// import Vue from 'vue'
import store from '../../store'
// import en from '../../locale/en.json'
import {currentLang} from '@/components/lang'
var _currentLang = currentLang();
let app;

function $ts(key, toLower) {//是否将后面的所有文字转小写
	if (key === undefined || key === null) {
		return '';
	}
	if (Array.isArray(key)) {
		return ts_arr(key, toLower);
	}
	if (_currentLang == "zh-cn"){
		return key;
	}

	return store.getters.local()[key] || key;
}
//按模板翻译，如：'值只能在[{$ts}]'
function $tst(key, templateVal) {
	if (key === undefined || key === null) {
		return '';
	}
	//替换模板
	return $ts(key).replace('{$ts}', templateVal);
}
let ts_arr = function (arr, toLower) {
	if (_currentLang == "zh-cn") return arr.join('');
	let ts_string = '';
	for (let index = 0; index < arr.length; index++) {
		//toLower除了第一个，其他转小写
		if (toLower) {
			ts_string = ts_string + " " + ((store.getters.local()[arr[index]] || arr[index]).toLocaleLowerCase());
		} else {
			ts_string = ts_string + " " + (store.getters.local()[arr[index]] || arr[index]);
		}
	}
	return ts_string;
};
function $loadSource() {
	let langType = localStorage.getItem(lang_storage_key);
	if (!langType) {
		// if (navigator.language == "zh-cn") {
			langType = "zh-cn";
		// } else {
		// 	langType = "en";
		// }
	}

	$changeSource(langType, true);
}

function $changeSource(langType, isInit, source) {
	if (_currentLang == langType && !isInit) {
		return;
	}
	_currentLang = langType;
	// switch (_currentLang) {
	// 	case "zh-cn":
	// 		source = { "登录": "登录" }; //中文
	// 		break;
	// 	case 'en':
	// 		source = en; //捷克语
	// 		break;
	// 	default:
	// 		source = en; //其他的默认英语
	// 		break;
	// }
	localStorage.setItem(lang_storage_key, langType);

	app.config.globalProperties.isCN = _currentLang == 'zh-cn';
	//store.commit("setLocal", source);
}
import http from "@/../src/api/http.js";

function loadLangScript () {
    if (_currentLang== 'zh-cn') {
        return
    }

    window.global_lang = {}
    http.ajax({
        url: 'lang/' + _currentLang + '.js?' + Math.random(),
        json: false,
        type: 'get',
        headers: { Authorization: "" },
        async: false,
        success: function (_lang) {
			store.commit("setLocal", JSON.parse(_lang));
            // var _script = document.createElement('script')
            // _script.language = 'javascript'
            // _script.type = 'text/javascript'
            // try {
            //     _script.appendChild(document.createTextNode(_lang))
            //     document.head.appendChild(_script)
            // } catch (ex) {
            //     alert('Load language error')
            // }
        }
    })
}
export default {
	init(_app) {
		loadLangScript();
		app = _app;
		app.config.globalProperties.$ts = $ts;
		app.config.globalProperties.$tst = $tst;
		$loadSource();
		app.config.globalProperties.$changeSource = $changeSource;
	}
	
}