class Auth {
    static _getKey() {
        return '__DEEP_RACER_TOKEN';
    }

    static _eventList = [];

    static get() {
        const res = localStorage.getItem(this._getKey());
        if (res) {
            try {
                return JSON.parse(res);
            } catch {
                return null;
            }
        }
        return null;
    }

    /**
     * 默认是追加数据，这样方便设置 schoolId
     */
    static set(auth, append = true) {
        let value = append ? this.get() : auth;

        if (append) {
            if (value) {
                value = {
                    ...value,
                    ...auth,
                };
            } else {
                value = auth;
            }
        }

        localStorage.setItem(this._getKey(), JSON.stringify(value));

        for (const callback of this._eventList) {
            callback(value);
        }
    }

    static remove() {
        localStorage.removeItem(this._getKey());
        for (const callback of this._eventList) {
            callback(null);
        }
    }

    static addListener(callback) {
        this._eventList.push(callback);
        window.addEventListener('storage', (e) => {
            if (e.key === this._getKey()) {
                callback(e.newValue ? JSON.parse(e.newValue) : null);
            }
        });
    }
}

window.Auth = Auth;