var QWiki = require('./QWiki/index.js');
var chokidar = require('chokidar');
var fs = require('fs');
var path = require('path');

var port = 8089;
process.argv.forEach(function (val, index, array) {
  var parts = val.split('=');
  var key = '';
  var value = '';
  if (parts[0].substr(0, 2) == '--') {
    key = parts[0].substr(2);
    value = parts[1];
  }
  if (key == 'port') {
    if (value == '') {
      console.log(key + ' needs a value');
    } else {
      port = Number(value);
    }
  }
});

var qwiki = new QWiki();

qwiki.addMIMEtype('png', 'image/png');
qwiki.addMIMEtype('jpg', 'image/jpg');
qwiki.addMIMEtype('svg', 'image/svg+xml');
qwiki.addMIMEtype('html', 'text/html');
qwiki.addMIMEtype('css', 'text/css');

var m_markdownit = require('markdown-it')({
  typographer: true
});
m_markdownit.use(require('markdown-it-anchor'));
m_markdownit.use(require('markdown-it-table-of-contents'), {includeLevel: "2-8"});
m_markdownit.use(require('markdown-it-deflist'));
m_markdownit.use(require('markdown-it-header-sections'));
m_markdownit.use(require('markdown-it-sup'));
qwiki.addFormat('md', 'Markdown', function(source) {
  // source is a Buffer, but render seems to need a String
  return m_markdownit.render(source.toString());
});

qwiki.setDefault('format', 'md');

function updateQat(index) {
  if (index < 0 || index >= qwiki.qats.length);
  fs.readFile(qwiki.qats[index].path, function(err, data) {
    if (err) throw err;
    qwiki.qats[index].source = data.toString();
    qwiki.qats[index].render = m_markdownit.render(qwiki.qats[index].source);
  });
};

function updateUpdate(index) {
  if (index < 0 || index >= qwiki.updates.length);
  fs.readFile(qwiki.updates[index].path, function(err, data) {
    if (err) throw err;
    var filename = path.basename(qwiki.updates[index].path);
    filename = filename.substr(0, filename.lastIndexOf('.'));
    var parts = filename.split('_', 2);
    qwiki.updates[index].date = (parts.length > 0 ? parts[0] : '');
    qwiki.updates[index].time = (parts.length > 1 ? parts[1].replace(/-/g, ':') : '');
    qwiki.updates[index].source = data.toString();
    qwiki.updates[index].render = m_markdownit.render(qwiki.updates[index].source);
  });
};

function updateArticles(path) {
  fs.readFile(path, function(err, data) {
    if (err) throw err;
    qwiki.articles = JSON.parse(data);
  });
};

function updateSoftware(path) {
  fs.readFile(path, function(err, data) {
    if (err) throw err;
    qwiki.softwares = JSON.parse(data);
  });
};

function updateListing(name, path) {
  fs.readFile(path, function(err, data) {
    if (err) throw err;
    qwiki.listings[name] = JSON.parse(data);
  });
};

qwiki.listen(port, function() {
  console.log('Watching wiki/qat');
  qwiki.qats = [];
  chokidar.watch('wiki/qat/', {}).on('all', function(event, path) {
    if (event == 'add') {
      var qat = { path: path, source: '', render: '' };
      qwiki.qats.push(qat);
      updateQat(qwiki.qats.length-1);
    } else if (event == 'unlink') {
      for (var i = 0, len = qwiki.qats.length; i < len; i++) {
        if (qwiki.qats[i].path == path) {
          qwiki.qats.splice(i, 1);
          break;
        }
      }
    } else if (event == 'change') {
      var qat;
      for (var i = 0, len = qwiki.qats.length; i < len; i++) {
        if (qwiki.qats[i].path == path) {
          qat = qwiki.qats[i];
          updateQat(i);
          break;
        }
      }
    }
  });

  console.log('Watching wiki/updates');
  qwiki.updates = [];
  chokidar.watch('wiki/updates/', {}).on('all', function(event, path) {
    if (event == 'add') {
      var update = { path: path, source: '', render: '' };
      qwiki.updates.push(update);
      updateUpdate(qwiki.updates.length-1);
    } else if (event == 'unlink') {
      for (var i = 0, len = qwiki.updates.length; i < len; i++) {
        if (qwiki.updates[i].path == path) {
          qwiki.updates.splice(i, 1);
          break;
        }
      }
    } else if (event == 'change') {
      var update;
      for (var i = 0, len = qwiki.updates.length; i < len; i++) {
        if (qwiki.updates[i].path == path) {
          update = qwiki.updates[i];
          updateUpdate(i);
          break;
        }
      }
    }
  });
  console.log('Watching wiki/articles.json');
  qwiki.listings = {};
  chokidar.watch('wiki/articles.json', {}).on('all', function(event, path) {
    if (event == 'add' || event == 'change') {
      updateListing('articles', path);
    }
  });
});