feat: enhance LMS retention data with completion rates, improve LTI key handling, and refine dev setup scripts

services/lms-service/generate_dev_keys.sh

@@ -0,0 +1,31 @@
+#!/bin/bash
+
+# Configuration
+# Path is relative to the project root where the script is located
+SCRIPT_DIR="$( cd "$( dirname "${BASH_SOURCE[0]}" )" && pwd )"
+KEY_DIR="$SCRIPT_DIR/dev_keys"
+mkdir -p "$KEY_DIR"
+
+echo "🔐 Generando llaves de desarrollo para LTI..."
+
+# 1. Private Key
+openssl genrsa -out "$KEY_DIR/lti_private.pem" 2048
+
+# 2. Public Key
+openssl rsa -in "$KEY_DIR/lti_private.pem" -pubout -out "$KEY_DIR/lti_public.pem"
+
+# 3. Extract Modulus (needed for JWKS 'n' parameter)
+# Hex format
+openssl rsa -in "$KEY_DIR/lti_private.pem" -noout -modulus | cut -d'=' -f2 > "$KEY_DIR/modulus_hex.txt"
+
+# Base64URL format (standard for JWKS)
+# We convert the hex modulus to binary and then to base64url
+MODULUS_HEX=$(cat "$KEY_DIR/modulus_hex.txt")
+python3 -c "import base64; print(base64.urlsafe_b64encode(bytes.fromhex('$MODULUS_HEX')).decode().rstrip('='))" > "$KEY_DIR/modulus_b64.txt"
+
+echo "✅ Llaves generadas en $KEY_DIR"
+echo "------------------------------------------------"
+echo "Para producción, define las variables de entorno:"
+echo "- LTI_PRIVATE_KEY: Contenido completo de lti_private.pem"
+echo "- LTI_JWK_N: Contenido de modulus_b64.txt"
+echo "------------------------------------------------"