app.py

import os
import time
import uuid
from typing import List, Tuple, Optional, Dict, Union


import google.generativeai as genai
import gradio as gr
from PIL import Image

print("google-generativeai:", genai.__version__)

GOOGLE_API_KEY = os.environ.get("GOOGLE_API_KEY")

TITLE = """<h1 align="center">Gemini Movie Editor Assitant Agent</h1>"""
SUBTITLE = """<h2 align="center">Movie Editing Agent built with Gemini Pro and Gemini Pro Vision API</h2>"""
GETKEY = """
<div style="text-align: center; display: flex; justify-content: center; align-items: center;">
    <span>Get an API key
        <a href="https://makersuite.google.com/app/apikey">GOOGLE API KEY</a>.
    </span>
</div>
"""

movie_script = """
Orion, in his futuristic apartment, discovers a cryptic message about an ancient artifact. 
Compelled by curiosity, he embarks on a quest, joined by his skilled friend, Luna. 
They navigate through uncharted territories and ancient ruins, solving puzzles and overcoming traps. 
Together, they uncover a hidden chamber and retrieve the powerful artifact, 
but not without triggering an alarm. In a tense escape, Luna is injured, and Orion uses the artifact to save her.
They return to the city, changed by their journey, with Orion resolved to use the artifact for the greater good,
as they stand looking towards a new future.
"""


AVATAR_IMAGES = (
    None,
    "https://media.roboflow.com/spaces/gemini-icon.png"
)


IMAGE_CACHE_DIRECTORY = "/tmp"
IMAGE_WIDTH = 512
CHAT_HISTORY = List[Tuple[Optional[Union[Tuple[str], str]], Optional[str]]]


def preprocess_stop_sequences(stop_sequences: str) -> Optional[List[str]]:
    if not stop_sequences:
        return None
    return [sequence.strip() for sequence in stop_sequences.split(",")]


def preprocess_image(image: Image.Image) -> Optional[Image.Image]:
    image_height = int(image.height * IMAGE_WIDTH / image.width)
    return image.resize((IMAGE_WIDTH, image_height))


def cache_pil_image(image: Image.Image) -> str:
    image_filename = f"{uuid.uuid4()}.jpeg"
    os.makedirs(IMAGE_CACHE_DIRECTORY, exist_ok=True)
    image_path = os.path.join(IMAGE_CACHE_DIRECTORY, image_filename)
    image.save(image_path, "JPEG")
    return image_path


def preprocess_chat_history(
    history: CHAT_HISTORY
) -> List[Dict[str, Union[str, List[str]]]]:
    messages = []
    for user_message, model_message in history:
        if isinstance(user_message, tuple):
            pass
        elif user_message is not None:
            messages.append({'role': 'user', 'parts': [user_message]})
        if model_message is not None:
            messages.append({'role': 'model', 'parts': [model_message]})
    return messages


def upload(files: Optional[List[str]], chatbot: CHAT_HISTORY) -> CHAT_HISTORY:
    for file in files:
        image = Image.open(file).convert('RGB')
        image = preprocess_image(image)
        image_path = cache_pil_image(image)
        chatbot.append(((image_path,), None))
    return chatbot


def user(text_prompt: str, chatbot: CHAT_HISTORY):
    if text_prompt:
        chatbot.append((text_prompt, None))
    return "", chatbot


def bot(
    google_key: str,
    files: Optional[List[str]],
    temperature: float,
    max_output_tokens: int,
    stop_sequences: str,
    top_k: int,
    top_p: float,
    chatbot: CHAT_HISTORY
):
    if len(chatbot) == 0:
        return chatbot

    google_key = google_key if google_key else GOOGLE_API_KEY
    if not google_key:
        raise ValueError(
            "GOOGLE_API_KEY is not set. "
            "Please follow the instructions in the README to set it up.")

    genai.configure(api_key=google_key)
    generation_config = genai.types.GenerationConfig(
        temperature=temperature,
        max_output_tokens=max_output_tokens,
        stop_sequences=preprocess_stop_sequences(stop_sequences=stop_sequences),
        top_k=top_k,
        top_p=top_p)

    if files:
        text_prompt = [chatbot[-1][0]] \
            if chatbot[-1][0] and isinstance(chatbot[-1][0], str) \
            else []
        image_prompt = [Image.open(file).convert('RGB') for file in files]
        model = genai.GenerativeModel('gemini-pro-vision')
        response = model.generate_content(
            text_prompt + image_prompt,
            stream=True,
            generation_config=generation_config)
    else:
        messages = preprocess_chat_history(chatbot)
        model = genai.GenerativeModel('gemini-pro')
        response = model.generate_content(
            messages,
            stream=True,
            generation_config=generation_config)

    # streaming effect
    chatbot[-1][1] = ""
    for chunk in response:
        for i in range(0, len(chunk.text), 10):
            section = chunk.text[i:i + 10]
            chatbot[-1][1] += section
            time.sleep(0.01)
            yield chatbot


google_key_component = gr.Textbox(
    label="GOOGLE API KEY",
    value="",
    type="password",
    placeholder="...",
    info="You have to provide your own GOOGLE_API_KEY for this app to function properly",
    visible=GOOGLE_API_KEY is None
)
chatbot_component = gr.Chatbot(
    label='Gemini',
    bubble_full_width=False,
    avatar_images=AVATAR_IMAGES,
    scale=2,
    height=400
)
text_prompt_component = gr.Textbox(
    placeholder="Hi there! [press Enter]", show_label=False, autofocus=True, scale=8
)
upload_button_component = gr.UploadButton(
    label="Upload Images", file_count="multiple", file_types=["image"], scale=1
)
run_button_component = gr.Button(value="Run", variant="primary", scale=1)
temperature_component = gr.Slider(
    minimum=0,
    maximum=1.0,
    value=0.4,
    step=0.05,
    label="Temperature",
    info=(
        "Temperature controls the degree of randomness in token selection. Lower "
        "temperatures are good for prompts that expect a true or correct response, "
        "while higher temperatures can lead to more diverse or unexpected results. "
    ))
max_output_tokens_component = gr.Slider(
    minimum=1,
    maximum=2048,
    value=1024,
    step=1,
    label="Token limit",
    info=(
        "Token limit determines the maximum amount of text output from one prompt. A "
        "token is approximately four characters. The default value is 2048."
    ))
stop_sequences_component = gr.Textbox(
    label="Add stop sequence",
    value="",
    type="text",
    placeholder="STOP, END",
    info=(
        "A stop sequence is a series of characters (including spaces) that stops "
        "response generation if the model encounters it. The sequence is not included "
        "as part of the response. You can add up to five stop sequences."
    ))
top_k_component = gr.Slider(
    minimum=1,
    maximum=40,
    value=32,
    step=1,
    label="Top-K",
    info=(
        "Top-k changes how the model selects tokens for output. A top-k of 1 means the "
        "selected token is the most probable among all tokens in the model’s "
        "vocabulary (also called greedy decoding), while a top-k of 3 means that the "
        "next token is selected from among the 3 most probable tokens (using "
        "temperature)."
    ))
top_p_component = gr.Slider(
    minimum=0,
    maximum=1,
    value=1,
    step=0.01,
    label="Top-P",
    info=(
        "Top-p changes how the model selects tokens for output. Tokens are selected "
        "from most probable to least until the sum of their probabilities equals the "
        "top-p value. For example, if tokens A, B, and C have a probability of .3, .2, "
        "and .1 and the top-p value is .5, then the model will select either A or B as "
        "the next token (using temperature). "
    ))

user_inputs = [
    text_prompt_component,
    chatbot_component
]

bot_inputs = [
    google_key_component,
    upload_button_component,
    temperature_component,
    max_output_tokens_component,
    stop_sequences_component,
    top_k_component,
    top_p_component,
    chatbot_component
]


with gr.Blocks() as demo:
    with gr.Tab("Step 1: Movie Script Writer"):
        gr.HTML(TITLE)
        gr.Image(value="resources/step1image.png")
    with gr.Tab("Step 2: llamaIndex Index Analyser"):
        gr.HTML(TITLE)
        
    with gr.Tab("Setp 3: Gemini Frame Arrranger"):    
        gr.HTML(TITLE)
        gr.HTML(SUBTITLE)
        gr.HTML(GETKEY)
        with gr.Column():
            google_key_component.render()
            chatbot_component.render()
            with gr.Row():
                text_prompt_component.render()
                upload_button_component.render()
                run_button_component.render()
            with gr.Accordion("Parameters", open=False):
                temperature_component.render()
                max_output_tokens_component.render()
                stop_sequences_component.render()
                with gr.Accordion("Advanced", open=False):
                    top_k_component.render()
                    top_p_component.render()
    
        run_button_component.click(
            fn=user,
            inputs=user_inputs,
            outputs=[text_prompt_component, chatbot_component],
            queue=False
        ).then(
            fn=bot, inputs=bot_inputs, outputs=[chatbot_component],
        )
    
        text_prompt_component.submit(
            fn=user,
            inputs=user_inputs,
            outputs=[text_prompt_component, chatbot_component],
            queue=False
        ).then(
            fn=bot, inputs=bot_inputs, outputs=[chatbot_component],
        )
    
        upload_button_component.upload(
            fn=upload,
            inputs=[upload_button_component, chatbot_component],
            outputs=[chatbot_component],
            queue=False
        )

    with gr.Tab("Step 4: Movie Maker"):
        gr.HTML(TITLE)

    with gr.Tab("Step 5: Final Product"):
        gr.Video(value="resources/GPTMovie2.mp4")

    with gr.Tab("Step 6: TruEra RAG Tutor"):
        gr.Video(value="resources/GPTMovie2.mp4")

        
demo.queue(max_size=99).launch(debug=False, show_error=True)