import os
import shutil
from moviepy.editor import VideoFileClip
import cv2
from PIL import Image
from tqdm import tqdm

def run_faceswap(source_path, target_path):
    if target_path.endswith(".jpg") or target_path.endswith(".png"):
        # Image face swap (mockup, actual logic should call Roop)
        output_path = "result.jpg"
        shutil.copy(target_path, output_path)
        return output_path

    elif target_path.endswith(".mp4"):
        os.makedirs("frames_input", exist_ok=True)
        os.makedirs("frames_output", exist_ok=True)

        clip = VideoFileClip(target_path)
        fps = clip.fps

        for i, frame in enumerate(clip.iter_frames()):
            Image.fromarray(frame).save(f"frames_input/frame_{i:05d}.jpg")

        # Mock face swap on each frame (copy as is)
        for frame_file in sorted(os.listdir("frames_input")):
            shutil.copy(f"frames_input/{frame_file}", f"frames_output/{frame_file}")

        frame_files = sorted(os.listdir("frames_output"))
        frame_images = [cv2.imread(f"frames_output/{f}") for f in frame_files]
        h, w, _ = frame_images[0].shape
        out_path = "result.mp4"
        video_writer = cv2.VideoWriter(out_path, cv2.VideoWriter_fourcc(*'mp4v'), fps, (w, h))

        for img in frame_images:
            video_writer.write(img)
        video_writer.release()

        return out_path

    else:
        raise ValueError("Unsupported file format")