"use client";

// biome-ignore lint/performance/noNamespaceImport: shadcn chart upstream convention
import * as React from "react";
// biome-ignore lint/performance/noNamespaceImport: recharts namespace required for typed primitives
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> }
  );
};

interface 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 <ChartContainer />");
  }

  return context;
}

function ChartContainer({
  id,
  className,
  children,
  config,
  ...props
}: React.ComponentProps<"div"> & {
  config: ChartConfig;
  children: React.ComponentProps<
    typeof RechartsPrimitive.ResponsiveContainer
  >["children"];
}) {
  const uniqueId = React.useId();
  const chartId = `chart-${id || uniqueId.replace(/:/g, "")}`;

  // Recharts 3.x ResponsiveContainer logs a "width(-1) height(-1)" warning on
  // every first client render — the sentinel value is set internally before
  // ResizeObserver has measured the parent, and the warning fires inside
  // Recharts before we can intervene. No mount-flag, useEffect, or rAF can
  // suppress it from the outside. Filtering the exact warning message at the
  // console layer is the pragmatic exit. Scoped to chart mounts so we don't
  // mute anything else.
  React.useEffect(() => {
    const original = console.warn;
    console.warn = (...args: unknown[]) => {
      const first = args[0];
      if (
        typeof first === "string" &&
        first.includes("width(-1) and height(-1) of chart")
      ) {
        return;
      }
      original.apply(console, args);
    };
    return () => {
      console.warn = original;
    };
  }, []);

  // Still gate the chart subtree on mount so it never renders during SSR
  // (Recharts' ResponsiveContainer needs window/ResizeObserver to exist).
  const [mounted, setMounted] = React.useState(false);
  React.useEffect(() => {
    setMounted(true);
  }, []);

  return (
    <ChartContext.Provider value={{ config }}>
      <div
        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-hidden [&_.recharts-polar-grid_[stroke='#ccc']]:stroke-border [&_.recharts-radial-bar-background-sector]:fill-muted [&_.recharts-rectangle.recharts-tooltip-cursor]:fill-white/[0.03] [&_.recharts-reference-line_[stroke='#ccc']]:stroke-border [&_.recharts-sector[stroke='#fff']]:stroke-transparent [&_.recharts-sector]:outline-hidden [&_.recharts-surface]:outline-hidden",
          className
        )}
        data-chart={chartId}
        data-slot="chart"
        {...props}
      >
        <ChartStyle config={config} id={chartId} />
        {mounted ? (
          // `minWidth={0}` + `minHeight={0}` silence Recharts' first-frame
          // "width(-1) height(-1)" warning while ResizeObserver has not yet
          // measured the parent. Without these, every chart logs that warning
          // on its initial client render — noisy in dev, still benign in prod.
          // The warning itself recommends this exact fix.
          <RechartsPrimitive.ResponsiveContainer
            height="100%"
            minHeight={0}
            minWidth={0}
            width="100%"
          >
            {children}
          </RechartsPrimitive.ResponsiveContainer>
        ) : null}
      </div>
    </ChartContext.Provider>
  );
}

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("")}
}
`
          )
          .join(""),
      }}
    />
  );
};

const ChartTooltip = RechartsPrimitive.Tooltip;

// Recharts injects payload/label at runtime, but its TS props omit them
// (PropertiesReadFromContext). Declare them explicitly so we don't lose
// type safety inside the tooltip body.
interface RechartsTooltipItem {
  color?: string;
  dataKey?: string | number;
  name?: string;
  payload?: { fill?: string };
  type?: string;
  value?: number | string;
}

type ChartTooltipContentProps = Omit<React.ComponentProps<"div">, "color"> & {
  active?: boolean;
  payload?: RechartsTooltipItem[];
  label?: React.ReactNode;
  labelFormatter?: (
    value: React.ReactNode,
    payload: RechartsTooltipItem[]
  ) => React.ReactNode;
  labelClassName?: string;
  formatter?: (
    value: unknown,
    name: unknown,
    item: RechartsTooltipItem,
    index: number,
    payload: unknown
  ) => React.ReactNode;
  color?: string;
  hideLabel?: boolean;
  hideIndicator?: boolean;
  indicator?: "line" | "dot" | "dashed";
  nameKey?: string;
  labelKey?: string;
};

function ChartTooltipContent({
  active,
  payload,
  className,
  indicator = "dot",
  hideLabel = false,
  hideIndicator = false,
  label,
  labelFormatter,
  labelClassName,
  formatter,
  color,
  nameKey,
  labelKey,
}: ChartTooltipContentProps) {
  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
      className={cn(
        "grid min-w-[8rem] items-start gap-1.5 rounded-lg border border-white/10 bg-[#0d1117] px-2.5 py-1.5 text-xs shadow-xl",
        className
      )}
    >
      {nestLabel ? null : tooltipLabel}
      <div className="grid gap-1.5">
        {payload
          .filter((item) => item.type !== "none")
          .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
                className={cn(
                  "flex w-full flex-wrap items-stretch gap-2 [&>svg]:h-2.5 [&>svg]:w-2.5 [&>svg]:text-neutral-400",
                  indicator === "dot" && "items-center"
                )}
                key={item.dataKey}
              >
                {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-neutral-400">
                          {itemConfig?.label || item.name}
                        </span>
                      </div>
                      {item.value && (
                        <span className="font-medium font-mono text-neutral-100 tabular-nums">
                          {item.value.toLocaleString()}
                        </span>
                      )}
                    </div>
                  </>
                )}
              </div>
            );
          })}
      </div>
    </div>
  );
}

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

  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 };