/*
	Sankore API
*/

function startEditing()
{
    modeEdit();
}

function stopEditing()
{
    modeView();
}

function initialize()
{
	
}

function checkResponse()
{
    checkWord();
}
/*
	/ END sankore api
*/

var sankoreLang = {
    view: "Показать", 
    edit: "Изменить",
    example: "много*,*много*лет*назад*...",
    wgt_name: "Порядок слов",
    reload: "Обновить",
    slate: "Узор",
    pad: "Планшет"
};

var word = "";
var curWord = "";

if(window.sankore){
    word = (sankore.preference("rightOrdWords", ""))?sankore.preference("rightOrdWords", ""):sankoreLang.example;
    curWord = (sankore.preference("currentOrdWords", ""))?sankore.preference("currentOrdWords", ""):"";
} else {
    word = sankoreLang.example;
}

var doCheckWord = true;

// array of dom elements
var letters = [];

var editMode = false; // just a flag

var wgtState = false; // just another flag

// if use the "edit" button or rely on the api instead
var isSankore = false;
// whether to do window.resize or not (window = widget area)
var isBrowser = ( typeof( widget ) == "undefined" );

// hardcoded parameters, not very good
var input_width = 606;
var widget_padding = 0;
var min_view_width = 400;

$(document).ready(function(){
    if(sankore.preference("ord_words_style","")){
        changeStyle(sankore.preference("ord_words_style",""));
        $(".style_select").val(sankore.preference("ord_words_style",""));
    } else
        changeStyle(1)
    $("#wgt_display").text(sankoreLang.view);
    $("#wgt_edit").text(sankoreLang.edit);
    $("#wgt_display, #wgt_edit").click(function(event){
        if(this.id == "wgt_display"){
            if(!$(this).hasClass("selected")){                
                $(this).addClass("selected");
                $("#wgt_edit").removeClass("selected");
                $(".style_select").css("display","none");                
                $(this).css("display", "none");
                $("#wgt_edit").css("display", "block");
                modeView();
            }
        } else {            
            if(!$(this).hasClass("selected")){
                $(this).addClass("selected");
                $("#wgt_display").removeClass("selected");
                $(".style_select").css("display","block");                
                $(this).css("display", "none");
                $("#wgt_display").css("display", "block");
                modeEdit();
            }
        }
    });
    
    $("#wgt_name").text(sankoreLang.wgt_name);
    
    $("#wgt_reload").text(sankoreLang.reload).click(function(){
        if(wgtState)
            $("#wgt_display").trigger("click");
        else
        {
            $( "#mp_word" ).empty();
	
            // create new set of letters
            var letters;
            if(window.sankore && curWord && !editMode)
                letters = createWordLetters( curWord );
            else
                letters = shuffle( createWordLetters( word ) );
    
            for( i in letters ){
                $("#mp_word").append( letters[i] );
            }
	
            // in sankore api there would be a function to check 
            // the answer, so no update parameter would be needed
            if( !isSankore ){
                $( "#mp_word" ).sortable( {
                    update: checkWord
                } );
            } else $( "#mp_word" ).sortable();

            // adjustWidth
            var totalLettersWidth = 0;
            for( i in letters ){
                var currentWidth = $( letters[i] ).outerWidth( true );
                totalLettersWidth += currentWidth;
            }
            totalLettersWidth += 1;

            var width = Math.max(
                totalLettersWidth,
                min_view_width
                );
	
            // shift the words to the right to center them
            if( width > totalLettersWidth ){
                $( "#mp_word" ).css( "margin-left", Math.round( (width - totalLettersWidth)/2 ) );
            }
            else{
                $( "#mp_word" ).css( "margin-left", 0 );
            }
        }
    });
    
    $(".style_select option[value='1']").text(sankoreLang.slate);
    $(".style_select option[value='2']").text(sankoreLang.pad);
    
    $(".style_select").change(function (event){
        changeStyle($(this).find("option:selected").val());
    })
})

/*
=================
createWordLetters
=================
returns array of dom elements
*/
function createWordLetters( word )
{
    var ch, el;
    var letters = [];
	
    if( word.indexOf( '*' ) != -1 )
    {
        var tmp = word.split( '*' );
        for( i in tmp )
        {
            ch = tmp[i];
            el = document.createElement( "div" );
            $(el).addClass( "letter" ).text( ch );
            letters.push( el );
        }
    }
    else
    {
        for( var i = 0; i < word.length; i++ )
        {
            ch = word.charAt( i );
            el = document.createElement( "div" );
            $(el).addClass( "letter" ).text( ch );
            letters.push( el );
        }
    }
    return letters;
}

//changing the style
function changeStyle(val){
    if(val == 1){
        $(".b_top_left").removeClass("btl_pad");
        $(".b_top_center").removeClass("btc_pad");
        $(".b_top_right").removeClass("btr_pad");
        $(".b_center_left").removeClass("bcl_pad");
        $(".b_center_right").removeClass("bcr_pad");
        $(".b_bottom_right").removeClass("bbr_pad");
        $(".b_bottom_left").removeClass("bbl_pad");
        $(".b_bottom_center").removeClass("bbc_pad");
        $("#wgt_reload").removeClass("pad_color").removeClass("pad_reload");
        $("#wgt_edit").removeClass("pad_color").removeClass("pad_edit");
        $("#wgt_display").removeClass("pad_color").removeClass("pad_edit");
        $("#wgt_name").removeClass("pad_color");
        $(".style_select").removeClass("pad_select");
    } else {
        $(".b_top_left").addClass("btl_pad");
        $(".b_top_center").addClass("btc_pad");
        $(".b_top_right").addClass("btr_pad");
        $(".b_center_left").addClass("bcl_pad");
        $(".b_center_right").addClass("bcr_pad");
        $(".b_bottom_right").addClass("bbr_pad");
        $(".b_bottom_left").addClass("bbl_pad");
        $(".b_bottom_center").addClass("bbc_pad");
        $("#wgt_reload").addClass("pad_color").addClass("pad_reload");
        $("#wgt_edit").addClass("pad_color").addClass("pad_edit");
        $("#wgt_display").addClass("pad_color").addClass("pad_edit");
        $("#wgt_name").addClass("pad_color");
        $(".style_select").addClass("pad_select");
    }
}

/*
=====================
checkWord
=====================
scans the letters and checks 
if they are in the right order
*/
function checkWord()
{	
    var str = "";
    $( "#mp_word .letter" ).each( function(){
        str += $(this).text();
    });
    var w = word;
    while( w.indexOf( '*' ) != -1 )
    {
        w = w.replace( '*', '' );
    }
    //alert(str + " | " + w)
    if( str == w ){
        $( "#mp_word .letter" ).addClass( "right" );
    //message( "Right!" );
    } else {
        $( "#mp_word .letter" ).removeClass( "right" );
    }
}

/*
==============
shuffle
==============
shuffles an array
*/
function shuffle( arr )
{
    var pos, tmp;
	
    for( var i = 0; i < arr.length; i++ )
    {
        pos = Math.round( Math.random() * ( arr.length - 1 ) );
        tmp = arr[pos];
        arr[pos] = arr[i];
        arr[i] = tmp;
    }
    return arr;
}



/*
==================
modeView()
==================
turns the widget into the view mode
*/
function modeView()
{
    if( editMode ){
        word = $( "#mp_word input:text" ).attr( "value" );
    }
    
    wgtState = false;
	
    // clean the previous word
    $( "#mp_word" ).empty();
	
    // create new set of letters
    var letters;
    if(window.sankore && curWord && !editMode)
        letters = createWordLetters( curWord );
    else
        letters = shuffle( createWordLetters( word ) );
    
    for( i in letters ){
        $("#mp_word").append( letters[i] );
    }
	
    // in sankore api there would be a function to check 
    // the answer, so no update parameter would be needed
    if( !isSankore ){
        $( "#mp_word" ).sortable( {
            update: checkWord
        } );
    } else $( "#mp_word" ).sortable();

    // adjustWidth
    var totalLettersWidth = 0;
    for( i in letters ){
        var currentWidth = $( letters[i] ).outerWidth( true );
        totalLettersWidth += currentWidth;
    }
    totalLettersWidth += 1;

    var width = Math.max(
        totalLettersWidth,
        min_view_width
        );
	
    // shift the words to the right to center them
    if( width > totalLettersWidth ){
        $( "#mp_word" ).css( "margin-left", Math.round( (width - totalLettersWidth)/2 ) );
    }
    else{
        $( "#mp_word" ).css( "margin-left", 0 );
    }
	
    checkWord();
}

/*
================
modeEdit
================
*/
function modeEdit()
{
    editMode = true;
    wgtState = true;
    $( "#mp_word").css( "margin-left", 0 ).empty().append('<input value="'+word+'">');

}

if (window.widget) {
    window.widget.onleave = function(){
        sankore.setPreference("ord_words_style", $(".style_select").find("option:selected").val());
        if($( "#mp_word input:text" ).attr( "value" ))
        {
            modeView();
            var str = "";
            $( "#mp_word .letter" ).each( function(){
                str += $(this).text() + "*";
            });        
            str = str.substr(0, str.length - 1);        
            sankore.setPreference("currentOrdWords", str);           
            modeEdit();
        }
        else{
            str = "";
            $( "#mp_word .letter" ).each( function(){
                str += $(this).text() + "*";
            });        
            str = str.substr(0, str.length - 1);        
            sankore.setPreference("currentOrdWords", str);
        }
        sankore.setPreference("rightOrdWords", word);
    }
}