139 lines
4 KiB
Ruby
139 lines
4 KiB
Ruby
module MergeRequests
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class BuildService < MergeRequests::BaseService
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def execute
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self.merge_request = MergeRequest.new(params)
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merge_request.compare_commits = []
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merge_request.source_project = find_source_project
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merge_request.target_project = find_target_project
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merge_request.target_branch = find_target_branch
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merge_request.can_be_created = branches_valid?
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compare_branches if branches_present?
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assign_title_and_description if merge_request.can_be_created
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merge_request
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end
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private
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attr_accessor :merge_request
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delegate :target_branch, :source_branch, :source_project, :target_project, :compare_commits, :wip_title, :description, :errors, to: :merge_request
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def find_source_project
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source_project || project
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end
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def find_target_project
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return target_project if target_project.present? && can?(current_user, :read_project, target_project)
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project.forked_from_project || project
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end
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def find_target_branch
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target_branch || target_project.default_branch
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end
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def source_branch_specified?
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params[:source_branch].present?
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end
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def target_branch_specified?
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params[:target_branch].present?
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end
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def branches_valid?
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return false unless source_branch_specified? || target_branch_specified?
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validate_branches
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errors.blank?
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end
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def compare_branches
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compare = CompareService.new(
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source_project,
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source_branch
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).execute(
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target_project,
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target_branch
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)
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if compare
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merge_request.compare_commits = compare.commits
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merge_request.compare = compare
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end
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end
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def validate_branches
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add_error('You must select source and target branch') unless branches_present?
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add_error('You must select different branches') if same_source_and_target?
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add_error("Source branch \"#{source_branch}\" does not exist") unless source_branch_exists?
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add_error("Target branch \"#{target_branch}\" does not exist") unless target_branch_exists?
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end
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def add_error(message)
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errors.add(:base, message)
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end
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def branches_present?
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target_branch.present? && source_branch.present?
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end
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def same_source_and_target?
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source_project == target_project && target_branch == source_branch
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end
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def source_branch_exists?
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source_branch.blank? || source_project.commit(source_branch)
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end
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def target_branch_exists?
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target_branch.blank? || target_project.commit(target_branch)
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end
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# When your branch name starts with an iid followed by a dash this pattern will be
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# interpreted as the user wants to close that issue on this project.
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#
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# For example:
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# - Issue 112 exists, title: Emoji don't show up in commit title
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# - Source branch is: 112-fix-mep-mep
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#
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# Will lead to:
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# - Appending `Closes #112` to the description
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# - Setting the title as 'Resolves "Emoji don't show up in commit title"' if there is
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# more than one commit in the MR
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#
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def assign_title_and_description
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if match = source_branch.match(/\A(\d+)-/)
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iid = match[1]
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end
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commits = compare_commits
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if commits && commits.count == 1
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commit = commits.first
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merge_request.title = commit.title
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merge_request.description ||= commit.description.try(:strip)
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elsif iid && issue = target_project.get_issue(iid, current_user)
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case issue
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when Issue
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merge_request.title = "Resolve \"#{issue.title}\""
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when ExternalIssue
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merge_request.title = "Resolve #{issue.title}"
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end
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else
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merge_request.title = source_branch.titleize.humanize
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end
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if iid
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closes_issue = "Closes ##{iid}"
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if description.present?
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merge_request.description += closes_issue.prepend("\n\n")
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else
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merge_request.description = closes_issue
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end
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end
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merge_request.title = wip_title if commits.empty?
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end
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end
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end
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