define([
    "../app/Content",
    "../app/Path",
    "../app/Router",
    "../model/classes/responses",
    "../model/classes/surveyRuns",
    "../widgets/LineWithActionsWidget",
    "./_ObjectPage",
    "dojo/Deferred",
    "dojo/_base/array",
    "dojo/_base/declare",
    "dojo/_base/event",
    "dojo/_base/lang",
    "dojo/when",
    "require",
    "dojo/text!./templates/surveyRun.html"
], function(Content, Path, Router, responses, surveyRuns, LineWithActionsWidget, _ObjectPage, Deferred, array, declare, event, lang, when, require, template) {
    return declare([_ObjectPage],{
        contextRequire: require,
        templateString: template,
        classStore: surveyRuns,
        _isValid: false,
        startup: function() {
            if ( this._started ) { return; }
            this.inherited(arguments);
            this.own(this.surveyRunWidget.on("change",lang.hitch(this,'_handlePropChange')));
            this._load();
        },
        _refresh: function(initial) {
            if ( initial === true ) {
                this.surveySummaryWidget.set('value',this.object.survey,null);
                this.surveyRunWidget.set('value',this.object,null);
                this._loadResponses();
            }
            this.titleNode.innerHTML = this.object.title || "";
            if ( this.object.mode === "open" ) {
                this.runURLNode.innerHTML =
                    this._link(this._buildGeneralURL(this.object));
            } else {
                this.runURLNode.innerHTML =
                    "No general URL. Add individual respondents below.";
            }
        },
        _loadResponses: function() {
            responses.query({surveyRunId:surveyRuns.getId(this.object)})
            .then(lang.hitch(this,function(allResponses){
                array.forEach(allResponses, function(response){
                    var actions = {}, w;
                    if ( !response.publicationDate ) {
                        actions.Delete = {
                            callback: lang.hitch(this,function(){
                                // We cannot bind _onDeleteResponse
                                // directly, because of the
                                // initialization problem with w. We
                                // need it in the handler, but we need
                                // to pass the handler as an argument
                                // on the creation of w.
                                this._onDeleteResponse(response,w);
                            }),
                            properties: {
                                icon: 'Delete',
                                title: "Delete response"
                            }
                        };
                    }
                    w = new LineWithActionsWidget({
                        actions: actions
                    });
                    var rid = responses.getId(response);
                    w.set('title',this._link(this._buildResponseURL(response),rid),rid);
                    w.placeAt(this.responsesNode);
                }, this);
            }));
        },
        _onDeleteResponse: function(response,w) {
            if ( !confirm("Are you sure you want to delete this survey response?") ) {
                return;
            }
            responses.remove(response)
            .then(function(){
                w.destroy();
            });
        },
        _handlePropChange: function(e) {
            this._updateObject();
            this.markDirty();
            this._refresh();
        },
        _buildGeneralURL: function(surveyRun) {
            return 'response.html#'+Path.format(surveyRuns.getObjectPath(surveyRun),{secret:surveyRun.secret});
        },
        _buildResponseURL: function(response) {
            return 'response.html#'+Path.format(responses.getObjectPath(response),{secret:response.secret});
        },
        _link: function(url,label) {
            return '<a target="_blank" href="'+url+'">'+(label || url)+'</a>';
        },
        _save: function() {
            if ( this._updateObject() ) {
                return this.inherited(arguments);
            } else {
                return new Deferred().reject({error:"Please correct invalid values."});
            }
        },
        _updateObject: function() {
            this._isValid = this.surveyRunWidget.validate();
            lang.mixin(this.object,this.surveyRunWidget.get('value'));
            return this._isValid;
        },
        _onSave: function(evt) {
            this._save();
            if ( evt ) { event.stop(evt); }
            return false;
        },
        _onSaveAndClose: function(evt) {
            this._save()
            .then(function() { 
                Router.go(surveyRuns.getCollectionPath());
            });
            if ( evt ) { event.stop(evt); }
            return false;
        },
        _onDiscard: function(evt) {
            this.markClean();
            Router.go(surveyRuns.getCollectionPath());
            if ( evt ) { event.stop(evt); }
            return false;
        },
        markDirty: function() {
            this.saveBtn.set('disabled',!this._isValid);
            this.saveAndCloseBtn.set('disabled',!this._isValid);
            this.discardBtn.set('label','Discard & Close');
            this.inherited(arguments);
        },
        markClean: function() {
            this.saveBtn.set('disabled',true);
            this.saveAndCloseBtn.set('disabled',true);
            this.discardBtn.set('label','Close');
            this.inherited(arguments);
        }
    });
});