app.py

import os
import re
from http import HTTPStatus
from typing import Dict, List, Optional, Tuple
import base64

import dashscope
import gradio as gr
from dashscope import Generation
from dashscope.api_entities.dashscope_response import Role

import modelscope_studio.components.base as ms
import modelscope_studio.components.legacy as legacy
import modelscope_studio.components.antd as antd
from config import DEMO_LIST, SystemPrompt

# --- Setup API key ---
YOUR_API_TOKEN = os.getenv('YOUR_API_TOKEN')
if not YOUR_API_TOKEN:
    raise ValueError("Environment variable 'YOUR_API_TOKEN' not set.")
dashscope.api_key = YOUR_API_TOKEN

History = List[Tuple[str, str]]
Messages = List[Dict[str, str]]

def history_to_messages(history: History, system: str) -> Messages:
    messages = [{'role': Role.SYSTEM, 'content': system}]
    for h in history:
        messages.append({'role': Role.USER, 'content': h[0]})
        messages.append({'role': Role.ASSISTANT, 'content': h[1]})
    return messages

def messages_to_history(messages: Messages) -> Tuple[str, History]:
    assert messages[0]['role'] == Role.SYSTEM
    history = []
    for q, r in zip(messages[1::2], messages[2::2]):
        history.append([q['content'], r['content']])
    return history

def remove_code_block(text):
    try:
        pattern = r'```html\n(.+?)\n```'
        match = re.search(pattern, text, re.DOTALL)
        return match.group(1).strip() if match else text.strip()
    except Exception as e:
        print("Error in remove_code_block:", e)
        return text

def history_render(history: History):
    return gr.update(open=True), history

def clear_history():
    return []

def send_to_sandbox(code):
    try:
        encoded_html = base64.b64encode(code.encode('utf-8')).decode('utf-8')
        data_uri = f"data:text/html;charset=utf-8;base64,{encoded_html}"
        return f"<iframe src=\"{data_uri}\" width=\"100%\" height=\"920px\"></iframe>"
    except Exception as e:
        print("Error in send_to_sandbox:", e)
        return "<p>Error rendering code</p>"

def demo_card_click(e: gr.EventData):
    try:
        index = e._data['component']['index']
        return DEMO_LIST[index]['description']
    except Exception as e:
        print("Error in demo_card_click:", e)
        return ""

with gr.Blocks(css_paths="app.css") as demo:
    history = gr.State([])
    setting = gr.State({"system": SystemPrompt})

    with ms.Application() as app:
        with antd.ConfigProvider():
            with antd.Row(gutter=[32, 12]):
                with antd.Col(span=24, md=8):
                    with antd.Flex(vertical=True, gap="middle", wrap=True):
                        gr.HTML("""
                            <div class="left_header">
                             <img src="//img.alicdn.com/imgextra/i2/O1CN01KDhOma1DUo8oa7OIU_!!6000000000220-1-tps-240-240.gif" width="200px" />
                             <h1>Qwen2.5-Coder</h2>
                            </div>
                        """)
                        input = antd.InputTextarea(size="large", allow_clear=True, placeholder="Please enter what kind of application you want")
                        btn = antd.Button("send", type="primary", size="large")
                        clear_btn = antd.Button("clear history", type="default", size="large")

                        antd.Divider("examples")
                        with antd.Flex(gap="small", wrap=True):
                            for demo_item in DEMO_LIST:
                                with antd.Card(hoverable=True, as_item="card") as demoCard:
                                    antd.CardMeta()
                                demoCard.click(demo_card_click, outputs=[input])

                        antd.Divider("setting")
                        with antd.Flex(gap="small", wrap=True):
                            settingPromptBtn = antd.Button("⚙️ set system Prompt", type="default")
                            codeBtn = antd.Button("🧑‍💻 view code", type="default")
                            historyBtn = antd.Button("📜 history", type="default")

                    with antd.Modal(open=False, title="set system Prompt", width="800px") as system_prompt_modal:
                        systemPromptInput = antd.InputTextarea(SystemPrompt, auto_size=True)

                    settingPromptBtn.click(lambda: gr.update(open=True), inputs=[], outputs=[system_prompt_modal])
                    system_prompt_modal.ok(lambda input: ({"system": input}, gr.update(open=False)), inputs=[systemPromptInput], outputs=[setting, system_prompt_modal])
                    system_prompt_modal.cancel(lambda: gr.update(open=False), outputs=[system_prompt_modal])

                    with antd.Drawer(open=False, title="code", placement="left", width="750px") as code_drawer:
                        code_output = legacy.Markdown()

                    codeBtn.click(lambda: gr.update(open=True), inputs=[], outputs=[code_drawer])
                    code_drawer.close(lambda: gr.update(open=False), inputs=[], outputs=[code_drawer])

                    with antd.Drawer(open=False, title="history", placement="left", width="900px") as history_drawer:
                        history_output = legacy.Chatbot(show_label=False, flushing=False, height=960, elem_classes="history_chatbot")

                    historyBtn.click(history_render, inputs=[history], outputs=[history_drawer, history_output])
                    history_drawer.close(lambda: gr.update(open=False), inputs=[], outputs=[history_drawer])

                with antd.Col(span=24, md=16):
                    with ms.Div(elem_classes="right_panel"):
                        gr.HTML('<div class="render_header"><span class="header_btn"></span><span class="header_btn"></span><span class="header_btn"></span></div>')
                        with antd.Tabs(active_key="empty", render_tab_bar="() => null") as state_tab:
                            with antd.Tabs.Item(key="empty"):
                                antd.Empty(description="empty input", elem_classes="right_content")
                            with antd.Tabs.Item(key="loading"):
                                antd.Spin(True, tip="coding...", size="large", elem_classes="right_content")
                            with antd.Tabs.Item(key="render"):
                                sandbox = gr.HTML(elem_classes="html_content")

            def generation_code(query: Optional[str], _setting: Dict[str, str], _history: Optional[History]):
                try:
                    if query is None:
                        query = ''
                    if _history is None:
                        _history = []
                    messages = history_to_messages(_history, _setting['system'])
                    messages.append({'role': Role.USER, 'content': query})
                    print("Sending messages to dashscope:", messages)

                    gen = Generation.call(
                        model="qwen2.5-coder-32b-instruct",
                        messages=messages,
                        result_format='message',
                        stream=True
                    )

                    for response in gen:
                        print("Response received:", response)
                        if response.status_code == HTTPStatus.OK:
                            role = response.output.choices[0].message.role
                            content = response.output.choices[0].message.content
                            print("Content:", content)

                            if response.output.choices[0].finish_reason == 'stop':
                                _history = messages_to_history(messages + [{'role': role, 'content': content}])
                                yield {
                                    code_output: content,
                                    history: _history,
                                    sandbox: send_to_sandbox(remove_code_block(content)),
                                    state_tab: gr.update(active_key="render"),
                                    code_drawer: gr.update(open=False),
                                }
                            else:
                                yield {
                                    code_output: content,
                                    state_tab: gr.update(active_key="loading"),
                                    code_drawer: gr.update(open=True),
                                }
                        else:
                            raise ValueError(
                                f"Request ID: {response.request_id}, Status code: {response.status_code}, "
                                f"Error Code: {response.code}, Error Message: {response.message}"
                            )
                except Exception as e:
                    print("Error in generation_code:", e)
                    yield {
                        code_output: f"❌ Error: {e}",
                        sandbox: "",
                        state_tab: gr.update(active_key="empty")
                    }

            btn.click(generation_code,
                      inputs=[input, setting, history],
                      outputs=[code_output, history, sandbox, state_tab, code_drawer])

            clear_btn.click(clear_history, inputs=[], outputs=[history])

if __name__ == "__main__":
    demo.queue(default_concurrency_limit=20).launch(ssr_mode=False)