import os
from PIL import Image
from PIL.PngImagePlugin import PngImageFile, PngInfo
import shutil

def get_png_files(folder_path):
    """Get a list of all PNG files in the specified folder."""
    return [f for f in os.listdir(folder_path) if f.endswith('.png')]


def read_metadata(image_path):
    """Read the metadata of a PNG file."""
    with Image.open(image_path) as img:
        return img.info


def search_in_metadata(folder_path, search_word):
    """Search for a specific word in the metadata of PNG files in the specified folder."""
    matching_files = []
    folder_path = f"./{folder_path}"
    sort_folder_path = f"./{folder_path}_sort"
    png_files = get_png_files(folder_path)

    for file in png_files:
        file_path = os.path.join(folder_path, file)
        metadata = read_metadata(file_path)
        search_word_lower = search_word.lower()
        # Check if the search word is in any of the metadata values
        for key, value in metadata.items():
            if isinstance(value, str) and search_word_lower in value.lower():
                matching_files.append(file)
                break
    if os.path.exists(sort_folder_path):
        shutil.rmtree(sort_folder_path)
    os.makedirs(sort_folder_path)
    move_files(folder_path, sort_folder_path, matching_files)
    return [os.path.splitext(file)[0] for file in matching_files]

def move_files(src_folder, dst_folder, files):
    """Move the specified files from the source folder to the destination folder."""
    if not os.path.exists(dst_folder):
        os.makedirs(dst_folder)

    for file in files:
        src_path = os.path.join(src_folder, file)
        dst_path = os.path.join(dst_folder, file)
        shutil.move(src_path, dst_path)