feat: add replace_ingredient

app/main.py

@@ -4,7 +4,7 @@
 from app.dependencies.auth import verify_token
 from app.routes import ping, root
 from app.routes.preference import preference
-from app.routes.recipe import recipe, ingredient_info, cooking_step, chat, search
+from app.routes.recipe import recipe, ingredient_info, cooking_step, chat, search, replace_ingredient
 from app.routes.refrigerator import ingredient_detect, refrigerator
 from app.routes.refrigerator import rearrange_refrigerator
 
@@ -36,6 +36,7 @@
 app.include_router(cooking_step.router, dependencies=[Depends(verify_token)])
 app.include_router(chat.router, dependencies=[Depends(verify_token)])
 app.include_router(search.router, dependencies=[Depends(verify_token)])
+app.include_router(replace_ingredient.router, dependencies=[Depends(verify_token)])
 app.include_router(ingredient_detect.router, dependencies=[Depends(verify_token)])
 app.include_router(refrigerator.router, dependencies=[Depends(verify_token)])
 app.include_router(rearrange_refrigerator.router, dependencies=[Depends(verify_token)])

app/models/recipe/replace_ingredient_models.py

@@ -0,0 +1,10 @@
+from pydantic import BaseModel
+
+
+class ReplaceIngredientRequest(BaseModel):
+    recipe_id: str
+    ingredient_name: str
+
+
+class ReplaceIngredientResponse(BaseModel):
+    replaced_ingredient: str

app/routes/recipe/replace_ingredient.py

@@ -0,0 +1,59 @@
+import logging
+
+from bson import ObjectId
+from fastapi import APIRouter, HTTPException
+
+from app.config import client as openai_client
+from app.database import recipe_collection
+from app.models.recipe.replace_ingredient_models import ReplaceIngredientRequest, ReplaceIngredientResponse
+
+router = APIRouter()
+
+
+@router.post("/recipe/replace-ingredient", tags=["Recipe"], response_model=ReplaceIngredientResponse)
+async def replace_ingredient(request: ReplaceIngredientRequest):
+    """
+    레시피의 특정 재료에 대한 대체 재료를 추천합니다.
+    """
+    try:
+        # 데이터베이스에서 레시피 검색
+        recipe = await recipe_collection.find_one({"_id": ObjectId(request.recipe_id)})
+        if not recipe:
+            raise HTTPException(status_code=404, detail="레시피를 찾을 수 없습니다.")
+
+        # 재료 존재 여부 확인
+        ingredient_exists = any(ing["name"] == request.ingredient_name for ing in recipe["ingredients"])
+        if not ingredient_exists:
+            raise HTTPException(status_code=404, detail="지정된 재료를 레시피에서 찾을 수 없습니다.")
+
+        # 대체 재료 추천을 위한 프롬프트
+        prompt = f"""다음 레시피의 '{request.ingredient_name}'를 대체할 수 있는 가장 적합한 재료 하나만 추천해주세요.
+
+        레시피: {recipe['name']}
+        레시피 설명: {recipe['description']}
+        
+        대체할 재료: {request.ingredient_name}
+        
+        다음 사항을 고려해주세요:
+        1. 원재료와 비슷한 맛과 식감을 제공할 수 있는 재료
+        2. 레시피의 전반적인 특성을 해치지 않는 재료
+        3. 조리 방법이 크게 달라지지 않는 재료
+        
+        재료 이름만 답변해주세요.
+        """
+
+        response = openai_client.chat.completions.create(
+            model="chatgpt-4o-latest",
+            messages=[
+                {"role": "system", "content": "당신은 요리 전문가로서 재료 대체에 대한 전문적인 지식을 가지고 있습니다."},
+                {"role": "user", "content": prompt}
+            ],
+            temperature=0.7
+        )
+
+        replaced_ingredient = response.choices[0].message.content.strip()
+        return ReplaceIngredientResponse(replaced_ingredient=replaced_ingredient)
+
+    except Exception as e:
+        logging.error(f"Unexpected error: {e}", exc_info=True)
+        raise HTTPException(status_code=400, detail=str(e))