/* eslint-disable no-restricted-syntax */
/* eslint-disable no-unused-vars */
/* eslint-disable import/no-extraneous-dependencies */
/* eslint-disable no-eval */
const fs = require('fs');
const path = require('path');
const yaml = require('js-yaml');

const name = process.argv[2];

const IGNORE_CHECK = ['en'];
const IGNORE_MISSING = [
  '?', 'AC', 'ID', 'MD5', 'URL',
];
const RE_TEMPLATE = /_\(['"]([\s\S])*?['"]\)/gmi;
const RE_UI = /i18n\(['"]([\s\S])*?['"](,.*?)?\)/gmi;
const TEMPLATE_ROOT = path.resolve(__dirname, '..', 'templates');
const LOCALE_ROOT = path.resolve(__dirname, '..', 'locales');
const texts = {};
const result = {};
const locales = fs.readdirSync(LOCALE_ROOT);
let currentFile = '';

function _(str, format) {
  if (!texts[str]) texts[str] = [currentFile];
  else texts[str].push(currentFile);
}
const i18n = _; // lgtm [js/unused-local-variable]
const Setting = _; // lgtm [js/unused-local-variable]

function scanTemplate(folder, relative = 'templates') {
  const files = fs.readdirSync(folder);
  for (const file of files) {
    const p = path.join(folder, file);
    if (fs.statSync(p).isDirectory()) {
      scanTemplate(p, path.join(relative, file));
    } else {
      currentFile = path.join(relative, file);
      const f = fs.readFileSync(p).toString();
      f.replace(RE_TEMPLATE, (substr) => {
        try {
          // eslint-disable-next-line no-eval
          eval(substr);
        } catch (e) {
          console.error('Cannot parse: ', substr, ' in file ', p);
        }
      });
    }
  }
}
function scanUi(folder, relative = '') {
  const files = fs.readdirSync(folder);
  for (const file of files) {
    const p = path.join(folder, file);
    if (fs.statSync(p).isDirectory()) {
      scanUi(p, path.join(relative, file));
    } else {
      currentFile = path.join(relative, file);
      const f = fs.readFileSync(p).toString();
      f.replace(RE_UI, (substr) => {
        try {
          eval(substr);
        } catch (e) {
          if (e.message.endsWith('is not defined')) {
            global[e.message.split(' ')[0]] = () => { };
            try {
              eval(substr);
            } catch (err) {
              console.error('Cannot parse: ', substr, ' in file ', p);
            }
          } else console.error('Cannot parse: ', substr, ' in file ', p);
        }
      });
    }
  }
}
scanTemplate(TEMPLATE_ROOT);
scanUi(path.join(process.cwd(), 'components'));
scanUi(path.join(process.cwd(), 'pages'));
scanUi(path.join(process.cwd(), 'misc'));
if (!name) {
  for (const locale of locales) {
    if (!IGNORE_CHECK.includes(locale.split('.')[0])) {
      const p = path.join(LOCALE_ROOT, locale);
      const f = fs.readFileSync(p).toString();
      const l = yaml.safeLoad(f);
      for (const str in texts) {
        if (!l[str]) {
          if (result[str]) result[str].locale.push(locale);
          else result[str] = { source: texts[str], locale: [locale] };
        }
      }
    }
  }
} else {
  const p = path.join(LOCALE_ROOT, name);
  const f = fs.readFileSync(p).toString();
  const l = yaml.safeLoad(f);
  for (const str in texts) {
    if (!l[str]) result[str] = texts[str];
  }
}
for (const str of IGNORE_MISSING) delete result[str];
console.log(`${Object.keys(result).length} translations missing.`);
fs.writeFileSync(path.join(__dirname, '..', '__result.json'), JSON.stringify(result, null, 2));
console.log(`Result wrote to ${path.resolve(__dirname, '..', '__result.json')}`);