app/components/Layout/MainMenu.vue

<!--
Menu principal de l'application
Prend en paramètre une liste de ItemMenu et les met en forme
-->

<template>
  <v-navigation-drawer
    :mini-variant.sync="miniVariant"
    v-model="open"
    class="bg-ot-dark-grey text-ot-menu-color main-menu"
  >
    <template #prepend>
      <slot name="title"></slot>
    </template>

    <v-list
        open-strategy="single"
        active-class="active"
        class="left-menu"
    >
      <div v-for="(item, i) in menu.children" :key="i">

        <!-- Cas 1 : l'item n'a pas d'enfants, c'est un lien -->
        <v-list-item
          v-if="!item.children"
          :title="$t(item.label)"
          :prepend-icon="item.icon.name"
          :href="!isInternalLink(item) ? item.to : undefined"
          :to="isInternalLink(item) ? item.to : undefined"
          exact
          class="text-ot-menu-color"
          height="48px"
        ></v-list-item>

        <!-- Cas 2 : l'item a des enfants, c'est un groupe -->
        <v-list-group
          v-else
          expand-icon="fas fa-angle-right"
          collapse-icon="fas fa-angle-down"
          class="text-ot-menu-color"
          v-model="item.expanded"
        >
          <template #activator="{ props }">
            <v-list-item
                v-bind="props"
                :prepend-icon="item.icon.name"
                :title="$t(item.label)"
                class="text-ot-menu-color"
                height="48px"
            ></v-list-item>
          </template>

          <v-list-item
            v-for="child in item.children"
            :key="$t(child.label)"
            :title="$t(child.label)"
            :prepend-icon="child.icon.name"
            :href="!isInternalLink(child) ? child.to : undefined"
            :to="isInternalLink(child) ? child.to : undefined"
            exact
            height="48px"
            class="text-ot-white"
          ></v-list-item>
        </v-list-group>
      </div>
    </v-list>

    <template #append>
      <slot name="foot"></slot>
    </template>
  </v-navigation-drawer>

</template>

<script setup lang="ts">
import {onUnmounted, watch, WatchStopHandle} from "@vue/runtime-core";
import {ref, toRefs} from "@vue/reactivity";
import {MenuGroup, MenuItem} from "~/types/layout";
import {MENU_LINK_TYPE} from "~/types/enum/layout";

const props = defineProps({
  menu: {
    type: Object as () => MenuGroup,
    required: true
  },
  miniVariant: {
    type: Boolean,
    required: true
  },
  openMenu: {
    type: Boolean,
    required: true
  }
})

const { openMenu } = toRefs(props)
const open = ref(true)


// Par défaut si l'écran est trop petit au chargement de la page, le menu doit être fermé.
if(process.client)
  open.value = window.innerWidth >= 1264

// TODO : ajouter une petite explication de ce qu'on fait dans ce watch
const unwatch: WatchStopHandle = watch(openMenu, (newValue, oldValue) => {
  if (newValue !== oldValue) {
    open.value = true
  }
})

const isInternalLink = (menuItem: MenuItem | MenuGroup) => {
  return 'type' in menuItem && menuItem.type === MENU_LINK_TYPE.INTERNAL
}

onUnmounted(() => {
  unwatch()
})
</script>

<style scoped lang="scss">

  .v-list-item {
    min-height: 10px !important;
  }

  :deep(.v-list-item-title),
  :deep(.v-icon),
  {
    font-size: 14px;
    color: rgb(var(--v-theme-ot-menu-color));
  }

  .v-list-item__prepend {
    margin: 10px 0;
    margin-right: 10px !important;
  }

  .v-application--is-ltr .v-list-group--no-action > .v-list-group__header {
    margin-left: 0;
    padding-left: 0;
  }
  .v-application--is-ltr .v-list-group--no-action > .v-list-group__items > .v-list-item {
    padding-left: 30px;
  }

  .v-list-item__content {
    padding: 8px 0;
  }

  .v-list-group__items .v-list-item {
    padding-inline-start: 30px !important;
  }

  .v-list-group--no-action > .v-list-group__header,
  .v-list-item
  {
    border-left:3px solid rgb(var(--v-theme-ot-dark-grey));
    height: 48px;
  }

  .v-list-item:hover,
  .v-list-item.active,
  :deep(.v-list-group__items .v-list-item)
  {
    border-left: 3px solid rgb(var(--v-theme-ot-green));
    background: rgb(var(--v-theme-ot-dark-grey-hover));
  }

  :deep(.v-list-group__items .v-list-item-title) {
    color: rgb(var(--v-theme-ot-white));
  }

  :deep(.v-list-item .v-icon) {
    margin-right: 10px;
  }

</style>