(function ($) {
    $.fn.AttachmentWidget = function() {
        return this.each(function () {
            var button = $(this);
            var fieldset = $(this).parents('.fieldset');
            var config = {};
            var count = 0;

            var readConfig = function() {
                var disabledLabel = fieldset.find('.attachDisabledLabel');

                if (disabledLabel.length) {
                    config.disabledLabel = disabledLabel.html();
                    var required = ''
                    fieldset.find('.attachRequiredField').each(function(index, field) {
                        required += '#' + $(field).html() + ',';
                    });
                    var fields = fieldset.find(required);
                    config.basefields = fields;
                }

                config.showOn = $('#' + fieldset.find('.showAttachsOn').html());
                config.showOnDisplay = config.showOn.find('.attachedFiles');
                count = config.showOnDisplay.find('.initialAttach').length;
                config.showOnEmpty = config.showOn.find('.showAttachmentsEmpty').html();
                config.enabledLabel = fieldset.find('.attachEnabledLabel').html();
            };

            var setState = function() {
                var enabled = true;
                config.fields.each(function() {
                    if (!$(this).val()) {
                        enabled = false;
                        return;
                    }
                });
                if (enabled) {
                    button.removeAttr('disabled').removeClass('disabledAddAttachment');
                    button.val(config.enabledLabel);
                } else {
                    button.attr('disabled', 'disabled').addClass('disabledAddAttachment');
                    button.val(config.disabledLabel);
                }
            };

            var cloneFields = function() {
                var html = '<div class="attachedFileInfo">';
                if (count) {
	            html = config.showOnDisplay.html() + html;
                }
                config.fields.each(function() {
                    var field = $(this);
                    var container= $(this).parents('.field');
                    if (container.find(':file').length) {
                        html += ' (' + field.val() + ')';
                    } else {
                        html += ' ' + field.val();
                    }
                    html += '<span style="display: none;" class="removeField">';
                    html += container.attr('id');
                    html += '</span>';
                    container.hide();
                });
                html += ' <a href="#" class="removeAttach">Remove</a>';
                html += '</div>';
                config.showOnDisplay.html(html);
                count += 1;
                initFileInput();
            };

            var doAttach = function() {
                cloneFields();    
                setState();
            };

            var removeAttachment = function() {
                var link = $(this);
                var attach = $(this).parent('.attachedFileInfo');
                var fields = attach.find('.removeField');
                fields.each(function() {
                    $('#' + $(this).html()).remove();
                });
                attach.remove();
                if (!config.showOnDisplay.html()) {
                    config.showOnDisplay.html(config.showOnEmpty);
                    count = 0;
                }
                return false;
            };

            var initTriggers = function() {
                config.showOnDisplay.find('a.removeAttach').live('click', removeAttachment);
                button.click(doAttach);
            };

            var initFileInput = function() {
                var fieldids = ''
                config.basefields.each(function(i) {
                    var field = $(this);
                    var oldcontainer= $(this).parents('.field');
                    var newcontainer= oldcontainer.clone();
                    var newfield = newcontainer.find('#' + field.attr('id'));
                    newfield.attr('name', newfield.attr('name') + '_' + count);
                    newfield.attr('id', newfield.attr('id') + '_' + count);
                    newcontainer.attr('id', 'container_id_' + newfield.attr('name'));
                    oldcontainer.after(newcontainer);
                    oldcontainer.hide();
                    newcontainer.show();
                    fieldids += '#' + newfield.attr('id') + ','
                });
                config.fields = $(fieldids);
                config.fields.change(setState);
                config.fields.keyup(setState);
            };

            var initWidget = function() {
                readConfig();
                initFileInput();
                initTriggers();
                setState();
            };

            initWidget();
        });
    };

    $.fn.LiaisonForm = function() {
        return this.each(function () {
            var form = $(this);
            var organization = form.find('#id_organization');
            var from = form.find('#id_from_field');
            var poc = form.find('#id_to_poc');
            var cc = form.find('#id_cc1');
            var reply = form.find('#id_replyto');
            var purpose = form.find('#id_purpose');
            var other_purpose = form.find('#id_purpose_text');
            var deadline = form.find('#id_deadline_date');
            var submission_date = form.find('#id_submitted_date');
            var other_organization = form.find('#id_other_organization');
            var approval = form.find('#id_approved');
            var cancel = form.find('#id_cancel');
            var cancel_dialog = form.find('#cancel-dialog');
            var config = {};
            var related_trigger = form.find('#id_related_to');
            var related_url = form.find('#id_related_to').parent().find('.listURL').text();
            var related_dialog = form.find('#related-dialog');
            var unrelate_trigger = form.find('#id_no_related_to');

            var readConfig = function() {
                var confcontainer = form.find('.formconfig');
                config.info_update_url = confcontainer.find('.info_update_url').text();
            };

            var render_mails_into = function(container, person_list, as_html) {
                var html='';

                $.each(person_list, function(index, person) {
                    if (as_html) {
                        html += person[0] + ' &lt;<a href="mailto:'+person[1]+'">'+person[1]+'</a>&gt;<br />';
                    } else {
                        html += person[0] + ' &lt;'+person[1]+'&gt;\n';
                    }
                });
                container.html(html);
            };

            var toggleApproval = function(needed) {
                if (!approval.length) {
                    return;
                }
                if (needed) {
                    approval.removeAttr('disabled');
                    approval.removeAttr('checked');
                } else {
                    approval.attr('checked','checked');
                    approval.attr('disabled','disabled');
                }
            };

            var checkPostOnly = function(post_only) {
                if (post_only) {
                    $("input[name=send]").hide();
                } else {
                    $("input[name=send]").show();
                }
            };

            var updateReplyTo = function() {
                var select = form.find('select[name=from_fake_user]');
                var option = select.find('option:selected');
                reply.val(option.attr('title'));
                updateFrom();
            }

            var userSelect = function(user_list) {
                if (!user_list || !user_list.length) {
                    return;
                }
                var link = form.find('a.from_mailto');
                var select = form.find('select[name=from_fake_user]');
                var options = '';
                link.hide();
                $.each(user_list, function(index, person) {
                    options += '<option value="' + person[0] + '" title="' + person[1][1] + '">'+ person[1][0] + ' &lt;' + person[1][1] + '&gt;</option>';
                });
                select.remove();
                link.after('<select name="from_fake_user">' + options +'</select>')
                form.find('select[name=from_fake_user]').change(updateReplyTo);
                updateReplyTo();
            };

            var updateInfo = function(first_time) {
                var entity = organization;
                var to_entity = from;
                if (!entity.is('select') || !to_entity.is('select')) {
                    return false;
                }
                var url = config.info_update_url;
                $.ajax({
                    url: url,
                    type: 'GET',
                    cache: false,
                    async: true,
                    dataType: 'json',
                    data: {to_entity_id: organization.val(),
                           from_entity_id: to_entity.val()},
                    success: function(response){
                        if (!response.error) {
                            if (!first_time || !cc.text()) {
                                render_mails_into(cc, response.cc, false);
                            }
                            render_mails_into(poc, response.poc, true);
                            toggleApproval(response.needs_approval);
                            checkPostOnly(response.post_only);
                            userSelect(response.full_list);
                        }
                    }
                });
                return false;
            };

            var updateFrom = function() {
                var reply_to = reply.val();
                form.find('a.from_mailto').attr('href', 'mailto:' + reply_to);
            };

            var updatePurpose = function() {
                var datecontainer = deadline.parents('.field');
                var othercontainer = other_purpose.parents('.field');
                var selected_id = purpose.val();
                var deadline_required = datecontainer.find('.fieldRequired');
             
                if (selected_id == '1' || selected_id == '2' || selected_id == '5') {
                    datecontainer.show();
                } else {
                    datecontainer.hide();
                    deadline.val('');
                }

                if (selected_id == '5') {
                    othercontainer.show();
                    deadline_required.hide();
                } else {
                    othercontainer.hide();
                    other_purpose.val('');
                    deadline_required.show();
                }
            };

            var checkOtherSDO = function() {
                var entity = organization.val();
		if (entity=='othersdo') {
                    other_organization.parents('.field').show();
                } else {
                    other_organization.parents('.field').hide();
                }
            };

            var cancelForm = function() {
                cancel_dialog.dialog("open");
            };

            var getRelatedLink = function() {
                link = $(this).text();;
                pk = $(this).nextAll('.liaisonPK').text();
                widget = related_trigger.parent();
                widget.find('.relatedLiaisonWidgetTitle').text(link);
                widget.find('.relatedLiaisonWidgetValue').val(pk);
                widget.find('.noRelated').hide();
                unrelate_trigger.show();
                related_dialog.dialog('close');
                return false;
            };

            var selectNoRelated = function() {
                widget = $(this).parent();
                widget.find('.relatedLiaisonWidgetTitle').text('');
                widget.find('.noRelated').show();
                widget.find('.relatedLiaisonWidgetValue').val('');
                $(this).hide();
                return false;
            };

            var selectRelated = function() {
	        trigger = $(this);
                widget = $(this).parent();
                url = widget.find('.listURL').text();
                title = widget.find('.relatedLiaisonWidgetTitle');
                related_dialog.html('<img src="/images/ajax-loader.gif" />');
                related_dialog.dialog('open');
                $.ajax({
                    url: url,
                    type: 'GET',
                    cache: false,
                    async: true,
                    dataType: 'html',
                    success: function(response){
                        related_dialog.html(response);
                        related_dialog.find('th a').click(function() {
                            widget.find('.listURL').text(related_url + $(this).attr('href'));
                            trigger.click();
                            return false;
                        });
                        related_dialog.find('td a').click(getRelatedLink);
                    }
                });
                return false;
            };

            var checkFrom = function(first_time) {
                var reduce_options = form.find('.reducedToOptions');
                if (!reduce_options.length) {
                    updateInfo(first_time);
                    return;
                }
                var to_select = organization;
                var from_entity = from.val();
                if (!reduce_options.find('.full_power_on_' + from_entity).length) {
                    to_select.find('optgroup').eq(1).hide();
                    to_select.find('option').each(function() {
                        if (!reduce_options.find('.reduced_to_set_' + $(this).val()).length) {
                            $(this).hide();
                        } else {
                            $(this).show();
                        }
                    });
                    if (!to_select.find('option:selected').is(':visible')) {
                        to_select.find('option:selected').removeAttr('selected');
                    }
                } else {
                    to_select.find('optgroup').show();
                    to_select.find('option').show();
                }
                updateInfo(first_time);
            };

            var checkSubmissionDate = function() {
                var date_str = submission_date.val();
                if (date_str) {
                    var sdate = new Date(date_str);
                    var today = new Date();
                    if (Math.abs(today-sdate) > 2592000000) {  // 2592000000 = 30 days in milliseconds
                        return confirm('Submission date ' + date_str + ' differ more than 30 days.\n\nDo you want to continue and post this liaison using that submission date?\n');
                    }
                }
            };

            var initTriggers = function() {
                organization.change(function() {updateInfo(false);});
                organization.change(checkOtherSDO);
                from.change(function() {checkFrom(false);});
                reply.keyup(updateFrom);
                purpose.change(updatePurpose);
                cancel.click(cancelForm);
                related_trigger.click(selectRelated);
                unrelate_trigger.click(selectNoRelated);
                form.submit(checkSubmissionDate);
            };

            var updateOnInit = function() {
                updateFrom();
                checkFrom(true);
                updatePurpose();
                checkOtherSDO();
            };

            var initDatePicker = function() {
                deadline.datepicker({
                    dateFormat: $.datepicker.ATOM,
                    changeYear: true
                });
                submission_date.datepicker({
                    dateFormat: $.datepicker.ATOM,
                    changeYear: true
                });
            };

            var initAttachments = function() {
                form.find('.addAttachmentWidget').AttachmentWidget();
            };

            var initDialogs = function() {
                cancel_dialog.dialog({
                    resizable: false,
                    height:200,
                    modal: true,
                    autoOpen: false,
                    buttons: {
                       Ok: function() {
                           window.location='..';
                           $( this ).dialog( "close" );
                       },
                       Cancel: function() {
                           $( this ).dialog( "close" );
                       }
                    }
                });

                related_dialog.dialog({
                    height: 400,
                    width: 800,
                    draggable: true,
                    modal: true,
                    autoOpen: false
                });
            };

            var initForm = function() {
                readConfig();
                initTriggers();
                updateOnInit();
                initDatePicker();
                initAttachments();
                initDialogs();
            };

            initForm();
        });

    };

    $(document).ready(function () {
        $('form.liaisonform').LiaisonForm();
    });

})(jQuery);