242 lines
7.1 KiB
Ruby
242 lines
7.1 KiB
Ruby
# frozen_string_literal: true
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module MergeRequests
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class BuildService < MergeRequests::BaseService
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include Gitlab::Utils::StrongMemoize
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def execute
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@params_issue_iid = params.delete(:issue_iid)
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self.merge_request = MergeRequest.new
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# TODO: this should handle all quick actions that don't have side effects
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# https://gitlab.com/gitlab-org/gitlab-ce/issues/53658
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merge_quick_actions_into_params!(merge_request, only: [:target_branch])
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# Assign the projects first so we can use policies for `filter_params`
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merge_request.author = current_user
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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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self.params = assign_allowed_merge_params(merge_request, params)
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filter_params(merge_request)
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merge_request.assign_attributes(params.to_h.compact)
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merge_request.compare_commits = []
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merge_request.target_branch = find_target_branch
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merge_request.can_be_created = projects_and_branches_valid?
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# compare branches only if branches are valid, otherwise
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# compare_branches may raise an error
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if merge_request.can_be_created
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compare_branches
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assign_title_and_description
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assign_labels
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assign_milestone
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end
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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,
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:target_branch_ref,
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:target_project,
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:source_branch,
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:source_branch_ref,
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:source_project,
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:compare_commits,
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:wip_title,
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:description,
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:errors,
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to: :merge_request
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def find_source_project
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source_project = project_from_params(:source_project)
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return source_project if source_project.present? && can?(current_user, :create_merge_request_from, source_project)
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project
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end
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def find_target_project
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target_project = project_from_params(:target_project)
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return target_project if target_project.present? && can?(current_user, :create_merge_request_in, target_project)
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target_project = project.default_merge_request_target
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return target_project if target_project.present? && can?(current_user, :create_merge_request_in, target_project)
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project
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end
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def project_from_params(param_name)
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project_from_params = params.delete(param_name)
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id_param_name = :"#{param_name}_id"
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if project_from_params.nil? && params[id_param_name]
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project_from_params = Project.find_by_id(params.delete(id_param_name))
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end
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project_from_params
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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 projects_and_branches_valid?
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return false if source_project.nil? || target_project.nil?
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return false unless source_branch_specified? || target_branch_specified?
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validate_projects_and_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_ref
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).execute(
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target_project,
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target_branch_ref
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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_projects_and_branches
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merge_request.validate_target_project
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merge_request.validate_fork
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return if errors.any?
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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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assign_title_and_description_from_single_commit
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merge_request.title ||= title_from_issue if target_project.issues_enabled? || target_project.external_issue_tracker
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merge_request.title ||= source_branch.titleize.humanize
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merge_request.title = wip_title if compare_commits.empty?
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append_closes_description
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end
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def assign_labels
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return unless target_project.issues_enabled? && issue
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return if merge_request.label_ids&.any?
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merge_request.label_ids = issue.try(:label_ids)
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end
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def assign_milestone
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return unless target_project.issues_enabled? && issue
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return if merge_request.milestone_id.present?
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merge_request.milestone_id = issue.try(:milestone_id)
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end
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def append_closes_description
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return unless issue&.to_reference.present?
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closes_issue = "Closes #{issue.to_reference}"
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if description.present?
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descr_parts = [merge_request.description, closes_issue]
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merge_request.description = descr_parts.join("\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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def assign_title_and_description_from_single_commit
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commits = compare_commits
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return unless 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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end
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def title_from_issue
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return unless issue
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return "Resolve \"#{issue.title}\"" if issue.is_a?(Issue)
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return if issue_iid.blank?
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title_parts = ["Resolve #{issue.to_reference}"]
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branch_title = source_branch.downcase.remove(issue_iid.downcase).titleize.humanize
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title_parts << "\"#{branch_title}\"" if branch_title.present?
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title_parts.join(' ')
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end
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def issue_iid
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strong_memoize(:issue_iid) do
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@params_issue_iid || begin
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id = if target_project.external_issue_tracker
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source_branch.match(target_project.external_issue_reference_pattern).try(:[], 0)
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end
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id || source_branch.match(/\A(\d+)-/).try(:[], 1)
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end
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end
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end
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def issue
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strong_memoize(:issue) do
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target_project.get_issue(issue_iid, current_user)
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end
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end
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end
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end
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