app.py

import os
import openai
import gradio as gr
from langchain import OpenAI
from langchain.prompts import PromptTemplate
from langchain.chains import LLMChain
import datetime

NUM_WORDS_DEFAULT = 0
FORMALITY_DEFAULT = "Casual"
TEMPERATURE_DEFAULT = 0.5
EMOTION_DEFAULT = "N/A"
TRANSLATE_TO_DEFAULT = "Don't translate"
LITERARY_STYLE_DEFAULT = "Prose"
CHARACTER_DEFAULT = "The Old Lady Who Swallowed A Fly"
PROMPT_TEMPLATE = PromptTemplate(
    input_variables=["original_words", "num_words", "formality", "emotions", "translate_to", "literary_style", "character"],
    template="Express {num_words} in a {formality} manner, "
             "{emotions}{translate_to}{literary_style}{character} the following: \n{original_words}\n",
)


def set_openai_api_key(api_key, openai_api_key, temperature, llm_chain):
    if api_key:
        print("temperature: ", temperature)
        openai_api_key = api_key

        os.environ["OPENAI_API_KEY"] = api_key
        llm = OpenAI(model_name='text-davinci-003', temperature=temperature, max_tokens=512)
        os.environ["OPENAI_API_KEY"] = ""

        llm_chain = LLMChain(llm=llm, prompt=PROMPT_TEMPLATE, verbose=True)
        return openai_api_key, llm_chain


def transform_text(desc, openai_api_key, temperature, llm_chain, num_words, formality,
                   anticipation_level, joy_level, trust_level,
                   fear_level, surprise_level, sadness_level, disgust_level, anger_level,
                       translate_to, literary_style, character):
    if not openai_api_key or openai_api_key == "":
        return "<pre>Please paste your OpenAI API key (see https://beta.openai.com)</pre>"

    num_words_prompt = ""
    if num_words and int(num_words) != 0:
        num_words_prompt = "using up to " + str(num_words) + " words, "

    # Change some arguments to lower case
    formality = formality.lower()
    anticipation_level = anticipation_level.lower()
    joy_level = joy_level.lower()
    trust_level = trust_level.lower()
    fear_level = fear_level.lower()
    surprise_level = surprise_level.lower()
    sadness_level = sadness_level.lower()
    disgust_level = disgust_level.lower()
    anger_level = anger_level.lower()

    llm_chain.llm.temperature = temperature

    # put all emotions into a list
    emotions = []
    if anticipation_level != "n/a":
        emotions.append(anticipation_level)
    if joy_level != "n/a":
        emotions.append(joy_level)
    if trust_level != "n/a":
        emotions.append(trust_level)
    if fear_level != "n/a":
        emotions.append(fear_level)
    if surprise_level != "n/a":
        emotions.append(surprise_level)
    if sadness_level != "n/a":
        emotions.append(sadness_level)
    if disgust_level != "n/a":
        emotions.append(disgust_level)
    if anger_level != "n/a":
        emotions.append(anger_level)

    emotions_str = ""
    if len(emotions) > 0:
        if len(emotions) == 1:
            emotions_str = "with emotion of " + emotions[0] + ", "
        else:
            emotions_str = "with emotions of " + ", ".join(emotions[:-1]) + " and " + emotions[-1] + ", "

    translate_to_str = ""
    if translate_to != TRANSLATE_TO_DEFAULT:
        translate_to_str = "translated to " + translate_to + ", "

    literary_style_str = ""
    if literary_style != LITERARY_STYLE_DEFAULT:
        if literary_style == "Poetry":
            literary_style_str = "as a poem, "
        elif literary_style == "Haiku":
            literary_style_str = "as a haiku, "
        elif literary_style == "Limerick":
            literary_style_str = "as a limerick, "
        elif literary_style == "Joke":
            literary_style_str = "as a very funny joke with a setup and punchline, "
        elif literary_style == "Knock-knock":
            literary_style_str = "as a very funny knock-knock joke, "

    character_str = ""
    if character != CHARACTER_DEFAULT:
        if character == "The Old Woman Who Lived In A Shoe":
             character_str = "by the Old Woman Who Lived In A Shoe, "
        elif character == "Mary Had A Little Lamb":
             character_str = "by Mary from Mary Had A Little Lamb, "
        elif character == "Humpty-Dumpty":
             character_str = "by Humpty Dumpty, "
    
    formatted_prompt = PROMPT_TEMPLATE.format(
        original_words=desc,
        num_words=num_words_prompt,
        formality=formality,
        emotions=emotions_str,
        translate_to=translate_to_str,
        literary_style=literary_style_str,
        character=character_str,
    )

    generated_text = llm_chain.run({'original_words': desc, 'num_words': num_words_prompt, 'formality': formality,
                                    'emotions': emotions_str, 'translate_to': translate_to_str,
                                    'literary_style': literary_style_str, 'character': character_str}).strip()

    # replace all newlines with <br> in generated_text
    generated_text = generated_text.replace("\n", "<br>")

    prompt_plus_generated = "<b>GPT prompt:</b> " + formatted_prompt + "<br/><br/><code>" + generated_text + "</code>"

    print("\n==== date/time: " + str(datetime.datetime.now() - datetime.timedelta(hours=5)) + " ====")
    print("temperature: ", temperature)
    print("prompt_plus_generated: " + prompt_plus_generated)

    return prompt_plus_generated


def update_foo(widget, state):
    if widget:
        state = widget
        return state


block = gr.Blocks(css=".gradio-container {background-color: lightgray}")

with block:
    openai_api_key_state = gr.State()
    temperature_state = gr.State(TEMPERATURE_DEFAULT)
    llm_chain_state = gr.State()
    num_words_state = gr.State(NUM_WORDS_DEFAULT)
    formality_state = gr.State(FORMALITY_DEFAULT)
    anticipation_level_state = gr.State(EMOTION_DEFAULT)
    joy_level_state = gr.State(EMOTION_DEFAULT)
    trust_level_state = gr.State(EMOTION_DEFAULT)
    fear_level_state = gr.State(EMOTION_DEFAULT)
    surprise_level_state = gr.State(EMOTION_DEFAULT)
    sadness_level_state = gr.State(EMOTION_DEFAULT)
    disgust_level_state = gr.State(EMOTION_DEFAULT)
    anger_level_state = gr.State(EMOTION_DEFAULT)
    translate_to_state = gr.State(TRANSLATE_TO_DEFAULT)
    literary_style_state = gr.State(LITERARY_STYLE_DEFAULT)
    character_state = gr.State(CHARACTER_DEFAULT)

    with gr.Row():
        temperature_slider = gr.Slider(label="GPT Temperature", value=TEMPERATURE_DEFAULT, minimum=0.0, maximum=1.0,
                                       step=0.1)
        title = gr.Markdown ("""<h3><center>GPT-3.5 Express-inator</center></h3>""")
        openai_api_key_textbox = gr.Textbox(placeholder="Paste your OpenAI API key",
                                            show_label=False, lines=1, type='password')

    output = gr.Markdown("")
    with gr.Row():
        request = gr.Textbox(label="Express this: ",
                             value="",
                             placeholder="Ex: The quick brown fox jumped over the lazy dog.")

        submit = gr.Button(value="Express", variant="secondary").style(full_width=False)

    with gr.Row():
        with gr.Column():
            num_words_slider = gr.Slider(label="Max number of words to generate (0 for don't care)",
                                         value=NUM_WORDS_DEFAULT, minimum=0, maximum=100, step=10)
            num_words_slider.change(update_foo,
                                    inputs=[num_words_slider, num_words_state],
                                    outputs=[num_words_state])

            formality_radio = gr.Radio(label="Formality:", choices=["Casual", "Polite", "Honorific"],
                                       value=FORMALITY_DEFAULT)
            formality_radio.change(update_foo,
                                   inputs=[formality_radio, formality_state],
                                   outputs=[formality_state])

            character_radio = gr.Radio(label="From the perspective of:", choices=["The Old Lady Who Swallowed A Fly", "The Old Woman Who Lived In A Shoe", "Mary Had A Little Lamb", "Humpty-Dumpty"],
                                       value=CHARACTER_DEFAULT)
            formality_radio.change(update_foo,
                                   inputs=[character_radio, character_state],
                                   outputs=[character_state])

            translate_to_radio = gr.Radio(label="Translate to:", choices=[
                TRANSLATE_TO_DEFAULT, "Arabic", "British English", "Chinese (Simplified)", "Chinese (Traditional)",
                "Czech", "Danish", "Dutch", "emojis", "English", "Finnish", "French", "Gen Z slang", "German", "Greek",
                "Hebrew", "Hindi", "Hungarian", "Indonesian", "Italian", "Japanese",
                "how the stereotypical Karen would say it",
                "Klingon", "Korean", "Norwegian", "Old English", "Pirate", "Polish", "Portuguese", "Romanian",
                "Russian", "Spanish", "Strange Planet expospeak technical talk", "Swedish", "Thai", "Turkish", "Vietnamese", "Yoda"], value=TRANSLATE_TO_DEFAULT)

            translate_to_radio.change(update_foo,
                                      inputs=[translate_to_radio, translate_to_state],
                                      outputs=[translate_to_state])

            literary_style_radio = gr.Radio(label="Literary style:", choices=[
                LITERARY_STYLE_DEFAULT, "Poetry", "Haiku", "Limerick", "Joke", "Knock-knock"],
                                            value=LITERARY_STYLE_DEFAULT)

            literary_style_radio.change(update_foo,
                                        inputs=[literary_style_radio, literary_style_state],
                                        outputs=[literary_style_state])

            gr.Examples(
                examples=[
                    "The quick brown fox jumped over the lazy dog",
                    "I want some ice cream",
                    "Platypuses are weird",
                ],
                inputs=request
            )

        with gr.Column():
            with gr.Accordion("Emotions", open=True):
                anticipation_level_radio = gr.Radio(label="Anticipation level:",
                                                    choices=[EMOTION_DEFAULT, "Interest", "Anticipation", "Vigilance"],
                                                    value=EMOTION_DEFAULT)
                anticipation_level_radio.change(update_foo,
                                                inputs=[anticipation_level_radio, anticipation_level_state],
                                                outputs=[anticipation_level_state])

                joy_level_radio = gr.Radio(label="Joy level:",
                                           choices=[EMOTION_DEFAULT, "Serenity", "Joy", "Ecstasy"],
                                           value=EMOTION_DEFAULT)
                joy_level_radio.change(update_foo,
                                       inputs=[joy_level_radio, joy_level_state],
                                       outputs=[joy_level_state])

                trust_level_radio = gr.Radio(label="Trust level:",
                                             choices=[EMOTION_DEFAULT, "Acceptance", "Trust", "Admiration"],
                                             value=EMOTION_DEFAULT)
                trust_level_radio.change(update_foo,
                                         inputs=[trust_level_radio, trust_level_state],
                                         outputs=[trust_level_state])

                fear_level_radio = gr.Radio(label="Fear level:",
                                            choices=[EMOTION_DEFAULT, "Apprehension", "Fear", "Terror"],
                                            value=EMOTION_DEFAULT)
                fear_level_radio.change(update_foo,
                                        inputs=[fear_level_radio, fear_level_state],
                                        outputs=[fear_level_state])

                surprise_level_radio = gr.Radio(label="Surprise level:",
                                                choices=[EMOTION_DEFAULT, "Distraction", "Surprise", "Amazement"],
                                                value=EMOTION_DEFAULT)
                surprise_level_radio.change(update_foo,
                                            inputs=[surprise_level_radio, surprise_level_state],
                                            outputs=[surprise_level_state])

                sadness_level_radio = gr.Radio(label="Sadness level:",
                                               choices=[EMOTION_DEFAULT, "Pensiveness", "Sadness", "Grief"],
                                               value=EMOTION_DEFAULT)
                sadness_level_radio.change(update_foo,
                                           inputs=[sadness_level_radio, sadness_level_state],
                                           outputs=[sadness_level_state])

                disgust_level_radio = gr.Radio(label="Disgust level:",
                                               choices=[EMOTION_DEFAULT, "Boredom", "Disgust", "Loathing"],
                                               value=EMOTION_DEFAULT)
                disgust_level_radio.change(update_foo,
                                           inputs=[disgust_level_radio, disgust_level_state],
                                           outputs=[disgust_level_state])

                anger_level_radio = gr.Radio(label="Anger level:",
                                             choices=[EMOTION_DEFAULT, "Annoyance", "Anger", "Rage"],
                                             value=EMOTION_DEFAULT)
                anger_level_radio.change(update_foo,
                                         inputs=[anger_level_radio, anger_level_state],
                                         outputs=[anger_level_state])

    gr.HTML("""
    <center>This app by <a target='_blank' href='https://twitter.com/JavaFXpert'>@JavaFXpert</a> leverages GPT-3.5 for text completion to facilitate expressing yourself. 
    The author is not responsible for the content of the generated text.</center>""")

    gr.HTML("<center>Powered by <a href='https://github.com/hwchase17/langchain'>LangChain 🦜️🔗</a></center>")

    submit.click(transform_text,
                 inputs=[
                     request, openai_api_key_state, temperature_state, llm_chain_state, num_words_state,
                     formality_state,
                     anticipation_level_state, joy_level_state, trust_level_state, fear_level_state,
                     surprise_level_state, sadness_level_state, disgust_level_state, anger_level_state,
                     translate_to_state, literary_style_state, character_state],
                 outputs=[output])

    request.submit(transform_text,
                   inputs=[
                       request, openai_api_key_state, temperature_state, llm_chain_state, num_words_state,
                       formality_state,
                       anticipation_level_state, joy_level_state, trust_level_state, fear_level_state,
                       surprise_level_state, sadness_level_state, disgust_level_state, anger_level_state,
                       translate_to_state, literary_style_state, character_state],
                   outputs=[output])

    openai_api_key_textbox.change(set_openai_api_key,
                                  inputs=[openai_api_key_textbox, openai_api_key_state, temperature_state,
                                          llm_chain_state],
                                  outputs=[openai_api_key_state, llm_chain_state])

    temperature_slider.change(update_foo,
                              inputs=[temperature_slider, temperature_state],
                              outputs=[temperature_state])

block.launch()