// TODO: Index should likely show the index for the current location if it also contains a directory
var fs = require('fs');
module.exports = function(qwiki) {
  qwiki.rule('index', '@@CONTENT@@', function(req, res, instance, next) {
    var path = 'wiki/'+req.area;
    qwiki.readDirectory(path, function(err, files) {
      if (err) {
        console.log('err: ' + err);
        if (err.errno == -2) { // ENOENT
          res.write('Cannot index "' + req.area + '" as it does not exist'); // FIXME: do actual errors
        }
        res.write('Error: ' + err);
        next();
        return;
      }
      files.sort(function(a, b) {
        if (a.is_dir == true && b.is_dir == false) return -1;
        else if (a.is_dir == false && b.is_dir == true) return 1;
        else if (a.is_dir == false && b.is_dir == false) {
          var a_ext = qwiki.getExt(a.name);
          var b_ext = qwiki.getExt(b.name);
          if (a_ext == 'qwk' && b_ext != 'qwk') return -1;
          if (a_ext != 'qwk' && b_ext == 'qwk') return 1;
          else return 0;
        } else {
          return 0;
        }
      });
      /*files.sort(function(a, b) {
        var a_ext = qwiki.getExt(a.name);
        var b_ext = qwiki.getExt(b.name);
        if (a_ext == 'qwk' && b_ext != 'qwk') return -1;
        if (a_ext != 'qwk' && b_ext == 'qwk') return 1;
        else return 0;
      });*/
     res.write('<h2>Index of '+req.area+'</h2>');
     res.write('<ul id="act_index">')
     if (req.area != '') {
       res.write('<li><a class="file_dir" href="'+req.area+'/../index">..</a></li>');
     }
     for (var file in files) {
       var name = '';
       res.write('<li>');
       if (qwiki.getExt(files[file].name) == 'qwk') {
         name = files[file].name.slice(0, -4);
         res.write('<a class="file_qwk" href="'+req.area+'/'+name+'">'+name+'</a>');
       } else {
         name = files[file].name;
         if (files[file].is_dir) {
           res.write('<a class="file_dir" href="'+req.area+'/'+name+'/index">'+name+'/</a>');
         } else {
           res.write('<a class="file_other" href="'+req.area+'/'+name+'">'+name+'</a>');
         }
       }
       res.write('</li>');
     }
     res.write('</ul>');
     next();
    });
  });
  qwiki.rule('index', '@@CONTROLS@@', function(req, res, instance, next) {
    res.write('<li><a href="'+(req.area == '' ? '/' : req.area)+'"><img src="/view.png">View</a></li><li><a href="'+req.area+'/upload"><img src="/upload.png">Upload</a></li>');
    next();
  });
  qwiki.act('index', function(req, res) {
    res.writeHead(200, "OK", {
      "Content-Type": "text/html",
    });
    qwiki.parsePage('index', '', req, res);
  });
};