-- 001: Users table (user-service)
CREATE TABLE IF NOT EXISTS users (
    id UUID PRIMARY KEY DEFAULT gen_random_uuid(),
    phone VARCHAR(20) UNIQUE,
    email VARCHAR(100) UNIQUE,
    password_hash VARCHAR(255) NOT NULL,
    nickname VARCHAR(50),
    avatar_url VARCHAR(500),
    kyc_level SMALLINT NOT NULL DEFAULT 0 CHECK (kyc_level BETWEEN 0 AND 3),
    wallet_mode VARCHAR(10) NOT NULL DEFAULT 'standard' CHECK (wallet_mode IN ('standard', 'external', 'pro')),
    role VARCHAR(20) NOT NULL DEFAULT 'user' CHECK (role IN ('user', 'issuer', 'market_maker', 'admin')),
    status VARCHAR(20) NOT NULL DEFAULT 'active' CHECK (status IN ('active', 'frozen', 'deleted')),
    residence_state VARCHAR(5),
    nationality VARCHAR(5),
    last_login_at TIMESTAMPTZ,
    created_at TIMESTAMPTZ NOT NULL DEFAULT NOW(),
    updated_at TIMESTAMPTZ NOT NULL DEFAULT NOW()
);

CREATE INDEX idx_users_phone ON users(phone);
CREATE INDEX idx_users_email ON users(email);
CREATE INDEX idx_users_status ON users(status);
CREATE INDEX idx_users_role ON users(role);
CREATE INDEX idx_users_kyc_level ON users(kyc_level);