IriSP.Model = {

    SOURCE_STATUS_EMPTY : 0,

    SOURCE_STATUS_WAITING : 1,

    SOURCE_STATUS_READY : 2,

    IDS_AUTO_INCREMENT : 0,

    IDS_PREFIX : 'autoid-'

}

/* */

IriSP.Model.List = function() {

    this.contents = {};

}

IriSP.Model.List.prototype.toString = function() {

    return 'List of Elements, length=' + this.length();

}

IriSP.Model.List.prototype.keys = function() {

    return IriSP._(this.contents).keys();

}

IriSP.Model.List.prototype.length = function() {

    return this.keys().length;

}

IriSP.Model.List.prototype.getElement = function(_id) {

    return this.contents[_id];

}

IriSP.Model.List.prototype.getFirst = function() {

    return this.contents(this.keys()[0]);

}

IriSP.Model.List.prototype.each = function(_callback) {

    var _this = this;

    IriSP._(this.contents).each(function(_element, _id) {

        _callback.call(_this, _element, _id);

    });

}

IriSP.Model.List.prototype.map = function(_callback) {

    var _this = this;

    return IriSP._(this.contents).map(function(_element, _id) {

        return _callback.call(_this, _element, _id);

    });

}

IriSP.Model.List.prototype.addElement = function(_element) {

    if ( typeof _element.id === "undefined" ) {

        IriSP.Model.AUTO_INCREMENT++;

        _element.id = IriSP.Model.IDS_PREFIX + IriSP.Model.IDS_AUTO_INCREMENT;

    }

    this.contents[_element.id] = _element;

    if ( this.hasParent ) {

        this.parent.addElement(_element);

    }

}

IriSP.Model.List.prototype.addElements = function(_list) {

    var _this = this;

    _list.each(function(_element) {

        _this.addElement(_element);

    });

}

/* */

IriSP.Model.Time = function(_milliseconds) {

    this.milliseconds = parseInt(typeof _milliseconds !== "undefined" ? _milliseconds : 0);

}

IriSP.Model.Time.prototype.setSeconds = function(_seconds) {

    this.milliseconds = 1000 * _seconds;

}

IriSP.Model.Time.prototype.getSeconds = function() {

    return Math.floor(this.milliseconds / 1000);

}

IriSP.Model.Time.prototype.getHMS = function() {

    var _totalSeconds = Math.abs(this.getSeconds());

    return {

        hours : Math.floor(_totalSeconds / 3600),

        minutes : (Math.floor(_totalSeconds / 60) % 60),

        seconds : _totalSeconds % 60

    } 

}

IriSP.Model.Time.prototype.toString = function() {

    function pad(_n) {

        var _res = _n.toString();

        while (_res.length < 2) {

            _res = '0' + _res;

        }

        return _res;

    }

    var _hms = this.getHMS(),

        _res = '';

    if (_hms.hours) {

        _res += pad(_hms.hours) + ':'

    }

    _res += pad(_hms.minutes) + ':' + pad(_hms.seconds);

    return _res;

}

IriSP.Model.BrokenReference = function(_elementType, _idRef) {

    this.id = _idRef;

    this.elementType = 'brokenReference';

    this.originalElementType = _elementType;

    this.isSolved = false;

}

IriSP.Model.BrokenReference.prototype.toString = function() {

    return 'Broken reference to ' + IriSP.Model.ELEMENT_TYPES[_elementType].element_str + ', id=' + this.id;

}

IriSP.Model.BrokenReference.prototype.tryToSolve = function(_container) {

    if (this.isSolved) {

        return this.solution;

    }

    var _obj = _container.getElement(this.originalElementType, this.id);

    if (typeof _obj !== "undefined") {

        this.isSolved = true;

        this.solution = _obj;

        return this.solution;

    } else {

        return undefined;

    }

}

/* */

IriSP.Model.Element = function(_id, _source) {

    this.elementType = 'element';

    if (typeof _id === "undefined") {

        IriSP.Model.IDS_AUTO_INCREMENT++;

        this.id = IriSP.Model.IDS_PREFIX + IriSP.Model.AUTO_INCREMENT;

    } else {

        this.id = _id;

    }

    this.source = _source;

    this.title = "";

    this.description = "";

}

IriSP.Model.Element.prototype.toString = function() {

    return this.elementType + ', id=' + this.id + ', title="' + this.title + '"';

}

IriSP.Model.Element.prototype.getReference = function(_container, _elementType, _idRef) {

    var _obj = _container.getElement(_elementType, _idRef);

    if (typeof _obj === "undefined") {

        _obj = new IriSP.Model.BrokenReference(_elementType, _idRef);

    }

    _obj.backReference(this);

    return _obj;

IriSP.Model.Element.prototype.backReference = function(_object) {

    if (typeof this.referencedBy === "undefined") {

        this.referencedBy = {}

    }

    if (typeof this.referencedBy[_object.elementType] === "undefined") {

        this.referencedBy[_object.elementType] = new IriSP.Model.List();

    }

    this.referencedBy[_object.elementType].addElement(_object);

}

IriSP.Model.Element.prototype.otmCrossReference = function(_container, _elementType, _idRef) {

    if (typeof this.referencing === "undefined") {

        this.referencing = {};

    }

    this.referencing[_elementType] = this.getReference(_container, _elementType, _idRef);

}

IriSP.Model.Element.prototype.mtmCrossReference = function(_container, _elementType, _idRefList) {

    if (typeof this.referencing === "undefined") {

        this.referencing = {};

    }

    this.referencing[_elementType] = new IriSP.Model.List;

    for (var _i = 0; _i < _idRefList.length; _i++) {

        this.referencing[_elementType].addElement(this.getReference(_container, _elementType, _idRefList[_i]));

    }

}

/* */

IriSP.Model.Media = function(_id, _source) {

    IriSP.Model.Element.call(this, _id, _source);

    this.elementType = 'media';

    this.duration = new IriSP.Model.Time();

    this.url = '';

}

IriSP.Model.Media.prototype = new IriSP.Model.Element(null);

IriSP.Model.Media.prototype.setDuration = function(_durationMs) {

    this.duration.milliseconds = _durationMs;

}

/* */

IriSP.Model.AnnotationType = function(_id, _source) {

    IriSP.Model.Element.call(this, _id, _source);

    this.elementType = 'annotationType';

}

IriSP.Model.AnnotationType.prototype = new IriSP.Model.Element(null);

/* Annotation

 * */

IriSP.Model.Annotation = function(_id, _source) {

    IriSP.Model.Element.call(this, _id, _source);

    this.elementType = 'annotation';

    this.begin = new IriSP.Model.Time();

    this.end = new IriSP.Model.Time();

}

IriSP.Model.Annotation.prototype = new IriSP.Model.Element(null);

IriSP.Model.Annotation.prototype.setBegin = function(_beginMs) {

    this.begin.milliseconds = _beginMs;

}

IriSP.Model.Annotation.prototype.setEnd = function(_beginMs) {

    this.end.milliseconds = _beginMs;

}

IriSP.Model.Annotation.prototype.setMedia = function(_idRef, _container) {

    this.otmCrossReference(_container, "media" , _idRef);

}

IriSP.Model.Annotation.prototype.getMedia = function() {

    return this.referencing.media;

}

IriSP.Model.Annotation.prototype.setAnnotationType = function(_idRef, _container) {

    this.otmCrossReference(_container, "annotationType" , _idRef);

}

IriSP.Model.Annotation.prototype.getAnnotationType = function() {

    return this.referencing.annotation_type;

}

/* A Container contains lists of elements. It corresponds to the root of Cinelab

 * */

IriSP.Model.Container = function(_parent) {

    this.hasParent = (typeof _parent !== "undefined");

    if (this.hasParent) {

        this.parent = _parent;

    }

    this.contents = {}

}

IriSP.Model.Container.prototype.each = function(_callback) {

    var _this = this;

    IriSP._(this.contents).each(function(_element, _id) {

        _callback.call(_this, _element, _id);

    });

}

IriSP.Model.Container.prototype.map = function(_callback) {

    var _this = this;

    return IriSP._(this.contents).map(function(_element, _id) {

        return _callback.call(_this, _element, _id);

    });

}

IriSP.Model.Container.prototype.addList = function(_listId, _contents) {

    if (this.hasParent) {

        this.parent.addList(_listId, _contents);

    }

    if (typeof this.contents[_listId] === "undefined") {

        this.contents[_listId] = _contents;

    } else {

        this.contents[_listId].addElements(_contents);

    }

}

IriSP.Model.Container.prototype.getList = function(_listId) {

    if (typeof this.contents[_listId] === "undefined") {

        if (this.hasParent) {

            return this.parent.getList(_listId);

        } else {

            return undefined;

        }

    } else {

        return this.contents[_listId];

    }

}

IriSP.Model.Container.prototype.getElement = function(_listId, _elId) {

    var _list = this.getList(_listId);

    return (typeof _list !== "undefined" ? _list.getElement(_elId) : undefined);

}

IriSP.Model.Container.prototype.getMedias = function(_contents) {

    return this.getList("media");

}

IriSP.Model.Container.prototype.getAnnotations = function(_contents) {

    return this.getList("annotation");

}

IriSP.Model.Container.prototype.setCurrentMediaById = function(_idRef) {

    if (typeof _idRef !== "undefined") {

        this.currentMedia = this.getElement("media", _idRef);

    }

}

IriSP.Model.Container.prototype.setDefaultCurrentMedia = function() {

    if (typeof this.currentMedia === "undefined") {

        this.currentMedia = this.getMedias().getFirst();

    }

}

/* */

IriSP.Model.Source = function(_directory, _url, _serializer) {

    this.status = IriSP.Model.SOURCE_STATUS_EMPTY;

        throw "Error : Model.Source called with no parent directory";