CREATE TABLE sys_users
(
    id            INTEGER PRIMARY KEY GENERATED ALWAYS AS IDENTITY,
    account       TEXT        NOT NULL UNIQUE,
    username      TEXT        NOT NULL,
    password_hash TEXT        NOT NULL,
    status        SMALLINT    NOT NULL DEFAULT 1,
    avatar_id     INTEGER,
    token_version INTEGER     NOT NULL DEFAULT 0,
    created_at    TIMESTAMPTZ NOT NULL DEFAULT NOW(),
    updated_at    TIMESTAMPTZ,

    CHECK (status IN (0, 1))
);

CREATE INDEX idx_sys_users_account ON sys_users (account);

CREATE TRIGGER update_sys_users_updated_at
    BEFORE UPDATE
    ON sys_users
    FOR EACH ROW
EXECUTE FUNCTION update_updated_at_column();

COMMENT ON COLUMN sys_users.id IS '主键ID';
COMMENT ON COLUMN sys_users.account IS '用户账号';
COMMENT ON COLUMN sys_users.username IS '用户名称';
COMMENT ON COLUMN sys_users.password_hash IS 'hash密码';
COMMENT ON COLUMN sys_users.status IS '用户状态 0:禁用 1:启用';
COMMENT ON COLUMN sys_users.avatar_id IS '头像文件id';
COMMENT ON COLUMN sys_users.token_version IS 'Token Version';
COMMENT ON COLUMN sys_users.created_at IS '创建时间';
COMMENT ON COLUMN sys_users.updated_at IS '更新时间';