"use strict";
Object.defineProperty(exports, "__esModule", { value: true });
exports.parseSelectorPath = void 0;
function ampCount(selector) {
    let cnt = 0;
    for (let i = 0; i < selector.length; ++i) {
        if (selector[i] === '&')
            ++cnt;
    }
    return cnt;
}
/**
 * Don't just use ',' to separate css selector. For example:
 * x:(a, b) {} will be split into 'x:(a' and 'b)', which is not expected.
 * Make sure comma doesn't exist inside parentheses.
 */
const separatorRegex = /\s*,(?![^(]*\))\s*/g;
const extraSpaceRegex = /\s+/g;
/**
 * selector must includes '&'
 * selector is trimmed
 * every part of amp is trimmed
 */
function resolveSelectorWithAmp(amp, selector) {
    const nextAmp = [];
    selector.split(separatorRegex).forEach(partialSelector => {
        let round = ampCount(partialSelector);
        // eslint-disable-next-line @typescript-eslint/strict-boolean-expressions
        if (!round) {
            amp.forEach(partialAmp => {
                nextAmp.push(
                // eslint-disable-next-line @typescript-eslint/strict-boolean-expressions
                (partialAmp && partialAmp + ' ') + partialSelector);
            });
            return;
        }
        else if (round === 1) {
            amp.forEach(partialAmp => {
                nextAmp.push(partialSelector.replace('&', partialAmp));
            });
            return;
        }
        let partialNextAmp = [
            partialSelector
        ];
        // eslint-disable-next-line @typescript-eslint/strict-boolean-expressions
        while (round--) {
            const nextPartialNextAmp = [];
            partialNextAmp.forEach(selectorItr => {
                amp.forEach(partialAmp => {
                    nextPartialNextAmp.push(selectorItr.replace('&', partialAmp));
                });
            });
            partialNextAmp = nextPartialNextAmp;
        }
        partialNextAmp.forEach(part => nextAmp.push(part));
    });
    return nextAmp;
}
/**
 * selector mustn't includes '&'
 * selector is trimmed
 */
function resolveSelector(amp, selector) {
    const nextAmp = [];
    selector.split(separatorRegex).forEach(partialSelector => {
        amp.forEach(partialAmp => {
            // eslint-disable-next-line @typescript-eslint/strict-boolean-expressions
            nextAmp.push(((partialAmp && partialAmp + ' ') + partialSelector));
        });
    });
    return nextAmp;
}
function parseSelectorPath(selectorPaths) {
    let amp = [''];
    selectorPaths.forEach(selector => {
        // eslint-disable-next-line
        selector = selector && selector.trim();
        if (
        // eslint-disable-next-line @typescript-eslint/strict-boolean-expressions
        !selector) {
            /**
             * if it's a empty selector, do nothing
             */
            return;
        }
        // eslint-disable-next-line @typescript-eslint/strict-boolean-expressions
        if (selector.includes('&')) {
            amp = resolveSelectorWithAmp(amp, selector);
        }
        else {
            amp = resolveSelector(amp, selector);
        }
    });
    return amp.join(', ').replace(extraSpaceRegex, ' ');
}
exports.parseSelectorPath = parseSelectorPath;