'use strict';

const path = require('path'); const ansi = require('ansi-colors'); const debug = require('debug')('mocha:cli:run:helpers'); const minimatch = require('minimatch'); const utils = require('../utils');

/**

* Exports a function that collects test files from CLI parameters.
* @see module:lib/cli/run-helpers
* @see module:lib/cli/watch-run
* @module
* @private
*/

/**

* Smash together an array of test files in the correct order
* @param {Object} opts - Options
* @param {string[]} opts.extension - File extensions to use
* @param {string[]} opts.spec - Files, dirs, globs to run
* @param {string[]} opts.ignore - Files, dirs, globs to ignore
* @param {string[]} opts.file - List of additional files to include
* @param {boolean} opts.recursive - Find files recursively
* @param {boolean} opts.sort - Sort test files
* @returns {string[]} List of files to test
* @private
*/

module.exports = ({ignore, extension, file, recursive, sort, spec} = {}) => {

let files = [];
const unmatched = [];
spec.forEach(arg => {
  let newFiles;
  try {
    newFiles = utils.lookupFiles(arg, extension, recursive);
  } catch (err) {
    if (err.code === 'ERR_MOCHA_NO_FILES_MATCH_PATTERN') {
      unmatched.push({message: err.message, pattern: err.pattern});
      return;
    }

    throw err;
  }

  if (typeof newFiles !== 'undefined') {
    if (typeof newFiles === 'string') {
      newFiles = [newFiles];
    }
    newFiles = newFiles.filter(fileName =>
      ignore.every(pattern => !minimatch(fileName, pattern))
    );
  }

  files = files.concat(newFiles);
});

const fileArgs = file.map(filepath => path.resolve(filepath));
files = files.map(filepath => path.resolve(filepath));

// ensure we don't sort the stuff from fileArgs; order is important!
if (sort) {
  files.sort();
}

// add files given through --file to be ran first
files = fileArgs.concat(files);
debug('files (in order): ', files);

if (!files.length) {
  // give full message details when only 1 file is missing
  const noneFoundMsg =
    unmatched.length === 1
      ? `Error: No test files found: ${JSON.stringify(unmatched[0].pattern)}` // stringify to print escaped characters raw
      : 'Error: No test files found';
  console.error(ansi.red(noneFoundMsg));
  process.exit(1);
} else {
  // print messages as an warning
  unmatched.forEach(warning => {
    console.warn(ansi.yellow(`Warning: ${warning.message}`));
  });
}

return files;

};