import { deepAssign, fromEntries } from '../../shared/index.js';
import { Logger } from '../utils/index.js';
/**
 * Get locale info
 *
 * 获取本地化信息
 *
 * @param app - VuePress App / VuePress 应用
 * @param logger - Logger / 日志记录器
 *
 * @returns Array of locale path and language pairs / 本地化路径和语言对的数组
 */
export const getLocaleInfo = (app, logger) => {
    const localeEntries = Object.entries(app.options.locales);
    if (!localeEntries.length)
        return [['/', app.options.lang]];
    return localeEntries.map(([path, { lang }]) => {
        if (lang)
            return [path, lang];
        if (app.options.debug) {
            ;
            (logger ?? console).warn(`Locale ${path} is missing lang config, fallback to root lang ${app.options.lang}`);
        }
        return [path, app.options.lang];
    });
};
export const getLocaleData = (info, lang, logger) => {
    const isShortLang = !lang.includes('-');
    // full search
    const localeData = info.find(([langs]) => langs.includes(lang));
    // find exact match
    if (localeData)
        return localeData[1];
    if (!isShortLang) {
        // find short lang match
        const shortLang = lang.split('-')[0];
        const shortLocaleData = info.find(([langs]) => langs.includes(shortLang));
        if (shortLocaleData)
            return shortLocaleData[1];
    }
    ;
    (logger ?? console).warn(`${lang} is missing it's i18n config`);
    return (
    // en-US
    (info.find(([langs]) => langs.includes('en-US')) ??
        // en
        info.find(([langs]) => langs.some((item) => item.startsWith('en'))) ??
        // first one
        info[0])[1]);
};
/**
 * Get final locale config for client
 *
 * 获取客户端的最终本地化配置
 *
 * @param options - Configuration options / 配置选项
 *
 * @returns Final locale config / 最终本地化配置
 */
export const getFullLocaleConfig = ({ app, name, default: defaultLocaleData, config: userLocalesConfig = {}, }) => {
    const logger = new Logger(name);
    const localeInfo = getLocaleInfo(app, logger);
    return fromEntries(localeInfo.map(([localePath, lang]) => [
        localePath,
        deepAssign({}, getLocaleData(defaultLocaleData, lang, logger), (userLocalesConfig[localePath] ?? {})),
    ]));
};