app.py

import os

os.environ["HUGGINGFACE_DEMO"] = "1"  # set before import from app

from dotenv import load_dotenv

load_dotenv()
################################################################################################

import gradio as gr
import uuid
import shutil

from app.config import get_settings
from app.schemas.requests import Attribute
from app.request_handler import handle_extract
from app.services.factory import AIServiceFactory


settings = get_settings()
IMAGE_MAX_SIZE = 1536


async def forward_request(
    attributes, product_taxonomy, product_data, ai_model, pil_images
):
    # prepare temp folder
    request_id = str(uuid.uuid4())
    request_temp_folder = os.path.join("gradio_temp", request_id)
    os.makedirs(request_temp_folder, exist_ok=True)

    try:
        # convert attributes to schema
        attributes = import_for_schema + attributes
        try:
            exec(attributes, globals())
        except:
            raise gr.Error(
                "Invalid `Attribute Schema`. Please insert valid schema following the example."
            )

        if product_data == "":
            product_data = "{}"
        product_data_code = f"product_data_object = {product_data}"

        try:
            exec(product_data_code, globals())
        except:
            raise gr.Error(
                "Invalid `Product Data`. Please insert valid dictionary or leave it empty."
            )

        if pil_images is None:
            raise gr.Error("Please upload image(s) of the product")
        pil_images = [pil_image[0] for pil_image in pil_images]
        img_paths = []
        for i, pil_image in enumerate(pil_images):
            if max(pil_image.size) > IMAGE_MAX_SIZE:
                ratio = IMAGE_MAX_SIZE / max(pil_image.size)
                pil_image = pil_image.resize(
                    (int(pil_image.width * ratio), int(pil_image.height * ratio))
                )
            img_path = os.path.join(request_temp_folder, f"{i}.jpg")
            if pil_image.mode in ("RGBA", "LA") or (
                pil_image.mode == "P" and "transparency" in pil_image.info
            ):
                pil_image = pil_image.convert("RGBA")
                if pil_image.getchannel("A").getextrema() == (
                    255,
                    255,
                ):  # if fully opaque, save as JPEG
                    pil_image = pil_image.convert("RGB")
                    image_format = "JPEG"
                else:
                    image_format = "PNG"
            else:
                image_format = "JPEG"
            pil_image.save(img_path, image_format, quality=100, subsampling=0)
            img_paths.append(img_path)

        # mapping
        if ai_model in settings.OPENAI_MODELS:
            ai_vendor = "openai"
        elif ai_model in settings.ANTHROPIC_MODELS:
            ai_vendor = "anthropic"
        service = AIServiceFactory.get_service(ai_vendor)

        try:
            json_attributes = await service.extract_attributes_with_validation(
                Product,  # type: ignore
                ai_model,
                None,
                product_taxonomy,
                product_data_object,  # type: ignore
                img_paths=img_paths,
            )
        except:
            raise gr.Error("Failed to extract attributes. Something went wrong.")
    finally:
        # remove temp folder anyway
        shutil.rmtree(request_temp_folder)

    gr.Info("Process completed!")
    return json_attributes


def add_attribute_schema(attributes, attr_name, attr_desc, attr_type, allowed_values):
    schema = f"""
"{attr_name}": {{
    "description": "{attr_desc}",
    "data_type": "{attr_type}",
    "allowed_values": [
        {', '.join([f'"{v.strip()}"' for v in allowed_values.split(',')]) if allowed_values != "" else ""}
    ]
}},
"""
    return attributes + schema, "", "", "", ""

import_for_schema = """
from enum import Enum
from pydantic import BaseModel, Field
from typing import List
"""

sample_schema = """from pydantic import BaseModel, Field


class Length(BaseModel):
    maxi: int = Field(..., description="Maxi: Dress extends to the ankles or floor.")
    knee_length: int = Field(..., description="Knee Length: Dress ends around the knees.")
    mini: int = Field(..., description="Mini: Short dress that ends well above the knees.")
    midi: int = Field(..., description="Midi: Dress falls between the knee and ankle.")


class Style(BaseModel):
    a_line: int = Field(..., description="A Line: Fitted at the top and gradually flares toward the hem, forming an 'A' shape.")
    bodycon: int = Field(..., description="Bodycon: Tight-fitting and figure-hugging, usually made with stretchy fabric.")
    shirt_dress: int = Field(..., description="Shirt Dress: Structured like a shirt with buttons, collar, and sleeves; may include a belt.")
    wrap_dress: int = Field(..., description="Wrap Dress: Features a front closure that wraps and ties at the side or back.")
    slip: int = Field(..., description="Slip: Lightweight, spaghetti-strap dress with minimal structure, often bias-cut.")
    smock: int = Field(..., description="Smock: Loose-fitting with gathered or shirred sections, usually on bodice or neckline.")
    corset: int = Field(..., description="Corset: Structured bodice with boning or lacing that shapes the waist.")
    jumper_dress: int = Field(..., description="Jumper Dress: Layered dress style similar to a pinafore, often more casual or thick-strapped.")
    blazer_dress: int = Field(..., description="Blazer Dress: Tailored like a blazer or suit jacket, often double-breasted or lapelled.")
    asymmetric: int = Field(..., description="Asymmetric: Dress with a non-symmetrical hem, neckline, or sleeve design.")
    shift: int = Field(..., description="Shift: Simple, straight dress with no defined waist, typically above the knee.")
    drop_waist: int = Field(..., description="Drop waist: Waistline sits low on the hips, usually with a loose top and flared skirt.")
    empire: int = Field(..., description="Empire: High waistline just below the bust, flowing skirt from there downward.")
    modest: int = Field(..., description="Modest: Covers most of the body, with high neckline, long sleeves, and longer hemline.")


class SleeveLength(BaseModel):
    sleeveless: int = Field(..., description="Sleeveless: No sleeves.")
    three_quarters_sleeve: int = Field(..., description="Three quarters Sleeve: Sleeves that end between the elbow and wrist.")
    long_sleeve: int = Field(..., description="Long Sleeve: Sleeves that extend to the wrist.")
    short_sleeve: int = Field(..., description="Short Sleeve: Sleeves that end above the elbow.")
    strapless: int = Field(..., description="Strapless: No shoulder straps or sleeves.")


class Neckline(BaseModel):
    v_neck: int = Field(..., description="V Neck: Neckline dips down in the shape of a 'V', varying from shallow to deep.")
    sweetheart: int = Field(..., description="Sweetheart: A heart-shaped neckline, often curving over the bust and dipping in the center.")
    round_neck: int = Field(..., description="Round Neck: Circular neckline sitting around the base of the neck.")
    halter_neck: int = Field(..., description="Halter Neck: Straps go around the neck, leaving shoulders and upper back exposed.")
    square_neck: int = Field(..., description="Square Neck: Straight horizontal cut across the chest with vertical sides, forming a square.")
    high_neck: int = Field(..., description="High Neck: Extends up the neck slightly but not folded like a turtle neck.")
    crew_neck: int = Field(..., description="Crew Neck: High, rounded neckline that sits close to the neck.")
    turtle_neck: int = Field(..., description="Turtle Neck: High neckline that folds over and covers the neck completely.")
    off_the_shoulder: int = Field(..., description="Off the Shoulder: Sits below the shoulders, exposing the shoulders and collarbone.")
    one_shoulder: int = Field(..., description="One Shoulder: Covers one shoulder only, leaving the other bare.")
    boat_neck: int = Field(..., description="Boat Neck: Wide, shallow neckline that runs almost horizontally from shoulder to shoulder.")


class Pattern(BaseModel):
    floral: int = Field(..., description="Floral pattern")
    stripe: int = Field(..., description="Stripe pattern")
    leopard_print: int = Field(..., description="Leopard print")
    plain: int = Field(..., description="Plain")
    geometric: int = Field(..., description="Geometric pattern")
    logo: int = Field(..., description="Logo print")
    graphic_print: int = Field(..., description="Graphic print")
    other: int = Field(..., description="Other pattern")


class Fabric(BaseModel):
    cotton: int = Field(..., description="Cotton")
    denim: int = Field(..., description="Denim")
    linen: int = Field(..., description="Linen")
    satin: int = Field(..., description="Satin")
    silk: int = Field(..., description="Silk")
    sequin: int = Field(..., description="Sequin")
    leather: int = Field(..., description="Leather")
    velvet: int = Field(..., description="Velvet")
    knit: int = Field(..., description="Knit")
    lace: int = Field(..., description="Lace")
    suede: int = Field(..., description="Suede")
    sheer: int = Field(..., description="Sheer")
    polyester: int = Field(..., description="Polyester")
    viscose: int = Field(..., description="Viscose")


class Features(BaseModel):
    pockets: int = Field(..., description="Has pockets")
    lined: int = Field(..., description="Lined")
    cut_out: int = Field(..., description="Cut out design")
    backless: int = Field(..., description="Backless")
    none: int = Field(..., description="No special features")


class Closure(BaseModel):
    button: int = Field(..., description="Button closure")
    zip: int = Field(..., description="Zip closure")
    press_stud: int = Field(..., description="Press stud closure")
    clasp: int = Field(..., description="Clasp closure")


class BodyFit(BaseModel):
    petite: int = Field(..., description="Petite fit")
    maternity: int = Field(..., description="Maternity fit")
    regular: int = Field(..., description="Regular fit")
    tall: int = Field(..., description="Tall fit")
    plus_size: int = Field(..., description="Plus size fit")


class Occasion(BaseModel):
    beach: int = Field(..., description="Suitable for beach")
    casual: int = Field(..., description="Casual wear")
    cocktail: int = Field(..., description="Cocktail event")
    day: int = Field(..., description="Day wear")
    evening: int = Field(..., description="Evening wear")
    mother_of_the_bride: int = Field(..., description="Mother of the bride dress")
    party: int = Field(..., description="Party wear")
    prom: int = Field(..., description="Prom dress")
    wedding_guest: int = Field(..., description="Wedding guest dress")
    work: int = Field(..., description="Work attire")
    sportswear: int = Field(..., description="Sportswear")


class Season(BaseModel):
    spring: int = Field(..., description="Spring season")
    summer: int = Field(..., description="Summer season")
    autumn: int = Field(..., description="Autumn season")
    winter: int = Field(..., description="Winter season")


class Product(BaseModel):
    length: Length = Field(..., description="Single value ,Length of the dress")
    style: Style = Field(..., description="Can have multiple values, Style of the dress")
    sleeve_length: SleeveLength = Field(..., description="Single value ,Sleeve length of the dress")
    neckline: Neckline = Field(..., description="Single value ,Neckline of the dress")
    pattern: Pattern = Field(..., description="Can have multiple values, Pattern of the dress")
    fabric: Fabric = Field(..., description="Can have multiple values, Fabric of the dress")
    features: Features = Field(..., description="Can have multiple values, Features of the dress")
    closure: Closure = Field(..., description="Can have multiple values ,Closure of the dress")
    body_fit: BodyFit = Field(..., description="Single value ,Body fit of the dress")
    occasion: Occasion = Field(..., description="Can have multiple values ,Occasion of the dress")
    season: Season = Field(..., description="Single value ,Season of the dress")
"""
description = """
This is a simple demo for Attribution. Follow the steps below:

1. Upload image(s) of a product.
2. Enter the product taxonomy (e.g. 'upper garment', 'lower garment', 'bag'). If only one product is in the image, you can leave this field empty.
3. Select the AI model to use.
4. Enter known attributes (optional).
5. Enter the attribute schema or use the "Add Attributes" section to add attributes.
6. Click "Extract Attributes" to get the extracted attributes.
"""

product_data_placeholder = """Example:
{
    "brand": "Leaf",
    "size": "M",
    "product_name": "Leaf T-shirt",
    "color": "red"
}
"""
product_data_value = """
{
    "data1": "",
    "data2": ""
}
"""

with gr.Blocks(title="Internal Demo for Attribution") as demo:
    with gr.Row():
        with gr.Column(scale=12):
            gr.Markdown(
                """<div style="text-align: center; font-size: 24px;"><strong>Internal Demo for Attribution</strong></div>"""
            )
            gr.Markdown(description)

    with gr.Row():
        with gr.Column(scale=12):
            with gr.Row():
                with gr.Column():
                    gallery = gr.Gallery(
                        label="Upload images of your product here", type="pil"
                    )
                    product_taxnomy = gr.Textbox(
                        label="Product Taxonomy",
                        placeholder="Enter product taxonomy here (e.g. 'upper garment', 'lower garment', 'bag')",
                        lines=1,
                        max_lines=1,
                    )
                    ai_model = gr.Dropdown(
                        label="AI Model",
                        choices=settings.SUPPORTED_MODELS,
                        interactive=True,
                    )
                    product_data = gr.TextArea(
                        label="Product Data (Optional)",
                        placeholder=product_data_placeholder,
                        value=product_data_value.strip(),
                        interactive=True,
                        lines=10,
                        max_lines=10,
                    )

                    # track_count = gr.State(1)
                    # @gr.render(inputs=track_count)
                    # def render_tracks(count):
                    #     ka_names = []
                    #     ka_values = []
                    #     with gr.Column():
                    #         for i in range(count):
                    #             with gr.Column(variant="panel"):
                    #                 with gr.Row():
                    #                     ka_name = gr.Textbox(placeholder="key", key=f"key-{i}", show_label=False)
                    #                     ka_value = gr.Textbox(placeholder="data", key=f"data-{i}", show_label=False)
                    #                     ka_names.append(ka_name)
                    #                     ka_values.append(ka_value)

                    # add_track_btn = gr.Button("Add Product Data")
                    # remove_track_btn = gr.Button("Remove Product Data")
                    # add_track_btn.click(lambda count: count + 1, track_count, track_count)
                    # remove_track_btn.click(lambda count: count - 1, track_count, track_count)

                with gr.Column():
                    attributes = gr.TextArea(
                        label="Attribute Schema",
                        value=sample_schema,
                        placeholder="Enter schema here or use Add Attributes below",
                        interactive=True,
                        lines=30,
                        max_lines=30,
                    )

                    # with gr.Accordion("Add Attributes", open=False):
                    #     attr_name = gr.Textbox(
                    #         label="Attribute name", placeholder="Enter attribute name"
                    #     )
                    #     attr_desc = gr.Textbox(
                    #         label="Description", placeholder="Enter description"
                    #     )
                    #     attr_type = gr.Dropdown(
                    #         label="Type",
                    #         choices=[
                    #             "string",
                    #             "list[string]",
                    #             "int",
                    #             "list[int]",
                    #             "float",
                    #             "list[float]",
                    #             "bool",
                    #             "list[bool]",
                    #         ],
                    #         interactive=True,
                    #     )
                    #     allowed_values = gr.Textbox(
                    #         label="Allowed values (separated by comma)",
                    #         placeholder="yellow, red, blue",
                    #     )
                    #     add_btn = gr.Button("Add Attribute")

            with gr.Row():
                submit_btn = gr.Button("Extract Attributes")

        with gr.Column(scale=6):
            output_json = gr.Json(
                label="Extracted Attributes", value={}, show_indices=False
            )

    # add_btn.click(
    #     add_attribute_schema,
    #     inputs=[attributes, attr_name, attr_desc, attr_type, allowed_values],
    #     outputs=[attributes, attr_name, attr_desc, attr_type, allowed_values],
    # )

    submit_btn.click(
        forward_request,
        inputs=[attributes, product_taxnomy, product_data, ai_model, gallery],
        outputs=output_json,
    )


attr_user = os.getenv("ATTR_USER", "1")
attr_pass = os.getenv("ATTR_PASS", "a")
auth = (attr_user, attr_pass)
demo.launch(auth=auth, debug=True, ssr_mode=False)