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1"use client";
2
3import * as React from "react";
4import * as RechartsPrimitive from "recharts";
5
6import { cn } from "@/lib/utils";
7
8// Format: { THEME_NAME: CSS_SELECTOR }
9const THEMES = { light: "", dark: ".dark" } as const;
10
11export type ChartConfig = {
12 [k in string]: {
13 label?: React.ReactNode;
14 icon?: React.ComponentType;
15 } & (
16 | { color?: string; theme?: never }
17 | { color?: never; theme: Record<keyof typeof THEMES, string> }
18 );
19};
20
21type ChartContextProps = {
22 config: ChartConfig;
23};
24
25const ChartContext = React.createContext<ChartContextProps | null>(null);
26
27function useChart() {
28 const context = React.useContext(ChartContext);
29
30 if (!context) {
31 throw new Error("useChart must be used within a <ChartContainer />");
32 }
33
34 return context;
35}
36
37const ChartContainer = React.forwardRef<
38 HTMLDivElement,
39 React.ComponentProps<"div"> & {
40 config: ChartConfig;
41 children: React.ComponentProps<
42 typeof RechartsPrimitive.ResponsiveContainer
43 >["children"];
44 }
45>(({ id, className, children, config, ...props }, ref) => {
46 const uniqueId = React.useId();
47 const chartId = `chart-${id || uniqueId.replace(/:/g, "")}`;
48
49 return (
50 <ChartContext.Provider value={{ config }}>
51 <div
52 data-chart={chartId}
53 ref={ref}
54 className={cn(
55 "flex aspect-video justify-center text-xs [&_.recharts-cartesian-axis-tick_text]:fill-muted-foreground [&_.recharts-cartesian-grid_line[stroke='#ccc']]:stroke-border/50 [&_.recharts-curve.recharts-tooltip-cursor]:stroke-border [&_.recharts-dot[stroke='#fff']]:stroke-transparent [&_.recharts-layer]:outline-hidden [&_.recharts-polar-grid_[stroke='#ccc']]:stroke-border [&_.recharts-radial-bar-background-sector]:fill-muted [&_.recharts-rectangle.recharts-tooltip-cursor]:fill-muted [&_.recharts-reference-line_[stroke='#ccc']]:stroke-border [&_.recharts-sector[stroke='#fff']]:stroke-transparent [&_.recharts-sector]:outline-hidden [&_.recharts-surface]:outline-hidden",
56 className
57 )}
58 {...props}
59 >
60 <ChartStyle id={chartId} config={config} />
61 <RechartsPrimitive.ResponsiveContainer>
62 {children}
63 </RechartsPrimitive.ResponsiveContainer>
64 </div>
65 </ChartContext.Provider>
66 );
67});
68ChartContainer.displayName = "Chart";
69
70const ChartStyle = ({ id, config }: { id: string; config: ChartConfig }) => {
71 const colorConfig = Object.entries(config).filter(
72 ([_, config]) => config.theme || config.color
73 );
74
75 if (!colorConfig.length) {
76 return null;
77 }
78
79 return (
80 <style
81 dangerouslySetInnerHTML={{
82 __html: Object.entries(THEMES)
83 .map(
84 ([theme, prefix]) => `
85${prefix} [data-chart=${id}] {
86${colorConfig
87 .map(([key, itemConfig]) => {
88 const color =
89 itemConfig.theme?.[theme as keyof typeof itemConfig.theme] ||
90 itemConfig.color;
91 return color ? ` --color-${key}: ${color};` : null;
92 })
93 .join("\n")}
94}
95`
96 )
97 .join("\n"),
98 }}
99 />
100 );
101};
102
103const ChartTooltip = RechartsPrimitive.Tooltip;
104
105const ChartTooltipContent = React.forwardRef<
106 HTMLDivElement,
107 React.ComponentProps<typeof RechartsPrimitive.Tooltip> &
108 React.ComponentProps<"div"> & {
109 hideLabel?: boolean;
110 hideIndicator?: boolean;
111 indicator?: "line" | "dot" | "dashed";
112 nameKey?: string;
113 labelKey?: string;
114 }
115>(
116 (
117 {
118 active,
119 payload,
120 className,
121 indicator = "dot",
122 hideLabel = false,
123 hideIndicator = false,
124 label,
125 labelFormatter,
126 labelClassName,
127 formatter,
128 color,
129 nameKey,
130 labelKey,
131 },
132 ref
133 ) => {
134 const { config } = useChart();
135
136 const tooltipLabel = React.useMemo(() => {
137 if (hideLabel || !payload?.length) {
138 return null;
139 }
140
141 const [item] = payload;
142 const key = `${labelKey || item.dataKey || item.name || "value"}`;
143 const itemConfig = getPayloadConfigFromPayload(config, item, key);
144 const value =
145 !labelKey && typeof label === "string"
146 ? config[label as keyof typeof config]?.label || label
147 : itemConfig?.label;
148
149 if (labelFormatter) {
150 return (
151 <div className={cn("font-medium", labelClassName)}>
152 {labelFormatter(value, payload)}
153 </div>
154 );
155 }
156
157 if (!value) {
158 return null;
159 }
160
161 return <div className={cn("font-medium", labelClassName)}>{value}</div>;
162 }, [
163 label,
164 labelFormatter,
165 payload,
166 hideLabel,
167 labelClassName,
168 config,
169 labelKey,
170 ]);
171
172 if (!active || !payload?.length) {
173 return null;
174 }
175
176 const nestLabel = payload.length === 1 && indicator !== "dot";
177
178 return (
179 <div
180 ref={ref}
181 className={cn(
182 "grid min-w-32 items-start gap-1.5 rounded-lg border border-border/50 bg-background px-2.5 py-1.5 text-xs shadow-xl",
183 className
184 )}
185 >
186 {!nestLabel ? tooltipLabel : null}
187 <div className="grid gap-1.5">
188 {payload.map((item, index) => {
189 const key = `${nameKey || item.name || item.dataKey || "value"}`;
190 const itemConfig = getPayloadConfigFromPayload(config, item, key);
191 const indicatorColor = color || item.payload.fill || item.color;
192
193 return (
194 <div
195 key={item.dataKey}
196 className={cn(
197 "flex w-full flex-wrap items-stretch gap-2 [&>svg]:h-2.5 [&>svg]:w-2.5 [&>svg]:text-muted-foreground",
198 indicator === "dot" && "items-center"
199 )}
200 >
201 {formatter && item?.value !== undefined && item.name ? (
202 formatter(item.value, item.name, item, index, item.payload)
203 ) : (
204 <>
205 {itemConfig?.icon ? (
206 <itemConfig.icon />
207 ) : (
208 !hideIndicator && (
209 <div
210 className={cn(
211 "shrink-0 rounded-[2px] border-border bg-(--color-bg)",
212 {
213 "h-2.5 w-2.5": indicator === "dot",
214 "w-1": indicator === "line",
215 "w-0 border-[1.5px] border-dashed bg-transparent":
216 indicator === "dashed",
217 "my-0.5": nestLabel && indicator === "dashed",
218 }
219 )}
220 style={
221 {
222 "--color-bg": indicatorColor,
223 "--color-border": indicatorColor,
224 } as React.CSSProperties
225 }
226 />
227 )
228 )}
229 <div
230 className={cn(
231 "flex flex-1 justify-between leading-none",
232 nestLabel ? "items-end" : "items-center"
233 )}
234 >
235 <div className="grid gap-1.5">
236 {nestLabel ? tooltipLabel : null}
237 <span className="text-muted-foreground">
238 {itemConfig?.label || item.name}
239 </span>
240 </div>
241 {item.value && (
242 <span className="font-mono font-medium tabular-nums text-foreground">
243 {item.value.toLocaleString()}
244 </span>
245 )}
246 </div>
247 </>
248 )}
249 </div>
250 );
251 })}
252 </div>
253 </div>
254 );
255 }
256);
257ChartTooltipContent.displayName = "ChartTooltip";
258
259const ChartLegend = RechartsPrimitive.Legend;
260
261const ChartLegendContent = React.forwardRef<
262 HTMLDivElement,
263 React.ComponentProps<"div"> &
264 Pick<RechartsPrimitive.LegendProps, "payload" | "verticalAlign"> & {
265 hideIcon?: boolean;
266 nameKey?: string;
267 }
268>(
269 (
270 { className, hideIcon = false, payload, verticalAlign = "bottom", nameKey },
271 ref
272 ) => {
273 const { config } = useChart();
274
275 if (!payload?.length) {
276 return null;
277 }
278
279 return (
280 <div
281 ref={ref}
282 className={cn(
283 "flex items-center justify-center gap-4",
284 verticalAlign === "top" ? "pb-3" : "pt-3",
285 className
286 )}
287 >
288 {payload.map((item) => {
289 const key = `${nameKey || item.dataKey || "value"}`;
290 const itemConfig = getPayloadConfigFromPayload(config, item, key);
291
292 return (
293 <div
294 key={item.value}
295 className={cn(
296 "flex items-center gap-1.5 [&>svg]:h-3 [&>svg]:w-3 [&>svg]:text-muted-foreground"
297 )}
298 >
299 {itemConfig?.icon && !hideIcon ? (
300 <itemConfig.icon />
301 ) : (
302 <div
303 className="h-2 w-2 shrink-0 rounded-[2px]"
304 style={{
305 backgroundColor: item.color,
306 }}
307 />
308 )}
309 {itemConfig?.label}
310 </div>
311 );
312 })}
313 </div>
314 );
315 }
316);
317ChartLegendContent.displayName = "ChartLegend";
318
319// Helper to extract item config from a payload.
320function getPayloadConfigFromPayload(
321 config: ChartConfig,
322 payload: unknown,
323 key: string
324) {
325 if (typeof payload !== "object" || payload === null) {
326 return undefined;
327 }
328
329 const payloadPayload =
330 "payload" in payload &&
331 typeof payload.payload === "object" &&
332 payload.payload !== null
333 ? payload.payload
334 : undefined;
335
336 let configLabelKey: string = key;
337
338 if (
339 key in payload &&
340 typeof payload[key as keyof typeof payload] === "string"
341 ) {
342 configLabelKey = payload[key as keyof typeof payload] as string;
343 } else if (
344 payloadPayload &&
345 key in payloadPayload &&
346 typeof payloadPayload[key as keyof typeof payloadPayload] === "string"
347 ) {
348 configLabelKey = payloadPayload[
349 key as keyof typeof payloadPayload
350 ] as string;
351 }
352
353 return configLabelKey in config
354 ? config[configLabelKey]
355 : config[key as keyof typeof config];
356}
357
358export {
359 ChartContainer,
360 ChartTooltip,
361 ChartTooltipContent,
362 ChartLegend,
363 ChartLegendContent,
364 ChartStyle,
365};