LINK_CLICK logs an "opened" event

Reducer changes:
* Make the eventLogging reducer queue an "opened" event with the
  requisite supporting data.

Changes:
* Update the Popups EventLogging schema to the latest revision, which
  defines the "opened" action.

Bug: T152225
Change-Id: I9d67daf83815f1c08b6479497c566dfa337de4bc

extension.json

@@ -37,7 +37,7 @@
 		]
 	},
 	"EventLoggingSchemas": {
-		"Popups": 15906495
+		"Popups": 16112163
 	},
 	"config": {
 		"@PopupsBetaFeature": "@var bool: Whether the extension should be enabled as an opt-in beta feature. If true, the BetaFeatures extension must be installed. False by default.",

resources/ext.popups/reducers.js

@@ -199,6 +199,15 @@
 					}
 				} );
 
+			case mw.popups.actionTypes.LINK_CLICK:
+				return nextState( state, {
+					event: {
+						action: 'opened',
+						linkInteractionToken: state.interaction.token,
+						totalInteractionTime: Math.round( action.timestamp - state.interaction.started )
+					}
+				} );
+
 			default:
 				return state;
 		}

tests/qunit/ext.popups/reducers.eventLogging.test.js

@@ -135,4 +135,34 @@
 		);
 	} );
 
+	QUnit.test( 'LINK_CLICK should enqueue an "opened" event', function ( assert ) {
+		var state,
+			now = mw.now();
+
+		state = {
+			interaction: undefined
+		};
+
+		state = mw.popups.reducers.eventLogging( state, {
+			type: 'LINK_DWELL',
+			interactionToken: '0987654321',
+			timestamp: now
+		} );
+
+		state = mw.popups.reducers.eventLogging( state, {
+			type: 'LINK_CLICK',
+			timestamp: now + 250.25
+		} );
+
+		assert.deepEqual(
+			state.event,
+			{
+				action: 'opened',
+				linkInteractionToken: '0987654321',
+				totalInteractionTime: 250
+			},
+			'The event is enqueued and the totalInteractionProperty is an integer.'
+		);
+	} );
+
 }( mediaWiki ) );