/*
 * Copyright (C) 2024  Yomitan Authors
 *
 * This program is free software: you can redistribute it and/or modify
 * it under the terms of the GNU General Public License as published by
 * the Free Software Foundation, either version 3 of the License, or
 * (at your option) any later version.
 *
 * This program is distributed in the hope that it will be useful,
 * but WITHOUT ANY WARRANTY; without even the implied warranty of
 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
 * GNU General Public License for more details.
 *
 * You should have received a copy of the GNU General Public License
 * along with this program.  If not, see <https://www.gnu.org/licenses/>.
 */


/**
 * @param {string} inflectedSuffix
 * @param {string} deinflectedSuffix
 * @param {string[]} conditionsIn
 * @param {string[]} conditionsOut
 * @returns {import('language-transformer').SuffixRule}
 */
export function suffixInflection(inflectedSuffix, deinflectedSuffix, conditionsIn, conditionsOut) {
    const suffixRegExp = new RegExp(inflectedSuffix + '$');
    return {
        type: 'suffix',
        isInflected: suffixRegExp,
        deinflected: deinflectedSuffix,
        deinflect: (text) => text.slice(0, -inflectedSuffix.length) + deinflectedSuffix,
        conditionsIn,
        conditionsOut,
    };
}

/**
 * @param {string} inflectedPrefix
 * @param {string} deinflectedPrefix
 * @param {string[]} conditionsIn
 * @param {string[]} conditionsOut
 * @returns {import('language-transformer').Rule}
 */
export function prefixInflection(inflectedPrefix, deinflectedPrefix, conditionsIn, conditionsOut) {
    const prefixRegExp = new RegExp('^' + inflectedPrefix);
    return {
        type: 'prefix',
        isInflected: prefixRegExp,
        deinflect: (text) => deinflectedPrefix + text.slice(inflectedPrefix.length),
        conditionsIn,
        conditionsOut,
    };
}

/**
 * @param {string} inflectedWord
 * @param {string} deinflectedWord
 * @param {string[]} conditionsIn
 * @param {string[]} conditionsOut
 * @returns {import('language-transformer').Rule}
 */
export function wholeWordInflection(inflectedWord, deinflectedWord, conditionsIn, conditionsOut) {
    const regex = new RegExp('^' + inflectedWord + '$');
    return {
        type: 'wholeWord',
        isInflected: regex,
        deinflect: () => deinflectedWord,
        conditionsIn,
        conditionsOut,
    };
}