// 
// This file shows the minimum you need to provide to BookReader to display a book
//
// Copyright(c)2008-2009 Internet Archive. Software license AGPL version 3.

// Create the BookReader object
br = new BookReader();

// Return the width of a given page.  Here we assume all images are 800 pixels wide
br.getPageWidth = function(index) {
    return 800;
}

// Return the height of a given page.  Here we assume all images are 1200 pixels high
br.getPageHeight = function(index) {
    return 1200;
}

// We load the images from archive.org -- you can modify this function to retrieve images
// using a different URL structure
br.getPageURI = function(index, reduce, rotate) {
    // reduce and rotate are ignored in this simple implementation, but we
    // could e.g. look at reduce and load images from a different directory
    // or pass the information to an image server
    var leafStr = '0000';
    var imgStr = (index+1).toString();
    var re = new RegExp("0{"+imgStr.length+"}$");
    var url = bookreaderConfig.host + 'eserv/' + bookreaderConfig.pid.replace('_',':') + '/' + bookreaderConfig.resource + '/' + bookreaderConfig.resource + '-'+leafStr.replace(re, imgStr) + '.jpg?bookpage=true';
    return url;
}

// Return which side, left or right, that a given page should be displayed on
br.getPageSide = function(index) {
    if (0 == (index & 0x1)) {
        return 'R';
    } else {
        return 'L';
    }
}

// This function returns the left and right indices for the user-visible
// spread that contains the given index.  The return values may be
// null if there is no facing page or the index is invalid.
br.getSpreadIndices = function(pindex) {   
    var spreadIndices = [null, null]; 
    if ('rl' == this.pageProgression) {
        // Right to Left
        if (this.getPageSide(pindex) == 'R') {
            spreadIndices[1] = pindex;
            spreadIndices[0] = pindex + 1;
        } else {
            // Given index was LHS
            spreadIndices[0] = pindex;
            spreadIndices[1] = pindex - 1;
        }
    } else {
        // Left to right
        if (this.getPageSide(pindex) == 'L') {
            spreadIndices[0] = pindex;
            spreadIndices[1] = pindex + 1;
        } else {
            // Given index was RHS
            spreadIndices[1] = pindex;
            spreadIndices[0] = pindex - 1;
        }
    }
    
    return spreadIndices;
}

// For a given "accessible page index" return the page number in the book.
//
// For example, index 5 might correspond to "Page 1" if there is front matter such
// as a title page and table of contents.
br.getPageNum = function(index) {
    return index+1;
}

// Total number of leafs
br.numLeafs = bookreaderConfig.pageCount;

// Book title and the URL used for the book title link
br.ui = bookreaderConfig.ui;
br.bookTitle= bookreaderConfig.resource + " - " + bookreaderConfig.appName;
br.bookUrl = bookreaderConfig.host + 'view/' + bookreaderConfig.pid.replace(/_/, ':');


br.getEmbedCode = function(frameWidth, frameHeight, viewParams) {
    return "Embed code not supported in bookreader demo.";
}

// Let's go!
br.init();

// read-aloud and search need backend compenents and are not supported in the demo
$('#BRtoolbar').find('.read').hide();
$('#textSrch').hide();
$('#btnSrch').hide();

if(bookreaderConfig.agent == 'iphone' || bookreaderConfig.agent == 'android')
{
	$('.BRnavCntl').unbind('click');
	$('.BRnavCntl').click(
	        function(){
	            if ($('#BRnavCntlBtm').hasClass('BRdn')) {
	                $('#BRtoolbar').animate({top:-132});
	                $('#BRnav').animate({bottom:-160});
	                $('#BRnavCntlBtm').addClass('BRup').removeClass('BRdn');
	                $('#BRnavCntlTop').addClass('BRdn').removeClass('BRup');
	                $('#BRnavCntlBtm.BRnavCntl').animate({height:'110px'});
	                $('.BRnavCntl').delay(1000).animate({opacity:.25},1000);
	            } else {
	                $('#BRtoolbar').animate({top:0});
	                $('#BRnav').animate({bottom:0});
	                $('#BRnavCntlBtm').addClass('BRdn').removeClass('BRup');
	                $('#BRnavCntlTop').addClass('BRup').removeClass('BRdn');
	                $('#BRnavCntlBtm.BRnavCntl').animate({height:'110px'});
	                $('.BRvavCntl').animate({opacity:1});
	            };
	        }
	    );
}
