This allows us to get the following data from the Commons file name :

• Depicts statements (list of Wikidata IDs only, labels are found after in T222495)
• Captions in all entered languages

Parameters for call to https://commons.wikimedia.org/w/api.php

example: https://commons.wikimedia.org/w/api.php?action=wbgetentities&titles=File:DIWALI_A_FESTIVAL_OF_LIGHTS.jpg&sites=commonswiki

result = response.entities[mediaIdentifer]  //only property in response.query.pages

depictsStatements = result.statements.P180  //array of 'depicts' statements

Each element in the array is an object representing a single depicts statement. The Wikidata item for each statement is found with:

depictsStatement.datavalue.value.id