from langchain_community.callbacks import get_openai_callback
from langchain_core.prompts import FewShotChatMessagePromptTemplate, PromptTemplate
from langchain_openai import ChatOpenAI
import os
import dotenv

dotenv.load_dotenv()

## 设置环境变量
os.environ['OPENAI_API_KEY'] = os.getenv("SILICONFLOW_API_KEY")
os.environ['OPENAI_BASE_URL'] = os.getenv("SILICONFLOW_BASE_URL")

# 默认的 'model_name': 'deepseek-ai/DeepSeek-V3.1',
llm = ChatOpenAI(model="deepseek-ai/DeepSeek-R1-0528-Qwen3-8B")
template = PromptTemplate.from_template("给我讲一个关于{topic}的冷笑话")
chain = template | llm

with get_openai_callback() as cb:
    response = chain.invoke({"topic":"特朗普"})
    print(response)

print("------")
print(f"total_tokens:{cb.total_tokens}")
print(f"prompt_tokens :{cb.prompt_tokens}")
print(f"completion_tokens:{cb.completion_tokens}")
print(f"total_cost:{cb.total_cost}")