CREATE TABLE IF NOT EXISTS teams (
    id         INTEGER PRIMARY KEY AUTOINCREMENT,
    code       TEXT NOT NULL UNIQUE,
    name       TEXT NOT NULL,
    short_name TEXT,
    logo_path  TEXT,
    color      TEXT,
    sort_order INTEGER NOT NULL DEFAULT 0,
    active     INTEGER NOT NULL DEFAULT 1 CHECK (active IN (0, 1))
);

CREATE INDEX IF NOT EXISTS idx_teams_sort_order ON teams(sort_order, code);

CREATE TABLE IF NOT EXISTS athletes (
    id          INTEGER PRIMARY KEY AUTOINCREMENT,
    name        TEXT NOT NULL,
    gender      TEXT CHECK (gender IN ('男', '女')),
    team_id     INTEGER REFERENCES teams(id),
    employee_no TEXT,
    active      INTEGER NOT NULL DEFAULT 1 CHECK (active IN (0, 1))
);

CREATE INDEX IF NOT EXISTS idx_athletes_team_id ON athletes(team_id);
CREATE INDEX IF NOT EXISTS idx_athletes_name ON athletes(name);