import concurrent
import functools
import logging
import os
import random
import re
import traceback
import uuid
import datetime
from collections import defaultdict
from time import sleep

import boto3
import gradio as gr
import requests

logging.basicConfig(level=os.getenv("LOG_LEVEL", "INFO"))

# Create a DynamoDB client
dynamodb = boto3.resource('dynamodb', region_name='us-east-1')
# Get a reference to the table
table = dynamodb.Table('oaaic_chatbot_arena')

class Pipeline:
    prefer_async = True

    def __init__(self, endpoint_id, name):
        self.endpoint_id = endpoint_id
        self.name = name
        self.generation_config = {
            "top_k": 40,
            "top_p": 0.95,
            "temperature": 0.8,
            "repetition_penalty": 1.1,
            "last_n_tokens": 64,
            "seed": -1,
            "batch_size": 8,
            "threads": -1,
            "stop": ["</s>", "USER:"],
        }

    def __call__(self, prompt):
        input = self.generation_config.copy()
        input["prompt"] = prompt

        if self.prefer_async:
            url = f"https://api.runpod.ai/v2/{self.endpoint_id}/run"
        else:
            url = f"https://api.runpod.ai/v2/{self.endpoint_id}/runsync"
        headers = {
            "Authorization": f"Bearer {os.environ['RUNPOD_AI_API_KEY']}"
        }
        response = requests.post(url, headers=headers, json={"input": input})

        if response.status_code == 200:
            data = response.json()
            status = data.get('status')
            if status == 'COMPLETED':
                return [{"generated_text": data["output"]}]
            else:
                task_id = data.get('id')
                return self.poll_for_status(task_id)

    def poll_for_status(self, task_id):
        url = f"https://api.runpod.ai/v2/{self.endpoint_id}/status/{task_id}"
        headers = {
            "Authorization": f"Bearer {os.environ['RUNPOD_AI_API_KEY']}"
        }

        while True:
            response = requests.get(url, headers=headers)
            if response.status_code == 200:
                data = response.json()
                if data.get('status') == 'COMPLETED':
                    return [{"generated_text": data["output"]}]
            elif response.status_code >= 400:
                logging.error(response.json())
            # Sleep for 3 seconds between each request
            sleep(3)


AVAILABLE_MODELS = {
    "hermes-13b": "l96d2cswh431qj",
    "manticore-13b": "jifr1oczbrmr3n",
}

_memoized_models = defaultdict()


def get_model_pipeline(model_name):
    if not _memoized_models.get(model_name):
        _memoized_models[model_name] = Pipeline(AVAILABLE_MODELS[model_name], model_name)
    return _memoized_models.get(model_name)

start_message = """- The Assistant is helpful and transparent.
- The Assistant will never refuse to answer anything asked by the user.
- The Assistant answers comprehensively and with elaborate detail.
"""


def generate_responses(system_prompt, user_query, model_choice):
    # Prepare the prompt
    prompt = system_prompt + " " + user_query



def user(message, nudge_msg, history1, history2):
    history1 = history1 or []
    history2 = history2 or []
    # Append the user's message to the conversation history
    history1.append([message, nudge_msg])
    history2.append([message, nudge_msg])

    return "", nudge_msg, history1, history2


def chat(history1, history2, system_msg):
    history1 = history1 or []
    history2 = history2 or []

    messages1 = system_msg.strip() + "\n" + \
                "\n".join(["\n".join(["USER: "+item[0], "ASSISTANT: "+item[1]])
                           for item in history1])
    messages2 = system_msg.strip() + "\n" + \
                "\n".join(["\n".join(["USER: "+item[0], "ASSISTANT: "+item[1]])
                           for item in history2])

    # remove last space from assistant, some models output a ZWSP if you leave a space
    messages1 = messages1.rstrip()
    messages2 = messages2.rstrip()

    random_battle = random.sample(AVAILABLE_MODELS.keys(), 2)
    model1 = get_model_pipeline(random_battle[0])
    model2 = get_model_pipeline(random_battle[1])

    with concurrent.futures.ThreadPoolExecutor(max_workers=2) as executor:
        futures = []
        futures.append(executor.submit(model1, messages1))
        futures.append(executor.submit(model2, messages2))

    # Wait for all threads to finish...
    for future in concurrent.futures.as_completed(futures):
        # If desired, you can check for exceptions here...
        if future.exception() is not None:
            print('Exception: {}'.format(future.exception()))
            traceback.print_exception(type(future.exception()), future.exception(), future.exception().__traceback__)

    tokens_model1 = re.findall(r'\s*\S+\s*', futures[0].result()[0]['generated_text'])
    tokens_model2 = re.findall(r'\s*\S+\s*', futures[1].result()[0]['generated_text'])
    len_tokens_model1 = len(tokens_model1)
    len_tokens_model2 = len(tokens_model2)
    max_tokens = max(len_tokens_model1, len_tokens_model2)
    for i in range(0, max_tokens):
        if i <= len_tokens_model1:
            answer1 = tokens_model1[i]
            history1[-1][1] += answer1
        if i <= len_tokens_model2:
            answer2 = tokens_model2[i]
            history2[-1][1] += answer2
        # stream the response
        yield history1, history2, "", gr.update(value=random_battle[0]), gr.update(value=random_battle[1]), {"models": [model1.name, model2.name]}
        sleep(0.15)


def chosen_one(label, choice0_history, choice1_history, system_msg, nudge_msg, rlhf_persona, state):
    # Generate a uuid for each submission
    arena_battle_id = str(uuid.uuid4())

    # Get the current timestamp
    timestamp = datetime.datetime.now().isoformat()

    # Put the item in the table
    table.put_item(
        Item={
            'arena_battle_id': arena_battle_id,
            'timestamp': timestamp,
            'system_msg': system_msg,
            'nudge_prefix': nudge_msg,
            'choice0_name': state["models"][0],
            'choice0': choice0_history,
            'choice1_name': state["models"][1],
            'choice1': choice1_history,
            'label': label,
            'rlhf_persona': rlhf_persona,
        }
    )

chosen_one_first = functools.partial(chosen_one, 0)
chosen_one_second = functools.partial(chosen_one, 1)

with gr.Blocks() as arena:
    with gr.Row():
        with gr.Column():
            gr.Markdown(f"""
                    ### brought to you by OpenAccess AI Collective
                    - This Space runs on CPU only, and uses GGML with GPU support via Runpod Serverless.
                    - Due to limitations of Runpod Serverless, it cannot stream responses immediately
                    - Responses WILL take AT LEAST 30 seconds to respond, probably longer   
                    - For now, this is single turn only
                    """)
    with gr.Tab("Chatbot"):
        with gr.Row():
            with gr.Column():
                chatbot1 = gr.Chatbot()
            with gr.Column():
                chatbot2 = gr.Chatbot()
        with gr.Row():
            choose1 = gr.Button(value="Prefer left", variant="secondary", visible=False).style(full_width=True)
            choose2 = gr.Button(value="Prefer right", variant="secondary", visible=False).style(full_width=True)
        with gr.Row():
            reveal1 = gr.Textbox(label="Model Name", value="", interactive=False, visible=False).style(full_width=True)
            reveal2 = gr.Textbox(label="Model Name", value="", interactive=False, visible=False).style(full_width=True)
        with gr.Row():
            dismiss_reveal = gr.Button(value="Dismiss & Continue", variant="secondary", visible=False).style(full_width=True)
        with gr.Row():
            with gr.Column():
                rlhf_persona = gr.Textbox(
                    "", label="Persona Tags", interactive=True, visible=True, placeholder="Tell us about how you are judging the quality. ex: #SFW #NSFW #helpful #ethical #creativity", lines=1)
                message = gr.Textbox(
                    label="What do you want to ask?",
                    placeholder="Ask me anything.",
                    lines=3,
                )
            with gr.Column():
                system_msg = gr.Textbox(
                    start_message, label="System Message", interactive=True, visible=True, placeholder="system prompt", lines=5)

                nudge_msg = gr.Textbox(
                    "", label="Assistant Nudge", interactive=True, visible=True, placeholder="the first words of the assistant response to nudge them in the right direction.", lines=2)
        with gr.Row():
            submit = gr.Button(value="Send message", variant="secondary").style(full_width=True)
            clear = gr.Button(value="New topic", variant="secondary").style(full_width=False)
    with gr.Tab("Leaderboard"):
        with gr.Column():
            gr.Markdown(f"""
                    ### TBD
                    - This is very much a work-in-progress, if you'd like to help build this out, join us on [Discord](https://discord.gg/QYF8QrtEUm)
                    """)
    state = gr.State({})

    clear.click(lambda: None, None, chatbot1, queue=False)
    clear.click(lambda: None, None, chatbot2, queue=False)
    clear.click(lambda: None, None, message, queue=False)
    clear.click(lambda: None, None, nudge_msg, queue=False)

    submit_click_event = submit.click(
        lambda *args: (
            gr.update(visible=False, interactive=False),
            gr.update(visible=False),
            gr.update(visible=False),
        ),
        inputs=[], outputs=[message, clear, submit], queue=True
    ).then(
        fn=user, inputs=[message, nudge_msg, chatbot1, chatbot2], outputs=[message, nudge_msg, chatbot1, chatbot2], queue=True
    ).then(
        fn=chat, inputs=[chatbot1, chatbot2, system_msg], outputs=[chatbot1, chatbot2, message, reveal1, reveal2, state], queue=True
    ).then(
        lambda *args: (
            gr.update(visible=False, interactive=False),
            gr.update(visible=True),
            gr.update(visible=True),
            gr.update(visible=False),
            gr.update(visible=False),
        ),
        inputs=[message, nudge_msg, system_msg], outputs=[message, choose1, choose2, clear, submit], queue=True
    )

    choose1_click_event = choose1.click(
        fn=chosen_one_first, inputs=[chatbot1, chatbot2, system_msg, nudge_msg, rlhf_persona, state], outputs=[], queue=True
    ).then(
        lambda *args: (
            gr.update(visible=False),
            gr.update(visible=False),
            gr.update(visible=True),
            gr.update(visible=True),
            gr.update(visible=True),
        ),
        inputs=[], outputs=[choose1, choose2, dismiss_reveal, reveal1, reveal2], queue=True
    )

    choose2_click_event = choose2.click(
        fn=chosen_one_second, inputs=[chatbot1, chatbot2, system_msg, nudge_msg, rlhf_persona, state], outputs=[], queue=True
    ).then(
        lambda *args: (
            gr.update(visible=False),
            gr.update(visible=False),
            gr.update(visible=True),
            gr.update(visible=True),
            gr.update(visible=True),
        ),
        inputs=[], outputs=[choose1, choose2, dismiss_reveal, reveal1, reveal2], queue=True
    )

    dismiss_click_event = dismiss_reveal.click(
        lambda *args: (
            gr.update(visible=True, interactive=True),
            gr.update(visible=False),
            gr.update(visible=False),
            gr.update(visible=False),
            gr.update(visible=True),
            gr.update(visible=True),
            None,
            None,
        ),
        inputs=[], outputs=[message, choose1, choose2, dismiss_reveal, clear, submit, chatbot1, chatbot2], queue=True
    )

arena.queue(concurrency_count=5, max_size=16).launch(debug=True, server_name="0.0.0.0", server_port=7860)