import os
import time
from typing import List, Tuple
from dataclasses import dataclass
from decimal import Decimal
import math

import tiktoken
import replicate

from parsee.extraction.models.llm_models.llm_base_model import LLMBaseModel, get_tokens_encoded, truncate_prompt
from parsee.extraction.models.model_dataclasses import MlModelSpecification
from parsee.extraction.models.llm_models.prompts import Prompt


class ReplicateModel(LLMBaseModel):

    def __init__(self, model: MlModelSpecification):
        super().__init__(model)
        self.max_retries = 5
        self.encoding = tiktoken.get_encoding("cl100k_base")
        self.max_tokens_answer = 1024
        self.max_tokens_question = self.spec.max_tokens - self.max_tokens_answer

    def _call_api(self, prompt: str, retries: int = 0, wait: int = 5) -> str:
        try:
            response = replicate.run(self.spec.internal_name, input={
                "prompt": prompt,
                "top_k": 50,
                "top_p": 0.9,
                "temperature": 0,
                "max_new_tokens": 1024,
                "presence_penalty": 0,
                "frequency_penalty": 0
            })
            answer = "".join(response)
            return answer
        except Exception as e:
            if retries < self.max_retries:
                time.sleep(wait * 2 ** retries)
                return self._call_api(prompt, retries + 1)
            else:
                return ""

    def make_prompt_request(self, prompt: Prompt) -> Tuple[str, Decimal]:
        final_prompt, num_tokens_input = truncate_prompt(str(prompt), self.encoding, self.max_tokens_question)
        response = self._call_api(final_prompt)
        tokens_response = len(get_tokens_encoded(response, self.encoding))
        cost_input = (int(num_tokens_input) * Decimal(self.spec.price_per_1k_tokens / 1000)) if self.spec.price_per_1k_tokens is not None else Decimal(0)
        cost_output = (int(tokens_response) * Decimal(self.spec.price_per_1k_output_tokens / 1000)) if self.spec.price_per_1k_output_tokens is not None else Decimal(0)
        final_cost = cost_input + cost_output
        return response, final_cost
