const cached = require('gulp-cached');

const list = {
  get totalIssue() {
    return this.totalError + this.totalWarning;
  },
};
exports.list = list;

function pushError(info) {
  list.data.push(info);
  list[info.type === 'Error' ? 'totalError' : 'totalWarning'] += 1;
}

function handleError({ plugin, message, codeFrame = '' } = {}) {
  pushError({
    type: 'Error',
    plugin: plugin.toUpperCase(),
    message: message.trim(),
    code: codeFrame,
  });

  if (typeof this.emit === 'function') {
    this.emit('end');
  } else if (typeof this === 'function') {
    this();
  }
}

exports.handleError = handleError;

exports.handleESLintError = (results) => {
  results.forEach(({ filePath, messages } = {}) => {
    messages.forEach(({
      severity, line, column, message,
    } = {}) => {
      const type = severity === 2 ? 'Error' : 'Warning';

      pushError({
        type,
        plugin: `ES Lint ${type}`,
        message: filePath,
        code: `[${line}:${column}] ${message}`,
      });
    });
  });

  list.isJSValid = !results.errorCount;

  if (results.errorCount || results.warningCount) {
    delete cached.caches.eslint;
  }
};

function resetError() {
  list.data = [];
  list.totalError = 0;
  list.totalWarning = 0;
  list.isJSValid = true;
}
exports.resetError = resetError;

resetError();