/*
 * jQuery Orbit Plugin 1.2.3
 * www.ZURB.com/playground
 * Copyright 2010, ZURB
 * Free to use under the MIT license.
 * http://www.opensource.org/licenses/mit-license.php
*/


(function($) {

    $.fn.orbit = function(options) {

        //Defaults to extend options
        var defaults = {  
            animation: 'horizontal-push',     // fade, horizontal-slide, vertical-slide, horizontal-push
            animationSpeed: 600,         // how fast animtions are
            timer: true,             // true or false to have the timer
            advanceSpeed: 4000,         // if timer is enabled, time between transitions 
            pauseOnHover: true,         // if you hover pauses the slider
            startClockOnMouseOut: true,     // if clock should start on MouseOut
            startClockOnMouseOutAfter: 1000,   // how long after MouseOut should the timer start again
            directionalNav: true,         // manual advancing directional navs
            captions: true,           // do you want captions?
            captionAnimation: 'fade',       // fade, slideOpen, none
            captionAnimationSpeed: 600,     // if so how quickly should they animate in
            bullets: false,            // true or false to activate the bullet navigation
            bulletThumbs: false,        // thumbnails for the bullets
            bulletThumbLocation: '',      // location from this file where thumbs will be
            afterSlideChange: function(){}     // empty function 
       };  
        
        //Extend those options
        var options = $.extend(defaults, options); 
  
        return this.each(function() {
        
// ==============
// ! SETUP   
// ==============
        
            //Global Variables
            var activeSlide = 0,
              numberSlides = 0,
              orbitWidth,
              orbitHeight,
              locked;
            
            //Initialize
            var orbit = $(this).addClass('orbit'),         
              orbitWrapper = orbit.wrap('<div class="orbit-wrapper" />').parent();
            orbit.add(orbitWidth).width('1px').height('1px');
                    
            //Collect all slides and set slider size of largest image
            var slides = orbit.children('img, a, div');
            slides.each(function() {
                var _slide = $(this),
                  _slideWidth = _slide.width(),
                  _slideHeight = _slide.height();
                if(_slideWidth > orbit.width()) {
                  orbit.add(orbitWrapper).width(_slideWidth);
                  orbitWidth = orbit.width();               
              }
              if(_slideHeight > orbit.height()) {
                  orbit.add(orbitWrapper).height(_slideHeight);
                  orbitHeight = orbit.height();
        }
                numberSlides++;
            });
            
            //Animation locking functions
            function unlock() {
                locked = false;
            }
            function lock() { 
                locked = true;
            }
            
            //If there is only a single slide remove nav, timer and bullets
            if(slides.length == 1) {
              options.directionalNav = false;
              options.timer = false;
              options.bullets = false;
            }
            
            //Set initial front photo z-index and fades it in
            slides.eq(activeSlide)
              .css({"z-index" : 3})
              .fadeIn(function() {
                //brings in all other slides IF css declares a display: none
                slides.css({"display":"block"})
              });
            
// ==============
// ! TIMER   
// ==============

            //Timer Execution
            function startClock() {
              if(!options.timer  || options.timer == 'false') { 
                return false;
              //if timer is hidden, don't need to do crazy calculations
              } else if(timer.is(':hidden')) {
                clock = setInterval(function(e){
            shift("next");  
                }, options.advanceSpeed);                
            //if timer is visible and working, let's do some math
              } else {
                timerRunning = true;
                pause.removeClass('active')
                clock = setInterval(function(e){
                    var degreeCSS = "rotate("+degrees+"deg)"
                    degrees += 2
                    rotator.css({ 
                        "-webkit-transform": degreeCSS,
                        "-moz-transform": degreeCSS,
                        "-o-transform": degreeCSS
                    });
                    if(degrees > 180) {
                        rotator.addClass('move');
                        mask.addClass('move');
                    }
                    if(degrees > 360) {
                        rotator.removeClass('move');
                        mask.removeClass('move');
                        degrees = 0;
                        shift("next");
                    }
                }, options.advanceSpeed/180);
        }
          }
          function stopClock() {
            if(!options.timer || options.timer == 'false') { return false; } else {
                timerRunning = false;
                clearInterval(clock);
                pause.addClass('active');
        }
          }  
            
            //Timer Setup
            if(options.timer) {           
                var timerHTML = '<div class="timer"><span class="mask"><span class="rotator"></span></span><span class="pause"></span></div>'
                orbitWrapper.append(timerHTML);
                var timer = orbitWrapper.children('div.timer'),
                  timerRunning;
                if(timer.length != 0) {
                    var rotator = $('div.timer span.rotator'),
                      mask = $('div.timer span.mask'),
                      pause = $('div.timer span.pause'),
                      degrees = 0,
                      clock; 
                    startClock();
                    timer.click(function() {
                        if(!timerRunning) {
                            startClock();
                        } else { 
                            stopClock();
                        }
                    });
                    if(options.startClockOnMouseOut){
                        var outTimer;
                        orbitWrapper.mouseleave(function() {
                            outTimer = setTimeout(function() {
                                if(!timerRunning){
                                    startClock();
                                }
                            }, options.startClockOnMouseOutAfter)
                        })
                        orbitWrapper.mouseenter(function() {
                            clearTimeout(outTimer);
                        })
                    }
                }
            }  
          
          //Pause Timer on hover
          if(options.pauseOnHover) {
            orbitWrapper.mouseenter(function() {
              stopClock(); 
            });
         }
            
// ==============
// ! CAPTIONS   
// ==============
                     
            //Caption Setup
            if(options.captions) {
                var captionHTML = '<div class="orbit-caption"></div>';
                orbitWrapper.append(captionHTML);
                var caption = orbitWrapper.children('.orbit-caption');
              setCaption();
            }
      
      //Caption Execution
            function setCaption() {
              if(!options.captions || options.captions =="false") {
                return false; 
              } else {
                var _captionLocation = slides.eq(activeSlide).data('caption'); //get ID from rel tag on image
                  _captionHTML = $(_captionLocation).html(); //get HTML from the matching HTML entity                
                //Set HTML for the caption if it exists
                if(_captionHTML) {
                  caption
                    .attr('id',_captionLocation) // Add ID caption
                      .html(_captionHTML); // Change HTML in Caption 
                    //Animations for Caption entrances
                   if(options.captionAnimation == 'none') {
                     caption.show();
                   }
                   if(options.captionAnimation == 'fade') {
                     caption.fadeIn(options.captionAnimationSpeed);
                   }
                   if(options.captionAnimation == 'slideOpen') {
                     caption.slideDown(options.captionAnimationSpeed);
                   }
                } else {
                  //Animations for Caption exits
                  if(options.captionAnimation == 'none') {
                     caption.hide();
                   }
                   if(options.captionAnimation == 'fade') {
                     caption.fadeOut(options.captionAnimationSpeed);
                   }
                   if(options.captionAnimation == 'slideOpen') {
                     caption.slideUp(options.captionAnimationSpeed);
                   }
                }
        }
            }
            
// ==================
// ! DIRECTIONAL NAV   
// ==================

            //DirectionalNav { rightButton --> shift("next"), leftButton --> shift("prev");
            if(options.directionalNav) {
              if(options.directionalNav == "false") { return false; }
                var directionalNavHTML = '<div class="slider-nav"><span class="right">Right</span><span class="left">Left</span></div>';
                orbitWrapper.append(directionalNavHTML);
                var leftBtn = orbitWrapper.children('div.slider-nav').children('span.left'),
                  rightBtn = orbitWrapper.children('div.slider-nav').children('span.right');
                leftBtn.click(function() { 
                    stopClock();
                    shift("prev");
                });
                rightBtn.click(function() {
                    stopClock();
                    shift("next")
                });
            }
            
// ==================
// ! BULLET NAV   
// ==================
            
            //Bullet Nav Setup
            if(options.bullets) { 
              var bulletHTML = '<ul class="orbit-bullets"></ul>';              
              orbitWrapper.append(bulletHTML);
              var bullets = orbitWrapper.children('ul.orbit-bullets');
              for(i=0; i<numberSlides; i++) {
                var liMarkup = $('<li>'+(i+1)+'</li>');
                if(options.bulletThumbs) {
                  var  thumbName = slides.eq(i).data('thumb');
                  if(thumbName) {
                    var liMarkup = $('<li class="has-thumb">'+i+'</li>')
                    liMarkup.css({"background" : "url("+options.bulletThumbLocation+thumbName+") no-repeat"});
                  }
                } 
                orbitWrapper.children('ul.orbit-bullets').append(liMarkup);
                liMarkup.data('index',i);
                liMarkup.click(function() {
                  stopClock();
                  shift($(this).data('index'));
                });
              }
              setActiveBullet();
            }
            
            //Bullet Nav Execution
          function setActiveBullet() { 
            if(!options.bullets) { return false; } else {
              bullets.children('li').removeClass('active').eq(activeSlide).addClass('active');
            }
          }
          
// ====================
// ! SHIFT ANIMATIONS   
// ====================
            
            //Animating the shift!
            function shift(direction) {
              //remember previous activeSlide
                var prevActiveSlide = activeSlide,
                  slideDirection = direction;
                //exit function if bullet clicked is same as the current image
                if(prevActiveSlide == slideDirection) { return false; }
                //reset Z & Unlock
                function resetAndUnlock() {
                    slides
                      .eq(prevActiveSlide)
                      .css({"z-index" : 1});
                    unlock();
                    options.afterSlideChange.call(this);
                }
                if(slides.length == "1") { return false; }
                if(!locked) {
                    lock();
           //deduce the proper activeImage
                    if(direction == "next") {
                        activeSlide++
                        if(activeSlide == numberSlides) {
                            activeSlide = 0;
                        }
                    } else if(direction == "prev") {
                        activeSlide--
                        if(activeSlide < 0) {
                            activeSlide = numberSlides-1;
                        }
                    } else {
                        activeSlide = direction;
                        if (prevActiveSlide < activeSlide) { 
                            slideDirection = "next";
                        } else if (prevActiveSlide > activeSlide) { 
                            slideDirection = "prev"
                        }
                    }
                    //set to correct bullet
                     setActiveBullet();  
                     
                    //set previous slide z-index to one below what new activeSlide will be
                    slides
                      .eq(prevActiveSlide)
                      .css({"z-index" : 2});    
                    
                    //fade
                    if(options.animation == "fade") {
                        slides
                          .eq(activeSlide)
                          .css({"opacity" : 0, "z-index" : 3})
                          .animate({"opacity" : 1}, options.animationSpeed, resetAndUnlock);
                    }
                    //horizontal-slide
                    if(options.animation == "horizontal-slide") {
                        if(slideDirection == "next") {
                            slides
                              .eq(activeSlide)
                              .css({"left": orbitWidth, "z-index" : 3})
                              .animate({"left" : 0}, options.animationSpeed, resetAndUnlock);
                        }
                        if(slideDirection == "prev") {
                            slides
                              .eq(activeSlide)
                              .css({"left": -orbitWidth, "z-index" : 3})
                              .animate({"left" : 0}, options.animationSpeed, resetAndUnlock);
                        }
                    }
                    //vertical-slide
                    if(options.animation == "vertical-slide") { 
                        if(slideDirection == "prev") {
                            slides
                              .eq(activeSlide)
                              .css({"top": orbitHeight, "z-index" : 3})
                              .animate({"top" : 0}, options.animationSpeed, resetAndUnlock);
                        }
                        if(slideDirection == "next") {
                            slides
                              .eq(activeSlide)
                              .css({"top": -orbitHeight, "z-index" : 3})
                              .animate({"top" : 0}, options.animationSpeed, resetAndUnlock);
                        }
                    }
                    //push-over
                    if(options.animation == "horizontal-push") {
                        if(slideDirection == "next") {
                            slides
                              .eq(activeSlide)
                              .css({"left": orbitWidth, "z-index" : 3})
                              .animate({"left" : 0}, options.animationSpeed, resetAndUnlock);
                            slides
                              .eq(prevActiveSlide)
                              .animate({"left" : -orbitWidth}, options.animationSpeed);
                        }
                        if(slideDirection == "prev") {
                            slides
                              .eq(activeSlide)
                              .css({"left": -orbitWidth, "z-index" : 3})
                              .animate({"left" : 0}, options.animationSpeed, resetAndUnlock);
              slides
                              .eq(prevActiveSlide)
                              .animate({"left" : orbitWidth}, options.animationSpeed);
                        }
                    }
                    setCaption();
                } //lock
            }//orbit function
        });//each call
    }//orbit plugin call
})(jQuery);