feat: add toast component (#644)

#### What type of PR is this?

/kind feature
/milestone 2.0

#### What this PR does / why we need it:

添加 Toast 组件。

特性：

1. 支持相同消息合并。
2. 支持鼠标悬停。

使用方式：

```vue
import { Toast } from '@halo-dev/components'

Toast.success("Hello", { //props })
Toast.info("Hello", { //props })
Toast.warning("Hello", { //props })
Toast.error("Hello", { //props })
```

props：

```ts
export interface ToastProps {
  type?: Type;
  content?: string;
  duration?: number;
  closable?: boolean;
  frozenOnHover?: boolean;
  count?: 0;
  onClose?: () => void;
}
```

Toast 方法不仅可以在 Vue 单组件中使用，理论上在任何地方均可使用。

#### Which issue(s) this PR fixes:

Fixes https://github.com/halo-dev/halo/issues/2534

#### Screenshots:

<img width="752" alt="image" src="https://user-images.githubusercontent.com/21301288/196099183-09e64daf-0077-4373-9603-5d4349dfce3d.png">

#### Special notes for your reviewer:

/cc @halo-dev/sig-halo-console 

测试方式：

https://halo-admin-ui-git-fork-ruibaby-feat-toast-component-halo-dev.vercel.app/story/src-components-toast-toast-story-vue?variantId=_default

测试功能是否正常。

#### Does this PR introduce a user-facing change?

```release-note
添加 Toast 组件
```

packages/components/src/components.ts

@@ -20,3 +20,4 @@ export * from "./components/codemirror";
 export * from "./components/empty";
 export * from "./components/status";
 export * from "./components/entity";
+export * from "./components/toast";

packages/components/src/components/toast/Toast.story.vue

@@ -0,0 +1,39 @@
+<script lang="ts" setup>
+import { VButton } from "../button";
+import { VSpace } from "../space";
+import { Toast } from "./toast-manager";
+import type { Type } from "./interface";
+
+function handleShowToast(type: Type, content: string) {
+  Toast[type](content);
+}
+</script>
+<template>
+  <Story title="Toast">
+    <VSpace>
+      <VButton type="primary" @click="handleShowToast('success', 'Hello Halo')">
+        成功
+      </VButton>
+      <VButton
+        type="secondary"
+        @click="handleShowToast('info', '这是一个提示')"
+      >
+        提示
+      </VButton>
+
+      <VButton
+        type="default"
+        @click="handleShowToast('warning', '这是一个警告提示')"
+      >
+        警告
+      </VButton>
+
+      <VButton
+        type="danger"
+        @click="handleShowToast('error', '这是一个错误提示')"
+      >
+        错误
+      </VButton>
+    </VSpace>
+  </Story>
+</template>

packages/components/src/components/toast/Toast.vue

@@ -0,0 +1,167 @@
+<script lang="ts" setup>
+import type { Type } from "./interface";
+import { computed, onMounted, ref, watchEffect } from "vue";
+import {
+  IconCheckboxCircle,
+  IconErrorWarning,
+  IconForbidLine,
+  IconInformation,
+  IconClose,
+} from "@/icons/icons";
+
+const props = withDefaults(
+  defineProps<{
+    type?: Type;
+    content?: string;
+    duration?: number;
+    closable?: boolean;
+    frozenOnHover?: boolean;
+    count?: 0;
+    onClose?: () => void;
+  }>(),
+  {
+    type: "success",
+    content: "",
+    duration: 3000,
+    closable: true,
+    frozenOnHover: true,
+    count: 0,
+    onClose: undefined,
+  }
+);
+
+const timer = ref();
+
+const emit = defineEmits<{
+  (event: "close"): void;
+}>();
+
+const icons = {
+  success: {
+    icon: IconCheckboxCircle,
+    color: "text-green-500",
+  },
+  info: {
+    icon: IconInformation,
+    color: "text-sky-500",
+  },
+  warning: {
+    icon: IconErrorWarning,
+    color: "text-orange-500",
+  },
+  error: {
+    icon: IconForbidLine,
+    color: "text-red-500",
+  },
+};
+
+const icon = computed(() => icons[props.type]);
+
+const createTimer = () => {
+  if (props.duration < 0) return;
+  timer.value = setTimeout(() => {
+    close();
+  }, props.duration);
+};
+
+const clearTimer = () => {
+  clearTimeout(timer.value);
+};
+
+const close = () => {
+  emit("close");
+};
+
+const handleMouseEnter = () => {
+  if (!props.frozenOnHover) {
+    return;
+  }
+  clearTimer();
+};
+
+const handleMouseLeave = () => {
+  if (!props.frozenOnHover) {
+    return;
+  }
+  createTimer();
+};
+
+watchEffect(() => {
+  if (props.count > 0) {
+    clearTimer();
+    createTimer();
+  }
+});
+
+onMounted(createTimer);
+
+defineExpose({ close });
+</script>
+
+<template>
+  <transition
+    appear
+    enter-active-class="transform ease-out duration-300 transition"
+    enter-from-class="translate-x-0 -translate-y-2"
+    enter-to-class="translate-y-0"
+    leave-active-class="transition ease-in duration-100"
+    leave-from-class="opacity-100"
+    leave-to-class="opacity-0"
+  >
+    <div
+      class="toast-wrapper"
+      @mouseenter="handleMouseEnter"
+      @mouseleave="handleMouseLeave"
+    >
+      <div class="toast-body">
+        <div class="toast-icon">
+          <component :is="icon.icon" :class="[icon.color]" />
+        </div>
+        <div class="toast-content">
+          <div class="toast-description">
+            <slot>{{ content }}</slot>
+          </div>
+        </div>
+        <div v-if="closable" class="toast-control">
+          <IconClose class="" @click="close" />
+        </div>
+      </div>
+      <div v-if="count" class="toast-count">
+        <span>{{ count }}</span>
+      </div>
+    </div>
+  </transition>
+</template>
+<style lang="scss">
+.toast-container {
+  @apply fixed pointer-events-none flex flex-col box-border transition-all w-full left-0 top-0 items-center justify-center p-4 gap-3;
+
+  .toast-wrapper {
+    @apply inline-block max-w-xs z-50 pointer-events-auto relative;
+  }
+
+  .toast-body {
+    @apply cursor-pointer flex items-center px-2.5 py-2 overflow-hidden bg-white shadow hover:shadow-md transition-all rounded gap-2;
+  }
+
+  .toast-content {
+    @apply text-sm flex flex-col gap-1;
+  }
+
+  .toast-description {
+    @apply text-gray-800;
+  }
+
+  .toast-control {
+    @apply text-gray-600 hover:text-gray-900 transition-all cursor-pointer rounded-full hover:bg-gray-100 p-0.5;
+  }
+
+  .toast-count {
+    @apply bg-red-500 rounded-full absolute -right-1 -top-1 w-4 h-4 flex items-center justify-center;
+
+    span {
+      @apply text-[0.7rem] text-white;
+    }
+  }
+}
+</style>

packages/components/src/components/toast/index.ts

@@ -0,0 +1 @@
+export { Toast } from "./toast-manager";

packages/components/src/components/toast/interface.ts

@@ -0,0 +1,11 @@
+export type Type = "success" | "info" | "warning" | "error";
+
+export interface ToastProps {
+  type?: Type;
+  content?: string;
+  duration?: number;
+  closable?: boolean;
+  frozenOnHover?: boolean;
+  count?: 0;
+  onClose?: () => void;
+}

packages/components/src/components/toast/toast-manager.ts

@@ -0,0 +1,131 @@
+import ToastComponent from "./Toast.vue";
+import { createVNode, render, type Component, type VNode } from "vue";
+import type { ToastProps } from "./interface";
+
+export type ToastApiProps = Omit<ToastProps, "type" | "content">;
+
+export interface ToastInstance {
+  id: string;
+  vnode: VNode;
+}
+
+export type ToastApi = (
+  content: string,
+  props?: ToastApiProps
+) => ToastInstance;
+
+export interface ToastEntry {
+  (props: ToastProps): ToastInstance;
+  info: ToastApi;
+  success: ToastApi;
+  error: ToastApi;
+  warning: ToastApi;
+}
+
+let index = 0;
+
+const instances: ToastInstance[] = [];
+
+const defaultProps: ToastProps = {
+  frozenOnHover: true,
+  duration: 3000,
+  count: 0,
+};
+
+const toast: ToastEntry = (userProps: ToastProps) => {
+  const id = "toast-" + index++;
+
+  const props = {
+    ...defaultProps,
+    ...userProps,
+    id,
+  };
+
+  let container = document.body.querySelector(".toast-container");
+  if (!container) {
+    container = document.createElement("div");
+    container.className = "toast-container";
+    document.body.appendChild(container);
+  }
+
+  // Grouping toasts
+  if (instances.length > 0) {
+    const instance = instances.find((item) => {
+      const { vnode } = item;
+      if (vnode?.props) {
+        return (
+          vnode.props.content === props.content &&
+          vnode.props.type === props.type
+        );
+      }
+      return undefined;
+    });
+
+    if (instance?.vnode.component?.props) {
+      (instance.vnode.component.props.count as number) += 1;
+      index = instances.length - 1;
+      return instance;
+    }
+  }
+
+  const { vnode, container: hostContainer } = createVNodeComponent(
+    ToastComponent,
+    props
+  );
+
+  if (hostContainer.firstElementChild) {
+    container.appendChild(hostContainer.firstElementChild);
+  }
+
+  if (vnode?.props) {
+    // close emit
+    vnode.props.onClose = () => {
+      removeInstance(id);
+      render(null, hostContainer);
+    };
+  }
+
+  const instance = {
+    id,
+    vnode,
+    close: () => {
+      vnode?.component?.exposed?.close();
+    },
+  };
+
+  instances.push(instance);
+  return instance;
+};
+
+function createVNodeComponent(
+  component: Component,
+  props: Record<string, unknown>
+) {
+  const vnode = createVNode(component, props);
+  const container = document.createElement("div");
+  render(vnode, container);
+  return { vnode, container };
+}
+
+function removeInstance(id: string) {
+  const index = instances.findIndex((instance) => instance.id === id);
+  if (index >= 0) {
+    instances.splice(index, 1);
+
+    if (instances.length === 0) {
+      const container = document.body.querySelector(".toast-container");
+      container?.remove();
+    }
+  }
+}
+
+toast.success = (content: string, props?: ToastApiProps) =>
+  toast({ ...props, type: "success", content });
+toast.info = (content: string, props?: ToastApiProps) =>
+  toast({ ...props, type: "info", content });
+toast.warning = (content: string, props?: ToastApiProps) =>
+  toast({ ...props, type: "warning", content });
+toast.error = (content: string, props?: ToastApiProps) =>
+  toast({ ...props, type: "error", content });
+
+export { toast as Toast };