";var s=""+o+"";try{this.myIFrame.doc.open(),this.myIFrame.doc.write(s),this.myIFrame.doc.close()}catch(t){Z("frame writing exception"),t.stack&&Z(t.stack),Z(t)}}}return t.createIFrame_=function(){var t=document.createElement("iframe");if(t.style.display="none",!document.body)throw"Document body has not initialized. 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Closing connection.");var e=t.message||t.data;e&&r.log_(e),r.onClosed_()}},t.prototype.start=function(){},t.forceDisallow=function(){t.forceDisallow_=!0},t.isAvailable=function(){var e=!1;if("undefined"!=typeof navigator&&navigator.userAgent){var n=navigator.userAgent.match(/Android ([0-9]{0,}\.[0-9]{0,})/);n&&1parseFloat(n[1])&&(e=!0)}return!e&&null!==wn&&!t.forceDisallow_},t.previouslyFailed=function(){return B.isInMemoryStorage||!0===B.get("previous_websocket_failure")},t.prototype.markConnectionHealthy=function(){B.remove("previous_websocket_failure")},t.prototype.appendFrame_=function(t){if(this.frames.push(t),this.frames.length==this.totalFrames){var e=this.frames.join("");this.frames=null;var n=m(e);this.onMessage(n)}},t.prototype.handleNewFrameCount_=function(t){this.totalFrames=t,this.frames=[]},t.prototype.extractFrameCount_=function(t){if(s(null===this.frames,"We already have a frame buffer"),6>=t.length){var e=+t;if(!isNaN(e))return this.handleNewFrameCount_(e),null}return this.handleNewFrameCount_(1),t},t.prototype.handleIncomingFrame=function(t){if(null!==this.mySock){var e=t.data;if(this.bytesReceived+=e.length,this.stats_.incrementCounter("bytes_received",e.length),this.resetKeepAlive(),null!==this.frames)this.appendFrame_(e);else{var n=this.extractFrameCount_(e);null!==n&&this.appendFrame_(n)}}},t.prototype.send=function(t){this.resetKeepAlive();var e=C(t);this.bytesSent+=e.length,this.stats_.incrementCounter("bytes_sent",e.length);var n=ct(e,16384);1=this.secondaryResponsesRequired_?(this.log_("Secondary connection is healthy."),this.isHealthy_=!0,this.secondaryConn_.markConnectionHealthy(),this.proceedWithUpgrade_()):(this.log_("sending ping on secondary."),this.secondaryConn_.send({t:"c",d:{t:"p",d:{}}}))},t.prototype.proceedWithUpgrade_=function(){this.secondaryConn_.start(),this.log_("sending client ack on secondary"),this.secondaryConn_.send({t:"c",d:{t:"a",d:{}}}),this.log_("Ending transmission on primary"),this.conn_.send({t:"c",d:{t:"n",d:{}}}),this.tx_=this.secondaryConn_,this.tryCleanupConnection()},t.prototype.onPrimaryMessageReceived_=function(t){var e=ut("t",t),n=ut("d",t);"c"==e?this.onControl_(n):"d"==e&&this.onDataMessage_(n)},t.prototype.onDataMessage_=function(t){this.onPrimaryResponse_(),this.onMessage_(t)},t.prototype.onPrimaryResponse_=function(){this.isHealthy_||(this.primaryResponsesRequired_--,0>=this.primaryResponsesRequired_&&(this.log_("Primary connection is healthy."),this.isHealthy_=!0,this.conn_.markConnectionHealthy()))},t.prototype.onControl_=function(t){var e=ut("t",t);if("d"in t){var n=t.d;if("h"===e)this.onHandshake_(n);else if("n"===e){this.log_("recvd end transmission on primary"),this.rx_=this.secondaryConn_;for(var r=0;rh.status){try{t=m(h.responseText)}catch(t){rt("Failed to parse JSON response for "+a+": "+h.responseText)}n(null,t)}else 401!==h.status&&404!==h.status&&rt("Got unsuccessful REST response for "+a+" Status: "+h.status),n(h.status);n=null}},h.open("GET",a,!0),h.send()})},e}(Nn),On=function(){function t(t,e,n){var r=this;this.repoInfo_=t,this.app=n,this.dataUpdateCount=0,this.statsListener_=null,this.eventQueue_=new pn,this.nextWriteId_=1,this.interceptServerDataCallback_=null,this.onDisconnect_=new Pe,this.persistentConnection_=null;var i=new on(n);if(this.stats_=an.getCollection(t),e||vt())this.server_=new Dn(this.repoInfo_,this.onDataUpdate_.bind(this),i),setTimeout(this.onConnectStatus_.bind(this,!0),0);else{var o=n.options.databaseAuthVariableOverride;if(void 0!==o&&null!==o){if("object"!=typeof o)throw new Error("Only objects are supported for option databaseAuthVariableOverride");try{C(o)}catch(t){throw new Error("Invalid authOverride provided: "+t)}}this.persistentConnection_=new Pn(this.repoInfo_,this.onDataUpdate_.bind(this),this.onConnectStatus_.bind(this),this.onServerInfoUpdate_.bind(this),i,o),this.server_=this.persistentConnection_}i.addTokenChangeListener(function(t){r.server_.refreshAuthToken(t)}),this.statsReporter_=an.getOrCreateReporter(t,function(){return new cn(r.stats_,r.server_)}),this.transactions_init_(),this.infoData_=new rn,this.infoSyncTree_=new nn({startListening:function(t,e,n,i){var o=[],s=r.infoData_.getNode(t.path);return s.isEmpty()||(o=r.infoSyncTree_.applyServerOverwrite(t.path,s),setTimeout(function(){i("ok")},0)),o},stopListening:function(){}}),this.updateInfo_("connected",!1),this.serverSyncTree_=new nn({startListening:function(t,e,n,i){return r.server_.listen(t,n,e,function(e,n){var o=i(e,n);r.eventQueue_.raiseEventsForChangedPath(t.path,o)}),[]},stopListening:function(t,e){r.server_.unlisten(t,e)}})}return t.prototype.toString=function(){return(this.repoInfo_.secure?"https://":"http://")+this.repoInfo_.host},t.prototype.name=function(){return this.repoInfo_.namespace},t.prototype.serverTime=function(){var t=this.infoData_.getNode(new mt(".info/serverTimeOffset")).val()||0;return new Date().getTime()+t},t.prototype.generateServerValues=function(){return(t=(t={timestamp:this.serverTime()})||{}).timestamp=t.timestamp||new Date().getTime(),t;var t},t.prototype.onDataUpdate_=function(t,e,n,r){this.dataUpdateCount++;var i=new mt(t);e=this.interceptServerDataCallback_?this.interceptServerDataCallback_(t,e):e;var o=[];if(r){if(n){var s=R(e,function(t){return ve(t)});o=this.serverSyncTree_.applyTaggedQueryMerge(i,s,r)}else{var a=ve(e);o=this.serverSyncTree_.applyTaggedQueryOverwrite(i,a,r)}}else if(n){var h=R(e,function(t){return ve(t)});o=this.serverSyncTree_.applyServerMerge(i,h)}else{var u=ve(e);o=this.serverSyncTree_.applyServerOverwrite(i,u)}var l=i;0=this.index_.compare(this.getStartPost(),t)&&0>=this.index_.compare(t,this.getEndPost())},t.prototype.updateChild=function(t,e,n,r,i,o){return this.matches(new Bt(e,n))||(n=fe.EMPTY_NODE),this.indexedFilter_.updateChild(t,e,n,r,i,o)},t.prototype.updateFullNode=function(t,e,n){e.isLeafNode()&&(e=fe.EMPTY_NODE);var r=e.withIndex(this.index_);r=r.updatePriority(fe.EMPTY_NODE);var i=this;return e.forEachChild(ne,function(t,e){i.matches(new Bt(t,e))||(r=r.updateImmediateChild(t,fe.EMPTY_NODE))}),this.indexedFilter_.updateFullNode(t,r,n)},t.prototype.updatePriority=function(t,e){return t},t.prototype.filtersNodes=function(){return!0},t.prototype.getIndexedFilter=function(){return this.indexedFilter_},t.prototype.getIndex=function(){return this.index_},t.getStartPost_=function(t){if(t.hasStart()){var e=t.getIndexStartName();return t.getIndex().makePost(t.getIndexStartValue(),e)}return t.getIndex().minPost()},t.getEndPost_=function(t){if(t.hasEnd()){var e=t.getIndexEndName();return t.getIndex().makePost(t.getIndexEndValue(),e)}return t.getIndex().maxPost()},t}(),xn=function(){function t(t){this.rangedFilter_=new kn(t),this.index_=t.getIndex(),this.limit_=t.getLimit(),this.reverse_=!t.isViewFromLeft()}return t.prototype.updateChild=function(t,e,n,r,i,o){return this.rangedFilter_.matches(new Bt(e,n))||(n=fe.EMPTY_NODE),t.getImmediateChild(e).equals(n)?t:t.numChildren()=this.index_.compare(this.rangedFilter_.getStartPost(),s):0>=this.index_.compare(s,this.rangedFilter_.getEndPost())))break;r=r.updateImmediateChild(s.name,s.node),o++}}else{r=(r=e.withIndex(this.index_)).updatePriority(fe.EMPTY_NODE);var a=void 0,h=void 0,u=void 0;i=void 0;if(this.reverse_){i=r.getReverseIterator(this.index_),a=this.rangedFilter_.getEndPost(),h=this.rangedFilter_.getStartPost();var l=this.index_.getCompare();u=function(t,e){return l(e,t)}}else i=r.getIterator(this.index_),a=this.rangedFilter_.getStartPost(),h=this.rangedFilter_.getEndPost(),u=this.index_.getCompare();o=0;for(var c=!1;i.hasNext();){s=i.getNext();!c&&0>=u(a,s)&&(c=!0),c&&o=u(s,h)?o++:r=r.updateImmediateChild(s.name,fe.EMPTY_NODE)}}return this.rangedFilter_.getIndexedFilter().updateFullNode(t,r,n)},t.prototype.updatePriority=function(t,e){return t},t.prototype.filtersNodes=function(){return!0},t.prototype.getIndexedFilter=function(){return this.rangedFilter_.getIndexedFilter()},t.prototype.getIndex=function(){return this.index_},t.prototype.fullLimitUpdateChild_=function(t,e,n,r,i){var o;if(this.reverse_){var a=this.index_.getCompare();o=function(t,e){return a(e,t)}}else o=this.index_.getCompare();var h=t;s(h.numChildren()==this.limit_,"");var u=new Bt(e,n),l=this.reverse_?h.getFirstChild(this.index_):h.getLastChild(this.index_),c=this.rangedFilter_.matches(u);if(h.hasChild(e)){for(var p=h.getImmediateChild(e),d=r.getChildAfterChild(this.index_,l,this.reverse_);null!=d&&(d.name==e||h.hasChild(d.name));)d=r.getChildAfterChild(this.index_,d,this.reverse_);var f=null==d?1:o(d,u);if(c&&!n.isEmpty()&&0<=f)return null!=i&&i.trackChildChange(He.childChangedChange(e,n,p)),h.updateImmediateChild(e,n);null!=i&&i.trackChildChange(He.childRemovedChange(e,p));var _=h.updateImmediateChild(e,fe.EMPTY_NODE);return null!=d&&this.rangedFilter_.matches(d)?(null!=i&&i.trackChildChange(He.childAddedChange(d.name,d.node)),_.updateImmediateChild(d.name,d.node)):_}return n.isEmpty()?t:c&&0<=o(l,u)?(null!=i&&(i.trackChildChange(He.childRemovedChange(l.name,l.node)),i.trackChildChange(He.childAddedChange(e,n))),h.updateImmediateChild(e,n).updateImmediateChild(l.name,fe.EMPTY_NODE)):t},t}(),Fn=function(){function t(){this.limitSet_=!1,this.startSet_=!1,this.startNameSet_=!1,this.endSet_=!1,this.endNameSet_=!1,this.limit_=0,this.viewFrom_="",this.indexStartValue_=null,this.indexStartName_="",this.indexEndValue_=null,this.indexEndName_="",this.index_=ne}return t.prototype.hasStart=function(){return this.startSet_},t.prototype.isViewFromLeft=function(){return""===this.viewFrom_?this.startSet_:this.viewFrom_===t.WIRE_PROTOCOL_CONSTANTS_.VIEW_FROM_LEFT},t.prototype.getIndexStartValue=function(){return s(this.startSet_,"Only valid if start has been set"),this.indexStartValue_},t.prototype.getIndexStartName=function(){return s(this.startSet_,"Only valid if start has been set"),this.startNameSet_?this.indexStartName_:ot},t.prototype.hasEnd=function(){return this.endSet_},t.prototype.getIndexEndValue=function(){return s(this.endSet_,"Only valid if end has been set"),this.indexEndValue_},t.prototype.getIndexEndName=function(){return s(this.endSet_,"Only valid if end has been set"),this.endNameSet_?this.indexEndName_:st},t.prototype.hasLimit=function(){return this.limitSet_},t.prototype.hasAnchoredLimit=function(){return this.limitSet_&&""!==this.viewFrom_},t.prototype.getLimit=function(){return s(this.limitSet_,"Only valid if limit has been set"),this.limit_},t.prototype.getIndex=function(){return this.index_},t.prototype.copy_=function(){var e=new t;return e.limitSet_=this.limitSet_,e.limit_=this.limit_,e.startSet_=this.startSet_,e.indexStartValue_=this.indexStartValue_,e.startNameSet_=this.startNameSet_,e.indexStartName_=this.indexStartName_,e.endSet_=this.endSet_,e.indexEndValue_=this.indexEndValue_,e.endNameSet_=this.endNameSet_,e.indexEndName_=this.indexEndName_,e.index_=this.index_,e.viewFrom_=this.viewFrom_,e},t.prototype.limit=function(t){var e=this.copy_();return e.limitSet_=!0,e.limit_=t,e.viewFrom_="",e},t.prototype.limitToFirst=function(e){var n=this.copy_();return n.limitSet_=!0,n.limit_=e,n.viewFrom_=t.WIRE_PROTOCOL_CONSTANTS_.VIEW_FROM_LEFT,n},t.prototype.limitToLast=function(e){var n=this.copy_();return n.limitSet_=!0,n.limit_=e,n.viewFrom_=t.WIRE_PROTOCOL_CONSTANTS_.VIEW_FROM_RIGHT,n},t.prototype.startAt=function(t,e){var n=this.copy_();return n.startSet_=!0,void 0===t&&(t=null),n.indexStartValue_=t,null!=e?(n.startNameSet_=!0,n.indexStartName_=e):(n.startNameSet_=!1,n.indexStartName_=""),n},t.prototype.endAt=function(t,e){var n=this.copy_();return n.endSet_=!0,void 0===t&&(t=null),n.indexEndValue_=t,void 0!==e?(n.endNameSet_=!0,n.indexEndName_=e):(n.endNameSet_=!1,n.indexEndName_=""),n},t.prototype.orderBy=function(t){var e=this.copy_();return e.index_=t,e},t.prototype.getQueryObject=function(){var e=t.WIRE_PROTOCOL_CONSTANTS_,n={};if(this.startSet_&&(n[e.INDEX_START_VALUE]=this.indexStartValue_,this.startNameSet_&&(n[e.INDEX_START_NAME]=this.indexStartName_)),this.endSet_&&(n[e.INDEX_END_VALUE]=this.indexEndValue_,this.endNameSet_&&(n[e.INDEX_END_NAME]=this.indexEndName_)),this.limitSet_){n[e.LIMIT]=this.limit_;var r=this.viewFrom_;""===r&&(r=this.isViewFromLeft()?e.VIEW_FROM_LEFT:e.VIEW_FROM_RIGHT),n[e.VIEW_FROM]=r}return this.index_!==ne&&(n[e.INDEX]=this.index_.toString()),n},t.prototype.loadsAllData=function(){return!(this.startSet_||this.endSet_||this.limitSet_)},t.prototype.isDefault=function(){return this.loadsAllData()&&this.index_==ne},t.prototype.getNodeFilter=function(){return this.loadsAllData()?new Be(this.getIndex()):this.hasLimit()?new xn(this):new kn(this)},t.prototype.toRestQueryStringParameters=function(){var e,n=t.REST_QUERY_CONSTANTS_,r={};return this.isDefault()?r:(this.index_===ne?e=n.PRIORITY_INDEX:this.index_===Ce?e=n.VALUE_INDEX:this.index_===Yt?e=n.KEY_INDEX:(s(this.index_ instanceof Ee,"Unrecognized index type!"),e=this.index_.toString()),r[n.ORDER_BY]=C(e),this.startSet_&&(r[n.START_AT]=C(this.indexStartValue_),this.startNameSet_&&(r[n.START_AT]+=","+C(this.indexStartName_))),this.endSet_&&(r[n.END_AT]=C(this.indexEndValue_),this.endNameSet_&&(r[n.END_AT]+=","+C(this.indexEndName_))),this.limitSet_&&(this.isViewFromLeft()?r[n.LIMIT_TO_FIRST]=this.limit_:r[n.LIMIT_TO_LAST]=this.limit_),r)},t.WIRE_PROTOCOL_CONSTANTS_={INDEX_START_VALUE:"sp",INDEX_START_NAME:"sn",INDEX_END_VALUE:"ep",INDEX_END_NAME:"en",LIMIT:"l",VIEW_FROM:"vf",VIEW_FROM_LEFT:"l",VIEW_FROM_RIGHT:"r",INDEX:"i"},t.REST_QUERY_CONSTANTS_={ORDER_BY:"orderBy",PRIORITY_INDEX:"$priority",VALUE_INDEX:"$value",KEY_INDEX:"$key",START_AT:"startAt",END_AT:"endAt",LIMIT_TO_FIRST:"limitToFirst",LIMIT_TO_LAST:"limitToLast"},t.DEFAULT=new t,t}(),An=function(t){function e(e,n){if(!(e instanceof On))throw new Error("new Reference() no longer supported - use app.database().");return t.call(this,e,n,Fn.DEFAULT,!1)||this}return r(e,t),e.prototype.getKey=function(){return k("Reference.key",0,0,arguments.length),this.path.isEmpty()?null:this.path.getBack()},e.prototype.child=function(t){return k("Reference.child",1,1,arguments.length),"number"==typeof t?t=t+"":t instanceof mt||(null===this.path.getFront()?function(t,e,n,r){n&&(n=n.replace(/^\/*\.info(\/|$)/,"/")),Wt(t,e,n,r)}("Reference.child",1,t,!1):Wt("Reference.child",1,t,!1)),new e(this.repo,this.path.child(t))},e.prototype.getParent=function(){k("Reference.parent",0,0,arguments.length);var t=this.path.parent();return null===t?null:new e(this.repo,t)},e.prototype.getRoot=function(){k("Reference.root",0,0,arguments.length);for(var t=this;null!==t.getParent();)t=t.getParent();return t},e.prototype.databaseProp=function(){return this.repo.database},e.prototype.set=function(t,e){k("Reference.set",1,2,arguments.length),qt("Reference.set",this.path),kt("Reference.set",1,t,this.path,!1),F("Reference.set",2,e,!0);var n=new p;return this.repo.setWithPriority(this.path,t,null,n.wrapCallback(e)),n.promise},e.prototype.update=function(t,e){if(k("Reference.update",1,2,arguments.length),qt("Reference.update",this.path),Array.isArray(t)){for(var n={},r=0;r=On.MAX_TRANSACTION_RETRIES_)l=!0,c="maxretry",i=i.concat(this.serverSyncTree_.ackUserWrite(h.currentWriteId,!0));else{var p=this.getLatestState_(h.path,o);h.currentInputSnapshot=p;var d=t[a].update(p.val());if(void 0!==d){xt("transaction failed: Data returned ",d,h.path);var f=ve(d);"object"==typeof d&&null!=d&&w(d,".priority")||(f=f.updatePriority(p.getPriority()));var _=h.currentWriteId,y=this.generateServerValues(),v=Oe(f,y);h.currentOutputSnapshotRaw=f,h.currentOutputSnapshotResolved=v,h.currentWriteId=this.getNextWriteId_(),o.splice(o.indexOf(_),1),i=(i=i.concat(this.serverSyncTree_.applyUserOverwrite(h.path,v,h.currentWriteId,h.applyLocally))).concat(this.serverSyncTree_.ackUserWrite(_,!0))}else l=!0,c="nodata",i=i.concat(this.serverSyncTree_.ackUserWrite(h.currentWriteId,!0))}if(this.eventQueue_.raiseEventsForChangedPath(e,i),i=[],l&&(t[a].status=Ln.COMPLETED,n=t[a].unwatcher,setTimeout(n,Math.floor(0)),t[a].onComplete))if("nodata"===c){var g=new An(this,t[a].path),m=t[a].currentInputSnapshot,C=new we(m,g,ne);r.push(t[a].onComplete.bind(null,null,!1,C))}else r.push(t[a].onComplete.bind(null,new Error(c),!1,null))}this.pruneCompletedTransactionsBelowNode_(this.transactionQueueTree_);for(a=0;a