'use strict';

function isDirectoryIndex(resource, options) {
  var verdict = false;

  options.directoryIndexes.every(function (index) {
    if (index === resource) {
      verdict = true;
      return false;
    }

    return true;
  });

  return verdict;
}

function parsePath(urlObj, options) {
  var path = urlObj.path.absolute.string;

  if (path) {
    var lastSlash = path.lastIndexOf('/');

    if (lastSlash > -1) {
      if (++lastSlash < path.length) {
        var resource = path.substr(lastSlash);

        if (resource !== '.' && resource !== '..') {
          urlObj.resource = resource;
          path = path.substr(0, lastSlash);
        } else {
          path += '/';
        }
      }

      urlObj.path.absolute.string = path;
      urlObj.path.absolute.array = splitPath(path);
    } else if (path === '.' || path === '..') {
      // "..?var", "..#anchor", etc ... not "..index.html"
      path += '/';

      urlObj.path.absolute.string = path;
      urlObj.path.absolute.array = splitPath(path);
    } else {
      // Resource-only
      urlObj.resource = path;
      urlObj.path.absolute.string = null;
    }

    urlObj.extra.resourceIsIndex = isDirectoryIndex(urlObj.resource, options);
  }
  // Else: query/hash-only or empty
}

function splitPath(path) {
  // TWEAK :: condition only for speed optimization
  if (path !== '/') {
    var cleaned = [];

    path.split('/').forEach(function (dir) {
      // Cleanup -- splitting "/dir/" becomes ["","dir",""]
      if (dir !== '') {
        cleaned.push(dir);
      }
    });

    return cleaned;
  } else {
    // Faster to skip the above block and just create an array
    return [];
  }
}

module.exports = parsePath;