from modelscope import AutoModelForCausalLM, AutoTokenizer, GenerationConfig, snapshot_download
from argparse import ArgumentParser
from pathlib import Path
import shutil
import copy
import gradio as gr
import os
import re
import secrets
import tempfile

#GlobalVariables
os.environ['CUDA_VISIBLE_DEVICES'] = '0,1'
DEFAULT_CKPT_PATH = 'qwen/Qwen-VL-Chat'
REVISION = 'v1.0.4'
BOX_TAG_PATTERN = r"<box>([\s\S]*?)</box>"
PUNCTUATION = "ï¼ï¼Ÿã€‚ï¼‚ï¼ƒï¼„ï¼…ï¼†ï¼‡ï¼ˆï¼‰ï¼Šï¼‹ï¼Œï¼ï¼ï¼šï¼›ï¼œï¼ï¼žï¼ ï¼»ï¼¼ï¼½ï¼¾ï¼¿ï½€ï½›ï½œï½ï½žï½Ÿï½ ï½¢ï½£ï½¤ã€ã€ƒã€‹ã€Œã€ã€Žã€ã€ã€‘ã€”ã€•ã€–ã€—ã€˜ã€™ã€šã€›ã€œã€ã€žã€Ÿã€°ã€¾ã€¿â€“â€”â€˜â€™â€›â€œâ€â€žâ€Ÿâ€¦â€§ï¹."
uploaded_file_dir = os.environ.get("GRADIO_TEMP_DIR") or str(Path(tempfile.gettempdir()) / "gradio")
tokenizer = None
model = None

def _get_args() -> ArgumentParser:
    parser = ArgumentParser()
    parser.add_argument("-c", "--checkpoint-path", type=str, default=DEFAULT_CKPT_PATH,
                        help="Checkpoint name or path, default to %(default)r")
    parser.add_argument("--revision", type=str, default=REVISION)
    parser.add_argument("--cpu-only", action="store_true", help="Run demo with CPU only")

    parser.add_argument("--share", action="store_true", default=False,
                        help="Create a publicly shareable link for the interface.")
    parser.add_argument("--inbrowser", action="store_true", default=False,
                        help="Automatically launch the interface in a new tab on the default browser.")
    parser.add_argument("--server-port", type=int, default=8000,
                        help="Demo server port.")
    parser.add_argument("--server-name", type=str, default="127.0.0.1",
                        help="Demo server name.")

    args = parser.parse_args()
    return args

def handle_image_submission(_chatbot, task_history, file) -> tuple:
    print("handle_image_submission called")
    if file is None:
        print("No file uploaded")
        return _chatbot, task_history
    print("File received:", file)
    file_path = save_image(file, uploaded_file_dir)
    print("File saved at:", file_path)
    history_item = ((file_path,), None)
    _chatbot.append(history_item)
    task_history.append(history_item)
    return predict(_chatbot, task_history, tokenizer, model)

    
def _load_model_tokenizer(args) -> tuple:
    global tokenizer, model
    model_id = args.checkpoint_path
    model_dir = snapshot_download(model_id, revision=args.revision)
    tokenizer = AutoTokenizer.from_pretrained(
        model_dir, trust_remote_code=True, resume_download=True,
    )

    if args.cpu_only:
        device_map = "cpu"
    else:
        device_map = "auto"

    model = AutoModelForCausalLM.from_pretrained(
        model_dir,
        device_map=device_map,
        trust_remote_code=True,
        bf16=True,
        resume_download=True,
    ).eval()
    model.generation_config = GenerationConfig.from_pretrained(
        model_dir, trust_remote_code=True, resume_download=True,
    )

    return model, tokenizer


def _parse_text(text: str) -> str:
    lines = text.split("\n")
    lines = [line for line in lines if line != ""]
    count = 0
    for i, line in enumerate(lines):
        if "```" in line:
            count += 1
            items = line.split("`")
            if count % 2 == 1:
                lines[i] = f'<pre><code class="language-{items[-1]}">'
            else:
                lines[i] = f"<br></code></pre>"
        else:
            if i > 0:
                if count % 2 == 1:
                    line = line.replace("`", r"\`")
                    line = line.replace("<", "&lt;")
                    line = line.replace(">", "&gt;")
                    line = line.replace(" ", "&nbsp;")
                    line = line.replace("*", "&ast;")
                    line = line.replace("_", "&lowbar;")
                    line = line.replace("-", "&#45;")
                    line = line.replace(".", "&#46;")
                    line = line.replace("!", "&#33;")
                    line = line.replace("(", "&#40;")
                    line = line.replace(")", "&#41;")
                    line = line.replace("$", "&#36;")
                lines[i] = "<br>" + line
    text = "".join(lines)
    return text

def save_image(image_file, upload_dir: str) -> str:
    print("save_image called with:", image_file)
    Path(upload_dir).mkdir(parents=True, exist_ok=True)
    filename = secrets.token_hex(10) + Path(image_file.name).suffix
    file_path = Path(upload_dir) / filename
    print("Saving to:", file_path)
    with open(image_file.name, "rb") as f_input, open(file_path, "wb") as f_output:
        f_output.write(f_input.read())
    return str(file_path)


def add_file(history, task_history, file):
    if file is None:
        return history, task_history
    file_path = save_image(file)
    history = history + [((file_path,), None)]
    task_history = task_history + [((file_path,), None)]
    return history, task_history


def predict(_chatbot, task_history) -> list:
    print("predict called")
    if not _chatbot:
        return _chatbot 
    chat_query = _chatbot[-1][0]
    print("Chat query:", chat_query)

    if isinstance(chat_query, tuple):
        query = [{'image': chat_query[0]}]
    else:
        query = [{'text': _parse_text(chat_query)}]

    print("Query for model:", query)
    inputs = tokenizer.from_list_format(query)
    tokenized_inputs = tokenizer(inputs, return_tensors='pt')
    tokenized_inputs = tokenized_inputs.to(model.device)

    pred = model.generate(**tokenized_inputs)
    response = tokenizer.decode(pred.cpu()[0], skip_special_tokens=False)
    print("Model response:", response)
    if 'image' in query[0]:
        image = tokenizer.draw_bbox_on_latest_picture(response)
        if image is not None:
            image_path = save_image(image, uploaded_file_dir)
            _chatbot[-1] = (chat_query, (image_path,))
        else:
            _chatbot[-1] = (chat_query, "No image to display.")
    else:
        _chatbot[-1] = (chat_query, response)
    return _chatbot

def save_uploaded_image(image_file, upload_dir):
    if image is None:
        return None
    temp_dir = secrets.token_hex(20)
    temp_dir = Path(uploaded_file_dir) / temp_dir
    temp_dir.mkdir(exist_ok=True, parents=True)
    name = f"tmp{secrets.token_hex(5)}.jpg"
    filename = temp_dir / name
    image.save(str(filename))
    return str(filename)

def regenerate(_chatbot, task_history) -> list:
    if not task_history:
        return _chatbot
    item = task_history[-1]
    if item[1] is None:
        return _chatbot
    task_history[-1] = (item[0], None)
    chatbot_item = _chatbot.pop(-1)
    if chatbot_item[0] is None:
        _chatbot[-1] = (_chatbot[-1][0], None)
    else:
        _chatbot.append((chatbot_item[0], None))
    return predict(_chatbot, task_history, tokenizer, model)

def add_text(history, task_history, text) -> tuple:
    task_text = text
    if len(text) >= 2 and text[-1] in PUNCTUATION and text[-2] not in PUNCTUATION:
        task_text = text[:-1]
        history = history + [(_parse_text(text), None)]
        task_history = task_history + [(task_text, None)]
        return history, task_history, ""

def add_file(history, task_history, file):
    if file is None:
        return history, task_history  # Return if no file is uploaded
    file_path = file.name
    history = history + [((file.name,), None)]
    task_history = task_history + [((file.name,), None)]
    return history, task_history

def reset_user_input():
    return gr.update(value="")
    
def process_response(response: str) -> str:
    response = response.replace("<ref>", "").replace(r"</ref>", "")
    response = re.sub(BOX_TAG_PATTERN, "", response)
    return response
    
def process_history_for_model(task_history) -> list:
    processed_history = []
    for query, response in task_history:
        if isinstance(query, tuple): 
            query = {'image': query[0]}
        else:
            query = {'text': query}
        response = response or ""
        processed_history.append((query, response))
    return processed_history

def reset_state(task_history) -> list:
    task_history.clear()
    return []


def _launch_demo(args, model, tokenizer):
    uploaded_file_dir = os.environ.get("GRADIO_TEMP_DIR") or str(
        Path(tempfile.gettempdir()) / "gradio"
    )

    with gr.Blocks() as demo:
        gr.Markdown("""
# 🙋🏻‍♂️欢迎来到🌟Tonic 的🦄Qwen-VL-Chat🤩Bot！🚀
# 🙋🏻‍♂️Welcome toTonic's Qwen-VL-Chat Bot! 
该WebUI基于Qwen-VL-Chat，实现聊天机器人功能。 但我必须解决它的很多问题，也许我也能获得一些荣誉。
Qwen-VL-Chat 是一种多模式输入模型。 您可以使用此空间来测试当前模型 [qwen/Qwen-VL-Chat](https://huggingface.co/qwen/Qwen-VL-Chat) 您也可以使用 🧑🏻‍🚀qwen/Qwen-VL -通过克隆这个空间来聊天🚀。 🧬🔬🔍 只需点击这里：[重复空间](https://huggingface.co/spaces/Tonic1/VLChat?duplicate=true)
加入我们：🌟TeamTonic🌟总是在制作很酷的演示！ 在 👻Discord 上加入我们活跃的构建者🛠️社区：[Discord](https://discord.gg/nXx5wbX9) 在 🤗Huggingface 上：[TeamTonic](https://huggingface.co/TeamTonic) 和 [MultiTransformer](https:/ /huggingface.co/MultiTransformer) 在 🌐Github 上：[Polytonic](https://github.com/tonic-ai) 并为 🌟 [PolyGPT](https://github.com/tonic-ai/polygpt-alpha) 做出贡献 ）
This WebUI is based on Qwen-VL-Chat, implementing chatbot functionalities. Qwen-VL-Chat is a multimodal input model. You can use this Space to test out the current model [qwen/Qwen-VL-Chat](https://huggingface.co/qwen/Qwen-VL-Chat) You can also use  qwen/Qwen-VL-Chat🚀 by cloning this space.   Simply click here: [Duplicate Space](https://huggingface.co/spaces/Tonic1/VLChat?duplicate=true)
Join us:  TeamTonic  is always making cool demos! Join our active builder's community on  Discord: [Discord](https://discord.gg/nXx5wbX9) On  Huggingface: [TeamTonic](https://huggingface.co/TeamTonic) & [MultiTransformer](https://huggingface.co/MultiTransformer) On  Github: [Polytonic](https://github.com/tonic-ai) & contribute to   [PolyGPT](https://github.com/tonic-ai/polygpt-alpha)
""")
        with gr.Row():
            with gr.Column(scale=1):
                chatbot = gr.Chatbot(label='Qwen-VL-Chat')
            with gr.Column(scale=1):
                with gr.Row():
                    query = gr.Textbox(lines=2, label='Input', placeholder="Type your message here...")
                    submit_btn = gr.Button("🚀 Submit")
                with gr.Row():
                    file_upload = gr.UploadButton("📁 Upload Image", file_types=["image"])
                    submit_file_btn = gr.Button("Submit Image")
                    regen_btn = gr.Button("🤔️ Regenerate")
                    empty_bin = gr.Button("🧹 Clear History")
                task_history = gr.State([])

        submit_btn.click(
            fn=predict,
            inputs=[chatbot, task_history],
            outputs=[chatbot]
        )
        
        submit_file_btn.click(
            fn=handle_image_submission,
            inputs=[chatbot, task_history, file_upload],
            outputs=[chatbot, task_history]
        )

        regen_btn.click(
            fn=regenerate,
            inputs=[chatbot, task_history],
            outputs=[chatbot]
        )

        empty_bin.click(
            fn=reset_state,
            inputs=[task_history],
            outputs=[task_history],
        )

        query.submit(
            fn=add_text,
            inputs=[chatbot, task_history, query],
            outputs=[chatbot, task_history, query]
        )

        gr.Markdown("""
注意：此演示受 Qwen-VL 原始许可证的约束。我们强烈建议用户不要故意生成或允许他人故意生成有害内容，
包括仇恨言论、暴力、色情、欺骗等。（注：本演示受Qwen-VL许可协议约束，强烈建议用户不要传播或允许他人传播以下内容，包括但不限于仇恨言论、暴力、色情、欺诈相关的有害信息 .)
Note: This demo is governed by the original license of Qwen-VL. We strongly advise users not to knowingly generate or allow others to knowingly generate harmful content,
including hate speech, violence, pornography, deception, etc. (Note: This demo is subject to the license agreement of Qwen-VL. We strongly advise users not to disseminate or allow others to disseminate the following content, including but not limited to hate speech, violence, pornography, and fraud-related harmful information.)
""")

    demo.queue().launch()


def main():
    args = _get_args()
    model, tokenizer = _load_model_tokenizer(args)
    _launch_demo(args, model, tokenizer)

if __name__ == '__main__':
    main()