"""
Checks the database kontor
"""

from logging import Logger
from pathlib import Path
import sys
from typing import Any, Dict, List, Optional
from argparse import ArgumentParser, ArgumentDefaultsHelpFormatter
from urllib.parse import urlparse
from simple_term_menu import TerminalMenu

from api import Server, get_api_config, get_logger


parser = ArgumentParser(formatter_class=ArgumentDefaultsHelpFormatter)
parser.add_argument("--verbose", "-v", action="count", default=0)
parser.add_argument("--config", "-c", default="kontor-api")
parser.add_argument("--dir", "-d", default="/data/media")
parser.add_argument("--add-dir", "-a", action="append")
parser.add_argument("--dry-run", "-m", action="store_true")
parser.add_argument("--server", "-s")
args = parser.parse_args()


def create_item_id_mapping(log: Logger, data_list: List[dict]) -> Dict[str, dict]:
    """
    create dictionary with id as key and dictionary as value.
    """
    item_id_mapping: Dict[str, dict] = {}
    for data_item in data_list:
        log.debug(data_item)
        item_id_mapping[data_item["id"]] = data_item
    return item_id_mapping


def remove_file(log: Logger, item_data: Dict[str, Any], media_dirs: List[str]):
    """
    Delete file from path in dictionary.
    """
    log.debug(item_data)
    cloud_link = item_data["cloud_link"]
    for file_dir in media_dirs:
        log.info("look in %s", file_dir)
        file_name = Path(cloud_link).name
        media_file = Path(file_dir, file_name)
        if media_file.exists():
            log.info("File to remove %s", media_file.absolute())
            media_file.unlink(missing_ok=True)
            break
        else:
            log.info("File not found %s", media_file.absolute())


def check_duplicate_links(log: Logger, server: Optional[Server], media_dirs: List[str]):
    """
    Check if there are MediaFile URLs which only differ in hostname.
    """
    if server is None:
        log.info("no server selected")
        return
    data = server.request(log=log, table="media_file")
    mapping = create_item_id_mapping(log=log, data_list=data)
    visited_link_path: Dict[str, str] = {}
    duplicate_link_paths: Dict[str, List[str]] = {}
    for item in data:
        link = item["url"]
        if len(link) == 0:
            continue
        file_id = item["id"]
        parsed_url = urlparse(link)
        link_path = parsed_url.path
        if link_path in visited_link_path:
            log.debug("duplicate url path found: %s", link_path)
            if link_path in duplicate_link_paths:
                duplicate_link_paths[link_path].append(file_id)
            else:
                duplicate_link_paths[link_path] = []
                duplicate_link_paths[link_path].append(visited_link_path[link_path])
                duplicate_link_paths[link_path].append(file_id)
        else:
            visited_link_path[link_path] = file_id
    log.info("found %s duplicate links", len(duplicate_link_paths.keys()))
    for _, value in duplicate_link_paths.items():
        choices = [mapping[value[0]]["url"], mapping[value[1]]["url"], "Abbruch"]
        menu = TerminalMenu(
            choices, title="Choose an link to delete:", multi_select=False
        )
        menu_choice = menu.show()
        if isinstance(menu_choice, int):
            if menu_choice == 2:
                break
            index: int = int(menu_choice)
            server.delete(log=log, table="media_file", item_id=value[index])
            remove_file(log, mapping[value[index]], media_dirs)
        else:
            print("selection canceled")


def check_media_dirs(log: Logger, server: Optional[Server], media_dirs: List[str]):
    """
    Check if contents of directories match MediaFiles.
    """
    if server is None:
        log.info("no server selected")
        return
    local_files = collect_files(media_dirs)
    data = server.request(log=log, table="media_file")
    for item in data:
        file_name = Path(item["cloud_link"]).name
        if file_name in local_files:
            log.debug("File %s found", file_name)
            local_files.remove(file_name)


def collect_files(media_dirs: List[str]) -> List[str]:
    """
    Collect file names from given directories.
    """
    collected_files: List[str] = []
    for media_dir in media_dirs:
        file_dir = Path(media_dir)
        if file_dir.is_dir():
            for entry in file_dir.iterdir():
                if entry.is_file():
                    collected_files.append(entry.name)
    return collected_files


if __name__ == "__main__":
    logger = get_logger(args.verbose, args.config)
    logger.info("kontor.check_kontor started")
    APICONFIG = get_api_config(logger, args.config)
    first_server: Optional[Server] = APICONFIG.get_server(args.server)
    if not first_server:
        sys.exit(2)
    dirs: List[str] = args.add_dir
    if dirs is None:
        dirs = [args.dir]
    else:
        dirs.insert(0, args.dir)
    logger.info(dirs)
    logger.info("kontor.check_kontor.check_duplicate_links")
    check_duplicate_links(logger, first_server, dirs)
    logger.info("kontor.check_kontor.check_media_dirs")
    check_media_dirs(logger, first_server, dirs)
    # logger.info("kontor.check_kontor.get_ids_from_column_cloud_link")
    # get_ids_from_column_cloud_link(link_list, mariadb_cursor)
    # logger.info('found {} ids in column cloud_link'.format(len(link_list)))
    # logger.info("kontor.check_kontor.checking_ids_from_cloud_link")
    # checking_ids_from_cloud_link(link_list, mariadb_cursor)
    logger.info("kontor.check_kontor finished")