feat: Add search functionality for public portal (#5683)

Co-authored-by: Pranav Raj S <pranav@chatwoot.com>

app/javascript/portal/components/SearchSuggestions.vue

@@ -0,0 +1,103 @@
+<template>
+  <div
+    class="shadow-md bg-white mt-2 max-h-72 scroll-py-2 p-4 rounded overflow-y-auto text-sm text-slate-700"
+  >
+    <div v-if="isLoading" class="font-medium text-sm text-slate-400">
+      {{ loadingPlaceholder }}
+    </div>
+    <h3 v-if="shouldShowResults" class="font-medium text-sm text-slate-400">
+      {{ resultsTitle }}
+    </h3>
+    <ul
+      v-if="shouldShowResults"
+      class="bg-white mt-2 max-h-72 scroll-py-2 overflow-y-auto text-sm text-slate-700"
+      role="listbox"
+    >
+      <li
+        v-for="(article, index) in items"
+        :id="article.id"
+        :key="article.id"
+        class="group flex cursor-default select-none items-center rounded-md p-2 mb-1"
+        :class="{ 'bg-slate-25': index === selectedIndex }"
+        role="option"
+        tabindex="-1"
+        @mouseover="onHover(index)"
+      >
+        <a
+          :href="generateArticleUrl(article)"
+          class="flex-auto truncate text-base font-medium leading-6 w-full hover:underline"
+        >
+          {{ article.title }}
+        </a>
+      </li>
+    </ul>
+
+    <div v-if="showEmptyResults" class="font-medium text-sm text-slate-400">
+      {{ emptyPlaceholder }}
+    </div>
+  </div>
+</template>
+
+<script>
+import mentionSelectionKeyboardMixin from 'dashboard/components/widgets/mentions/mentionSelectionKeyboardMixin.js';
+
+export default {
+  mixins: [mentionSelectionKeyboardMixin],
+  props: {
+    items: {
+      type: Array,
+      default: () => [],
+    },
+    isLoading: {
+      type: Boolean,
+      default: false,
+    },
+    emptyPlaceholder: {
+      type: String,
+      default: '',
+    },
+    searchPlaceholder: {
+      type: String,
+      default: '',
+    },
+    loadingPlaceholder: {
+      type: String,
+      default: '',
+    },
+    resultsTitle: {
+      type: String,
+      default: '',
+    },
+  },
+  data() {
+    return {
+      selectedIndex: 0,
+    };
+  },
+
+  computed: {
+    showEmptyResults() {
+      return !this.items.length && !this.isLoading;
+    },
+    shouldShowResults() {
+      return this.items.length && !this.isLoading;
+    },
+  },
+
+  methods: {
+    generateArticleUrl(article) {
+      return `/hc/${article.portal.slug}/${article.category.locale}/${article.category.slug}/${article.id}`;
+    },
+    handleKeyboardEvent(e) {
+      this.processKeyDownEvent(e);
+      this.$el.scrollTop = 40 * this.selectedIndex;
+    },
+    onHover(index) {
+      this.selectedIndex = index;
+    },
+    onSelect() {
+      window.location = this.generateArticleUrl(this.items[this.selectedIndex]);
+    },
+  },
+};
+</script>