/*  Authors:
 *    Adam Young <ayoung@redhat.com>
 *
 * Copyright (C) 2010 Red Hat
 * see file 'COPYING' for use and warranty information
 *
 * This program is free software; you can redistribute it and/or
 * modify it under the terms of the GNU General Public License as
 * published by the Free Software Foundation; version 2 only
 *
 * This program 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 General Public License for more details.
 *
 * You should have received a copy of the GNU General Public License
 * along with this program; if not, write to the Free Software
 * Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
*/

/* REQUIRES: ipa.js */
/* CURRENTLY ALSO REQUIRES search.js, because it reuses it's code to create
 * the AssociationList elements; IT NEEDS IT'S OWN CODE! */

/**
*This associator is built for the case where each association requires a separate rpc
*/
function SerialAssociator(form, oneObjPkey, manyObjPkeys)
{
    this.form = form;
    this.manyObjPkeys =  manyObjPkeys;
    this.oneObjPkey = oneObjPkey;

    this.associateNext = function(){
        var form = this.form;
        //TODO assert pre-conditions
        var  manyObjPkey =  manyObjPkeys.shift();
        if (manyObjPkey){
            var options = {};
            options[form.oneObj] = oneObjPkey;
            var args = [manyObjPkey];
            var associator = this;

            ipa_cmd( form.method,args, options ,
                     function(){
                         associator.associateNext();
                     },
                     function(response){
                         alert("associateFailure");
                     },
                     form.manyObj );
        }else{
            var state = {};
            state[form.oneObj + '-facet'] = 'associate';
            state[form.oneObj + '-pkey'] = this.oneObjPkey;
            $.bbq.pushState(state);
        }
    }
}

/**
*This associator is for the common case where all the asociations can be sent
in a single rpc
*/
function BulkAssociator(form, pkey, manyObjPkeys)
{
    this.form = form;
    this.pkey = pkey;
    this.manyObjPkeys = manyObjPkeys;

    this.associateNext = function() {
        var form = this.form;
        var option = manyObjPkeys.shift();
        while(manyObjPkeys.length > 0) {
            option += "," + manyObjPkeys.shift();
        }

        var options = {
          "all":true
        };
        options[form.manyObj] = option;

        var args = [this.pkey];

        ipa_cmd( form.method,args, options ,
                 function(response){
                     if (response.error){
                         alert("error adding memeber");
                     }else{
                         var state = {};
                         state[form.onObj + '-facet'] = 'associate';
                         state[form.oneObj + '-pkey'] = this.pkey;
                         $.bbq.pushState(state);
                     }
                 },
                 function(response){
                     alert("associateFailure");
                 },
                 form.oneObj );
    }
}

/**
 *  Create a form for a one to many association.
 *
 */
function AssociationForm(oneObj, manyObj, pkey, jobj, associatorConstructor, method)
{
    this.oneObj = oneObj;
    this.manyObj = manyObj;
    this.searchColumn = pkey;
    this.parentTab = jobj

    //An optional parameter to determine what ipa method to call to create
    //the association
    if (method)
        this.method = method;
    else
        this.method = 'add_member';

    if (associatorConstructor)
        this.associatorConstructor = associatorConstructor;
    else
        this.associatorConstructor = SerialAssociator;

    this.setup = function() {
        association_form_create(this.parentTab);
        this.parentTab.find('#availableList').html('');
        this.parentTab.find('#enrollments').html('');

        var currentObjToEnroll = $.bbq.getState(this.oneObj + '-pkey', true) || '';
        var form = this;

        $('h1').text('Enroll ' + this.oneObj + ' ' + currentObjToEnroll + ' in ' + this.manyObj + '.');
        $('#enroll').click(function () {
            form.associate();
        });
        $('#cancel').click(function () {
            var state = {};
            state[form.oneObj + '-facet'] = 'associate';
            $.bbq.pushState(state);
        });
        $("#addToList").click(function(){
            $('#availableList :selected').each(function(i, selected){
                $("#enrollments").append(selected);
            });
            $('#availableList :selected').remove();
        });
        $("#removeFromList").click(function(){
            $('#enrollments :selected').each(function(i, selected){
                $("#availableList").append(selected);
            });
            $('#enrollments :selected').remove();
        });
        $("#find").click(function(){
            form.search();
        });
    };

    this.search = function() {
        var form = this;

        function search_on_win(data, text_status, xhr) {
            var results = data.result;
            $("#availableList").html("");
            for (var i =0; i != results.count; i++){
                var result = results.result[i];
                $("<option></option>",{
                    value: result[form.searchColumn][0],
                    html: result[form.searchColumn][0]
                }).appendTo( $("#availableList"));
            }
        };

        function search_on_fail(xhr, text_status, errow_thrown) {
            alert("associationSearchFailure");
        };

        var queryFilter = $('#associateFilter').val();
        ipa_cmd('find', [queryFilter], {}, search_on_win, null, this.manyObj);
    };

    this.associate = function () {
        var manyObjPkeys = [];
        $('#enrollments').children().each(function (i, selected) {
            manyObjPkeys.push(selected.value);
        });
        var pkey = $.bbq.getState(this.oneObj + '-pkey', true) || '';
        var associator =
            new this.associatorConstructor(this, pkey, manyObjPkeys);
        associator.associateNext();
    };
}

/**
    A modfied version of search. It shows the  associations for an object.
*/
function AssociationList(obj, assignFacet, associationColumns, jobj)
{
    this.obj = obj;
    this.associationColumns = associationColumns;
    this.assignFacet = assignFacet;
    this.parentTab = jobj;

    this.populate = function(userData) {
       var tbody = this.parentTab.find('.search-table tbody');
       tbody.empty();
       var associationList = userData.result.result[this.associationColumns[0].column];
       for (var j = 0; j < associationList.length; j++){
            var row  = $("<tr/>").appendTo(tbody);
            for (var k = 0; k < associationColumns.length ;k++){
                var column = this.associationColumns[k].column;
                $("<td></td>",{
                    html: userData.result.result[column][j]
                }).appendTo(row);
            }
        }
    }

    this.setup = function() {
        association_list_create(this.obj, this.parentTab);
        var form = this;
        var pkey_hash = this.obj + '-pkey';
        var pkey = $.bbq.getState(pkey_hash, true) || '';
        this.parentTab.find(".search-filter").css("display", "none");
        this.parentTab.find(".search-buttons").html("");
        $("<input/>", {
            type:  'button',
            value: 'enroll',
            click: function() {
                var state = {};
                state[form.obj + '-facet'] = form.assignFacet;
                $.bbq.pushState(state);
            }
        }).appendTo(this.parentTab.find(".search-buttons"));
        var header = $("<tr></tr>").appendTo(this.parentTab.find('.search-table thead:last'));
        for (var i =0 ; i != associationColumns.length ;i++){
            $("<th></th>",{
                html: associationColumns[i].title
            }).appendTo(header);
        }
        ipa_cmd( 'show', [pkey], {},
                 function(result){
                     form.populate(result);
                 },
                 function(){
                     alert("associationListFailure");
                 },
                 this.obj);
    }
}

/* FIXME: TEMPORARY FACET GENERATORS; WE NEED A BETTER WAY! */

function association_form_create(jobj)
{
    var div = $('<div id="associations"></div>');
    div.append($('<h1></h1>', {
        text: 'Enroll in Groups'
    }));
    var form = $('<form></form>');
    var form_div = $('<div></div>');
    form_div.css('border-width', '1px');
    var sub_div = $('<div></div>');
    sub_div.append($('<input />', {
        id: 'associateFilter',
        type: 'text'
    }));
    sub_div.append($('<input />', {
        id: 'find',
        type: 'button',
        value: 'Find'
    }));
    var but_span = $('<span></span>');
    but_span.css('float', 'right');
    but_span.append($('<input />', {
        id: 'cancel',
        type: 'button',
        value: 'Cancel'
    }));
    but_span.append($('<input />', {
        id: 'enroll',
        type: 'button',
        value: 'Enroll'
    }));
    sub_div.append(but_span);
    form_div.append(sub_div);
    form.append(form_div);
    var form_div = $('<div id="results"></div>');
    form_div.css('border', '2px solid rgb(0, 0, 0)');
    form_div.css('position', 'relative');
    form_div.css('height', '200px');
    var sub_div = $('<div></div>');
    sub_div.css('float', 'left');
    sub_div.append($('<div></div>', {
        text: 'Available'
    }));
    sub_div.append($('<select></select>', {
        id: 'availableList',
        width: '150px',
        size: '10',
        multiple: 'true'
    }));
    form_div.append(sub_div);
    var sub_div = $('<div></div>');
    sub_div.css('float', 'left');
    var p = $('<p></p>');
    p.append($('<input />', {
        id: 'removeFromList',
        type: 'button',
        value: '<<'
    }));
    sub_div.append(p);
    var p = $('<p></p>');
    p.append($('<input />', {
        id: 'addToList',
        type: 'button',
        value: '>>'
    }));
    sub_div.append(p);
    form_div.append(sub_div);
    var sub_div = $('<div></div>');
    sub_div.css('float', 'left');
    sub_div.append($('<div></div>', {
        text: 'Prospective'
    }));
    sub_div.append($('<select></select>', {
        id: 'enrollments',
        width: '150px',
        size: '10',
        multiple: 'true'
    }));
    form_div.append(sub_div);
    form.append(form_div);
    form.append($('<hr />'));
    form.append($('<div></div>', {
        text: 'Message Area'
    }));
    form.append($('<hr />'));
    var form_div = $('<div></div>');
    var span = $('<span></span>');
    span.css('float', 'left');
    span.append($('<p></p>', {
        text: '*Enter Group Names and Press Groups'
    }));
    span.append($('<p></p>', {
        text: '*More stuff'
    }));
    span.append($('<p></p>', {
        text: '*More stuff'
    }));
    form_div.append(span);
    form.append(form_div);
    div.append(form);
    jobj.append(div);
}

function association_list_create(obj_name, jobj)
{
    search_create(obj_name, [], jobj);
}