99 lines
2.9 KiB
JavaScript
99 lines
2.9 KiB
JavaScript
import log from "loglevel";
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let translationHistory = [];
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const logDir = "common/translate";
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const getHistory = (sourceWord, sourceLang, targetLang) => {
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const history = translationHistory.find(
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history =>
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history.sourceWord == sourceWord &&
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history.sourceLang == sourceLang &&
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history.targetLang == targetLang &&
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history.result.statusText == "OK"
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);
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return history;
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};
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const setHistory = (sourceWord, sourceLang, targetLang, formattedResult) => {
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translationHistory.push({
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sourceWord: sourceWord,
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sourceLang: sourceLang,
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targetLang: targetLang,
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result: formattedResult
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});
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};
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const sendRequest = (word, sourceLang, targetLang) => {
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log.log(logDir, "sendRequest()");
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const url = `https://translate.googleapis.com/translate_a/single?client=gtx&sl=${sourceLang}&tl=${targetLang}&dt=t&dt=bd&dj=1&q=${encodeURIComponent(
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word
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)}`;
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const xhr = new XMLHttpRequest();
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xhr.responseType = "json";
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xhr.open("GET", url);
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xhr.send();
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return new Promise((resolve, reject) => {
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xhr.onload = () => {
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resolve(xhr);
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};
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xhr.onerror = () => {
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resolve(xhr);
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};
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});
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};
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const formatResult = result => {
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const resultData = {
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resultText: "",
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candidateText: "",
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sourceLanguage: "",
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percentage: 0,
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statusText: ""
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};
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if (result.status === 0) resultData.statusText = "Network Error";
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else if (result.status === 200) resultData.statusText = "OK";
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else if (result.status === 429) resultData.statusText = "Service Unavailable";
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else if (result.status === 503) resultData.statusText = "Service Unavailable";
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else resultData.statusText = result.statusText || result.status;
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if (resultData.statusText !== "OK") {
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log.error(logDir, "formatResult()", resultData);
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return resultData;
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}
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resultData.sourceLanguage = result.response.src;
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resultData.percentage = result.response.ld_result.srclangs_confidences[0];
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resultData.resultText = result.response.sentences.map(sentence => sentence.trans).join("");
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if (result.response.dict) {
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resultData.candidateText = result.response.dict
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.map(dict => `${dict.pos}${dict.pos != "" ? ": " : ""}${dict.terms.join(", ")}\n`)
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.join("");
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}
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log.log(logDir, "formatResult()", resultData);
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return resultData;
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};
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export default async (sourceWord, sourceLang = "auto", targetLang) => {
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log.log(logDir, "tranlate()", sourceWord, targetLang);
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sourceWord = sourceWord.trim();
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if (sourceWord === "")
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return {
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resultText: "",
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candidateText: "",
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sourceLanguage: "en",
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percentage: 0,
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statusText: "OK"
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};
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const history = getHistory(sourceWord, sourceLang, targetLang);
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if (history) return history.result;
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const result = await sendRequest(sourceWord, sourceLang, targetLang);
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const formattedResult = formatResult(result);
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setHistory(sourceWord, sourceLang, targetLang, formattedResult);
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return formattedResult;
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};
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