Updates

app.py

@@ -36,6 +36,19 @@ if 'explanation' not in st.session_state:
 if 'selected_answer' not in st.session_state:
     st.session_state.selected_answer = None
 
+# Handle Next and Previous question navigation
+def navigate_question(direction):
+    if direction == "next":
+        st.session_state.question_count += 1
+    elif direction == "prev" and st.session_state.question_count > 1:
+        st.session_state.question_count -= 1
+        st.session_state.submitted = False
+        st.session_state.current_question = st.session_state.question_queue[st.session_state.question_count - 1][0]
+        st.session_state.options = st.session_state.question_queue[st.session_state.question_count - 1][1]
+        st.session_state.selected_answer = st.session_state.question_queue[st.session_state.question_count - 1][2]
+        st.session_state.correct_answer = st.session_state.question_queue[st.session_state.question_count - 1][3]
+        st.session_state.explanation = st.session_state.question_queue[st.session_state.question_count - 1][4]
+
 def generate_pdf_report():
     pdf = FPDF()
     pdf.add_page()
@@ -84,21 +97,25 @@ if module_name:
             correct_percentage = (st.session_state.correct_count / st.session_state.question_count) * 100
             st.write(f"**Correct Answers:** {st.session_state.correct_count}/{st.session_state.question_count} ({correct_percentage:.2f}%)")
 
-        st.write(f"<div style='border: 2px solid #ccc; padding: 15px; background-color: #f9f9f9;'>", unsafe_allow_html=True)
-        st.write(f"**Question {st.session_state.question_count + 1}:** {st.session_state.current_question}")
+        st.markdown(
+            f"""
+            <div style='border: 2px solid #ccc; padding: 15px; background-color: #f9f9f9;'>
+            <strong>Question {st.session_state.question_count + 1}:</strong> {st.session_state.current_question}
+            </div>
+            """,
+            unsafe_allow_html=True
+        )
+
         st.session_state.selected_answer = st.radio("Choose an answer:", st.session_state.options)
-        st.write("</div>", unsafe_allow_html=True)
 
-        col1, col2 = st.columns([1, 4])
+        col1, col2, col3 = st.columns([1, 1, 3])
         with col1:
             if st.session_state.question_count > 0:
                 if st.button("⬅️ Prev"):
-                    # Logic for previous question (if applicable)
-                    pass
+                    navigate_question("prev")
         with col2:
             if st.button("Submit"):
                 st.session_state.submitted = True
-                st.session_state.question_count += 1
                 st.session_state.question_queue.append((
                     st.session_state.current_question, 
                     st.session_state.options, 
@@ -114,16 +131,19 @@ if module_name:
                     st.error("❌ Incorrect.")
                 st.write(f"**Explanation:** {st.session_state.explanation}")
                 st.session_state.current_question = None
-                st.experimental_set_query_params(dummy_param=True)
-
-        if st.session_state.submitted and st.session_state.question_count > 0:
-            pdf = generate_pdf_report()
-            st.download_button(
-                label="Download PDF Report 📄",
-                data=pdf,
-                file_name="quiz_report.pdf",
-                mime="application/pdf"
-            )
+
+        if st.session_state.submitted:
+            with col3:
+                if st.button("➡️ Next"):
+                    navigate_question("next")
+                if st.session_state.question_count > 0:
+                    pdf = generate_pdf_report()
+                    st.download_button(
+                        label="Download PDF Report 📄",
+                        data=pdf,
+                        file_name="quiz_report.pdf",
+                        mime="application/pdf"
+                    )
 
     except ModuleNotFoundError:
         st.error(f"The module '{module_name}' was not found. Please select another module.")