/*
  Copyright (C) 2005 SKYRIX Software AG
 
  This file is part of OpenGroupware.org.
 
  OGo is free software; you can redistribute it and/or modify it under
  the terms of the GNU Lesser General Public License as published by the
  Free Software Foundation; either version 2, or (at your option) any
  later version.
 
  OGo is distributed in the hope that it will be useful, but WITHOUT ANY
  WARRANTY; without even the implied warranty of MERCHANTABILITY or
  FITNESS FOR A PARTICULAR PURPOSE.  See the GNU Lesser General Public
  License for more details.
 
  You should have received a copy of the GNU Lesser General Public
  License along with OGo; see the file COPYING.  If not, write to the
  Free Software Foundation, 59 Temple Place - Suite 330, Boston, MA
  02111-1307, USA.
*/

var contactSelectorAction = 'calendars-contacts';
var AppointmentEditor = {
 attendeesMenu: null
};

function uixEarlierDate(date1, date2) {
  // can this be done in a sane way?
  if (date1.getYear()  < date2.getYear()) return date1;
  if (date1.getYear()  > date2.getYear()) return date2;
  // same year
  if (date1.getMonth() < date2.getMonth()) return date1;
  if (date1.getMonth() > date2.getMonth()) return date2;
  //   // same month
  if (date1.getDate() < date2.getDate()) return date1;
  if (date1.getDate() > date2.getDate()) return date2;
  // same day
  return null;
}

function validateAptEditor() {
  var e, startdate, enddate, tmpdate;

  e = $('summary');
  if (e.value.length == 0) {
    if (!confirm(labels.validate_notitle))
      return false;
  }

  e = $('startTime_date');
  if (e.value.length != 10) {
    alert(labels.validate_invalid_startdate);
    return false;
  }
  startdate = e.calendar.prs_date(e.value);
  if (startdate == null) {
    alert(labels.validate_invalid_startdate);
    return false;
  }
      
  e = $('endTime_date');
  if (e.value.length != 10) {
    alert(labels.validate_invalid_enddate);
    return false;
  }
  enddate = e.calendar.prs_date(e.value);
  if (enddate == null) {
    alert(labels.validate_invalid_enddate);
    return false;
  }
  tmpdate = uixEarlierDate(startdate, enddate);
  if (tmpdate == enddate) {
    alert(labels.validate_endbeforestart);
    return false;
  }
  else if (tmpdate == null /* means: same date */) {
    // TODO: check time
    var start, end;
    
    start = parseInt(document.forms[0]['startTime_time_hour'].value);
    end = parseInt(document.forms[0]['endTime_time_hour'].value);

    if (start > end) {
      alert(labels.validate_endbeforestart);
      return false;
    }
    else if (start == end) {
      start = parseInt(document.forms[0]['startTime_time_minute'].value);
      end = parseInt(document.forms[0]['endTime_time_minute'].value);
      if (start > end) {
	alert(labels.validate_endbeforestart);
	return false;
      }
    }
  }

  return true;
}

function toggleDetails() {
  var div = $("details");
  var buttons = $("buttons");
  var buttonsHeight = buttons.clientHeight * 3;

  if (div.style.visibility) {
    div.style.visibility = null;
    window.resizeBy(0, -(div.clientHeight + buttonsHeight));
    $("detailsButton").innerHTML = labels["Show Details"];
  } else {
    div.style.visibility = 'visible;';
    window.resizeBy(0, (div.clientHeight + buttonsHeight));
    $("detailsButton").innerHTML = labels["Hide Details"];
  }

  return false;
}

function toggleCycleVisibility(node, nodeName, hiddenValue) {
  var spanNode = $(nodeName);
  var newVisibility = ((node.value == hiddenValue) ? null : 'visible;');
  spanNode.style.visibility = newVisibility;

  if (nodeName == 'cycleSelectionFirstLevel') {
    var otherSpanNode = $('cycleSelectionSecondLevel');
    if (!newVisibility)
      {
        otherSpanNode.superVisibility = otherSpanNode.style.visibility;
        otherSpanNode.style.visibility = null;
      }
    else
      {
        otherSpanNode.style.visibility = otherSpanNode.superVisibility;
        otherSpanNode.superVisibility = null;
      }
  }
}

function onAttendeesMenuPrepareVisibility()
{
  var composeToUndecidedAttendees = $('composeToUndecidedAttendees');
  var attendeesStates = $('attendeesStates').value;
  
  if (attendeesStates.indexOf("needs-action") < 0)
    composeToUndecidedAttendees.addClassName("disabled");
  else
    composeToUndecidedAttendees.removeClassName("disabled");
}

function onComposeToAllAttendees()
{
  var attendees = $$("DIV#attendeesMenu LI.attendee");
  var addresses = new Array();
  attendees.each(function(item) {
      addresses.push(item.readAttribute("email"));
  });
  if (window.opener)
    window.opener.openMailTo(addresses.join(","));
}

function onComposeToUndecidedAttendees()
{
  if ($(this).hasClassName("disabled"))
    return;
 
  var attendees = $$("DIV#attendeesMenu LI.attendee.needs-action");
  var addresses = new Array();
  attendees.each(function(item) {
      addresses.push(item.readAttribute("email"));
  });
  if (window.opener)
    window.opener.openMailTo(addresses.join(","));
}

function addContact(tag, fullContactName, contactId, contactName, contactEmail) {
  var uids = $('uixselector-participants-uidList');

  if (contactId)
    {
      var re = new RegExp("(^|,)" + contactId + "($|,)");

      if (!re.test(uids.value))
        {
          if (uids.value.length > 0)
            uids.value += ',' + contactId;
          else
            uids.value = contactId;

          var names = $('uixselector-participants-display');
          names.innerHTML += ('<li onmousedown="return false;"'
                              + ' onclick="onRowClick(event);"><img src="'
                              + ResourcesURL + '/abcard.gif" />'
                              + contactName + '</li>');
        }
    }

  return false;
}

function saveEvent(sender) {
  if (validateAptEditor())
    document.forms['editform'].submit();

  return false;
}

function startDayAsShortString() {
  return $('startTime_date').valueAsShortDateString();
}

function endDayAsShortString() {
  return $('endTime_date').valueAsShortDateString();
}

function _getDate(which) {
  var date = window.timeWidgets[which]['date'].valueAsDate();
  date.setHours( window.timeWidgets[which]['hour'].value );
  date.setMinutes( window.timeWidgets[which]['minute'].value );

  return date;
}

function _getShadowDate(which) {
  var date = window.timeWidgets[which]['date'].getAttribute("shadow-value").asDate();
  var intValue = parseInt(window.timeWidgets[which]['hour'].getAttribute("shadow-value"));
  date.setHours(intValue);
  intValue = parseInt(window.timeWidgets[which]['minute'].getAttribute("shadow-value"));
  date.setMinutes(intValue);

  return date;
}

function getStartDate() {
  return this._getDate('start');
}

function getEndDate() {
  return this._getDate('end');
}

function getShadowStartDate() {
  return this._getShadowDate('start');
}

function getShadowEndDate() {
  return this._getShadowDate('end');
}

function _setDate(which, newDate) {
  window.timeWidgets[which]['date'].setValueAsDate(newDate);
  window.timeWidgets[which]['hour'].value = newDate.getHours();
  var minutes = newDate.getMinutes();
  if (minutes % 15)
    minutes += (15 - minutes % 15);
  window.timeWidgets[which]['minute'].value = minutes;
}

function setStartDate(newStartDate) {
  this._setDate('start', newStartDate);
}

function setEndDate(newEndDate) {
  this._setDate('end', newEndDate);
}

function onAdjustTime(event) {
  var endDate = window.getEndDate();
  var startDate = window.getStartDate();
  
  if ($(this).readAttribute("id").startsWith("start")) {
    // Start date was changed
    var delta = window.getShadowStartDate().valueOf() -
      startDate.valueOf();
    var newEndDate = new Date(endDate.valueOf() - delta);
    window.setEndDate(newEndDate);
    
    window.timeWidgets['end']['date'].updateShadowValue();
    window.timeWidgets['end']['hour'].updateShadowValue();
    window.timeWidgets['end']['minute'].updateShadowValue();
    window.timeWidgets['start']['date'].updateShadowValue();
    window.timeWidgets['start']['hour'].updateShadowValue();
    window.timeWidgets['start']['minute'].updateShadowValue();
  }
  else {
    // End date was changed
    var delta = endDate.valueOf() - startDate.valueOf();  
    if (delta < 0) {
      alert(labels.validate_endbeforestart);
      var oldEndDate = window.getShadowEndDate();
      window.setEndDate(oldEndDate);

      window.timeWidgets['end']['date'].updateShadowValue();
      window.timeWidgets['end']['hour'].updateShadowValue();
      window.timeWidgets['end']['minute'].updateShadowValue();
    }
  }
}

function onAllDayChanged(event) {
  for (var type in window.timeWidgets) {
    window.timeWidgets[type]['hour'].disabled = this.checked;
    window.timeWidgets[type]['minute'].disabled = this.checked;
  }
}

function initTimeWidgets(widgets) {
  this.timeWidgets = widgets;

  Event.observe(widgets['start']['date'], "change",
		this.onAdjustTime, false);
  Event.observe(widgets['start']['hour'], "change",
		this.onAdjustTime, false);
  Event.observe(widgets['start']['minute'], "change",
		this.onAdjustTime, false);

  Event.observe(widgets['end']['date'], "change",
		this.onAdjustTime, false);
  Event.observe(widgets['end']['hour'], "change",
		this.onAdjustTime, false);
  Event.observe(widgets['end']['minute'], "change",
		this.onAdjustTime, false);

  var allDayLabel = $("allDay");
  var input = $(allDayLabel).childNodesWithTag("input")[0];
  Event.observe(input, "change", onAllDayChanged.bindAsEventListener(input));
  if (input.checked) {
    for (var type in widgets) {
      widgets[type]['hour'].disabled = true;
      widgets[type]['minute'].disabled = true;
    }
  }
}

function refreshAttendees() {
  var attendeesLabel = $("attendeesLabel");
  var attendeesNames = $("attendeesNames").value;
  var attendeesEmails = $("attendeesEmails").value.split(",");
  var attendeesStates = $("attendeesStates").value.split(",");
  var attendeesMenu = $("attendeesMenu").down("ul");
  var attendeesHref = $("attendeesHref");
  
  // Remove link of attendees
  for (var i = 0; i < attendeesHref.childNodes.length; i++)
    attendeesHref.removeChild(attendeesHref.childNodes[i]);

  // Remove attendees from menu
  var menuItems = $$("DIV#attendeesMenu LI.attendee");
  if (menuItems)
    for (var i = 0; i < menuItems.length; i++)
      attendeesMenu.removeChild(menuItems[i]);
  
  if (attendeesNames.length > 0) {
    // Update attendees link and show label
    attendeesHref.appendChild(document.createTextNode(attendeesNames));
    attendeesLabel.setStyle({ display: "block" });

    // Update attendees in menu
    attendeesNames = attendeesNames.split(",");
    for (var i = 0; i < attendeesEmails.length; i++) {
      var node = document.createElement("li");
      attendeesMenu.appendChild(node);
      $(node).writeAttribute("email", attendeesEmails[i]);
      $(node).addClassName("attendee");
      $(node).addClassName(attendeesStates[i]);
      node.appendChild(document.createTextNode(attendeesNames[i]));
      $(node).observe("click", onMailTo);
    }
  }
  else {
    // Hide link of attendees
    attendeesLabel.setStyle({ display: "none" });
  }
}

function initializeAttendeesHref() {
  var attendeesHref = $("attendeesHref");
  var attendeesLabel = $("attendeesLabel");
  var attendeesNames = $("attendeesNames");

  Event.observe(attendeesHref, "click", onAttendeesHrefClick, false);
  refreshAttendees();
}

function onAttendeesHrefClick(event) {
  popupToolbarMenu(this, 'attendeesMenu');
  preventDefault(event);
  return false;
}

function onMailTo(event) {
  var target = getTarget(event);
  openMailTo(target.readAttribute("email"));
}

function getMenus() {
  AppointmentEditor.attendeesMenu = new Array(onPopupAttendeesWindow,
					      "-",
					      onComposeToAllAttendees,
					      onComposeToUndecidedAttendees,
					      "-",
					      null);
  
  var attendeesMenu = $('attendeesMenu');
  attendeesMenu.prepareVisibility = onAttendeesMenuPrepareVisibility;

  return { "attendeesMenu": AppointmentEditor.attendeesMenu };
}

function onAppointmentEditorLoad() {
  assignCalendar('startTime_date');
  assignCalendar('endTime_date');

  var widgets = {'start': {'date': $("startTime_date"),
			   'hour': $("startTime_time_hour"),
			   'minute': $("startTime_time_minute")},
		 'end': {'date': $("endTime_date"),
			 'hour': $("endTime_time_hour"),
			 'minute': $("endTime_time_minute")}};
  initTimeWidgets(widgets);
  initializeAttendeesHref();
}

FastInit.addOnLoad(onAppointmentEditorLoad);