1 files changed, 123 insertions, 0 deletions
diff --git a/app/utilities.py b/app/utilities.py
new file mode 100644
index 0000000..7140a5f
--- /dev/null
+++ b/app/utilities.py
@@ -0,0 +1,123 @@
+from typing import Tuple
+from random import shuffle, sample
+from match_up.data import Player, DisplayPlayer, Team, Game
+from match_up.data import MAX_LEVEL, PLAYER_PER_COURT
+
+
+def _shuffle_two_lists(a: list, b: list) -> Tuple[list, list]:
+    indices = list(range(len(a)))
+    shuffle(indices)
+    a = [a[index] for index in indices]
+    b = [b[index] for index in indices]
+    return a, b
+
+
+def _pick_from_list_after_sorting_other(a: list, b: list[int]) -> list:
+    indices = [i[0] for i in sorted(enumerate(b), key=lambda x: x[1])]
+    return [a[index] for index in indices]
+
+
+def sample_list(indices: list, cost: list[int], count=None) -> list:
+    if count is None:
+        count = len(indices)
+    indices, cost = _shuffle_two_lists(indices, cost)
+    indices = _pick_from_list_after_sorting_other(indices, cost)[:count]
+    return indices
+
+
+def _create_placeholders(courts: dict, name: str) -> list[Game]:
+    dummy_player = Player(id=-1, first=name)
+    dummy_team = Team(
+        player1=DisplayPlayer(dummy_player), player2=DisplayPlayer(dummy_player)
+    )
+    games = [Game(court, dummy_team, dummy_team) for court in courts]
+    return games
+
+
+def _normalize_skill(level: int, new_max: int) -> int:
+    new_level = round((new_max - 1) * (level / MAX_LEVEL)) + 1
+    return new_level
+
+
+def _select_players(players: list[Player], count: int) -> list[Player]:
+    identifiers = [player.id for player in players]
+    play_count = [int(player.count) for player in players]
+    ids = sample_list(identifiers, play_count, count)
+    selected_players = [player for player in players if player.id in ids]
+    return selected_players
+
+
+def _create_groups_of_four_players(
+    players: list[Player], new_max: int
+) -> list[list[Player]]:
+    identifiers = [player.id for player in players]
+    player_levels = [_normalize_skill(int(player.level), new_max) for player in players]
+    identifiers = sample_list(identifiers, player_levels)
+    court_players = []
+    for i in range(0, len(players), PLAYER_PER_COURT):
+        court_ids = identifiers[i : i + PLAYER_PER_COURT]
+        selected_players = [player for player in players if player.id in court_ids]
+        court_players.append(selected_players)
+    return court_players
+
+
+def _create_shuffle_games(
+    courts: dict, players: list[Player], levels: int
+) -> list[Game]:
+    court_players = _create_groups_of_four_players(players, levels)
+    games = []
+    for court, players in zip(courts, court_players):
+        team1 = Team(
+            player1=DisplayPlayer(players[0]), player2=DisplayPlayer(players[3])
+        )
+        team2 = Team(
+            player1=DisplayPlayer(players[1]), player2=DisplayPlayer(players[2])
+        )
+        games.append(Game(court, team1, team2))
+    return games
+
+
+def _create_team_games(courts: dict, teams: dict) -> tuple[list[Game], list[Player]]:
+    games = []
+    selected_players = []
+    for court, (_, players) in zip(courts, teams.items()):
+        players = sample(players, PLAYER_PER_COURT)
+        selected_players += players
+        players.sort(key=lambda x: x.level, reverse=True)
+        team1 = Team(
+            player1=DisplayPlayer(players[0]), player2=DisplayPlayer(players[3])
+        )
+        team2 = Team(
+            player1=DisplayPlayer(players[1]), player2=DisplayPlayer(players[2])
+        )
+        games.append(Game(court, team1, team2))
+    return games, selected_players
+
+
+def separate_teams_and_players(players: list[Player]) -> Tuple[dict, list[Player]]:
+    unique_team_id = {player.team for player in players}
+    grouped_players_by_team = {team_id: [] for team_id in unique_team_id}
+    for player in players:
+        team = player.team
+        grouped_players_by_team[team].append(player)
+    active_teams = {}
+    players_without_team = []
+    for team_id in grouped_players_by_team:
+        if team_id == 0:
+            players_without_team += [
+                player for player in grouped_players_by_team[team_id]
+            ]
+        else:
+            if len(grouped_players_by_team[team_id]) >= 4:
+                active_teams[team_id] = grouped_players_by_team[team_id]
+            else:
+                players_without_team += [
+                    player for player in grouped_players_by_team[team_id]
+                ]
+    return active_teams, players_without_team
+
+
+def split_courts(courts: dict, n) -> Tuple[dict, dict]:
+    first_half = {k: v for (k, v) in [x for x in courts.items()][:n]}
+    second_half = {k: v for (k, v) in [x for x in courts.items()][n:]}
+    return first_half, second_half