) => { const colorConfig = Object.entries(config).filter(([_, config]) => config.theme || config.color);

if (!colorConfig.length) { return null; }

return ( <style dangerouslySetInnerHTML={{ __html: Object.entries(THEMES) .map( ([theme, prefix]) => ${prefix} [data-chart=${id}] { ${colorConfig .map(([key, itemConfig]) => { const color = itemConfig.theme?.[theme as keyof typeof itemConfig.theme] || itemConfig.color; return color ? --color-${key}: ${color};: null; }) .join("\n")} }, ) .join("\n"), }} /> ); };

const ChartTooltip = RechartsPrimitive.Tooltip;

const ChartTooltipContent = React.forwardRef< HTMLDivElement, React.ComponentProps & React.ComponentProps<"div"> & { hideLabel?: boolean; hideIndicator?: boolean; indicator?: "line" | "dot" | "dashed"; nameKey?: string; labelKey?: string; }

( ( { active, payload, className, indicator = "dot", hideLabel = false, hideIndicator = false, label, labelFormatter, labelClassName, formatter, color, nameKey, labelKey, }, ref, ) => { const { config } = useChart();

const tooltipLabel = React.useMemo(() => {
  if (hideLabel || !payload?.length) {
    return null;
  }

  const [item] = payload;
  const key = `${labelKey || item.dataKey || item.name || "value"}`;
  const itemConfig = getPayloadConfigFromPayload(config, item, key);
  const value =
    !labelKey && typeof label === "string"
      ? config[label as keyof typeof config]?.label || label
      : itemConfig?.label;

  if (labelFormatter) {
    return <div className={cn("font-medium", labelClassName)}>{labelFormatter(value, payload)}</div>;
  }

  if (!value) {
    return null;
  }

  return <div className={cn("font-medium", labelClassName)}>{value}</div>;
}, [label, labelFormatter, payload, hideLabel, labelClassName, config, labelKey]);

if (!active || !payload?.length) {
  return null;
}

const nestLabel = payload.length === 1 && indicator !== "dot";

return (
  <div
    ref={ref}
    className={cn(
      "grid min-w-[8rem] items-start gap-1.5 rounded-lg border border-border/50 bg-background px-2.5 py-1.5 text-xs shadow-xl",
      className,
    )}
  >
    {!nestLabel ? tooltipLabel : null}
    <div className="grid gap-1.5">
      {payload.map((item, index) => {
        const key = `${nameKey || item.name || item.dataKey || "value"}`;
        const itemConfig = getPayloadConfigFromPayload(config, item, key);
        const indicatorColor = color || item.payload.fill || item.color;

        return (
          <div
            key={item.dataKey}
            className={cn(
              "flex w-full flex-wrap items-stretch gap-2 [&>svg]:h-2.5 [&>svg]:w-2.5 [&>svg]:text-muted-foreground",
              indicator === "dot" && "items-center",
            )}
          >
            {formatter && item?.value !== undefined && item.name ? (
              formatter(item.value, item.name, item, index, item.payload)
            ) : (
              <>
                {itemConfig?.icon ? (
                  <itemConfig.icon />
                ) : (
                  !hideIndicator && (
                    <div
                      className={cn("shrink-0 rounded-[2px] border-[--color-border] bg-[--color-bg]", {
                        "h-2.5 w-2.5": indicator === "dot",
                        "w-1": indicator === "line",
                        "w-0 border-[1.5px] border-dashed bg-transparent": indicator === "dashed",
                        "my-0.5": nestLabel && indicator === "dashed",
                      })}
                      style={
                        {
                          "--color-bg": indicatorColor,
                          "--color-border": indicatorColor,
                        } as React.CSSProperties
                      }
                    />
                  )
                )}
                <div
                  className={cn(
                    "flex flex-1 justify-between leading-none",
                    nestLabel ? "items-end" : "items-center",
                  )}
                >
                  <div className="grid gap-1.5">
                    {nestLabel ? tooltipLabel : null}
                    <span className="text-muted-foreground">{itemConfig?.label || item.name}</span>
                  </div>
                  {item.value && (
                    <span className="font-mono font-medium tabular-nums text-foreground">
                      {item.value.toLocaleString()}
                    </span>
                  )}
                </div>
              </>
            )}
          </div>
        );
      })}
    </div>
  </div>
);

}, ); ChartTooltipContent.displayName = "ChartTooltip";

const ChartLegend = RechartsPrimitive.Legend;

const ChartLegendContent = React.forwardRef< HTMLDivElement, React.ComponentProps<"div"> & Pick<RechartsPrimitive.LegendProps, "payload" | "verticalAlign"> & { hideIcon?: boolean; nameKey?: string; }

(({ className, hideIcon = false, payload, verticalAlign = "bottom", nameKey }, ref) => { const { config } = useChart();

if (!payload?.length) { return null; }

return ( <div ref={ref} className={cn("flex items-center justify-center gap-4", verticalAlign === "top" ? "pb-3" : "pt-3", className)} > {payload.map((item) => { const key = ${nameKey || item.dataKey || "value"}; const itemConfig = getPayloadConfigFromPayload(config, item, key);

    return (
      <div
        key={item.value}
        className={cn("flex items-center gap-1.5 [&>svg]:h-3 [&>svg]:w-3 [&>svg]:text-muted-foreground")}
      >
        {itemConfig?.icon && !hideIcon ? (
          <itemConfig.icon />
        ) : (
          <div
            className="h-2 w-2 shrink-0 rounded-[2px]"
            style={{
              backgroundColor: item.color,
            }}
          />
        )}
        {itemConfig?.label}
      </div>
    );
  })}
</div>

); }); ChartLegendContent.displayName = "ChartLegend";

// Helper to extract item config from a payload. function getPayloadConfigFromPayload(config: ChartConfig, payload: unknown, key: string) { if (typeof payload !== "object" || payload === null) { return undefined; }

const payloadPayload = "payload" in payload && typeof payload.payload === "object" && payload.payload !== null ? payload.payload : undefined;

let configLabelKey: string = key;

if (key in payload && typeof payload[key as keyof typeof payload] === "string") { configLabelKey = payload[key as keyof typeof payload] as string; } else if (payloadPayload && key in payloadPayload && typeof payloadPayload[key as keyof typeof payloadPayload] === "string") { configLabelKey = payloadPayload[key as keyof typeof payloadPayload] as string; }

return configLabelKey in config ? config[configLabelKey] : config[key as keyof typeof config]; }

export { ChartContainer, ChartTooltip, ChartTooltipContent, ChartLegend, ChartLegendContent, ChartStyle, };