"use client"

import * as React from "react"

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

interface MetricTrendProps extends React.HTMLAttributes<HTMLDivElement> {
  label: string
  value: string | number
  change: number
  comparisonLabel?: string
  trend?: "up" | "down" | "neutral"
  trendData?: number[]
  trendLine?: React.ReactNode
}

const defaultTrend = [14, 18, 15, 20, 22, 21, 26, 28]

function getTrendPath(values: number[]) {
  if (values.length < 2) return ""
  const width = 120
  const height = 40
  const min = Math.min(...values)
  const max = Math.max(...values)
  const range = max - min || 1

  return values
    .map((value, index) => {
      const x = (index / (values.length - 1)) * width
      const y = height - ((value - min) / range) * height
      return `${index === 0 ? "M" : "L"} ${x} ${y}`
    })
    .join(" ")
}

function TrendIcon({ trend }: { trend: "up" | "down" | "neutral" }) {
  if (trend === "up") {
    return (
      <svg viewBox="0 0 16 16" className="h-3.5 w-3.5" aria-hidden>
        <path
          d="M4 10l4-4 4 4"
          fill="none"
          stroke="currentColor"
          strokeWidth="1.5"
          strokeLinecap="round"
          strokeLinejoin="round"
        />
      </svg>
    )
  }

  if (trend === "down") {
    return (
      <svg viewBox="0 0 16 16" className="h-3.5 w-3.5" aria-hidden>
        <path
          d="M4 6l4 4 4-4"
          fill="none"
          stroke="currentColor"
          strokeWidth="1.5"
          strokeLinecap="round"
          strokeLinejoin="round"
        />
      </svg>
    )
  }

  return (
    <svg viewBox="0 0 16 16" className="h-3.5 w-3.5" aria-hidden>
      <path
        d="M4 8h8"
        fill="none"
        stroke="currentColor"
        strokeWidth="1.5"
        strokeLinecap="round"
      />
    </svg>
  )
}

const MetricTrend = React.forwardRef<HTMLDivElement, MetricTrendProps>(
  (
    {
      label,
      value,
      change,
      comparisonLabel = "vs last week",
      trend,
      trendData,
      trendLine,
      className,
      ...props
    },
    ref
  ) => {
    const resolvedTrend = trend
      ? trend
      : change > 0
      ? "up"
      : change < 0
      ? "down"
      : "neutral"

    const trendClass =
      resolvedTrend === "up"
        ? "text-primary"
        : resolvedTrend === "down"
        ? "text-muted-foreground"
        : "text-foreground"

    const values = trendData && trendData.length > 1 ? trendData : defaultTrend
    const trendPath = getTrendPath(values)

    return (
      <div
        ref={ref}
        className={cn(
          "flex flex-col gap-4 rounded-2xl border border-border bg-card p-6",
          className
        )}
        {...props}
      >
        <div className="flex flex-wrap items-start justify-between gap-4">
          <div className="space-y-2">
            <p className="text-sm font-medium text-muted-foreground">{label}</p>
            <p className="text-3xl font-semibold text-foreground tabular-nums">
              {value}
            </p>
          </div>
          <div
            className={cn(
              "inline-flex items-center gap-1 rounded-full border border-border bg-muted px-2.5 py-1 text-xs font-semibold",
              trendClass
            )}
          >
            <TrendIcon trend={resolvedTrend} />
            {Math.abs(change).toFixed(1)}%
          </div>
        </div>
        <div className="flex flex-wrap items-end justify-between gap-4">
          <div className="h-12 w-full max-w-[160px]">
            {trendLine ? (
              trendLine
            ) : (
              <svg
                viewBox="0 0 120 40"
                className="h-full w-full text-primary"
                preserveAspectRatio="none"
                aria-hidden
              >
                <path
                  d={trendPath}
                  fill="none"
                  stroke="currentColor"
                  strokeWidth="2"
                  strokeLinecap="round"
                  strokeLinejoin="round"
                />
              </svg>
            )}
          </div>
          <p className="text-xs text-muted-foreground">{comparisonLabel}</p>
        </div>
      </div>
    )
  }
)

MetricTrend.displayName = "MetricTrend"

export { MetricTrend }
export type { MetricTrendProps }
Metric Trend

Dependencies

Files

Installation
