Add Token model and update endpoints to use it

Refactor token validation and saving endpoints to accept a Token model
instead of a raw string. Set default values for token generation request
fields. Update TokenService cleanup to use datetime.now().

microservices/token-service/main.py

@@ -15,7 +15,7 @@ from typing import List, Optional
 
 from models import (
     TokenGenerateRequest, TokenResponse, TokenValidationResponse,
-    TokenListResponse, HealthResponse
+    TokenListResponse, HealthResponse, Token
 )
 from database import connect_to_mongo, close_mongo_connection, get_database
 from token_service import TokenService
@@ -95,6 +95,16 @@ async def generate_token(request: TokenGenerateRequest, db=Depends(get_db)):
     """Generate a new JWT token"""
     try:
         token_service = TokenService(db)
+
+        if not request.data_aggregation:
+            request.data_aggregation = False
+        if not request.time_aggregation:
+            request.time_aggregation = False
+        if not request.embargo:
+            request.embargo = False
+        if not request.exp_hours:
+            request.exp_hours = 24
+
         token = token_service.generate_token(
             name=request.name,
             list_of_resources=request.list_of_resources,
@@ -110,16 +120,16 @@ async def generate_token(request: TokenGenerateRequest, db=Depends(get_db)):
         raise HTTPException(status_code=500, detail="Internal server error")
 
 @app.post("/tokens/validate", response_model=TokenValidationResponse)
-async def validate_token(token: str, db=Depends(get_db)):
+async def validate_token(token: Token, db=Depends(get_db)):
     """Validate and decode a JWT token"""
     try:
         token_service = TokenService(db)
-        is_valid = await token_service.is_token_valid(token)
-        decoded = token_service.decode_token(token) if is_valid else None
+        is_valid = await token_service.is_token_valid(token.token)
+        decoded = token_service.decode_token(token.token) if is_valid else None
 
         return TokenValidationResponse(
             valid=is_valid,
-            token=token,
+            token=token.token,
             decoded=decoded if is_valid and "error" not in (decoded or {}) else None,
             error=decoded.get("error") if decoded and "error" in decoded else None
         )
@@ -128,11 +138,11 @@ async def validate_token(token: str, db=Depends(get_db)):
         raise HTTPException(status_code=500, detail="Internal server error")
 
 @app.post("/tokens/save")
-async def save_token(token: str, db=Depends(get_db)):
+async def save_token(token: Token, db=Depends(get_db)):
     """Save a token to database"""
     try:
         token_service = TokenService(db)
-        result = await token_service.insert_token(token)
+        result = await token_service.insert_token(token.token)
         return result
     except ValueError as e:
         raise HTTPException(status_code=400, detail=str(e))

microservices/token-service/models.py

@@ -6,6 +6,9 @@ from pydantic import BaseModel, Field
 from typing import List, Optional, Dict, Any
 from datetime import datetime
 
+class Token(BaseModel):
+    token: str = Field(..., description="JWT token")
+
 class TokenGenerateRequest(BaseModel):
     """Request model for token generation"""
     name: str = Field(..., description="Token owner name")

microservices/token-service/token_service.py

@@ -126,7 +126,6 @@ class TokenService:
 
     async def is_token_valid(self, token: str) -> bool:
         """Check if token is valid and active"""
-        # Check if token exists and is active in database
         token_record = await self.tokens_collection.find_one({
             "token": token,
             "active": True
@@ -135,7 +134,6 @@ class TokenService:
         if not token_record:
             return False
 
-        # Verify JWT signature and expiration
         decoded = self.decode_token(token)
         return decoded is not None and "error" not in decoded
 
@@ -147,7 +145,7 @@ class TokenService:
 
     async def cleanup_expired_tokens(self) -> int:
         """Remove expired tokens from database"""
-        now = datetime.utcnow()
+        now = datetime.now()
 
         # Delete tokens that have expired
         result = await self.tokens_collection.delete_many({