import { getStorage, removeStorage, setStorage } from "../storage"

export interface URLQuery {
    agent_id: number
    site_id: number
    queryStr: string
    gdt_vid: string
    weixinadinfo: string
}

const STORAGE_KEY = "urlQuery"

const DEFAULT_URL_QUERY: URLQuery = {
    agent_id: 0,
    site_id: 0,
    queryStr: "",
    gdt_vid: "",
    weixinadinfo: ""
}


class URLQueryModel {
    private static instance: URLQueryModel | null = null;
    private data: URLQuery;

    private constructor() {
        this.data = getStorage<URLQuery>(STORAGE_KEY, DEFAULT_URL_QUERY) ?? DEFAULT_URL_QUERY;
    }

    static getInstance(): URLQueryModel {
        if (!URLQueryModel.instance) {
            URLQueryModel.instance = new URLQueryModel();
        }
        return URLQueryModel.instance;
    }

    get(): URLQuery {
        return this.data;
    }

    save(urlQuery: URLQuery): boolean {
        this.data = urlQuery;
        return setStorage(STORAGE_KEY, urlQuery);
    }

    clear(): boolean {
        this.data = { ...DEFAULT_URL_QUERY };
        return removeStorage(STORAGE_KEY);
    }
}


export default URLQueryModel;