from flask import jsonify

from ..llm_backend import LLMBackend
from ...database.database import log_prompt
from ...helpers import safe_list_get
from ...routes.cache import redis
from ...routes.helpers.client import format_sillytavern_err
from ...routes.helpers.http import validate_json


class OobaboogaBackend(LLMBackend):
    default_params = {}

    def handle_response(self, success, request, response, error_msg, client_ip, token, prompt, elapsed_time, parameters, headers):
        raise NotImplementedError('need to implement default_params')

        backend_err = False
        response_valid_json, response_json_body = validate_json(response)
        if response:
            try:
                # Be extra careful when getting attributes from the response object
                response_status_code = response.status_code
            except:
                response_status_code = 0
        else:
            response_status_code = None

        # ===============================================

        # We encountered an error
        if not success or not response or error_msg:
            if not error_msg or error_msg == '':
                error_msg = 'Unknown error.'
            else:
                error_msg = error_msg.strip('.') + '.'
            backend_response = format_sillytavern_err(error_msg, 'error')
            log_prompt(client_ip, token, prompt, backend_response, None, parameters, headers, response_status_code, request.url, is_error=True)
            return jsonify({
                'code': 500,
                'msg': error_msg,
                'results': [{'text': backend_response}]
            }), 400

        # ===============================================

        if response_valid_json:
            backend_response = safe_list_get(response_json_body.get('results', []), 0, {}).get('text')
            if not backend_response:
                # Ooba doesn't return any error messages so we will just tell the client an error occurred
                backend_err = True
                backend_response = format_sillytavern_err(
                    f'Backend (oobabooga) returned an empty string. This is usually due to an error on the backend during inference. Please check your parameters and try again.',
                    'error')
                response_json_body['results'][0]['text'] = backend_response

            if not backend_err:
                redis.incr('proompts')

            log_prompt(client_ip, token, prompt, backend_response, elapsed_time if not backend_err else None, parameters, headers, response_status_code, request.url, response_tokens=response_json_body.get('details', {}).get('generated_tokens'), is_error=backend_err)
            return jsonify({
                **response_json_body
            }), 200
        else:
            backend_response = format_sillytavern_err(f'The backend did not return valid JSON.', 'error')
            log_prompt(client_ip, token, prompt, backend_response, elapsed_time, parameters, headers, response.status_code, request.url, is_error=True)
            return jsonify({
                'code': 500,
                'msg': 'the backend did not return valid JSON',
                'results': [{'text': backend_response}]
            }), 400

    def validate_params(self, params_dict: dict):
        # No validation required
        return True, None

    def get_parameters(self, parameters):
        del parameters['prompt']
        return parameters