feat: add operation exercises generation using gen_op.py

Moved gen-op.py to app/gen_op.py and integrated it with the FastAPI application

Added a new section in the UI for generating operation exercises

Updated the PDF generation to work in memory and upload to S3

Bumped version to 1.0.9

app/main.py

@@ -6,6 +6,7 @@ import io
 import boto3
 import zipfile
 import tempfile
+import importlib.util
 from botocore.exceptions import ClientError
 from typing import List
 from fastapi import FastAPI, Request, Form
@@ -16,6 +17,9 @@ from fpdf import FPDF
 
 import logging
 
+# Import the functions from gen_op.py
+from app.gen_op import generer_pdf_exercices_en_memoire
+
 # Custom filter to exclude health check logs
 class HealthCheckFilter(logging.Filter):
     def filter(self, record: logging.LogRecord) -> bool:
@@ -163,6 +167,9 @@ class ExerciseRequest(BaseModel):
     max_table: int
     num_exercises: int = 15
 
+class OperationExerciseRequest(BaseModel):
+    num_exercises: int = 20
+
 
 def generate_exercises(
     min_table: int, max_table: int, num_exercises: int = 15
@@ -305,6 +312,26 @@ def create_math_exercises_pdf(
     return pdf_filename
 
 
+def create_operation_exercises_pdf(num_exercises: int = 20) -> str:
+    """Crée un fichier PDF avec des exercices d'opérations et l'upload sur S3"""
+    import datetime
+    
+    # Add timestamp to filename
+    timestamp = datetime.datetime.now().strftime("%Y%m%d_%H%M%S")
+    pdf_filename = f"exercices_operations_{num_exercises}_exercices_{timestamp}.pdf"
+    
+    # Generate PDF in memory using gen-op functions
+    pdf_data = generer_pdf_exercices_en_memoire(num_exercises)
+    
+    # Upload to S3
+    upload_success = upload_to_s3(pdf_data, S3_BUCKET_NAME, pdf_filename, "application/pdf")
+    
+    if not upload_success:
+        raise Exception("Failed to upload PDF to S3")
+    
+    return pdf_filename
+
+
 @app.get("/", response_class=HTMLResponse)
 async def read_root(request: Request):
     return templates.TemplateResponse("index.html", {"request": request})
@@ -333,6 +360,21 @@ async def generate_exercises_endpoint(request: ExerciseRequest):
         return {"error": f"Erreur lors de la création du PDF: {str(e)}"}
 
 
+@app.post("/generate-operations")
+async def generate_operation_exercises_endpoint(request: OperationExerciseRequest):
+    try:
+        if request.num_exercises < 1:
+            return {"error": "Le nombre d'exercices doit être supérieur à 0"}
+
+        pdf_filename = create_operation_exercises_pdf(request.num_exercises)
+
+        # Return redirect to automatically download the file
+        return RedirectResponse(url=f"/download/{pdf_filename}", status_code=303)
+
+    except Exception as e:
+        return {"error": f"Erreur lors de la création du PDF: {str(e)}"}
+
+
 @app.get("/download/{filename}")
 async def download_pdf(filename: str):
     # Download file from S3