new feat übersetzer und faq

backend/static/onboarding.js

@@ -0,0 +1,81 @@
+(() => {
+  function initOnboarding(dialog) {
+    const slides = Array.from(dialog.querySelectorAll("[data-onboarding-slide]"));
+    const dots = Array.from(dialog.querySelectorAll("[data-onboarding-dot]"));
+    const progress = dialog.querySelector("[data-onboarding-progress]");
+    const backButton = dialog.querySelector("[data-onboarding-back]");
+    const nextButton = dialog.querySelector("[data-onboarding-next]");
+    const completeUrl = dialog.dataset.completeUrl;
+    const progressTemplate = dialog.dataset.progressTemplate || "Step {current} of {total}";
+
+    if (!slides.length || !progress || !backButton || !nextButton || !completeUrl) {
+      return;
+    }
+
+    let currentIndex = 0;
+    let completionSent = false;
+
+    const markComplete = () => {
+      if (completionSent) {
+        return;
+      }
+      completionSent = true;
+      window.fetch(completeUrl, {
+        method: "POST",
+        credentials: "same-origin",
+        headers: { "X-Requested-With": "XMLHttpRequest" },
+        keepalive: true,
+      }).catch(() => {
+        completionSent = false;
+      });
+    };
+
+    const finish = () => {
+      markComplete();
+      dialog.close();
+    };
+
+    const render = () => {
+      slides.forEach((slide, index) => {
+        slide.hidden = index !== currentIndex;
+      });
+      dots.forEach((dot, index) => {
+        dot.classList.toggle("is-active", index <= currentIndex);
+      });
+      progress.textContent = progressTemplate
+        .replace("{current}", String(currentIndex + 1))
+        .replace("{total}", String(slides.length));
+      backButton.hidden = currentIndex === 0;
+      const isLast = currentIndex === slides.length - 1;
+      nextButton.textContent = isLast ? nextButton.dataset.finishLabel : nextButton.dataset.nextLabel;
+    };
+
+    backButton.addEventListener("click", () => {
+      currentIndex = Math.max(0, currentIndex - 1);
+      render();
+    });
+
+    nextButton.addEventListener("click", () => {
+      if (currentIndex === slides.length - 1) {
+        finish();
+        return;
+      }
+      currentIndex += 1;
+      render();
+    });
+
+    dialog.addEventListener("cancel", (event) => {
+      event.preventDefault();
+    });
+
+    render();
+    dialog.showModal();
+  }
+
+  document.addEventListener("DOMContentLoaded", () => {
+    const dialog = document.querySelector("[data-onboarding-dialog]");
+    if (dialog) {
+      initOnboarding(dialog);
+    }
+  });
+})();