import asyncio
import os, tempfile
import logging

import json
import requests

from transformers import AutoTokenizer, AutoConfig
from huggingface_hub import hf_hub_download

import io
import base64
from PIL import Image, PngImagePlugin

logger = logging.getLogger(__name__)


async def generate_sync(
    prompt: str,
    api_key: str,
    bot_name: str,
):
    # Set the API endpoint URL
    endpoint = "https://api.runpod.ai/v2/pygmalion-6b/runsync"

    # Set the headers for the request
    headers = {
        "Content-Type": "application/json",
        "Authorization": f"Bearer {api_key}"
    }

    max_new_tokens = 200
    prompt_num_tokens = await num_tokens(prompt)

    # Define your inputs
    input_data = {
        "input": {
            "prompt": prompt,
            "max_length": min(prompt_num_tokens+max_new_tokens, 2048),
            "temperature": 0.80,
            "do_sample": True,
        }
    }

    logger.info(f"sending request to runpod.io")

    # Make the request
    r = requests.post(endpoint, json=input_data, headers=headers, timeout=180)

    r_json = r.json()
    logger.info(r_json)
    status = r_json["status"]

    if status == 'COMPLETED':
        text = r_json["output"]
        answer = text.removeprefix(prompt)
#        lines = reply.split('\n')
#        reply = lines[0].strip()
        idx = answer.find(f"\nYou:")
        if idx != -1:
            reply = answer[:idx].strip()
        else:
            reply = answer.removesuffix('<|endoftext|>').strip()
        reply = reply.replace("\n{bot_name}: ", " ")
        reply = reply.replace("\n<BOT>: ", " ")
        return reply
    elif status == 'IN_PROGRESS' or status == 'IN_QUEUE':
        job_id = r_json["id"]
        TIMEOUT = 360
        DELAY = 5
        for i in range(TIMEOUT//DELAY):
            endpoint = "https://api.runpod.ai/v2/pygmalion-6b/status/" + job_id
            r = requests.get(endpoint, headers=headers)
            r_json = r.json()
            logger.info(r_json)
            status = r_json["status"]
            if status == 'IN_PROGRESS':
                await asyncio.sleep(DELAY)
            elif status == 'IN_QUEUE':
                await asyncio.sleep(DELAY)
            elif status == 'COMPLETED':
                text = r_json["output"]
                answer = text.removeprefix(prompt)
#                lines = reply.split('\n')
#                reply = lines[0].strip()
                idx = answer.find(f"\nYou:")
                if idx != -1:
                    reply = answer[:idx].strip()
                else:
                    reply = answer.removesuffix('<|endoftext|>').strip()
                reply = reply.replace("\n{bot_name}: ", " ")
                reply = reply.replace("\n<BOT>: ", " ")
                return reply
            else:
                return "<ERROR>"
    else:
        return "<ERROR>"

async def get_full_prompt(simple_prompt: str, bot, chat_history):

    # Prompt without history
    prompt = bot.name + "'s Persona: " + bot.persona + "\n"
    prompt += "Scenario: " + bot.scenario + "\n"
    prompt += "<START>" + "\n"
    #prompt += bot.name + ": " + bot.greeting + "\n"
    prompt += "You: " + simple_prompt + "\n"
    prompt += bot.name + ":"

    MAX_TOKENS = 2048
    max_new_tokens = 200
    total_num_tokens = await num_tokens(prompt)
    visible_history = []
    current_message = True
    for key, chat_item in reversed(chat_history.chat_history.items()):
        if current_message:
            current_message = False
            continue
        if chat_item.message["en"].startswith('!begin'):
            break
        if chat_item.message["en"].startswith('!'):
            continue
        if chat_item.message["en"].startswith('<ERROR>'):
            continue
        #if chat_item.message["en"] == bot.greeting:
        #    continue
        if chat_item.num_tokens == None:
            chat_item.num_tokens = await num_tokens("{}: {}".format(chat_item.user_name, chat_item.message["en"]))
        # TODO: is it MAX_TOKENS or MAX_TOKENS - max_new_tokens??
        logger.debug(f"History: " + str(chat_item) + " [" + str(chat_item.num_tokens) + "]")
        if total_num_tokens + chat_item.num_tokens < MAX_TOKENS - max_new_tokens:
            visible_history.append(chat_item)
            total_num_tokens += chat_item.num_tokens
        else:
            break
    visible_history = reversed(visible_history)

    prompt = bot.name + "'s Persona: " + bot.persona + "\n"
    prompt += "Scenario: " + bot.scenario + "\n"
    prompt += "<START>" + "\n"
    #prompt += bot.name + ": " + bot.greeting + "\n"
    for chat_item in visible_history:
        if chat_item.is_own_message:
            prompt += bot.name + ": " + chat_item.message["en"] + "\n"
        else:
            prompt += "You" + ": " + chat_item.message["en"] + "\n"
    prompt += "You: " + simple_prompt + "\n"
    prompt += bot.name + ":"

    return prompt


async def num_tokens(input_text: str):
#    os.makedirs("./models/pygmalion-6b", exist_ok=True)
#    hf_hub_download(repo_id="PygmalionAI/pygmalion-6b", filename="config.json", cache_dir="./models/pygmalion-6b")
#    config = AutoConfig.from_pretrained("./models/pygmalion-6b/config.json")
    tokenizer = AutoTokenizer.from_pretrained("PygmalionAI/pygmalion-6b")
    encoding = tokenizer.encode(input_text, add_special_tokens=False)
    max_input_size = tokenizer.max_model_input_sizes
    return len(encoding)

async def estimate_num_tokens(input_text: str):
    return len(input_text)//4+1


async def download_image(url, path):
    r = requests.get(url, stream=True)
    if r.status_code == 200:
        with open(path, 'wb') as f:
            for chunk in r:
                f.write(chunk)

async def generate_image(input_prompt: str, negative_prompt: str, api_url: str, api_key: str):

    # Set the API endpoint URL
    endpoint = api_url + "run"

    # Set the headers for the request
    headers = {
        "Content-Type": "application/json",
        "Authorization": f"Bearer {api_key}"
    }

    # Define your inputs
    input_data = {
        "input": {
            "prompt": input_prompt,
            "negative_prompt": negative_prompt,
            "width": 512,
            "height": 768,
#            "nsfw": True
        },
    }

    logger.info(f"sending request to runpod.io")

    # Make the request
    r = requests.post(endpoint, json=input_data, headers=headers)
    r_json = r.json()
    logger.debug(r_json)

    if r.status_code == 200:
        status = r_json["status"]
        if status != 'IN_QUEUE':
            err_msg = r_json["error"] if "error" in r_json else ""
            raise ValueError(f"RETURN CODE {status}: {err_msg}")
        job_id = r_json["id"]
        TIMEOUT = 360
        DELAY = 5
        output = None
        for i in range(TIMEOUT//DELAY):
            endpoint = api_url + "status/" + job_id
            r = requests.get(endpoint, headers=headers)
            r_json = r.json()
            logger.debug(r_json)
            status = r_json["status"]
            if status == 'IN_PROGRESS':
                await asyncio.sleep(DELAY)
            elif status == 'IN_QUEUE':
                await asyncio.sleep(DELAY)
            elif status == 'COMPLETED':
                output = r_json["output"]
                break
            else:
                err_msg = r_json["error"] if "error" in r_json else ""
                raise ValueError(f"RETURN CODE {status}: {err_msg}")

        if not output:
            raise ValueError(f"<ERROR>")

        os.makedirs("./images", exist_ok=True)
        files = []
        for image in output:
            temp_name = next(tempfile._get_candidate_names())
            filename = "./images/" + temp_name + ".jpg"
            await download_image(image["image"], filename)
            files.append(filename)

        return files

async def generate_image1(input_prompt: str, negative_prompt: str, api_key: str):
    return await generate_image(input_prompt, negative_prompt, "https://api.runpod.ai/v1/sd-anything-v4/", api_key)

async def generate_image2(input_prompt: str, negative_prompt: str, api_key: str):
    return await generate_image(input_prompt, negative_prompt, "https://api.runpod.ai/v1/sd-openjourney/", api_key)

async def generate_image3(input_prompt: str, negative_prompt: str, api_key: str):
    return await generate_image(input_prompt, negative_prompt, "https://api.runpod.ai/v1/mf5f6mocy8bsvx/", api_key)

async def generate_image4(input_prompt: str, negative_prompt: str, api_key: str):
    return await generate_image_automatic(input_prompt, negative_prompt, "https://api.runpod.ai/v1/lxdhmiccp3vdsf/", api_key)

async def generate_image5(input_prompt: str, negative_prompt: str, api_key: str):
    return await generate_image_automatic(input_prompt, negative_prompt, "https://api.runpod.ai/v1/13rrs00l7yxikf/", api_key)

async def generate_image6(input_prompt: str, negative_prompt: str, api_key: str):
    return await generate_image_automatic(input_prompt, negative_prompt, "https://api.runpod.ai/v1/5j1xzlsyw84vk5/", api_key)

async def serverless_automatic_request(payload, cmd, api_url: str, api_key: str):
    # Set the API endpoint URL
    endpoint = api_url + "run"

    # Set the headers for the request
    headers = {
        "Content-Type": "application/json",
        "Authorization": f"Bearer {api_key}"
    }

    # Define your inputs
    #payload.update({"api_endpoint": cmd})
    input_data = {
        "input": payload,
        "cmd": cmd,
    }

    logger.info(f"sending request to runpod.io")

    # Make the request
    r = requests.post(endpoint, json=input_data, headers=headers)
    r_json = r.json()
    logger.info(r_json)

    if r.status_code == 200:
        status = r_json["status"]
        if status != 'IN_QUEUE':
            err_msg = r_json["error"] if "error" in r_json else ""
            raise ValueError(f"RETURN CODE {status}: {err_msg}")
        job_id = r_json["id"]
        TIMEOUT = 360
        DELAY = 5
        output = None
        for i in range(TIMEOUT//DELAY):
            endpoint = api_url + "status/" + job_id
            r = requests.get(endpoint, headers=headers)
            r_json = r.json()
            logger.info(r_json)
            status = r_json["status"]
            if status == 'IN_PROGRESS':
                await asyncio.sleep(DELAY)
            elif status == 'IN_QUEUE':
                await asyncio.sleep(DELAY)
            elif status == 'COMPLETED':
                output = r_json["output"]
                break
            else:
                err_msg = r_json["error"] if "error" in r_json else ""
                raise ValueError(f"RETURN CODE {status}: {err_msg}")

        if not output:
            raise ValueError(f"<ERROR> {status}")

        return output


async def generate_image_automatic(input_prompt: str, negative_prompt: str, api_url: str, api_key: str):
    payload = {
        "prompt": input_prompt,
        "nagative_prompt": negative_prompt,
        "steps": 20,
        "seed": -1,
        "width": 512,
        "height": 768,
        "restore_faces": True,
        "gfpgan_visibility": 0.5,
        "codeformer_visibility": 0.5,
        "codeformer_weight": 0.5,
#        "override_settings": {
#            "filter_nsfw": False,
#        },
    }

    output = await serverless_automatic_request(payload, "txt2img", api_url, api_key)

    upscale = False
    if upscale:
        count = 0
        for i in output['images']:
            payload = {
                "images": [i],
                "prompt": input_prompt,
                "nagative_prompt": negative_prompt,
                "steps": 20,
                "seed": -1,
#                                  tile_width, tile_height, mask_blur, padding, seams_fix_width, seams_fix_denoise, seams_fix_padding, upscaler_index, save_upscaled_image, redraw_mode, save_seams_fix_image, seams_fix_mask_blur, seams_fix_type, target_size_type, custom_width, custom_height, custom_scale
#                "script_args": ["",512,0,8,32,64,0.275,32,3,False,0,True,8,3,2,1080,1440,1.875],
#                "script_name": "Ultimate SD upscale",
            }
            upscaled_output = await serverless_automatic_request(payload, "img2img", api_url, api_key)
            output['images'][count] = upscaled_output['images'][count]

    os.makedirs("./images", exist_ok=True)
    files = []
    for i in output['images']:
        temp_name = next(tempfile._get_candidate_names())
        filename = "./images/" + temp_name + ".png"
        image = Image.open(io.BytesIO(base64.b64decode(i.split(",",1)[0])))
        info = output['info']
        parameters = output['parameters']
        pnginfo = PngImagePlugin.PngInfo()
        pnginfo.add_text("parameters", info)
        image.save(filename, pnginfo=pnginfo)

        files.append(filename)

    return files