var walkdir = require('walkdir');
var path = require('path');
var fs = require('fs');
var specs;

var createSpecObj = function(path, root) {
  return {
    path: function() { return path; },
    relativePath: function() { return path.replace(root, '').replace(/^[\/\\]/, '').replace(/\\/g, '/'); },
    directory: function() { return path.replace(/[\/\\][\s\w\.-]*$/, "").replace(/\\/g, '/'); },
    relativeDirectory: function() { return relativePath().replace(/[\/\\][\s\w\.-]*$/, "").replace(/\\/g, '/'); },
    filename: function() { return path.replace(/^.*[\\\/]/, ''); }
  };
};

exports.load = function(loadpaths, matcher) {
  var wannaBeSpecs = []
  specs = [];
  loadpaths.forEach(function(loadpath){
    wannaBeSpecs = walkdir.sync(loadpath, { follow_symlinks: true });
    for (var i = 0; i < wannaBeSpecs.length; i++) {
      var file = wannaBeSpecs[i];
      try {
        if (fs.statSync(file).isFile()) {
          if (!/.*node_modules.*/.test(path.relative(loadpath, file)) &
              matcher.test(path.basename(file))) {
            specs.push(createSpecObj(file));
          }
        }
      } catch(e) {
        // nothing to do here
      }
    }
  });
};

exports.getSpecs = function() {
  // Sorts spec paths in ascending alphabetical order to be able to
  // run tests in a deterministic order.
  specs.sort(function(a, b) {
    return a.path().localeCompare(b.path());
  });
  return specs;
};