Add application file 5

app.py

@@ -1,83 +1,110 @@
 import streamlit as st
+import importlib
 from fpdf import FPDF
 
-# Initialize session state to keep track of questions
-if 'questions' not in st.session_state:
-    st.session_state.questions = []
-if 'current_question' not in st.session_state:
-    st.session_state.current_question = 0
-if 'pdf_report' not in st.session_state:
-    st.session_state.pdf_report = None
+# List of available modules with shorter names and icons
+module_names = {
+    "Bases": "presentation_bases",
+    "Validity": "valid_invalid_numbers",
+    "Conversion": "conversion_bases",
+    "Grouping": "grouping_techniques",
+    "Addition": "addition_bases",
+    "2's Complement": "twos_complement",
+    "Negative Numbers": "negative_binary",
+    "Subtraction": "subtraction_bases",
+}
 
-# Emojis for correct/incorrect and PDF
-correct_emoji = "✅"
-incorrect_emoji = "❌"
-pdf_emoji = "📄"
+# Initialize session state for tracking answers, progress, and questions queue
+if 'correct_count' not in st.session_state:
+    st.session_state.correct_count = 0
+if 'question_count' not in st.session_state:
+    st.session_state.question_count = 0
+if 'current_module' not in st.session_state:
+    st.session_state.current_module = None
+if 'question_queue' not in st.session_state:
+    st.session_state.question_queue = []
+if 'submitted' not in st.session_state:
+    st.session_state.submitted = False
 
-# Example questions
-questions = [
-    {
-        "question": "What is the binary equivalent of the decimal number 13?",
-        "options": ["1100", "1101", "1011", "1111", "1001"],
-        "answer": "1101"
-    },
-    {
-        "question": "Which of the following is a valid hexadecimal number?",
-        "options": ["1G4", "FACE", "XYZ", "1.5", "0x23G5"],
-        "answer": "FACE"
-    }
-    # Add more questions here
-]
+def generate_pdf_report():
+    pdf = FPDF()
+    pdf.add_page()
+    pdf.set_font("Arial", size=12)
 
-# Function to display a question
-def display_question():
-    current_q = questions[st.session_state.current_question]
-    st.write(f"**Question {st.session_state.current_question + 1}:** {current_q['question']}")
-    user_answer = st.radio("Choose an answer:", current_q['options'])
+    pdf.cell(200, 10, txt="Quiz Report", ln=True, align="C")
+    pdf.ln(10)
 
-    if st.button("Submit Answer"):
-        correct_answer = current_q['answer']
-        status = "Correct" if user_answer == correct_answer else "Incorrect"
-        emoji = correct_emoji if status == "Correct" else incorrect_emoji
-        
-        st.session_state.questions.append({
-            'question': current_q['question'],
-            'user_answer': user_answer,
-            'correct_answer': correct_answer,
-            'status': status
-        })
+    for idx, entry in enumerate(st.session_state.question_queue):
+        question, selected, correct, explanation = entry
+        pdf.multi_cell(0, 10, f"Q{idx+1}: {question}")
+        pdf.multi_cell(0, 10, f"Selected Answer: {selected}")
+        pdf.multi_cell(0, 10, f"Correct Answer: {correct}")
+        pdf.multi_cell(0, 10, f"Explanation: {explanation}")
+        pdf.ln(10)
 
-        st.markdown(f"**You answered:** {user_answer} {emoji}")
-        if status == "Correct":
-            st.success(f"Correct! {correct_emoji}")
-        else:
-            st.error(f"Incorrect. The correct answer is {correct_answer} {incorrect_emoji}")
+    return pdf.output(dest='S').encode('latin1')
 
-    if len(st.session_state.questions) > 0 and st.session_state.current_question < len(questions) - 1:
-        if st.button("Next Question"):
-            st.session_state.current_question += 1
-            st.experimental_rerun()
+# Streamlit interface
+st.sidebar.title("Quiz Modules")
+module_name = st.sidebar.radio("Choose a module:", list(module_names.keys()), index=0)
+
+if module_name:
+    module_file = module_names[module_name]
+    try:
+        module = importlib.import_module(f'modules.{module_file}')
+        generate_question = module.generate_question
+        title = getattr(module, 'title', f"{module_name} Module")
+        description = getattr(module, 'description', "Description is not available")
+        
+        # Show module title and description
+        st.title(title)
+        st.write(description)
+        
+        # Add spacing to ensure question visibility on Hugging Face
+        st.markdown("<br><br>", unsafe_allow_html=True)
 
-    if len(st.session_state.questions) > 0:
-        if st.button(f"{pdf_emoji} Download PDF Report"):
-            generate_pdf_report(st.session_state.questions)
-            st.download_button(label=f"{pdf_emoji} Download PDF", data=st.session_state.pdf_report, file_name="quiz_report.pdf")
+        if st.session_state.submitted:
+            st.session_state.submitted = False
+            st.session_state.question_count += 1
+            st.session_state.question_queue.append((
+                st.session_state.current_question, 
+                st.session_state.selected_answer, 
+                st.session_state.correct_answer, 
+                st.session_state.explanation
+            ))
 
-# Function to generate a PDF report
-def generate_pdf_report(questions):
-    pdf = FPDF()
-    pdf.add_page()
-    pdf.set_font("Arial", size=12)
+            if st.session_state.selected_answer == st.session_state.correct_answer:
+                st.session_state.correct_count += 1
+                st.success("✅ Correct!")
+            else:
+                st.error("❌ Incorrect.")
+            st.write(f"**Explanation:** {st.session_state.explanation}")
+        
+        if st.session_state.question_count > 0:
+            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.session_state.current_question, options, st.session_state.correct_answer, st.session_state.explanation = generate_question()
+        st.write(f"**Question {st.session_state.question_count + 1}:** {st.session_state.current_question}")
+        st.session_state.selected_answer = st.radio("Choose an answer:", options)
 
-    for i, q in enumerate(questions, 1):
-        pdf.cell(200, 10, txt=f"Question {i}: {q['question']}", ln=True)
-        pdf.cell(200, 10, txt=f"Your Answer: {q['user_answer']}", ln=True)
-        pdf.cell(200, 10, txt=f"Correct Answer: {q['correct_answer']}", ln=True)
-        pdf.cell(200, 10, txt=f"Status: {q['status']}", ln=True)
-        pdf.cell(200, 10, txt="---------------------------------", ln=True)
+        col1, col2, col3 = st.columns(3)
+        if col1.button("Submit"):
+            st.session_state.submitted = True
+            st.experimental_rerun()
 
-    st.session_state.pdf_report = pdf.output(dest='S').encode('latin1')
+        if st.session_state.question_count > 0:
+            with col2:
+                if st.button("Next Question"):
+                    st.experimental_rerun()
 
-# Main app logic
-st.title("Multiple Choice Quiz")
-display_question()
+            with col3:
+                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.")