/*	$Id$ */
/*
 * Copyright (c) 2016 Kristaps Dzonsons <kristaps@bsd.lv>
 *
 * Permission to use, copy, modify, and distribute this software for any
 * purpose with or without fee is hereby granted, provided that the above
 * copyright notice and this permission notice appear in all copies.
 *
 * THE SOFTWARE IS PROVIDED "AS IS" AND THE AUTHOR DISCLAIMS ALL WARRANTIES
 * WITH REGARD TO THIS SOFTWARE INCLUDING ALL IMPLIED WARRANTIES OF
 * MERCHANTABILITY AND FITNESS. IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR
 * ANY SPECIAL, DIRECT, INDIRECT, OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES
 * WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR PROFITS, WHETHER IN AN
 * ACTION OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION, ARISING OUT OF
 * OR IN CONNECTION WITH THE USE OR PERFORMANCE OF THIS SOFTWARE.
 */
(function(root) {
	'use strict';

	/*
	 * Send a GET query to the give url.
	 * Invokes "setup" before running anything, "error" upon network
	 * error (with the HTTP error code and response text), and
	 * success with the response text on 200.
	 */
	function sendQuery(url, setup, error, success) 
	{
		var xmh = new XMLHttpRequest();
		var v;

		if (null !== setup)
			setup();

		xmh.onreadystatechange = function() {
			v = xmh.responseText;
			if (xmh.readyState === 4 && 
			    xmh.status === 200) {
				if (null !== success)
					success(v);
			} else if (xmh.readyState === 4) {
				if (null !== error)
					error(xmh.status, v);
			}
		};

		xmh.open('GET', url, true);
		xmh.send(null);
	}

	/*
	 * Send a POST query to the give url with the form.
	 * Invokes "setup" before running anything (given the form),
	 * "error" upon network error (with the form, HTTP error code,
	 * and response text), and success with the form and response
	 * text on 200.
	 */
	function sendForm(form, setup, error, success) 
	{
		var xmh = new XMLHttpRequest();
		var v;

		if (null !== setup)
			setup(form);

		xmh.onreadystatechange=function() {
			v = xmh.responseText;
			if (xmh.readyState === 4 && 
			    xmh.status === 200) {
				if (null !== success)
					success(form, v);
			} else if (xmh.readyState === 4) {
				if (null !== error)
					error(form, xmh.status, v);
			}
		};

		xmh.open(form.method, form.action, true);
		xmh.send(new FormData(form));
		return(false);
	}

  function stdError(code, resp) {
    console.log("ERREUR " + code + ": " + resp);
  }

  function indexSuccess(resp) {
    var res;

    try  { 
      res = JSON.parse(resp);
    } catch (error) {
      console.log('JSON parse fail: ' + resp);
      return(null);
    }
    app.message = res.length + " books";
  }

	/*
	 * Configure the index page.
	 */
	function loadIndex()
	{
		sendQuery('cgi-bin/bouquins/books', 
			null, stdError, indexSuccess);
	}

	root.loadIndex = loadIndex;
})(this);

document.addEventListener('DOMContentLoaded', function() {
	loadIndex();
});
var app = new Vue({
  el: '#app',
  data: {
    message: 'Hello Vue!'
  }
})