/**
 * --------------------------------------------------------------------------
 * Bootstrap (v5.1.3): dom/selector-engine.js
 * Licensed under MIT (https://github.com/twbs/bootstrap/blob/main/LICENSE)
 * --------------------------------------------------------------------------
 */

/**
 * ------------------------------------------------------------------------
 * Constants
 * ------------------------------------------------------------------------
 */

import {isDisabled, isVisible} from '../util/index'

const NODE_TEXT = 3

const SelectorEngine = {
    find(selector, element = document.documentElement) {
        return [].concat(...Element.prototype.querySelectorAll.call(element, selector))
    },

    findOne(selector, element = document.documentElement) {
        return Element.prototype.querySelector.call(element, selector)
    },

    children(element, selector) {
        return [].concat(...element.children)
            .filter(child => child.matches(selector))
    },

    parents(element, selector) {
        const parents = []

        let ancestor = element.parentNode

        while (ancestor && ancestor.nodeType === Node.ELEMENT_NODE && ancestor.nodeType !== NODE_TEXT) {
            if (ancestor.matches(selector)) {
                parents.push(ancestor)
            }

            ancestor = ancestor.parentNode
        }

        return parents
    },

    prev(element, selector) {
        let previous = element.previousElementSibling

        while (previous) {
            if (previous.matches(selector)) {
                return [previous]
            }

            previous = previous.previousElementSibling
        }

        return []
    },

    next(element, selector) {
        let next = element.nextElementSibling

        while (next) {
            if (next.matches(selector)) {
                return [next]
            }

            next = next.nextElementSibling
        }

        return []
    },

    focusableChildren(element) {
        const focusables = [
            'a',
            'button',
            'input',
            'textarea',
            'select',
            'details',
            '[tabindex]',
            '[contenteditable="true"]'
        ].map(selector => `${selector}:not([tabindex^="-"])`).join(', ')

        return this.find(focusables, element).filter(el => !isDisabled(el) && isVisible(el))
    }
}

export default SelectorEngine
