-- 商户自定义员工角色。role code 仅在所属商户内唯一，权限以逗号分隔保存。
CREATE TABLE IF NOT EXISTS merchant_roles (
    id BIGSERIAL PRIMARY KEY,
    created_at TIMESTAMPTZ,
    updated_at TIMESTAMPTZ,
    merchant_id BIGINT NOT NULL,
    code VARCHAR(64) NOT NULL,
    name VARCHAR(64) NOT NULL,
    permissions TEXT NOT NULL DEFAULT '',
    status BIGINT NOT NULL DEFAULT 1
);

CREATE UNIQUE INDEX IF NOT EXISTS idx_merchant_role_code
    ON merchant_roles (merchant_id, code);
CREATE INDEX IF NOT EXISTS idx_merchant_roles_merchant_id
    ON merchant_roles (merchant_id);