/*@
Ox.VideoPlayer <f> Generic Video Player Element
    (options, self) -> <o> Video Player
    options <o> Options
        subtitles <s|[o]> URL or SRT or subtitles object
            start <n> Start (sec)
            stop <n> Stop (sec)
            text <s> Text
@*/

Ox.VideoPlayer = function(options, self) {

    self = self || {};
    var that = Ox.Element({}, self)
        .defaults({
            autoplay: false,
            height: 192,
            logoLink: '',
            logoTitle: '',
            logoURL: '',
            position: 0,
            showControls: false,
            showVolume: false,
            subtitles: [],
            timelineURL: '',
            title: '',
            videoURL: '',
            width: 256
        })
        .options(options || {})
        .css({
            position: 'absolute',
            width: self.options.width + 'px',
            height: self.options.height + 'px'
            //background: 'red'
        })
        .bind({
            mouseenter: showControls,
            mouseleave: hideControls
        });

    if (Ox.isString(self.options.subtitles)) {
        if (self.options.subtitles.indexOf('\n') > -1) {
            self.options.subtitles = Ox.parseSRT(self.options.subtitles);
        } else {
            Ox.get(self.options.subtitles, function(data) {
                self.options.subtitles = Ox.parseSRT(data);
            });
            //self.options.subtitles = [];
        }
    }

    self.buffered = [];
    self.controlsTimeout;
    self.dragTimeout;

    self.controlsHeight = 16;
    self.outerTrackWidth = self.options.width - 96;
    self.innerTrackWidth = self.outerTrackWidth - self.controlsHeight;
    self.markerOffset = -self.innerTrackWidth - 8;

    self.$video = Ox.VideoElement({
            height: self.options.height,
            paused: true,
            url: self.options.videoURL,
            width: self.options.width
        })
        .css({
            position: 'absolute',
        })
        .bindEvent({
            loadedmetadata: loadedmetadata,
            paused: function(data) {
                // called when playback ends
                /*
                self.$playButton.toggleTitle();
                self.$positionMarkerRing.css({
                    borderColor: 'rgba(255, 255, 255, 0.5)'
                });
                */
            },
            playing: function(data) {
                setPosition(data.position);
            },
            progress: function(data) {
                var buffered = data.video.buffered;
                for (var i = 0; i < buffered.length; i++) {
                    self.buffered[i] = [buffered.start(i), buffered.end(i)];
                    // fixme: firefox weirdness
                    if (self.buffered[i][0] > self.buffered[i][1]) {
                        self.buffered[i][0] = 0;
                    }
                    //Ox.print(i, self.buffered[i][0], self.buffered[i][1])
                }
                self.$buffered.attr({
                    src: getBufferedImageURL()
                })
                //self.$bar.html(Ox.formatDuration(data.video.buffered.end(data.video.buffered.length - 1)))
            },
            seeked: hideLoadingIcon,
            seeking: showLoadingIcon
        })
        .appendTo(that);

    if (self.options.title) {
        self.$titlebar = $('<div>')
            .css({
                position: 'absolute',
                width: self.options.width + 'px',
                height: '15px',
                paddingTop: '1px',
                textAlign: 'center'
            })
            .css({
                backgroundImage: '-moz-linear-gradient(top, rgba(64, 64, 64, 0.5), rgba(0, 0, 0, 0.5))'
            })
            .css({
                backgroundImage: '-webkit-linear-gradient(top, rgba(64, 64, 64, 0.5), rgba(0, 0, 0, 0.5))'
            })
            .html(self.options.title)
            .appendTo(that.$element);
    }

    self.$loadingIcon = $('<img>')
        .attr({
            src: Ox.UI.getImagePath('symbolLoadingAnimated.svg').replace('/classic/', '/modern/')
        })
        .css({
            position: 'absolute',
            left: parseInt(self.options.width / 2) - 16 + 'px', // fixme
            top: parseInt(self.options.height / 2) - 16 + 'px',
            width: '32px',
            height: '32px'
        })
        .appendTo(that.$element);

    self.$subtitle = $('<div>')
        //.addClass('OxSubtitle')
        .css({
            position: 'absolute',
            left: 0,
            right: 0,
            textAlign: 'center',
            textShadow: 'rgba(0, 0, 0, 1) 0 0 4px',
            color: 'rgb(255, 255, 255)'
        })
        .appendTo(that.$element);

    setSubtitleSize();

    self.$controls = Ox.Bar({
            size: self.controlsHeight
        })
        .css({
            position: 'absolute',
            bottom: 0,
            width: self.options.width + 'px',
        })
        .css({
            backgroundImage: '-moz-linear-gradient(top, rgba(64, 64, 64, 0.5), rgba(0, 0, 0, 0.5))'
        })
        .css({
            backgroundImage: '-webkit-linear-gradient(top, rgba(64, 64, 64, 0.5), rgba(0, 0, 0, 0.5))'
        })
        .appendTo(that);

    self.$buttons = Ox.Element()
        .css({
            float: 'left',
            width: '48px'
        })
        .appendTo(self.$controls);

    self.$playButton = Ox.Button({
            style: 'symbol',
            title: [
                {id: 'play', title: 'play'},
                {id: 'pause', title: 'pause'}
            ],
            tooltip: ['Play', 'Pause'],
            type: 'image'
        })
        .css({
            borderRadius: 0
        })
        .bindEvent('click', togglePlay)
        .appendTo(self.$buttons);

    self.$muteButton = Ox.Button({
            style: 'symbol',
            title: [
                {id: 'mute', title: 'mute'},
                {id: 'unmute', title: 'unmute'}
            ],
            tooltip: ['Mute', 'Unmute'],
            type: 'image'
        })
        .css({
            borderRadius: 0
        })
        .bindEvent('click', toggleMute)
        .appendTo(self.$buttons);

    self.$menuButton = Ox.Button({
            id: 'select',
            style: 'symbol',
            title: 'select',
            tooltip: ['Menu'],
            type: 'image'
        })
        .css({
            borderRadius: 0
        })
        .bindEvent('click', togglePlay)
        .appendTo(self.$buttons);

    self.$outerTrack = Ox.Element()
        .css({
            float: 'left',
            width: self.outerTrackWidth + 'px',
            height: self.controlsHeight + 'px',
            background: 'rgba(0, 0, 0, 0.75)',
            borderRadius: self.controlsHeight / 2 + 'px'
        })
        /*
        .css({
            backgroundImage: '-moz-linear-gradient(top, rgba(0, 0, 0, 0.75), rgba(64, 64, 64, 0.75))'
        })
        .css({
            backgroundImage: '-webkit-linear-gradient(top, rgba(0, 0, 0, 0.75), rgba(64, 64, 64, 0.75))'
        })
        */
        .appendTo(self.$controls);
    
    self.$innerTrack = Ox.Element()
        .css({
            float: 'left',
            width: self.innerTrackWidth + 'px',
            height: self.controlsHeight + 'px',
            marginLeft: self.controlsHeight / 2 + 'px'
        })
        .appendTo(self.$outerTrack);

    self.$timeline = $('<img>')
        .attr({
            src: self.options.timelineURL
        })
        .css({
            float: 'left',
            width: self.innerTrackWidth + 'px',
            height: self.controlsHeight + 'px'
        })
        .appendTo(self.$innerTrack.$element);

    self.$buffered = $('<img>')
        .attr({
            src: getBufferedImageURL()
        })
        .css({
            float: 'left',
            marginLeft: -self.innerTrackWidth + 'px',
            width: self.innerTrackWidth + 'px',
            height: self.controlsHeight + 'px',
        })
        .appendTo(self.$innerTrack.$element);

    self.$positionMarker = $('<div>')
        .css({
            float: 'left',
            width: '14px',
            height: '14px',
            marginLeft: self.markerOffset + 'px',
            border: '1px solid rgba(0, 0, 0, 0.5)',
            borderRadius: '8px'
        })
        .append(
            self.$positionMarkerRing = $('<div>')
                .css({
                    width: '10px',
                    height: '10px',
                    border: '2px solid rgba(255, 255, 255, 0.5)',
                    borderRadius: '7px',
                })
                .append(
                    $('<div>')
                        .css({
                            width: '8px',
                            height: '8px',
                            border: '1px solid rgba(0, 0, 0, 0.5)',
                            borderRadius: '5px',
                        })
                )
        )
        .appendTo(self.$outerTrack.$element);

    self.$trackInterface = Ox.Element()
        .css({
            float: 'left',
            width: self.outerTrackWidth + 'px',
            height: self.controlsHeight + 'px',
            marginLeft: - self.outerTrackWidth + 'px'
        })
        .appendTo(self.$controls);

    self.$tooltip = Ox.Tooltip({
        animate: false
    });

    self.$position = $('<div>')
        .css({
            float: 'left',
            width: '44px',
            height: '12px',
            padding: '2px',
            fontSize: '9px',
            textAlign: 'center'
        })
        .html(Ox.formatDuration(self.options.position))
        .bind({
            click: function() {
                if (!self.$video.paused()) {
                    self.wasPlaying = true;
                    self.$video.pause();
                    self.$playButton.toggleTitle();
                }
                self.$position.hide();
                self.$positionInput
                    .options({
                        value: Ox.formatDuration(self.options.position)
                    })
                    .show()
                    .focusInput(false);
            }
        })
        .appendTo(self.$controls.$element)

    self.$positionInput = Ox.Input({
            value: Ox.formatDuration(self.options.position),
            width: 48
        })
        .css({
            float: 'left',
            background: 'rgba(0, 0, 0, 0)',
            MozBoxShadow: '0 0 0',
            WebkitBoxShadow: '0 0 0'
        })
        .bindEvent({
            blur: submitPositionInput,
            change: submitPositionInput,
            //submit: submitPositionInput
        })
        .hide()
        .appendTo(self.$controls.$element);

    self.$positionInput.children('input').css({
            width: '42px',
            height: '16px',
            padding: '0 3px 0 3px',
            border: '0px',
            borderRadius: '8px',
            fontSize: '9px',
            color: 'rgb(255, 255, 255)'
        })
        .css({
            background: '-moz-linear-gradient(top, rgba(0, 0, 0, 0.5), rgba(64, 64, 64, 0.5))'
        })
        .css({
            background: '-webkit-linear-gradient(top, rgba(0, 0, 0, 0.5), rgba(64, 64, 64, 0.5))'
        });

    function submitPositionInput() {
        self.$positionInput.hide();
        self.$position.html('').show();
        setPosition(parsePositionInput(self.$positionInput.options('value')));
        self.$video.position(self.options.position);
        if (self.wasPlaying) {
            self.$video.play();
            self.$playButton.toggleTitle();
            self.wasPlaying = false;
        }
    }

    function parsePositionInput(str) {
        var position,
            split = str.split(':').reverse();
        while (split.length > 3) {
            split.pop();
        }
        position = split.reduce(function(prev, curr, i) {
            return prev + (parseFloat(curr) || 0) * Math.pow(60, i);
        }, 0)
        return Ox.limit(position, 0, self.duration);
    }

    function getPosition(e) {
        // fixme: no offsetX in firefox???
        if ($.browser.mozilla) {
            //Ox.print(e, e.layerX - 56)
            return Ox.limit(
                (e.layerX - 48 - self.controlsHeight / 2) / self.innerTrackWidth * self.duration,
                0, self.duration
            );
        } else {
            /*Ox.print(e.offsetX, Ox.limit(
                (e.offsetX - self.controlsHeight / 2) / self.innerTrackWidth * self.duration,
                0, self.duration
            ))*/
            return Ox.limit(
                (e.offsetX - self.controlsHeight / 2) / self.innerTrackWidth * self.duration,
                0, self.duration
            );
        }
    } 

    function getBufferedImageURL() {
        var width = self.innerTrackWidth,
            height = self.controlsHeight,
            $canvas = $('<canvas>')
                .attr({
                    width: width,
                    height: height,
                }),
            canvas = $canvas[0],
            context = canvas.getContext('2d');
        //Ox.print(width, height)
        context.fillStyle = 'rgba(255, 0, 0, 0.5)';
        context.fillRect(0, 0, width, height);
        var imageData = context.getImageData(0, 0, width, height),
            data = imageData.data;

        self.buffered.forEach(function(range) {
            var left = Math.round(range[0] * width / self.duration),
                right = Math.round(range[1] * width / self.duration);
            Ox.loop(left, right, function(x) {
                Ox.loop(height, function(y) {
                    index = x * 4 + y * 4 * width;
                    data[index + 3] = 0;
                });
            });
        });
        context.putImageData(imageData, 0, 0);
        return canvas.toDataURL();
    }

    function getSubtitle() {
        var subtitle = '';
        Ox.forEach(self.options.subtitles, function(v) {
            if (
                v['in'] <= self.options.position &&
                v.out > self.options.position
            ) {
                subtitle = v.text;
                return false;
            }
        });
        return subtitle;
    }

    function hideControls() {
        Ox.print('!!!!!!', self.$positionInput.hasFocus())
        if (!self.$positionInput.hasFocus()) {
            self.controlsTimeout = setTimeout(function() {
                // fixme: use class
                self.$titlebar.animate({
                    opacity: 0
                }, 250);
                self.$controls.animate({
                    opacity: 0
                }, 250);
            }, 1000);
        }
    }

    function hideLoadingIcon() {
        self.$loadingIcon.animate({
            opacity: 0
        }, 0);
    }

    function loadedmetadata(data) {
        //self.$position.html(Ox.formatDuration(data.video.duration))
        //Ox.print('!!!!', data.video.width, data.video.height, data.video.videoWidth, data.video.videoHeight)
        self.duration = data.video.duration;
        //Ox.print('DURATION', Ox.formatDuration(self.duration));
        hideLoadingIcon();
        that.gainFocus().bindEvent({
            key_space: function() {
                self.$playButton.toggleTitle();
                togglePlay();
            }
        });
        self.$trackInterface
            .bind({
                mousedown: mousedownTrack,
                mouseleave: mouseleaveTrack,
                mousemove: mousemoveTrack,
            })
            .bindEvent({
                drag: dragTrack,
                dragpause: dragpauseTrack,
                dragend: dragpauseTrack
            });
    }

    function dragTrack(e) {
        setPosition(getPosition(e));
        if (self.dragTimeout) {
            clearTimeout(self.dragTimeout);
            self.dragTimeout = 0;
        }
    }

    function dragpauseTrack(e) {
        self.$video.position(self.options.position);
    }

    function mousedownTrack(e) {
        setPosition(getPosition(e));
        self.$video.position(self.options.position);
    }

    function mouseleaveTrack(e) {
        self.$tooltip.hide();
    }

    function mousemoveTrack(e) {
        self.$tooltip.options({
            title: Ox.formatDuration(getPosition(e))
        }).show(e.clientX, e.clientY);
    }

    function showControls() {
        clearTimeout(self.controlsTimeout);
        self.$titlebar.animate({
            opacity: 1
        }, 250);
        self.$controls.animate({
            opacity: 1
        }, 250);
    }

    function setPosition(position) {
        self.options.position = position;
        //Ox.print(-self.barWidth - 4 + self.barWidth * position / self.duration)
        setSubtitle();
        self.$positionMarker.css({
            marginLeft: self.innerTrackWidth * position / self.duration + self.markerOffset + 'px',
        });
        self.$position.html(Ox.formatDuration(position));
    }

    function setSubtitle() {
        var subtitle = getSubtitle();
        if (subtitle != self.subtitle) {
            self.subtitle = subtitle;
            self.$subtitle.html(
                Ox.highlight(self.subtitle, self.options.find, 'Ox.Highlight')
                .replace(/\n/g, '<br/>')
            );
        }
    }

    function setSubtitleSize() {
        self.$subtitle.css({
            bottom: parseInt(self.controlsHeight + self.options.height / 16) + 'px',
            width: self.options.width + 'px',
            fontSize: parseInt(self.options.height / 20) + 'px',
            WebkitTextStroke: (self.options.height / 1000) + 'px rgb(0, 0, 0)'
        });
    }

    function showLoadingIcon() {
        self.$loadingIcon.animate({
            opacity: 1
        }, 0);
    }
    function toggleMute() {
        self.$video.toggleMute();
    }

    function togglePlay() {
        self.$video.togglePlay();
        self.$positionMarkerRing.css({
            borderColor: 'rgba(255, 255, 255, ' + (self.$video.paused() ? 0.5 : 1) + ')'
        });
    }

    return that;

};