app.py

import gradio as gr
import json
import requests

import flux

def greet(name: str) -> str:
    """
    Greets the user with a personalized hello message.
    Args:
        name (str): The name of the user to greet.
    Returns:
        str: A greeting message addressed to the specified user.
    """
    if not name:
        return "Hello stranger!!"
    name = name.strip()
    if len(name) > 50:
        return "Name is too long!"
    return "Hello " + name + "!!"

def get_dad_joke():
    """
    Fetches a random dad joke from the icanhazdadjoke.com API.

    The function makes an HTTP GET request to the <https://icanhazdadjoke.com/> API
    with appropriate headers to receive JSON response.

    Args:
        None
    Returns:
        str: A random dad joke if successful, otherwise returns an error message.
            - Success: Returns the joke text
            - Failure: Returns "Failed to retrieve a joke." if the API request fails
            - No joke: Returns "No joke found." if the API response doesn't contain a joke

    Requires:
        requests: The requests library must be imported to make HTTP requests
    """

    headers = {"Accept": "application/json"}
    response = requests.get("https://icanhazdadjoke.com/", headers=headers)
    if response.status_code == 200:
        data = response.json()
        return data.get("joke", "No joke found.")
    else:
        return "Failed to retrieve a joke."

def calculate(n1, op, n2):
    """
    Performs basic arithmetic operations between two numbers.
    This function takes two numbers and an operator as input and returns the result
    of the arithmetic operation. Supported operations are addition (+), subtraction (-),
    multiplication (*), and division (/). For division, checks for division by zero.
    Args:
        n1 (float): First number
        op (str): Operator ('+', '-', '*', or '/')
        n2 (float): Second number
    Returns:
        float: Result of the arithmetic operation if valid
        str: "Error" if invalid operation (like division by zero)
    Examples:
        >>> calculate(10, "+", 5)
        15
        >>> calculate(10, "/", 0)
        "Error"
    """

    if op == "+": return str(n1 + n2)
    if op == "-": return str(n1 - n2)
    if op == "*": return str(n1 * n2)
    if op == "/" and n2 != 0: return str(n1 / n2)
    return "Error"


BASE_GOOGLE_BOOKS_VOLUMES_API = "https://www.googleapis.com/books/v1/volumes"

def get_google_book_filtered(title="", author="", genre="", isbn=""):
    """
    Get a filtered list of books from Google Books API.
    It can be filtered by title, author, genre, and ISBN.
    Results are ordered by relevance to the query.
    Only a subset of the volume info is included.
    Only 10 results are returned.
    Args:
        title: str - title of the book
        author: str - author of the book
        genre: str - genre of the book
        isbn: str - ISBN of the book
    Returns:
        list - list of books
    """
    query = "q="
    if title:
        query += f"intitle:{title}"
    if author:
        query += f"+inauthor:{author}"
    if genre:
        query += f"+subject:{genre}"
    if isbn:
        query += f"+isbn:{isbn}"

    if query != "q=":
        url = f"{BASE_GOOGLE_BOOKS_VOLUMES_API}?{query}"
        url += "&orderBy=relevance"
        url += "&maxResults=10"
        url += "&projection=lite"  # only include a subset of the volume info

        json_res = requests.get(url).json()
        return json.dumps(json_res, indent=2)

def get_google_books_book_by_id(book_id):
    """
    Get a book from Google Books API by its ID.
    Args:
        book_id: str - ID of the book
    Returns:
        dict - book
    """
    url = f"{BASE_GOOGLE_BOOKS_VOLUMES_API}/{book_id}?projection=full"

    json_res = requests.get(url).json()
    return json.dumps(json_res, indent=2)

print(f"DEBUG: Gradio version={gr. __version__}")

with gr.Blocks() as demo:
    gr.Markdown(
        """## 🧮Calculator and other useful tools

                ### Built from the ground up for LLMs

                This app provides a simple calculator, a dad joke generator, a greeting function, an image generation feature and a Google Books API integration.

                Read the [project documentation](https://huggingface.co/spaces/Agents-MCP-Hackathon/simple-calculator/blob/main/README.md) to understand its background and motivations.

                Use via API or MCP 🚀 · [Powered by Modal](https://modal.com/) · [Built with Gradio](https://www.gradio.app/) 🟧
                """
    )
    
    tab_calc = gr.Tab("Calculator")
    with tab_calc:
        with gr.Row():
            num1 = gr.Number(label="First Number")
            operation = gr.Dropdown(
                choices=["+", "-", "*", "/"],
                label="Operation"
            )
            num2 = gr.Number(label="Second Number")
        
        calc_btn = gr.Button("Calculate")
        calc_output = gr.Text(label="Result")
        calc_btn.click(
            fn=calculate,
            inputs=[num1, operation, num2],
            outputs=calc_output,
            api_name="calculate")
    
    tab_joke = gr.Tab("Dad Joke")
    with tab_joke:
        joke_btn = gr.Button("Get Dad Joke")
        joke_output = gr.Textbox(label="Dad Joke")
        joke_btn.click(fn=get_dad_joke, outputs=joke_output, api_name="get_dad_joke")

    tab_greet = gr.Tab("Greet")
    with tab_greet:
        name = gr.Textbox(label="Type your name", placeholder="Enter your name here")
        greet_btn = gr.Button("Greet")
        output = gr.Textbox(label="Message")
        greet_btn.click(fn=greet, inputs=name, outputs=output, api_name="greet")

    # Generate an image
    tab_image = gr.Tab("Image Generation")
    with tab_image:
        img_prompt = gr.Textbox(
            label="Image Prompt",
            placeholder="Enter a prompt for the image generation",
            value="A portrait of a handsome software developer"
        )
        img_btn = gr.Button("Generate Image")
        img_output = gr.Image(label="Sample Image")
        img_btn.click(
            fn=flux.generate_image2, # Choose 1 or 2
            inputs=img_prompt,
            outputs=img_output,
            api_name="generate_image")

    tab_GB_search = gr.Tab("Google Books - Search")
    with tab_GB_search:
        with gr.Row():
            title_textbox = gr.Textbox(
                label="Title",
                placeholder="Filter by title",
            )
            author_textbox = gr.Textbox(
                label="Author",
                placeholder="Filter by author",
            )
        with gr.Row():
            genre_textbox = gr.Textbox(
                label="Genre",
                placeholder="Filter by genre",
            )
            isbn_textbox = gr.Textbox(
                label="ISBN",
                placeholder="Filter by ISBN",
            )
        with gr.Row():
            search_btn = gr.Button("Search Books")
        with gr.Row():
            output_books_box = gr.Textbox(label="Results")
        search_btn.click(
            fn=get_google_book_filtered,
            inputs=[title_textbox, author_textbox, genre_textbox, isbn_textbox],
            outputs=output_books_box,
            api_name="google_books_search",
        )

    tab_GB_get_by_id = gr.Tab("Google Books - Get Book By ID")
    with tab_GB_get_by_id:
        with gr.Row():
            id_textbox = gr.Textbox(
                label="ID",
                placeholder="Book ID",
            )
            search_btn = gr.Button("Get Book")
        with gr.Row():
            output_book_box = gr.Textbox(label="Results")
        search_btn.click(
            fn=get_google_books_book_by_id,
            inputs=[id_textbox],
            outputs=output_book_box,
            api_name="google_books_get_by_id",
        )

demo.launch(
    mcp_server=True,
    share=True,
    ssr_mode=False,
    server_name="0.0.0.0",  # Listen on all interfaces
    server_port=7860)  # Use the port we exposed in Dockerfile

# EOF