app.py

"""
app.py - Gradio app for Hugging Face Spaces
---------------------------------------------
Hosts the Bean Disease Classifier as a permanent, always-on API endpoint
that the Flet app (or anything else) can call.

This file goes in the root of your Hugging Face Space repo alongside
requirements.txt and README.md.
"""

import gradio as gr
from huggingface_hub import from_pretrained_fastai
from fastai.vision.all import PILImage

HF_MODEL_ID = "MarkJoshua/Mak-Bean-Disease-Classifier"

learner = from_pretrained_fastai(HF_MODEL_ID)


def classify(img):
    # Gradio hands us a plain PIL.Image.Image - fastai's transform pipeline
    # expects its own PILImage subclass, so convert before predicting.
    img = PILImage.create(img)
    pred_label, pred_idx, probs = learner.predict(img)
    vocab = learner.dls.vocab
    return {str(vocab[i]): float(probs[i]) for i in range(len(probs))}


demo = gr.Interface(
    fn=classify,
    inputs=gr.Image(type="pil"),
    outputs=gr.Label(num_top_classes=5),
    title="Bean Disease Classifier",
    description=f"Model: {HF_MODEL_ID}",
)

if __name__ == "__main__":
    demo.launch()