const defaultExcludedItemsFromResponse = ['__v', 'password'];

class HttpResponse {

    /**
     * @author Sunil Kumar Samanta
     * @param data : Object | Array | String
     * @param options : {totalCount: Number, statusCode: Number, deleted: Boolean}
     */
    error = false;
    responseTimestamp = new Date();

    constructor(data, options = { 'totalCount': 0, 'statusCode': 200, 'deleted': null }) {
        this.statusCode = options.statusCode || 200;
        let filteredData = data;

        if (typeof (filteredData) === 'object') {
            filteredData = this.filterData(JSON.parse(JSON.stringify(filteredData)));
        }
        if (options.deleted) {
            this.deleted = options.deleted;
        }
        if (Array.isArray(filteredData)) {
            this.data = [...filteredData];
            this.totalCount = options.totalCount || undefined;
        } else if (typeof (filteredData) === 'object') {
            this.data = { ...filteredData };
        } else {
            this.data = data;
        }
    }

    filterData(data) {
        if (Array.isArray(data)) {
            data.map((x, index) => {
                Object.keys(x).forEach((key) => {
                    if (defaultExcludedItemsFromResponse.includes(key)) {
                        delete data[index][key];
                    }
                });
            });
        } else if (typeof (data) === 'object') {
            Object.keys(data).forEach((key) => {
                if (defaultExcludedItemsFromResponse.includes(key)) {
                    delete data[key];
                }
            });
        }
        return data;
    }
}

module.exports = { HttpResponse };