app.py

import os
import openai
import gradio as gr

openai.api_key = os.environ['OPENAI_KEY']

supportLanguages = [
    ["auto", "auto"],
    ["粤语", "yue"],
    ["古文", "wyw"],
    ["af","Afrikaans"],
    ["ak","Akan"],
    ["sq","Albanian"],
    ["am","Amharic"],
    ["ar","Arabic"],
    ["hy","Armenian"],
    ["az","Azerbaijani"],
    ["eu","Basque"],
    ["be","Belarusian"],
    ["bem","Bemba"],
    ["bn","Bengali"],
    ["bh","Bihari"],
    ["xx-bork","Bork, bork, bork!"],
    ["bs","Bosnian"],
    ["br","Breton"],
    ["bg","Bulgarian"],
    ["km","Cambodian"],
    ["ca","Catalan"],
    ["chr","Cherokee"],
    ["ny","Chichewa"],
    ["zh-CN","Chinese (Simplified)"],
    ["zh-TW","Chinese (Traditional)"],
    ["co","Corsican"],
    ["hr","Croatian"],
    ["cs","Czech"],
    ["da","Danish"],
    ["nl","Dutch"],
    ["xx-elmer","Elmer Fudd"],
    ["en","English"],
    ["eo","Esperanto"],
    ["et","Estonian"],
    ["ee","Ewe"],
    ["fo","Faroese"],
    ["tl","Filipino"],
    ["fi","Finnish"],
    ["fr","French"],
    ["fy","Frisian"],
    ["gaa","Ga"],
    ["gl","Galician"],
    ["ka","Georgian"],
    ["de","German"],
    ["el","Greek"],
    ["gn","Guarani"],
    ["gu","Gujarati"],
    ["xx-hacker","Hacker"],
    ["ht","Haitian Creole"],
    ["ha","Hausa"],
    ["haw","Hawaiian"],
    ["iw","Hebrew"],
    ["hi","Hindi"],
    ["hu","Hungarian"],
    ["is","Icelandic"],
    ["ig","Igbo"],
    ["id","Indonesian"],
    ["ia","Interlingua"],
    ["ga","Irish"],
    ["it","Italian"],
    ["ja","Japanese"],
    ["jw","Javanese"],
    ["kn","Kannada"],
    ["kk","Kazakh"],
    ["rw","Kinyarwanda"],
    ["rn","Kirundi"],
    ["xx-klingon","Klingon"],
    ["kg","Kongo"],
    ["ko","Korean"],
    ["kri","Krio (Sierra Leone)"],
    ["ku","Kurdish"],
    ["ckb","Kurdish (Soranî)"],
    ["ky","Kyrgyz"],
    ["lo","Laothian"],
    ["la","Latin"],
    ["lv","Latvian"],
    ["ln","Lingala"],
    ["lt","Lithuanian"],
    ["loz","Lozi"],
    ["lg","Luganda"],
    ["ach","Luo"],
    ["mk","Macedonian"],
    ["mg","Malagasy"],
    ["ms","Malay"],
    ["ml","Malayalam"],
    ["mt","Maltese"],
    ["mi","Maori"],
    ["mr","Marathi"],
    ["mfe","Mauritian Creole"],
    ["mo","Moldavian"],
    ["mn","Mongolian"],
    ["sr-ME","Montenegrin"],
    ["ne","Nepali"],
    ["pcm","Nigerian Pidgin"],
    ["nso","Northern Sotho"],
    ["no","Norwegian"],
    ["nn","Norwegian (Nynorsk)"],
    ["oc","Occitan"],
    ["or","Oriya"],
    ["om","Oromo"],
    ["ps","Pashto"],
    ["fa","Persian"],
    ["xx-pirate","Pirate"],
    ["pl","Polish"],
    ["pt-BR","Portuguese (Brazil)"],
    ["pt-PT","Portuguese (Portugal)"],
    ["pa","Punjabi"],
    ["qu","Quechua"],
    ["ro","Romanian"],
    ["rm","Romansh"],
    ["nyn","Runyakitara"],
    ["ru","Russian"],
    ["gd","Scots Gaelic"],
    ["sr","Serbian"],
    ["sh","Serbo-Croatian"],
    ["st","Sesotho"],
    ["tn","Setswana"],
    ["crs","Seychellois Creole"],
    ["sn","Shona"],
    ["sd","Sindhi"],
    ["si","Sinhalese"],
    ["sk","Slovak"],
    ["sl","Slovenian"],
    ["so","Somali"],
    ["es","Spanish"],
    ["es-419","Spanish (Latin American)"],
    ["su","Sundanese"],
    ["sw","Swahili"],
    ["sv","Swedish"],
    ["tg","Tajik"],
    ["ta","Tamil"],
    ["tt","Tatar"],
    ["te","Telugu"],
    ["th","Thai"],
    ["ti","Tigrinya"],
    ["to","Tonga"],
    ["lua","Tshiluba"],
    ["tum","Tumbuka"],
    ["tr","Turkish"],
    ["tk","Turkmen"],
    ["tw","Twi"],
    ["ug","Uighur"],
    ["uk","Ukrainian"],
    ["ur","Urdu"],
    ["uz","Uzbek"],
    ["vi","Vietnamese"],
    ["cy","Welsh"],
    ["wo","Wolof"],
    ["xh","Xhosa"],
    ["yi","Yiddish"],
    ["yo","Yoruba"],
    ["zu","Zulu"],
]
prompt_template = "You are a translation engine that can only translate text and cannot interpret it. Keep the indent of the original text, only modify when you need."

def submit_message(detectFrom, detectTo, user_token, prompt):
    if user_token != "":
        openai.api_key = user_token

    if not prompt:
        return gr.update(value="")
    
    for lc, lang in supportLanguages:
        if detectFrom == lang:
            detectFrom = lc
        if detectTo == lang:
            detectTo = lc

    systemInstruct = prompt_template
    translateInstruct = f"translate from {detectFrom} to {detectTo}"
    if detectFrom == "auto":
        translateInstruct = f"translate to {detectTo}"
    if detectFrom in ["古文", "zh-CN", "zh-TW"]:
        if detectTo == "zh-TW":
            translateInstruct = "翻译成繁体白话文"
        if detectTo == "zh-CN":
            translateInstruct = "翻译成简体白话文"
        if detectTo == "粤语":
            translateInstruct = "翻译成粤语白话文"

    if detectFrom == detectTo:
        systemInstruct = "You are a text embellisher, you can only embellish the text, don't interpret it."
        if detectTo in ["zh-CN", "zh-TW"]:
            translateInstruct = "润色此句"
        else:
            translateInstruct = "polish this sentence"

    prompt_msg = [
        {"role": "system", "content": systemInstruct},
        {"role": "user", "content": translateInstruct},
        {"role": "user", "content": prompt},
    ]

    try:
        openai_response = openai.ChatCompletion.create(
            model="gpt-3.5-turbo",
            messages=prompt_msg,
            temperature=0,
            max_tokens=1000,
            top_p=1,
            stream=True,
            frequency_penalty=1,
            presence_penalty=1,
        )

        combined = ""
        for resp in openai_response:
            delta = resp["choices"][0]["delta"]
            if "content" in delta:
                combined += delta["content"]
            yield combined

    except Exception as e:
        return f"Error: {e}"

css = """
      #col-container {max-width: 80%; margin-left: auto; margin-right: auto;}
      #chatbox {min-height: 400px;}
      #header {text-align: center;}
      #label {font-size: 0.8em; padding: 0.5em; margin: 0;}
      .message { font-size: 1.2em; }
      """

with gr.Blocks(css=css) as demo:
    
    state = gr.State([])

    with gr.Column(elem_id="col-container"):
        gr.Markdown("""## OpenAI Translator
                    Using the official API (gpt-3.5-turbo model).""", elem_id="header")

        with gr.Row():
            with gr.Column():
                translateFrom = gr.Dropdown(label="Translate From", elem_id="translate-from", multiselect=False, value="auto", choices=[l[1] for l in supportLanguages]).style(container=False)
                input_message = gr.Textbox(max_lines=100, show_label=False, lines=10, placeholder="Enter text and press enter", visible=True).style(container=False)
            with gr.Column():
                translateTo = gr.Dropdown(label="Translate To", elem_id="translate-to", multiselect=False, value="Chinese (Simplified)", choices=[l[1] for l in supportLanguages[1:]]).style(container=False)
                output = gr.Textbox(max_lines=100, show_label=False, lines=10, label="Output", visible=True).style(container=False)
            
        btn_submit = gr.Button("Translate")

        with gr.Row():
            user_token = gr.Textbox(value='', placeholder="OpenAI API Key", type="password", label="Enter your OpenAI API Key. Leave blank to use default key.")

    btn_submit.click(submit_message, [translateFrom, translateTo, user_token, input_message], [output])

demo.queue(concurrency_count=10)
demo.launch(height='800px')