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# frozen_string_literal: true
module MergeRequests
class SquashService < MergeRequests::WorkingCopyBaseService
def execute
# If performing a squash would result in no change, then
# immediately return a success message without performing a squash
if merge_request.commits_count < 2 && message.nil?
return success(squash_sha: merge_request.diff_head_sha)
end
if merge_request.squash_in_progress?
return error('Squash task canceled: another squash is already in progress.')
end
squash! || error('Failed to squash. Should be done manually.')
end
private
def squash!
squash_sha = repository.squash(current_user, merge_request, message || merge_request.default_squash_commit_message)
success(squash_sha: squash_sha)
rescue => e
log_error("Failed to squash merge request #{merge_request.to_reference(full: true)}:")
log_error(e.message)
false
end
def repository
target_project.repository
end
def merge_request
params[:merge_request]
end
def message
params[:squash_commit_message].presence
end
end
end