[Feat] update market price (#43)

## Description
- update market price
 only when a higher price is offered than the current on
- make bid price Pydantic model
<!-- Add a more detailed description of the changes if needed. -->

## Related Issue
close #36 
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app/api/routes/api.py

@@ -8,6 +8,7 @@
 from app.api.routes import messages
 from app.api.routes import likes
 from app.api.routes import reports
+from app.api.routes import bid_prices
 
 router = APIRouter()
 router.include_router(users.router, tags=["users"], prefix="/user")
@@ -18,3 +19,4 @@
 router.include_router(messages.router, tags=["messages"], prefix="/message")
 router.include_router(likes.router, tags=["likes"], prefix="/like")
 router.include_router(reports.router, tags=["reports"], prefix="/report")
+router.include_router(bid_prices.router, tags=["bid_prices"], prefix="/bid")

app/api/routes/bid_prices.py

@@ -0,0 +1,32 @@
+from typing import Any, List
+from fastapi import APIRouter, Depends, HTTPException
+from sqlalchemy.orm import Session
+from app.api.dependencies import database
+from app.crud.crud_bid_prices import bid
+from app.models.domain.bid_prices import BidPrice
+from app.services.user_manager import current_active_user
+from app.crud.crud_users import get_user_by_email
+from app.db.fastapi_user import User
+
+router = APIRouter()
+
+
+@router.put("/{post_id}", description="경매 게시글의 경매 가격을 제시합니다.")
+def bid_for_item(
+    *,
+    db: Session = Depends(database.get_db),
+    current_user: User = Depends(current_active_user),
+    post_id: int,
+    bid_price: BidPrice,
+) -> Any:
+    current_user_name = get_user_by_email(db=db, email=current_user.email).username
+
+    # market price update
+    market = bid(db=db, post_id=post_id, bid_price=bid_price.bid_price)
+    if market:
+        return {"message": f"{current_user_name} successfully placed a bid"}
+    else:
+        raise HTTPException(
+            status_code=400,
+            detail="Bid price must be higher than current price",
+        )

app/crud/crud_bid_prices.py

@@ -0,0 +1,15 @@
+from sqlalchemy.orm import Session
+from app.models.schemas.markets import Market
+
+
+def bid(db: Session, *, post_id: int, bid_price: int) -> Market:
+    market = db.query(Market).filter(Market.post_id == post_id).one()
+
+    if bid_price > market.price:
+        market.price = bid_price
+        db.add(market)
+        db.commit()
+        db.refresh(market)
+        return market
+
+    return None

app/models/domain/bid_prices.py

@@ -0,0 +1,5 @@
+from pydantic import BaseModel
+
+
+class BidPrice(BaseModel):
+    bid_price: int