import queryString from "query-string";
import { fetchPolyfill } from "../libs/fetch";
import {
  OPT_TRANS_GOOGLE,
  OPT_TRANS_MICROSOFT,
  OPT_TRANS_DEEPL,
  OPT_TRANS_OPENAI,
  OPT_TRANS_CUSTOMIZE,
  OPT_LANGS_SPECIAL,
  PROMPT_PLACE_FROM,
  PROMPT_PLACE_TO,
  KV_SALT_SYNC,
} from "../config";
import { tryDetectLang } from "../libs";
import { sha256 } from "../libs/utils";

/**
 * 同步数据
 * @param {*} url
 * @param {*} key
 * @param {*} data
 * @returns
 */
export const apiSyncData = async (url, key, data, isBg = false) =>
  fetchPolyfill(url, {
    headers: {
      "Content-type": "application/json",
      Authorization: `Bearer ${await sha256(key, KV_SALT_SYNC)}`,
    },
    method: "POST",
    body: JSON.stringify(data),
    isBg,
  });

/**
 * 下载数据
 * @param {*} url
 * @param {*} isBg
 * @returns
 */
export const apiFetch = (url, isBg = false) => fetchPolyfill(url, { isBg });

/**
 * 谷歌翻译
 * @param {*} text
 * @param {*} to
 * @param {*} from
 * @returns
 */
const apiGoogleTranslate = async (
  translator,
  text,
  to,
  from,
  { url, key, useCache = true }
) => {
  const params = {
    client: "gtx",
    dt: "t",
    dj: 1,
    ie: "UTF-8",
    sl: from,
    tl: to,
    q: text,
  };
  const input = `${url}?${queryString.stringify(params)}`;
  const res = await fetchPolyfill(input, {
    headers: {
      "Content-type": "application/json",
    },
    useCache,
    usePool: true,
    translator,
    token: key,
  });
  const trText = res.sentences.map((item) => item.trans).join(" ");
  const isSame = to === res.src;

  return [trText, isSame];
};

/**
 * 微软翻译
 * @param {*} text
 * @param {*} to
 * @param {*} from
 * @returns
 */
const apiMicrosoftTranslate = async (
  translator,
  text,
  to,
  from,
  { url, useCache = true }
) => {
  const params = {
    from,
    to,
    "api-version": "3.0",
  };
  const input = `${url}?${queryString.stringify(params)}`;
  const res = await fetchPolyfill(input, {
    headers: {
      "Content-type": "application/json",
    },
    method: "POST",
    body: JSON.stringify([{ Text: text }]),
    useCache,
    usePool: true,
    translator,
  });
  const trText = res[0].translations[0].text;
  const isSame = to === res[0].detectedLanguage?.language;

  return [trText, isSame];
};

/**
 * DeepL翻译
 * @param {*} text
 * @param {*} to
 * @param {*} from
 * @returns
 */
const apiDeepLTranslate = async (
  translator,
  text,
  to,
  from,
  { url, key, useCache = true }
) => {
  const data = {
    text: [text],
    target_lang: to,
    split_sentences: "0",
  };
  if (from) {
    data.source_lang = from;
  }
  const res = await fetchPolyfill(url, {
    headers: {
      "Content-type": "application/json",
    },
    method: "POST",
    body: JSON.stringify(data),
    useCache,
    usePool: true,
    translator,
    token: key,
  });
  const trText = res.translations.map((item) => item.text).join(" ");
  const isSame = to === res.translations[0].detected_source_language;

  return [trText, isSame];
};

/**
 * OpenAI 翻译
 * @param {*} text
 * @param {*} to
 * @param {*} from
 * @returns
 */
const apiOpenaiTranslate = async (
  translator,
  text,
  to,
  from,
  { url, key, model, prompt, useCache = true }
) => {
  prompt = prompt
    .replaceAll(PROMPT_PLACE_FROM, from)
    .replaceAll(PROMPT_PLACE_TO, to);
  const res = await fetchPolyfill(url, {
    headers: {
      "Content-type": "application/json",
    },
    method: "POST",
    body: JSON.stringify({
      model: model,
      messages: [
        {
          role: "system",
          content: prompt,
        },
        {
          role: "user",
          content: text,
        },
      ],
      temperature: 0,
      max_tokens: 256,
    }),
    useCache,
    usePool: true,
    translator,
    token: key,
  });
  const trText = res?.choices?.[0].message.content;
  const sLang = await tryDetectLang(text);
  const tLang = await tryDetectLang(trText);
  const isSame = text === trText || (sLang && tLang && sLang === tLang);

  return [trText, isSame];
};

/**
 * 自定义接口 翻译
 * @param {*} text
 * @param {*} to
 * @param {*} from
 * @returns
 */
const apiCustomTranslate = async (
  translator,
  text,
  to,
  from,
  { url, key, useCache = true }
) => {
  const res = await fetchPolyfill(url, {
    headers: {
      "Content-type": "application/json",
    },
    method: "POST",
    body: JSON.stringify({
      text,
      from,
      to,
    }),
    useCache,
    usePool: true,
    translator,
    token: key,
  });
  const trText = res.text;
  const isSame = to === res.from;

  return [trText, isSame];
};

/**
 * 统一翻译接口
 * @param {*} param0
 * @returns
 */
export const apiTranslate = ({
  translator,
  text,
  fromLang,
  toLang,
  apiSetting,
}) => {
  const from = OPT_LANGS_SPECIAL[translator]?.get(fromLang) ?? fromLang;
  const to = OPT_LANGS_SPECIAL[translator]?.get(toLang) ?? toLang;
  const callApi = (api) => api(translator, text, to, from, apiSetting);

  switch (translator) {
    case OPT_TRANS_GOOGLE:
      return callApi(apiGoogleTranslate);
    case OPT_TRANS_MICROSOFT:
      return callApi(apiMicrosoftTranslate);
    case OPT_TRANS_DEEPL:
      return callApi(apiDeepLTranslate);
    case OPT_TRANS_OPENAI:
      return callApi(apiOpenaiTranslate);
    case OPT_TRANS_CUSTOMIZE:
      return callApi(apiCustomTranslate);
    default:
      return ["", false];
  }
};