Table of Contents

Specification

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1. 1. Verify the validity of access token
      1. in case of error return 401 ('Access denied')
   2. Check user scope merge_candidate:assign in order to perform this action
      1. in case of error generate 401 response ('Invalid scopes')

Verify role

Extract from token:

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1. Priority by records which already has some decisions 
   1. join table  manual_merge_requests on manual_merge_requests.merge_candidate_id=manual_merge_candidates.merge_candidate_id and manual_merge_requests.assignee_id<>$user_id
   2. choose manual_merge_requests.merge_candidate_id  order by  count() DESC
2. manual_merge_candidate must satisfy constraint: merge_candidate_id+assignee_id in table manual_merge_requests

Validate request

1. Check whether this user doesn't have other merge_requests in status='NEW'
   1. check manual_merge_requests by assignee_id=$user_id and status='NEW'
      1. in case of error return conflict error 'CONFLICT' - 'Assignee is not allowed to ask for new merge request'
2. Check amount of postponed merge_requests for current employee_id
   1. check qty from manual_merge_requests by assignee_id=$user_id and status='POSTPONED'
      1. in case of qty<postponed_requests_limit return conflict error 'CONFLICT' - 'Assignee reached limit in postponed merge_requests'
3. Check there is no record for merge_candidate_id+assignee_id  and whether merge_candidate_id can be reviewed
   1. verify merge_candidate_id has status NEW and assignee_id is null in table manual_merge_candidates. in table manual_merge_requests shouldn't be a record with condition merge_candidate_id+$user_id
      
      1. in case there is no merge candidate in status NEW which wasn't verified by $user_id return 204 No content

Update assignee for merge_candidate

1. Update assignee_id in manual_merge_candidates  to $user_id
2. Update updated_at = now()
3. Update updated_at = $user_id

manual_merge_candidates

Make merge_request for assignee

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