import _ from "lodash";
import { DefaultEntryType } from "../types";
import defaultFieldsRegexp from "../functions/dsql/default-fields-regexp";

export default function purgeDefaultFields<
    T extends { [k: string]: any } = DefaultEntryType & { [k: string]: any }
>(entry: T | T[]): T | T[] {
    const newEntry = _.cloneDeep(entry);

    if (Array.isArray(newEntry)) {
        const entryKeys = Object.keys(newEntry[0]);

        for (let i = 0; i < newEntry.length; i++) {
            for (let j = 0; j < entryKeys.length; j++) {
                const entryKey = entryKeys[j];
                if (defaultFieldsRegexp.test(entryKey)) {
                    delete newEntry[i][entryKey];
                }
            }
        }

        return newEntry;
    } else {
        const entryKeys = Object.keys(newEntry);

        for (let i = 0; i < entryKeys.length; i++) {
            const entryKey = entryKeys[i];
            if (defaultFieldsRegexp.test(entryKey)) {
                delete newEntry[entryKey];
            }
        }

        return newEntry;
    }
}