import PySimpleGUI as sg
import json as js
import ui

class Helper:
    def __init__(self):
        self.song_file = "G:\\Working\\MDB\\song.txt"
        self.dance_file = "G:\\Working\\MDB\\dance.txt"
        self.song_file_json = "G:\\Working\\MDB\\songs.json"

    def get_songs_dict(self, *args):        
        '''
        Retrieves all Songs Containing the Input as a dictionary.

        Parameters:
        *args (str): Parameters to search for.

        Returns:
        list: List of song dicts containing all specified substrings.      
        '''
        result_list = []
        try:
            with open(self.song_file_json, 'r') as file:
                for line in file:
                    try:
                        song = js.loads(line)
                    except ValueError:
                        print(f"skipping{line}")
                    # Convert values to strings for substring search
                    if all(any(arg in str(value) for value in song.values()) for arg in args):
                        song["dance"] = song["dance"][0].split(":")
                        result_list.append(song)
        except FileNotFoundError:
            sg.popup_error('Datei wurde nicht gefunden.')
            return 0    
        except IsADirectoryError:
            sg.popup_error('The given Filepath is a directory')
            return 0
        except PermissionError:
            sg.popup_error('The program has no permission to acces file')
            return 0
        return result_list
    
    def get_songs_dict_beautified(self, dance_length, format, *args):
        ugly_songs = self.get_songs_dict(*args)
        beautiful_songs = []
        beautiful_lists = []
        if not ugly_songs:
            return []
        for song in ugly_songs:
            dance_list = song["dance"]
            match dance_length:
                case "long":
                    song["dance"] = str(dance_list[1])  # Keep the second element for "long"
                    beautiful_songs.append(song)
                case "short":
                    song["dance"] = str(dance_list[0])  # Keep the first element for "short"
                    beautiful_songs.append(song)
        match format:
            case "list":
                for song in beautiful_songs:
                    beautiful_lists.append(list(song.values()))
        print(beautiful_lists)
        return beautiful_lists
                    
    def write_song_json(self, song, artist, album, duration, dance, comment):
        """
        Writes multiple values as a single line to the song file: "{Song}{Artist}{Album}{Duration}{Dance}{comment}"
        """
        #sets default duration to "00:00:00"
        if duration == "":
            duration = "00:00:00"
        #validate the data
        validation_result = self.validate_song(song, artist, album, duration, dance)
        match validation_result:
            case 0:
                return validation_result
            case 1:
                return validation_result
            case 2:
                return validation_result
            case 3:
                return validation_result
        #convert the data to a json object
        dance_tuple = self.get_dance(dance)
        song_dict = {"song":song,"artist":artist,"album":album,"duration":duration,"dance":dance_tuple,"comment":comment}
        try:
            with open(self.song_file_json, "a") as f:
                f.write(f"{js.dumps(song_dict)}\n")
            return None
        except FileNotFoundError:
            sg.popup_error('Datei wurde nicht gefunden.')
            return 0
        except IsADirectoryError:
            sg.popup_error('The given Filepath is a directory')
            return 0
        except PermissionError:
            sg.popup_error('The program has no permission to acces file')
            return 0
    def get_dance(self, input):
        """
        Retrieves All Dances containing the Input

        Parameters:
        input (str): Substring to search for in the dance file.

        Returns:
        list: List of tuples containing matching short and long dances.
              Empty list if no matches found.
        """
        result_list = []
        try:
            with open(self.dance_file, 'r') as f:
                for line in f:
                    short, long = line.strip().split(':')
                    if input == short or input == long:
                        result_list.append(f"{short}:{long}")  # Append "short:long"
            return result_list
        except FileNotFoundError:
            sg.popup_error('Datei wurde nicht gefunden.')
            return 0
        except IsADirectoryError:
            sg.popup_error('The given Filepath is a directory')
            return 0
        except PermissionError:
            sg.popup_error('The program has no permission to acces file')
            return 0
    def add_dance(self, short, long):
        """
        Appends a new line to the dance file in the following format: "short:long"

        Parameters:
        short (str): Short name of the dance.
        long (str): Full name of the dance.
        """
        try:
            with open(self.dance_file, "a") as f:
                f.write(f"{short}:{long}\n")
        except FileNotFoundError:
            sg.popup_error('Datei wurde nicht gefunden.')
            return 0
        except IsADirectoryError:
            sg.popup_error('The given Filepath is a directory')
            return 0
        except PermissionError:
            sg.popup_error('The program has no permission to acces file')
            return 0

    def validate_time_format(self, string, delimiter=":"):
        """
        Checks if string is in "hh:mm:ss" Format or in "mm:ss" format

        Parameters:
        string (str): the string to be checked.
        delimiter (str): the delimiter between the numbers.

        Returns:
        bool: True, wenn der String gültig ist, False sonst.
        """
        parts = string.split(delimiter)
    
        if len(parts) == 2:
            minute, second = parts
            hour = "00"
        elif len(parts) == 3:
            hour, minute, second = parts
        else:
            return False
        if not hour.isdigit() and minute.isdigit() and second.isdigit():
            return False
        hour = int(hour)
        minute = int(minute)
        second = int(second)
        if not (0 <= hour < 24) or not (0 <= minute < 60) or not (0 <= second < 60):
            return False
        return True
    def validate_song(self, song, artist, album, duration, dance):
        """
        Validates a song based on its attributes.

        Parameters:
        song (str): The title of the song.
        artist (str): The artist of the song.
        album (str): The album of the song.
        duration (int): The duration of the song.
        dance (str): The dance style of the song.

        Returns:
        1: if song already is in the database
        2: if the duration is invalid
        3: if the dance is invalid
        """
        # Check if the song already exists in the database
        exists = self.get_songs_dict(song, artist, album, duration, dance)
        dance_entry = self.get_dance(dance)
        if exists and exists != 0:
            sg.popup_error('This Song already exists')
            return 1
        if not self.validate_time_format(duration):
            sg.popup_error('The Time Format is not Valid. Please use "00:00:00"')
            return 2
    
        # Check if the dance style is invalid
        if dance_entry == 0:
            return
        if not dance_entry:
            sg.popup_error('The Dance is not valid')
            return 3

        # Otherwise, return the dance style found in the database
        return dance_entry

class Settings:
    def __init__(self) -> None:
        pass          
if __name__ == "__main__":
    app = ui.Main()
    app.run()