iOS backend app to manage a Firebase realtime Database

Developer should hand in a bug free application iOS app should be in objective -C backend system for a Live score app - firebase realtime database - backend iOS app to change and update the scores and events firebase will have the following structure or anything you see preferable Match -m_id (key) - Team_a_score (int) - Team_b score (int) - Quarter (int) - time - event_type (int) 0 or 1 or 2 - event - eventID (int) Match are populated from a json file, if m_id is not present in firebase, insert new key, Backend iOS app will update the value of each key. iOS APP views Login, with username and password, if logged in is a success, present a Tableview which list all live match (from json file) touch on each row to enter the match update screen, where the user will be able to update the scores, quarters, time and events of the firebase realtime database different events: Event_type = 0 events: - Start of Q1 - End of Q1 - Start of Q2 - End of Q2 - Start of Q3 - End of Q3 - Start of Q4 - End of Game, if at end of Q4 (score is equal), Overtime, Start of OT1, end of OT1 Event_type =1 or 2 (1 represent event for team A, and 2 represents event for team B) Possession 2Pts Scored 2Pts Missed 3Pts Scored 3Pts Missed Personal Foul Personal Foul, 1Free Throw Personal Foul, 2Free Throw Personal Foul, 3Free Throw Technical Foul, 1Free Throw 1 Free Throw 1 of 1 Free Throw Scored 1 of 1 Free Throw Missed 2 Free Throws 1 of 2 Free Throw Scored 1 of 2 Free Throw Missed 2 of 2 Free Throw Scored 2 of 2 Free Throw Missed 3 Free Throws 1 of 3 Free Throw Scored 1 of 3 Free Throw Missed 2 of 3 Free Throw Scored 2 of 3 Free Throw Missed 3 of 3 Free Throw Scored 3 of 3 Free Throw Missed