from typing import List, Union, Generator, Iterator
from schemas import OpenAIChatMessage
import requests


class Pipeline:
    def __init__(self):
        # Optionally, you can set the id and name of the pipeline.
        # Assign a unique identifier to the pipeline.
        # The identifier must be unique across all pipelines.
        # The identifier must be an alphanumeric string that can include underscores or hyphens. It cannot contain spaces, special characters, slashes, or backslashes.
        self.id = "ollama_pipeline"
        self.name = "Ollama Pipeline"
        pass

    async def on_startup(self):
        # This function is called when the server is started.
        print(f"on_startup:{__name__}")
        pass

    async def on_shutdown(self):
        # This function is called when the server is stopped.
        print(f"on_shutdown:{__name__}")
        pass

    def pipe(
        self, user_message: str, model_id: str, messages: List[dict], body: dict
    ) -> Union[str, Generator, Iterator]:
        # This is where you can add your custom pipelines like RAG.
        print(f"pipe:{__name__}")

        OLLAMA_BASE_URL = "http://localhost:11434"
        MODEL = "llama3"

        if "user" in body:
            print("######################################")
            print(f'# User: {body["user"]["name"]} ({body["user"]["id"]})')
            print(f"# Message: {user_message}")
            print("######################################")

        try:
            r = requests.post(
                url=f"{OLLAMA_BASE_URL}/v1/chat/completions",
                json={**body, "model": MODEL},
                stream=True,
            )

            r.raise_for_status()

            if body["stream"]:
                return r.iter_lines()
            else:
                return r.json()
        except Exception as e:
            return f"Error: {e}"