-- migrations/XXXXXX_create_users_table.sql

CREATE TABLE IF NOT EXISTS users (
    id SERIAL PRIMARY KEY,
    username VARCHAR(50) UNIQUE NOT NULL,
    password_hash TEXT NOT NULL,
    bank_user_id VARCHAR(50) NOT NULL,  -- e.g., "team275-1"
    created_at TIMESTAMPTZ NOT NULL DEFAULT NOW(),
    
    CONSTRAINT username_length CHECK (char_length(username) >= 3)
);

CREATE INDEX IF NOT EXISTS idx_users_username ON users(username);
CREATE INDEX IF NOT EXISTS idx_users_bank_user_id ON users(bank_user_id);