User:Abel/experimental.js

console.log('+');

var controller_item_id = 96;

var wbEStruct = [
				'claims.P3', // location of P3 relations in wbEntity
				'mainsnak.datavalue.value', // location of ID properties in related entity
				'numeric-id' // ID property name which checked 
				]; 

// check if we are on a page of a loaded Entity
if ( typeof mw.config.values.wbEntity !=  "undefined" ) {
	
	// get wbEntity as json
	var obj = JSON.parse ( mw.config.values.wbEntity );
	
	// check if we have P3 relations and iterate through
	if ( typeof obj.claims.P3 != "undefined" ) {
		for( var i = 0; i < dive(obj, wbEStruct[0]).length; i++ ) {
		
			// check if we have controller id constructed from wbEntity 
			if( dive(dive(obj, wbEStruct[0])[i] , wbEStruct[1])[wbEStruct[2]] === controller_item_id ) {
		
				var $title2 = $( '.wikibase-title' ),
				qId2 = $title2.find( '.wikibase-title-id' ).text().replace( /[()]/g, '' )

				var api = new mw.Api();
				api.get( {
				    action: 'expandtemplates',
				    text: '{{Mailto|'+qId2+'}}'
				} ).done( function ( data2 ) {
				    mw.notify( $('<span>Abel\'s <a href="https://wiki.personaldata.io/wiki/User:Abel/experimental.js">experimental script</a>, called from <a href="https://wiki.personaldata.io/wiki/MediaWiki:common.js">sitewide common.js</a>.</span> <a href="'+data2.expandtemplates["*"]+'"> Do a SAR to this controller!</a>') , { autoHide: false } );
				} );
		
			}
		}
	}
	// Else let's do nothing;
}
console.log("-");
console.log(dive(obj, wbEStruct[1]));
console.log(dive(obj, wbEStruct[2]));
console.log("~");

// helper function for diving into a part of array
function indexinterpolate(obj,i) {return obj[i]}; 

// dive selects mymatrix.a.b.c.d from mymatrix array and 'a.b.c.d' as string
function dive(array, read){
	return read.split('.').reduce(indexinterpolate, array);
}