from typing import Tuple
from operator import attrgetter
from match_up.data import Game, PLAYER_PER_COURT
from match_up.model import Player, PlayerList, CourtList
from match_up.utilities import _create_placeholders, _select_players, _create_games


class RoundGenerator:
    proposed_games: list[Game] = []
    proposed_players: list[Player] = []

    def __init__(self) -> None:
        self.courts = CourtList()
        self.players = PlayerList()
        self.reset()

    def _separate_courts(self, courts: dict) -> Tuple[dict, dict]:
        possible_games = min(len(courts), self.players.get_possible_game_count())
        courts_as_list = list(courts.items())
        used_courts = dict(courts_as_list[:possible_games])
        unused_courts = dict(courts_as_list[possible_games:])
        return used_courts, unused_courts

    def _create_inactive_games(self) -> list[Game]:
        active_courts, reserved_courts = self.courts.separate_courts()
        reserved_games = _create_placeholders(reserved_courts, "RESERVED")
        _, unused_courts = self._separate_courts(active_courts)
        blank_games = _create_placeholders(unused_courts, "---")
        games = reserved_games + blank_games
        return games

    def _create_active_games(
        self, total_levels: int
    ) -> Tuple[list[Game], list[Player]]:
        active_courts, _ = self.courts.separate_courts()
        used_courts, _ = self._separate_courts(active_courts)
        required_player_count = len(used_courts) * PLAYER_PER_COURT
        active_players = self.players.get_players()
        selected_players = _select_players(active_players, required_player_count)
        games = _create_games(used_courts, selected_players, total_levels)
        return games, selected_players

    def _generate_proposal(self, total_levels: int) -> Tuple[list[Game], list[Player]]:
        inactive_games = self._create_inactive_games()
        active_games, selected_players = self._create_active_games(total_levels)
        games = active_games + inactive_games
        games.sort(key=attrgetter("court"))
        return games, selected_players

    def update_player_list(self, csv_location):
        self.players = PlayerList(csv_location)

    def clear(self) -> list[Game]:
        self.proposed_games = []
        self.proposed_players = []
        return self.games

    def propose(self, levels: int) -> list[Game]:
        proposal = self._generate_proposal(levels)
        self.proposed_games = proposal[0]
        self.proposed_players = proposal[1]
        return self.proposed_games

    def confirm(self) -> list[Game]:
        if len(self.proposed_games) == 0:
            return self.games
        self.games = self.proposed_games
        identifiers = [int(player.id) for player in self.proposed_players]
        self.players.increment_game_count(identifiers)
        self.round += 1
        return self.clear()
    
    def reset(self):
        self.round = 0
        self.games = _create_placeholders(self.courts.get_courts(), "---")
        self.players.reset_game_count()
        return self.games