From a7b8a679ababd255c109d5057b338ca10e96511f Mon Sep 17 00:00:00 2001
From: Alex Iglesias <alexiglesias@finsweet.com>
Date: Tue, 22 Oct 2024 12:49:23 +0200
Subject: [PATCH] chore: refactorings

---
 dropdowns.js | 175 ++++++++++++++++++++++++++++++---------------------
 1 file changed, 105 insertions(+), 70 deletions(-)

diff --git a/dropdowns.js b/dropdowns.js
index 742290c..1541a4d 100644
--- a/dropdowns.js
+++ b/dropdowns.js
@@ -1,80 +1,115 @@
+/**
+ * Handles Weglot language switcher dropdowns in Webflow.
+ * {@link https://weglot-2-0-ui-kit.webflow.io/}
+ */
 var Webflow = Webflow || [];
 Webflow.push(function () {
-    const dropdownElements = document.querySelectorAll("[weglot='dropdown']");
-    
-    Weglot.on('initialized', () => {
-        dropdownElements.forEach(dropdown => {
-            initializeSwitchers(dropdown);
-            updateSwitcherLanguage(window.Weglot.getCurrentLang(), dropdown);
-        });
+  const dropdownElements = document.querySelectorAll("[weglot='dropdown']");
+
+  window.Weglot.on("initialized", () => {
+    dropdownElements.forEach((dropdown) => {
+      const currentLang = window.Weglot.getCurrentLang();
+
+      initializeSwitcher(dropdown);
+      updateSwitcherLanguage(currentLang, dropdown);
+    });
+  });
+
+  window.Weglot.on("languageChanged", (activeLanguage) => {
+    dropdownElements.forEach((dropdown) => {
+      updateSwitcherLanguage(activeLanguage, dropdown);
     });
+  });
+
+  /**
+   * Initializes a language switcher dropdown
+   * @param {Element} dropdown
+   */
+  function initializeSwitcher(dropdown) {
+    const languageOptions = dropdown.querySelectorAll(".w-dropdown-list a");
 
-    Weglot.on('languageChanged', (activeLanguage) => {
-        dropdownElements.forEach(dropdown => {
-            updateSwitcherLanguage(activeLanguage, dropdown);
-        });
+    languageOptions.forEach((link) => {
+      // Make sure the language option isn't translated
+      link.setAttribute("data-wg-notranslate", "");
+      // Add the click listener
+      link.addEventListener("click", handleClick);
     });
 
-    function initializeSwitchers(dropdown) {
-        const languageOptions = dropdown.querySelectorAll(".w-dropdown-list a");
-        
-        languageOptions.forEach((link) => {
-            // Make sure the language option isn't translated
-            link.setAttribute('data-wg-notranslate', '');
-            // Add the click listener
-            link.addEventListener('click', handleClick);
-        });
-
-        function handleClick(e) {
-            e.preventDefault();
-            const langOption = e.target.closest(`a[lang]`);
-            if (!langOption) {
-                return;
-            }
-            Weglot.switchTo(langOption.getAttribute('lang'));
-        }
+    function handleClick(e) {
+      e.preventDefault();
+
+      const langOption = e.target.closest(`a[lang]`);
+      if (!langOption) return;
+
+      const newLang = langOption.getAttribute("lang");
+
+      window.Weglot.switchTo(newLang);
+    }
+  }
+
+  /**
+   * Updates the language switcher dropdown
+   * @param {string} newLanguage
+   * @param {Element} dropdown
+   */
+  function updateSwitcherLanguage(newLanguage, dropdown) {
+    const newLanguageLinks = dropdown.querySelectorAll(
+      `.w-dropdown-list a[lang="${newLanguage}"]`
+    );
+    const toggles = dropdown.querySelectorAll(".w-dropdown-toggle");
+
+    if (!newLanguageLinks.length || !toggles.length) {
+      return;
     }
 
-    function updateSwitcherLanguage(newLanguage, dropdown) {
-        const newLanguageLinks = dropdown.querySelectorAll(`.w-dropdown-list a[lang="${newLanguage}"]`);
-        const oldToggles = dropdown.querySelectorAll(".w-dropdown-toggle");
-        
-        if (!newLanguageLinks.length || !oldToggles) {
-            return;
-        }
-
-        let oldSrc = dropdown.querySelector(`.w-dropdown-toggle [weglot='flag']`);
-        
-        if (oldSrc) {
-            oldSrc = oldSrc.getAttribute('src');
-            const newSrc = dropdown.querySelector(`.w-dropdown-list a[lang="${newLanguage}"] img`).getAttribute('src');
-            
-            newLanguageLinks.forEach((link) => {
-                const image = link.querySelector("[weglot='flag']");
-                image.src = oldSrc;
-            });
-
-            oldToggles.forEach((toggle) => {
-                const image = toggle.querySelector("[weglot='flag']");
-                image.src = newSrc;
-            });
-        }
-
-        const oldText = dropdown.querySelector(`.w-dropdown-toggle [weglot='text']`).innerText;
-        const oldLanguage = dropdown.querySelector(".w-dropdown-toggle").getAttribute('lang');
-        
-        const newText = dropdown.querySelector(`.w-dropdown-list a[lang="${newLanguage}"] [weglot='text']`).innerText;
-
-        newLanguageLinks.forEach((link) => {
-            const text = link.querySelector("[weglot='text']");
-            text.innerText = oldText;
-            link.setAttribute('lang', oldLanguage);
-        });
-
-        oldToggles.forEach((toggle) => {
-            const text = toggle.querySelector("[weglot='text']");
-            text.innerText = newText;
-            toggle.setAttribute('lang', newLanguage);
-        });
+    const oldFlag = dropdown.querySelector(
+      `.w-dropdown-toggle [weglot='flag']`
+    );
+
+    if (oldFlag) {
+      const oldFlagSrc = oldFlag.getAttribute("src");
+      const newFlagSrc = dropdown
+        .querySelector(`.w-dropdown-list a[lang="${newLanguage}"] img`)
+        ?.getAttribute("src");
+
+      newLanguageLinks.forEach((link) => {
+        const image = link.querySelector("[weglot='flag']");
+        image.src = oldFlagSrc;
+      });
+
+      toggles.forEach((toggle) => {
+        const image = toggle.querySelector("[weglot='flag']");
+        image.src = newFlagSrc;
+      });
     }
+
+    const oldText = dropdown.querySelector(
+      `.w-dropdown-toggle [weglot='text']`
+    ).innerText;
+    const oldLanguage = dropdown
+      .querySelector(".w-dropdown-toggle")
+      ?.getAttribute("lang");
+
+    const newText = dropdown.querySelector(
+      `.w-dropdown-list a[lang="${newLanguage}"] [weglot='text']`
+    ).innerText;
+
+    newLanguageLinks.forEach((link) => {
+      const text = link.querySelector("[weglot='text']");
+      if (!text) return;
+
+      text.innerText = oldText;
+
+      link.setAttribute("lang", oldLanguage);
+    });
+
+    toggles.forEach((toggle) => {
+      const text = toggle.querySelector("[weglot='text']");
+      if (!text) return;
+
+      text.innerText = newText;
+
+      toggle.setAttribute("lang", newLanguage);
+    });
+  }
 });