feat(front): add card and chart components for enhanced UI and data visualization

front/components/ui/chart/ChartCrosshair.vue

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+<script setup lang="ts">
+import type { BulletLegendItemInterface } from "@unovis/ts";
+import { omit } from "@unovis/ts";
+import { VisCrosshair, VisTooltip } from "@unovis/vue";
+import { type Component, createApp } from "vue";
+import { ChartTooltip } from ".";
+
+const props = withDefaults(
+  defineProps<{
+    colors: string[];
+    index: string;
+    items: BulletLegendItemInterface[];
+    customTooltip?: Component;
+  }>(),
+  {
+    colors: () => [],
+  },
+);
+
+// Use weakmap to store reference to each datapoint for Tooltip
+const wm = new WeakMap();
+function template(d: any) {
+  if (wm.has(d)) {
+    return wm.get(d);
+  } else {
+    const componentDiv = document.createElement("div");
+    const omittedData = Object.entries(omit(d, [props.index])).map(
+      ([key, value]) => {
+        const legendReference = props.items.find((i) => i.name === key);
+        return { ...legendReference, value };
+      },
+    );
+    const TooltipComponent = props.customTooltip ?? ChartTooltip;
+    createApp(TooltipComponent, {
+      title: d[props.index].toString(),
+      data: omittedData,
+    }).mount(componentDiv);
+    wm.set(d, componentDiv.innerHTML);
+    return componentDiv.innerHTML;
+  }
+}
+
+function color(d: unknown, i: number) {
+  return props.colors[i] ?? "transparent";
+}
+</script>
+
+<template>
+  <VisTooltip :horizontal-shift="20" :vertical-shift="20" />
+  <VisCrosshair :template="template" :color="color" />
+</template>

front/components/ui/chart/ChartLegend.vue

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+<script setup lang="ts">
+import type { BulletLegendItemInterface } from "@unovis/ts";
+import { BulletLegend } from "@unovis/ts";
+import { VisBulletLegend } from "@unovis/vue";
+import { nextTick, onMounted, ref } from "vue";
+import { buttonVariants } from "../button";
+
+const props = withDefaults(
+  defineProps<{ items: BulletLegendItemInterface[] }>(),
+  {
+    items: () => [],
+  },
+);
+
+const emits = defineEmits<{
+  legendItemClick: [d: BulletLegendItemInterface, i: number];
+  "update:items": [payload: BulletLegendItemInterface[]];
+}>();
+
+const elRef = ref<HTMLElement>();
+
+function keepStyling() {
+  const selector = `.${BulletLegend.selectors.item}`;
+  nextTick(() => {
+    const elements = elRef.value?.querySelectorAll(selector);
+    const classes = buttonVariants({ variant: "ghost", size: "sm" }).split(" ");
+    elements?.forEach((el) =>
+      el.classList.add(...classes, "!inline-flex", "!mr-2"),
+    );
+  });
+}
+
+onMounted(() => {
+  keepStyling();
+});
+
+function onLegendItemClick(d: BulletLegendItemInterface, i: number) {
+  emits("legendItemClick", d, i);
+  const isBulletActive = !props.items[i].inactive;
+  const isFilterApplied = props.items.some((i) => i.inactive);
+  if (isFilterApplied && isBulletActive) {
+    // reset filter
+    emits(
+      "update:items",
+      props.items.map((item) => ({ ...item, inactive: false })),
+    );
+  } else {
+    // apply selection, set other item as inactive
+    emits(
+      "update:items",
+      props.items.map((item) =>
+        item.name === d.name
+          ? { ...d, inactive: false }
+          : { ...item, inactive: true },
+      ),
+    );
+  }
+  keepStyling();
+}
+</script>
+
+<template>
+  <div
+    ref="elRef"
+    class="w-max"
+    :style="{
+      '--vis-legend-bullet-size': '16px',
+    }"
+  >
+    <VisBulletLegend :items="items" :on-legend-item-click="onLegendItemClick" />
+  </div>
+</template>

front/components/ui/chart/ChartSingleTooltip.vue

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+<script setup lang="ts">
+import type { BulletLegendItemInterface } from "@unovis/ts";
+import { omit } from "@unovis/ts";
+import { VisTooltip } from "@unovis/vue";
+import { type Component, createApp } from "vue";
+import { ChartTooltip } from ".";
+
+const props = defineProps<{
+  selector: string;
+  index: string;
+  items?: BulletLegendItemInterface[];
+  valueFormatter?: (tick: number, i?: number, ticks?: number[]) => string;
+  customTooltip?: Component;
+}>();
+
+// Use weakmap to store reference to each datapoint for Tooltip
+const wm = new WeakMap();
+function template(d: any, i: number, elements: (HTMLElement | SVGElement)[]) {
+  const valueFormatter = props.valueFormatter ?? ((tick: number) => `${tick}`);
+  if (props.index in d) {
+    if (wm.has(d)) {
+      return wm.get(d);
+    } else {
+      const componentDiv = document.createElement("div");
+      const omittedData = Object.entries(omit(d, [props.index])).map(
+        ([key, value]) => {
+          const legendReference = props.items?.find((i) => i.name === key);
+          return { ...legendReference, value: valueFormatter(value) };
+        },
+      );
+      const TooltipComponent = props.customTooltip ?? ChartTooltip;
+      createApp(TooltipComponent, {
+        title: d[props.index],
+        data: omittedData,
+      }).mount(componentDiv);
+      wm.set(d, componentDiv.innerHTML);
+      return componentDiv.innerHTML;
+    }
+  } else {
+    const data = d.data;
+
+    if (wm.has(data)) {
+      return wm.get(data);
+    } else {
+      const style = getComputedStyle(elements[i]);
+      const omittedData = [
+        {
+          name: data.name,
+          value: valueFormatter(data[props.index]),
+          color: style.fill,
+        },
+      ];
+      const componentDiv = document.createElement("div");
+      const TooltipComponent = props.customTooltip ?? ChartTooltip;
+      createApp(TooltipComponent, {
+        title: d[props.index],
+        data: omittedData,
+      }).mount(componentDiv);
+      wm.set(d, componentDiv.innerHTML);
+      return componentDiv.innerHTML;
+    }
+  }
+}
+</script>
+
+<template>
+  <VisTooltip
+    :horizontal-shift="20"
+    :vertical-shift="20"
+    :triggers="{
+      [selector]: template,
+    }"
+  />
+</template>

front/components/ui/chart/ChartTooltip.vue

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+<script setup lang="ts">
+import { Card, CardContent, CardHeader, CardTitle } from "../card";
+
+defineProps<{
+  title?: string;
+  data: {
+    name: string;
+    color: string;
+    value: any;
+  }[];
+}>();
+</script>
+
+<template>
+  <Card class="text-sm">
+    <CardHeader v-if="title" class="p-3 border-b">
+      <CardTitle>
+        {{ title }}
+      </CardTitle>
+    </CardHeader>
+    <CardContent class="p-3 min-w-[180px] flex flex-col gap-1">
+      <div v-for="(item, key) in data" :key="key" class="flex justify-between">
+        <div class="flex items-center">
+          <span class="w-2.5 h-2.5 mr-2">
+            <svg width="100%" height="100%" viewBox="0 0 30 30">
+              <path
+                d=" M 15 15 m -14, 0 a 14,14 0 1,1 28,0 a 14,14 0 1,1 -28,0"
+                :stroke="item.color"
+                :fill="item.color"
+                stroke-width="1"
+              />
+            </svg>
+          </span>
+          <span>{{ item.name }}</span>
+        </div>
+        <span class="font-semibold ml-4">{{ item.value }}</span>
+      </div>
+    </CardContent>
+  </Card>
+</template>

front/components/ui/chart/index.ts

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+export { default as ChartCrosshair } from "./ChartCrosshair.vue";
+export { default as ChartLegend } from "./ChartLegend.vue";
+export { default as ChartSingleTooltip } from "./ChartSingleTooltip.vue";
+export { default as ChartTooltip } from "./ChartTooltip.vue";
+
+export function defaultColors(count: number = 3) {
+  const quotient = Math.floor(count / 2);
+  const remainder = count % 2;
+
+  const primaryCount = quotient + remainder;
+  const secondaryCount = quotient;
+  return [
+    ...Array.from(new Array(primaryCount).keys()).map(
+      (i) => `hsl(var(--vis-primary-color) / ${1 - (1 / primaryCount) * i})`,
+    ),
+    ...Array.from(new Array(secondaryCount).keys()).map(
+      (i) =>
+        `hsl(var(--vis-secondary-color) / ${1 - (1 / secondaryCount) * i})`,
+    ),
+  ];
+}