added bearer token authentication

app/api/services/__init__.py

@@ -8,3 +8,4 @@ from app.api.services.token_validation import TokenValidationService
 from app.api.services.lien_check import LienCheckService
 from app.api.services.new_transaction_check import NewTransactionCheckService
 from app.api.services.complete_rac_check_service import CompleteRACcheckService
+from app.api.services.generate_token import GenerateTokenService

app/api/services/generate_token.py

@@ -0,0 +1,89 @@
+import datetime
+from datetime import timedelta
+from flask import request, jsonify
+from marshmallow import ValidationError
+from app.utils.logger import logger
+from app.api.helpers.response_helper import ResponseHelper
+from app.api.schemas.generate_token import GenerateTokenRequestSchema, GenerateTokenResponseSchema
+from app.config import Config
+from flask_jwt_extended import (
+    create_access_token,
+)
+
+
+class GenerateTokenService:
+    USERNAME = Config.BANK_CALL_BASIC_AUTH_USERNAME
+    PASSWORD = Config.BANK_CALL_BASIC_AUTH_PASSWORD
+    TYPE = Config.BANK_GRANT_TYPE
+    @staticmethod
+    def process_request(data):
+        """
+        Process the GenerateToken request.
+
+        Args:
+            data (dict): The request JSON payload.
+
+        Returns:
+            tuple: (JSON response, status code)
+        """
+        try:
+            logger.info("Processing GenerateToken request")
+
+            # Step 1: Validate input using schema
+            schema = GenerateTokenRequestSchema()
+            validated_data = schema.load(data)
+            
+            logger.info(f"Validated data: {validated_data}")
+
+            username = validated_data.get("username")
+            password = validated_data.get("password")
+            grant_type = validated_data.get("grant_type")
+            
+            if password != GenerateTokenService.PASSWORD or username != GenerateTokenService.USERNAME or grant_type != GenerateTokenService.TYPE:
+                return {
+                    "message": "Invalid credentials",
+                    "status": 401
+                }
+               
+            expires_in = 1800
+            identity = username
+            # Step 2: Generate JWT token
+            access_token = create_access_token(identity=identity, expires_delta=timedelta(seconds=expires_in))
+
+            # Step 3: Get client IP address
+            ipaddress = request.remote_addr or "127.0.0.1"
+
+            # Step 4: Build response timestamps
+            issued_time = datetime.datetime.utcnow()
+            expires_time = issued_time + datetime.timedelta(seconds=expires_in)
+
+            # Step 5: Construct response payload
+            response_data = {
+                "access_token": access_token,
+                "token_type": "bearer",
+                "expires_in": expires_in,
+                "userName": username,
+                "ipaddress": ipaddress,
+                "errorMessage": "",
+                "issued": issued_time,
+                "expires": expires_time
+            }
+
+            # Serialize with response schema
+            response_schema = GenerateTokenResponseSchema()
+            response_json = response_schema.dump(response_data)
+
+            return jsonify(response_json), 200
+
+        except ValidationError as err:
+            logger.error(f"Validation Error: {err.messages}")
+            return jsonify({
+                "message": "Validation exception",
+                "errors": err.messages
+            }), 422
+
+        except Exception as e:
+            logger.error(f"An error occurred while generating token: {str(e)}", exc_info=True)
+            return jsonify({
+                "message": "Internal Server Error"
+            }), 500