import { DSQL_TableSchemaType } from "../../types";
import decrypt from "../dsql/decrypt";
import defaultFieldsRegexp from "../dsql/default-fields-regexp";

type Param = {
    unparsedResults: any[];
    tableSchema?: DSQL_TableSchemaType;
};

/**
 * Parse Database results
 * ==============================================================================
 * @description this function takes a database results array gotten from a DB handler
 * function, decrypts encrypted fields, and returns an updated array with no encrypted
 * fields
 */
export default function parseDbResults({
    unparsedResults,
    tableSchema,
}: Param): any[] | null {
    let parsedResults = [];

    try {
        for (let pr = 0; pr < unparsedResults.length; pr++) {
            let result = unparsedResults[pr];

            let resultFieldNames = Object.keys(result);

            for (let i = 0; i < resultFieldNames.length; i++) {
                const resultFieldName = resultFieldNames[i];
                let resultFieldSchema = tableSchema?.fields.find(
                    (fld) => fld.fieldName == resultFieldName
                );

                if (resultFieldName?.match(defaultFieldsRegexp)) {
                    continue;
                }

                let value = result[resultFieldName];

                if (typeof value !== "number" && !value) {
                    continue;
                }

                if (resultFieldSchema?.encrypted) {
                    if (value?.match(/./)) {
                        result[resultFieldName] = decrypt({
                            encryptedString: value,
                        });
                    }
                }

                if (value && typeof value == "object") {
                    result[resultFieldName] = "";
                }
            }

            parsedResults.push(result);
        }

        return parsedResults;
    } catch (error: any) {
        return unparsedResults;
    }
}