app.py

import gradio as gr
import shutil
import os
from MangaTranslator import MangaTranslator
import torch

_original_jit_load = torch.jit.load

def _safe_jit_load(f, map_location=None, _extra_files=None):
    # Force CPU mapping regardless of what the library asks for
    return _original_jit_load(f, map_location=torch.device('cpu'), _extra_files=_extra_files)

torch.jit.load = _safe_jit_load

# 1. Initialize the Translator (runs once on startup)
print("⏳ Initializing models... (This takes 30s)")
translator = MangaTranslator(
    yolo_model_path='comic_yolov8m.pt',
    translation_model="LiquidAI/LFM2-350M-ENJP-MT",
    font_path="font.ttf"
)
print("✅ Models Ready!")

# 2. Define the Processing Function
def translate_manga(input_image):
    if input_image is None:
        return None
        
    # Create temp paths for the pipeline
    temp_in = "temp_input.jpg"
    temp_out = "temp_output.jpg"
    
    # Gradio gives us a PIL image, save it so your script can read it
    input_image.save(temp_in)
    
    # Run your existing pipeline
    try:
        translator.process_single_image(
            image_path=temp_in,
            output_path=temp_out,
            series_info=None # No context for the demo
        )
        return temp_out
    except Exception as e:
        print(f"Error: {e}")
        return input_image # Return original if fail

# 3. Launch the Interface
if __name__ == "__main__":
    iface = gr.Interface(
        fn=translate_manga,
        inputs=gr.Image(type="pil", label="Upload Manga Page (Japanese)"),
        outputs=gr.Image(type="filepath", label="Translated Page (English)"),
        title="✨ LiquidAI Manga Translator (350M Demo)",
        description="Running natively on CPU using Liquid LFM2-350M, MangaOCR, and LaMa Inpainting.",
        examples=[["example.jpg"]] # Optional: If you upload an example image
    )
    iface.launch()