better-auth/examples/nuxt-example/components/ui/chart-area/AreaChart.vue

<script setup lang="ts" generic="T extends Record<string, any>">
import { type BulletLegendItemInterface, CurveType } from "@unovis/ts";
import { type Component, computed, ref } from "vue";
import { useMounted } from "@vueuse/core";
import { useId } from "radix-vue";
import type { BaseChartProps } from ".";
import { defaultColors } from "@/components/ui/chart";

const props = withDefaults(
	defineProps<
		BaseChartProps<T> & {
			/**
			 * Render custom tooltip component.
			 */
			customTooltip?: Component;
			/**
			 * Type of curve
			 */
			curveType?: CurveType;
			/**
			 * Controls the visibility of gradient.
			 * @default true
			 */
			showGradiant?: boolean;
		}
	>(),
	{
		curveType: CurveType.MonotoneX,
		filterOpacity: 0.2,
		margin: () => ({ top: 0, bottom: 0, left: 0, right: 0 }),
		showXAxis: true,
		showYAxis: true,
		showTooltip: true,
		showLegend: true,
		showGridLine: true,
		showGradiant: true,
	},
);

const emits = defineEmits<{
	legendItemClick: [d: BulletLegendItemInterface, i: number];
}>();

type KeyOfT = Extract<keyof T, string>;
type Data = (typeof props.data)[number];

const chartRef = useId();

const index = computed(() => props.index as KeyOfT);
const colors = computed(() =>
	props.colors?.length ? props.colors : defaultColors(props.categories.length),
);

const legendItems = ref<BulletLegendItemInterface[]>(
	props.categories.map((category, i) => ({
		name: category,
		color: colors.value[i],
		inactive: false,
	})),
);

const isMounted = useMounted();

function handleLegendItemClick(d: BulletLegendItemInterface, i: number) {
	emits("legendItemClick", d, i);
}
</script>

<template>
  <div :class="cn('w-full h-[400px] flex flex-col items-end', $attrs.class ?? '')">
    <ChartLegend v-if="showLegend" v-model:items="legendItems" @legend-item-click="handleLegendItemClick" />

    <VisXYContainer :style="{ height: isMounted ? '100%' : 'auto' }" :margin="{ left: 20, right: 20 }" :data="data">
      <svg width="0" height="0">
        <defs>
          <linearGradient v-for="(color, i) in colors" :id="`${chartRef}-color-${i}`" :key="i" x1="0" y1="0" x2="0" y2="1">
            <template v-if="showGradiant">
              <stop offset="5%" :stop-color="color" stop-opacity="0.4" />
              <stop offset="95%" :stop-color="color" stop-opacity="0" />
            </template>
            <template v-else>
              <stop offset="0%" :stop-color="color" />
            </template>
          </linearGradient>
        </defs>
      </svg>

      <ChartCrosshair v-if="showTooltip" :colors="colors" :items="legendItems" :index="index" :custom-tooltip="customTooltip" />

      <template v-for="(category, i) in categories" :key="category">
        <VisArea
          :x="(d: Data, i: number) => i"
          :y="(d: Data) => d[category]"
          color="auto"
          :curve-type="curveType"
          :attributes="{
            [Area.selectors.area]: {
              fill: `url(#${chartRef}-color-${i})`,
            },
          }"
          :opacity="legendItems.find(item => item.name === category)?.inactive ? filterOpacity : 1"
        />
      </template>

      <template v-for="(category, i) in categories" :key="category">
        <VisLine
          :x="(d: Data, i: number) => i"
          :y="(d: Data) => d[category]"
          :color="colors[i]"
          :curve-type="curveType"
          :attributes="{
            [Line.selectors.line]: {
              opacity: legendItems.find(item => item.name === category)?.inactive ? filterOpacity : 1,
            },
          }"
        />
      </template>

      <VisAxis
        v-if="showXAxis"
        type="x"
        :tick-format="xFormatter ?? ((v: number) => data[v]?.[index])"
        :grid-line="false"
        :tick-line="false"
        tick-text-color="hsl(var(--vis-text-color))"
      />
      <VisAxis
        v-if="showYAxis"
        type="y"
        :tick-line="false"
        :tick-format="yFormatter"
        :domain-line="false"
        :grid-line="showGridLine"
        :attributes="{
          [Axis.selectors.grid]: {
            class: 'text-muted',
          },
        }"
        tick-text-color="hsl(var(--vis-text-color))"
      />

      <slot />
    </VisXYContainer>
  </div>
</template>