import url from 'url';

export class SiteInfo {
    public protocol?: string = 'https';
    public name?: string;
    public title?: string;
    public short_title?: string;
    public host?: string;
    public port?: number = 443;
    public api: string;
    public needLogin?: boolean = true;
}

export class CjfecOptions {
    public site: SiteInfo = new SiteInfo();
    [prop: string]: any
}

/**
 * 组件库全局类
 */
export default class Cjfec {

    /**
     * 初始化，在项目入口处执行
     * @param options
     */
    public static init(options: CjfecOptions) {
        Cjfec._instance = new Cjfec(options);
    }

    /**
     * 获取单例实例
     * @param options
     */
    public static getInstance(): Cjfec {
        if (!Cjfec._instance) {
            throw new Error('实例不存在，请先在项目入口处通过Cjfec.init(options: CjfecOptions)初始化！');
        }
        return Cjfec._instance;
    }
    private static _instance: Cjfec;
    private _options: CjfecOptions;

    /**
     * 构造函数
     */
    private constructor(options: CjfecOptions) {
        if (Cjfec._instance) {
            throw new Error('实例化失败，请使用 Cjfec.getInstance() 代替new');
        }
        if (options) {
            this._options = options;
        } else {
            throw new Error('Cjfec配置不能为空!');
        }
        Cjfec._instance = this;
    }

    /**
     * 获取配置
     */
    public getOptions(prop?: string): any {
        if (prop) { return this._options[prop]; }
        return this._options;
    }

    /**
     * 获取Api
     * TODO：
     *  后续删掉
     */
    public getApi(): string {
        const site = this._options.site;
        return url.format({
            protocol: site.protocol,
            hostname: site.api,
        });
    }
}