refactor: Add JobSummary and Transaction models, client to get currency exchange rate

app/repositories/job_repository.py

@@ -1,7 +1,10 @@
 from typing import List, Optional
 from sqlalchemy import select
 from sqlalchemy.ext.asyncio import AsyncSession
+from sqlalchemy.orm import selectinload
 from app.db.models.job import Job
+from app.db.models.transaction import Transaction
+from app.db.models.job_summary import JobSummary
 
 
 class JobRepository:
@@ -9,18 +12,25 @@ class JobRepository:
         self.db = db
 
     async def create(self, filename: str) -> Job:
+        """Create a new job record with status='pending'"""
         job = Job(filename=filename, status="pending")
         self.db.add(job)
         await self.db.flush()
         return job
 
     async def get_by_id(self, job_id: str) -> Optional[Job]:
-        query = select(Job).where(Job.id == job_id)
+        """Fetch a job record by its ID, eagerly loading summary and transactions"""
+        query = (
+            select(Job)
+            .options(selectinload(Job.summary), selectinload(Job.transactions))
+            .where(Job.id == job_id)
+        )
         result = await self.db.execute(query)
         return result.scalar_one_or_none()
 
     async def list_all(self, status: Optional[str] = None) -> List[Job]:
-        query = select(Job)
+        """List all job records, optionally filtered by status, eagerly loading summary"""
+        query = select(Job).options(selectinload(Job.summary))
         if status:
             query = query.where(Job.status == status)
         query = query.order_by(Job.created_at.desc())
@@ -28,8 +38,20 @@ class JobRepository:
         return list(result.scalars().all())
 
     async def update(self, job: Job, **kwargs) -> Job:
+        """Update job fields dynamically"""
         for key, value in kwargs.items():
             if hasattr(job, key):
                 setattr(job, key, value)
         await self.db.flush()
         return job
+
+    async def add_transactions(self, transactions: List[Transaction]) -> None:
+        """Add multiple transaction records in bulk"""
+        self.db.add_all(transactions)
+        await self.db.flush()
+
+    async def add_summary(self, summary: JobSummary) -> JobSummary:
+        """Add job summary record"""
+        self.db.add(summary)
+        await self.db.flush()
+        return summary