import { JSONPath } from 'jsonpath-plus';
import pThrottle from 'p-throttle';
import pMap from 'p-map';
export const isNumber = async (input) => (/^-?\d+(\.\d+)?$/.test(input));
export const isBoolean = async (input) => /^(true|false)$/i.test(input);
export const isValidString = async (input) => !(input.trim() !== '');
export const testFilters = (filters) => {
    return async (input) => {
        for (const filter of filters) {
            if (await filter(input)) {
                return false;
            }
        }
        return true;
    };
};
export const defaultFilters = (filters = []) => [
    isNumber, isBoolean, isValidString, ...filters
];
export async function transformObject(obj, transform, path, throttleDelay, concurrentTasks, errorCallback, testCallback) {
    const paths = JSONPath({ path, json: obj, resultType: 'pointer' });
    await pMap(paths, async (jsonPointer) => {
        const keys = jsonPointer.slice(1).split('/');
        await transformPath(obj, keys, transform, throttleDelay, concurrentTasks, jsonPointer, errorCallback, testCallback);
    }, { concurrency: concurrentTasks });
}
export async function transformPath(obj, keys, transform, throttleDelay, concurrentTasks, currentPath, errorCallback, testCallback) {
    let current = obj;
    for (let i = 0; i < keys.length - 1; i++) {
        current = current[keys[i]];
    }
    const lastKey = keys[keys.length - 1];
    const throttle = pThrottle({
        limit: 1,
        interval: throttleDelay,
    });
    if (typeof lastKey === 'string' && lastKey !== '') {
        try {
            const newKey = isValidString(lastKey) && !isNumber(lastKey) ? await throttle(transform)(lastKey, currentPath) : lastKey;
            if (newKey !== lastKey) {
                current[newKey] = current[lastKey];
                delete current[lastKey];
            }
            if (typeof current[newKey] === 'string' && current[newKey] !== '') {
                if (await testCallback(current[newKey], `${currentPath}/${lastKey}`)) {
                    current[newKey] = await throttle(transform)(current[newKey], `${currentPath}/${lastKey}`);
                }
            }
            else if (typeof current[newKey] === 'object' && current[newKey] !== null) {
                await transformObject(current[newKey], transform, '$.*', throttleDelay, concurrentTasks, errorCallback, testCallback);
            }
        }
        catch (error) {
            errorCallback(currentPath, lastKey, error);
        }
    }
}
const exampleTransformFunction = async (input, path) => {
    if (input === 'random')
        throw new Error('API error');
    return input.toUpperCase();
};
export const defaultError = (path, value, error) => {
    // logger.error(`Error at path: ${path}, value: ${value}, error: ${error}`)
};
export const defaultOptions = (options = {}) => {
    return {
        transform: exampleTransformFunction,
        path: options.path || '$[*][0,1,2]',
        throttleDelay: 10,
        concurrentTasks: 1,
        errorCallback: defaultError,
        filterCallback: testFilters(defaultFilters()),
        ...options
    };
};
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