import CSSRule from '../CSSRule.js';
import DOMExceptionNameEnum from '../../exception/DOMExceptionNameEnum.js';
import * as PropertySymbol from '../../PropertySymbol.js';
/**
 * CSSGroupingRule interface.
 *
 * @see https://developer.mozilla.org/en-US/docs/Web/API/CSSGroupingRule
 */
export default class CSSGroupingRule extends CSSRule {
    [PropertySymbol.cssRules] = [];
    /**
     * Returns CSS rules.
     *
     * @returns CSS rules.
     */
    get cssRules() {
        return this[PropertySymbol.cssRules];
    }
    /**
     * Inserts a new rule.
     *
     * @param rule Rule.
     * @param [index] Index.
     * @returns The index of the new rule.
     */
    insertRule(rule, index) {
        if (arguments.length === 0) {
            throw new this[PropertySymbol.window].TypeError(`Failed to execute 'insertRule' on '${this.constructor.name}': 1 argument required, but only 0 present.`);
        }
        const rules = this[PropertySymbol.cssParser].parseFromString(rule);
        if (rules.length === 0 || rules.length > 1) {
            throw new this[PropertySymbol.window].DOMException(`Failed to execute 'insertRule' on '${this.constructor.name}': Failed to parse the rule '${rule}'.`, DOMExceptionNameEnum.syntaxError);
        }
        if (index !== undefined) {
            index = Number(index);
            if (isNaN(index) || index > this.cssRules.length) {
                throw new this[PropertySymbol.window].DOMException(`Failed to execute 'insertRule' on '${this.constructor.name}': The index provided (${index}) is larger than the maximum index (${this.cssRules.length}).`, DOMExceptionNameEnum.indexSizeError);
            }
            this.cssRules.splice(index, 0, rules[0]);
            return index;
        }
        const newIndex = this.cssRules.length;
        this.cssRules.unshift(rules[0]);
        return newIndex;
    }
    /**
     * Removes a rule.
     *
     * @param index Index.
     */
    deleteRule(index) {
        if (arguments.length === 0) {
            throw new this[PropertySymbol.window].TypeError(`Failed to execute 'deleteRule' on '${this.constructor.name}': 1 argument required, but only 0 present.`);
        }
        index = Number(index);
        if (isNaN(index) || index < 0 || index >= this.cssRules.length) {
            throw new this[PropertySymbol.window].DOMException(`Failed to execute 'deleteRule' on '${this.constructor.name}': the index (${index}) is greater than the length of the rule list.`, DOMExceptionNameEnum.indexSizeError);
        }
        this.cssRules.splice(index, 1);
    }
}
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