import os
import re
from collections import defaultdict
import logging
from .samba_manager import SambaManager
from .config import Settings
from smb.smb_structs import OperationFailure

# --- Dedicated logger for ComicsManager ---
comics_logger = logging.getLogger('comics_manager')
comics_logger.setLevel(logging.INFO)
comics_logger.propagate = False
if not comics_logger.handlers:
    comics_log_handler = logging.FileHandler("logs/comics_organization.log", mode='a')
    comics_log_handler.setFormatter(logging.Formatter('%(asctime)s - %(levelname)s - %(message)s'))
    comics_logger.addHandler(comics_log_handler)
    comics_logger.addHandler(logging.StreamHandler())

class ComicsManager:

    @staticmethod
    def _get_series_name(filename):
        base_name, _ = os.path.splitext(filename)
        pattern = re.compile(r'[-_\s]*(v(ol)?|c(h)?|chapter|issue|ep|episode)[-_\s]*\d+.*|[-_\s]+\d+$', re.IGNORECASE)
        match = pattern.search(base_name)
        if match:
            return base_name[:match.start()].strip('-_ ')
        return base_name.strip('-_ ')

    def cleanup_toberead(self, samba_manager: SambaManager):
        comics_logger.info("Starting cleanup of 'toberead' directory...")
        comics_root = "/comics/toberead"
        try:
            items_in_toberead = samba_manager.list_path(comics_root)
            if "error" in items_in_toberead:
                raise Exception(f"Failed to list files in 'toberead': {items_in_toberead['error']}")

            for item in items_in_toberead:
                item_path = item["path"]
                item_name = item["name"]
                if item["is_directory"]:
                    comics_logger.info(f"Deleting directory '{item_name}' and all its contents.")
                    try:
                        samba_manager.delete_directory_recursive(item_path)
                        comics_logger.info(f"Successfully deleted directory: {item_name}")
                    except OperationFailure as e:
                        comics_logger.error(f"Failed to delete directory {item_name}: {e}")
                else:
                    comics_logger.info(f"Deleting file '{item_name}'.")
                    try:
                        samba_manager.delete_file(item_path)
                        comics_logger.info(f"Successfully deleted file: {item_name}")
                    except OperationFailure as e:
                        comics_logger.error(f"Failed to delete file {item_name}: {e}")
            
            comics_logger.info("Cleanup of 'toberead' finished.")

        except Exception as e:
            comics_logger.error(f"An error occurred during 'toberead' cleanup: {e}", exc_info=True)

    def organize_comics(self, samba_manager: SambaManager):
        comics_logger.info("Starting comics organization process...")
        comics_root = "/comics/toberead"
        comics_dest_root = "/comics/manga"
        try:
            items_in_toberead = samba_manager.list_path(comics_root)
            if "error" in items_in_toberead:
                raise Exception(f"Failed to list files in 'toberead': {items_in_toberead['error']}")

            series_chapters = defaultdict(list)
            for item in items_in_toberead:
                if not item["is_directory"]:
                    series_name = self._get_series_name(item["name"])
                    series_chapters[series_name].append(item)
            
            comics_logger.info(f"Found {len(series_chapters)} series to process.")

            for series_name, chapters in series_chapters.items():
                comics_logger.info(f"Processing series: {series_name}")
                final_series_folder_path = f"{comics_dest_root}/{series_name}".replace("\\", "/")
                
                try:
                    samba_manager.create_directory(final_series_folder_path)
                except OperationFailure as e:
                    if "FILE_OBJECT_NAME_COLLISION" not in str(e):
                        comics_logger.error(f"Could not create directory {final_series_folder_path}: {e}")
                
                for chapter_item in chapters:
                    original_path = chapter_item["path"].replace("\\", "/")
                    original_filename = chapter_item["name"]
                    
                    path_to_move = ""
                    filename_to_move = ""

                    if original_filename.lower().endswith('.zip'):
                        cbz_filename = os.path.splitext(original_filename)[0] + '.cbz'
                        temp_cbz_path = f"{comics_root}/{cbz_filename}".replace("\\", "/")
                        
                        try:
                            samba_manager.rename_file(original_path, temp_cbz_path)
                            path_to_move = temp_cbz_path
                            filename_to_move = cbz_filename
                            comics_logger.info(f"Renamed {original_filename} to {cbz_filename}")
                        except OperationFailure as e:
                            comics_logger.error(f"Failed to rename ZIP {original_filename}: {e}")
                            continue
                    
                    elif original_filename.lower().endswith('.cbz'):
                        path_to_move = original_path
                        filename_to_move = original_filename
                    else:
                        continue

                    final_cbz_path = f"{final_series_folder_path}/{filename_to_move}".replace("\\", "/")
                    
                    try:
                        samba_manager.rename_file(path_to_move, final_cbz_path)
                        comics_logger.info(f"Moved {filename_to_move} to {final_series_folder_path}")
                    except OperationFailure as e:
                        comics_logger.error(f"Failed to move {filename_to_move} to {final_series_folder_path}: {e}")

        except Exception as e:
            comics_logger.error(f"An error occurred during comics organization: {e}", exc_info=True)
        
        comics_logger.info("Comics organization process finished.")
            
        return