extends Node

@export var generate_playlist_now = false
@export var checksum_test = false
@export var load_playlist_from_file = false
@export var maps_in_rotation : Array[level_resource] = []
@export var gamemodes_in_rotation : Array[gamemode]= []
@export var levels_per_round : int = 5
@export var rounds_per_match : int = 3
@export var matches_per_year : int = 52

func generate_playlist() -> void:
	var playlist_name = only_valid_chars(GameGlobals.all_user_leaderboards[GameGlobals.user_id][GameGlobals.last_leaderboard_id])
	var playlist = []
	print("PLAYLIST CREATED FOR THE : ",playlist_name)
	for h in matches_per_year:
		var matches = []
		for i in rounds_per_match:
			var round = []
			for x in levels_per_round:
				var gamemode_path = gamemodes_in_rotation.pick_random().resource_path
				var level_selection = maps_in_rotation.pick_random()
				var level_details = {
					"level_path" : level_selection.level_path,
					"level_name" : level_selection.level_name,
					"gamemode_path" : gamemode_path
				}
				round.append(level_details)
			matches.append(round)
		playlist.append(matches)
	
	save_playlist(playlist)
	generate_playlist_now = false


func only_valid_chars(input_string: String) -> String:
	var valid_chars = ""
	
	for char in input_string:
		if char.is_valid_identifier():
			valid_chars += char
		elif  char == " ":
			valid_chars += "_"
	
	return valid_chars

func save_playlist(playlist):
	var playlist_name = str(only_valid_chars(GameGlobals.all_user_leaderboards[GameGlobals.user_id][GameGlobals.last_leaderboard_id]))
	var playlist_path : String = "user://"+ playlist_name + "_playlist.save"
	var file = FileAccess.open(playlist_path, FileAccess.WRITE)
	file.store_var(only_valid_chars(GameGlobals.all_user_leaderboards[GameGlobals.user_id][GameGlobals.last_leaderboard_id]))
	file.store_var(playlist)
	file.close()

func load_playlist():
	var playlist_path : String = "user://" + str(GameGlobals.all_user_leaderboards[GameGlobals.user_id][GameGlobals.last_leaderboard_id]) + "_playlist.save"
	if FileAccess.file_exists(playlist_path):
		var file = FileAccess.open(playlist_path, FileAccess.READ)
		var key = file.get_var()
		var playlist = file.get_var()
		print("KEY : ",key)
		GameGlobals.playlist_test = playlist
		GameGlobals.current_match = playlist[0]
		file.close()
	else:
		print("no data saved, generating new playlist...")
		generate_playlist()