// TODO: deletions should check to see if they were the last file in a directory, and if so, to delete the parent folder and redirect to the parent view
// TODO: additionally, deletions should work on generic files and even directories!
var fs = require('fs');
var path = require('path');
module.exports = function(qwiki) {
  // **** DELETE
  qwiki.rule('delete', '@@CONTENT@@', function(req, res, instance, next) {
    res.write('<form action="" method="POST"> Deleting this page will also delete all page revisions! Are you sure you wish to do this?<div class="prompt"><input type="submit" name="submit" value="Yes"><input type="submit" name="submit" value="No"></div></form>');
    next()
  });
  qwiki.act('delete', function(req, res) {
    var area = (req.url == '' ? 'front' : req.url.substr(1));
    // handle POST
    if ('submit' in req.fields) {
      if (req.fields['submit'] == 'Yes') {
        fs.stat('wiki/'+area+'.qwk', function(err, stat) {
          if (err == null) {
            qwiki.deletePage(area, function() {
              qwiki.deleteCache(area, function() {
                console.log('redirecting to '+req.url);
                res.writeHead(302, {'Location': req.url});
                res.end();
              });
            });
          } else if (err.code == 'ENOENT') {
            // does not exist as a wiki document, it's a directory or a file
            fs.stat('wiki/'+area, function(err, stat) {
              if (err == null) {
                if (stat.isDirectory()) {
                  console.log('request to delete directory');
                } else {
                  fs.unlink('wiki/'+area, function(err) {
                    console.log('deleted file: ' + area);
                  });
                }
              } else if (err.code == 'ENOENT') {
                console.log('file "' + area + '" does not exist');
              } else {
                console.log(err);
              }
            });
            res.writeHead(302, {'Location': '../index'});
            res.end();
          } else {
            console.log(err);
            res.writeHead(302, {'Location': '../index'});
            res.end();
          }
        });
        return;
      } else {
          res.writeHead(302, {'Location': req.url+'/edit'});
          res.end();
      }
    } else {
      res.writeHead(200, "OK", {
        "Content-Type": "text/html",
      });
    }
    qwiki.parsePage('delete', 'edit', req, res);
  });
}