app.py

import gradio as gr

def convert_text(text):
    upper_text = text.upper()
    lower_text = text.lower()

    # Proper sentence case (after every dot)
    sentences = text.split(".")
    sentence_text = ". ".join(
        s.strip().capitalize() for s in sentences if s.strip()
    )

    return upper_text, lower_text, sentence_text


with gr.Blocks(title="Text Case Converter") as demo:
    gr.Markdown(
        """
        # 🔤 Text Case Converter  
        Converts text into **UPPERCASE**, **lowercase**, and **Sentence case**.
        """
    )

    input_text = gr.Textbox(label="Enter Text", lines=4)
    convert_btn = gr.Button("Convert")

    upper_output = gr.Textbox(label="UPPERCASE Output")
    lower_output = gr.Textbox(label="lowercase Output")
    sentence_output = gr.Textbox(label="Sentence case Output")

    convert_btn.click(
        fn=convert_text,
        inputs=input_text,
        outputs=[upper_output, lower_output, sentence_output]
    )

demo.launch()