import sqlite3

def init_db():
    # Neue englische Datenbank-Datei
    connection = sqlite3.connect("warhammer_league.db")
    cursor = connection.cursor()

    # Fremdschlüssel (Foreign Keys) in SQLite aktivieren
    cursor.execute('PRAGMA foreign_keys = ON;')

    # Tabelle: players (ehemals spieler)
    cursor.execute('''
        CREATE TABLE IF NOT EXISTS players (
            id INTEGER PRIMARY KEY AUTOINCREMENT,
            discord_id TEXT UNIQUE,
            name TEXT NOT NULL,
            mmr INTEGER DEFAULT 1000,
            points INTEGER DEFAULT 0,
            games INTEGER DEFAULT 0
        )
    ''')

    # Tabelle: matches (ehemals spiele)
    cursor.execute('''
        CREATE TABLE IF NOT EXISTS matches (
            id INTEGER PRIMARY KEY AUTOINCREMENT,
            player1_id INTEGER,
            score_player1 INTEGER,
            player2_id INTEGER,
            score_player2 INTEGER,
            FOREIGN KEY (player1_id) REFERENCES players (id),
            FOREIGN KEY (player2_id) REFERENCES players (id)
        )
    ''')

    connection.commit()
    connection.close()

    print("Warhammer database successfully initialized!")

def get_or_create_player(discord_id, discord_name):
    # 1. Verbindung öffnen
    connection = sqlite3.connect("warhammer_league.db")
    cursor = connection.cursor()

    # 2. Suchen, ob der Spieler schon existiert
    cursor.execute("SELECT id, name, mmr, points, games FROM players WHERE discord_id = ?", (discord_id,))
    player = cursor.fetchone()

    # 3. Wenn der Spieler nicht gefunden wurde (ist "None")
    if player is None:
        # Neu anlegen
        cursor.execute("INSERT INTO players (discord_id, name) VALUES (?, ?)", (discord_id, discord_name))
        connection.commit()

        # Den frisch angelegten Spieler direkt wieder auslesen, um seine neue ID zu bekommen
        cursor.execute("SELECT id, name, mmr, points, games FROM players WHERE discord_id = ?", (discord_id,))
        player = cursor.fetchone()

    # 4. Verbindung schließen
    connection.close()

    # 5. Daten zurückgeben
    return player

if __name__ == "__main__":
    init_db()


def get_all_players():
    connection = sqlite3.connect("warhammer_league.db")
    cursor = connection.cursor()

    # Alle Spieler laden, absteigend sortiert nach MMR
    cursor.execute("SELECT id, name, mmr, points, games FROM players ORDER BY mmr DESC")
    players = cursor.fetchall()

    connection.close()

    # Die Daten für das Web-GUI in eine lesbare Form umwandeln (Liste von Dictionaries)
    result = []
    for player in players:
        result.append({
            'id': player[0],
            'name': player[1],
            'mmr': player[2],
            'points': player[3],
            'games': player[4]
        })

    return result