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# frozen_string_literal: true
module MergeRequests
class BuildService < MergeRequests::BaseService
include Gitlab::Utils::StrongMemoize
def execute
@params_issue_iid = params.delete(:issue_iid)
self.merge_request = MergeRequest.new
# TODO: this should handle all quick actions that don't have side effects
# https://gitlab.com/gitlab-org/gitlab-ce/issues/53658
merge_quick_actions_into_params!(merge_request, only: [:target_branch])
merge_request.merge_params['force_remove_source_branch'] = params.delete(:force_remove_source_branch) if params.has_key?(:force_remove_source_branch)
merge_request.assign_attributes(params)
merge_request.author = current_user
merge_request.compare_commits = []
merge_request.source_project = find_source_project
merge_request.target_project = find_target_project
merge_request.target_branch = find_target_branch
merge_request.can_be_created = projects_and_branches_valid?
ensure_milestone_available(merge_request)
# compare branches only if branches are valid, otherwise
# compare_branches may raise an error
if merge_request.can_be_created
compare_branches
assign_title_and_description
assign_labels
assign_milestone
end
merge_request
end
private
attr_accessor :merge_request
delegate :target_branch,
:target_branch_ref,
:target_project,
:source_branch,
:source_branch_ref,
:source_project,
:compare_commits,
:wip_title,
:description,
:errors,
to: :merge_request
def find_source_project
return source_project if source_project.present? && can?(current_user, :create_merge_request_from, source_project)
project
end
def find_target_project
return target_project if target_project.present? && can?(current_user, :create_merge_request_in, target_project)
target_project = project.default_merge_request_target
return target_project if target_project.present? && can?(current_user, :create_merge_request_in, target_project)
project
end
def find_target_branch
target_branch || target_project.default_branch
end
def source_branch_specified?
params[:source_branch].present?
end
def target_branch_specified?
params[:target_branch].present?
end
def projects_and_branches_valid?
return false if source_project.nil? || target_project.nil?
return false unless source_branch_specified? || target_branch_specified?
validate_projects_and_branches
errors.blank?
end
def compare_branches
compare = CompareService.new(
source_project,
source_branch_ref
).execute(
target_project,
target_branch_ref
)
if compare
merge_request.compare_commits = compare.commits
merge_request.compare = compare
end
end
def validate_projects_and_branches
merge_request.validate_target_project
merge_request.validate_fork
return if errors.any?
add_error('You must select source and target branch') unless branches_present?
add_error('You must select different branches') if same_source_and_target?
add_error("Source branch \"#{source_branch}\" does not exist") unless source_branch_exists?
add_error("Target branch \"#{target_branch}\" does not exist") unless target_branch_exists?
end
def add_error(message)
errors.add(:base, message)
end
def branches_present?
target_branch.present? && source_branch.present?
end
def same_source_and_target?
source_project == target_project && target_branch == source_branch
end
def source_branch_exists?
source_branch.blank? || source_project.commit(source_branch)
end
def target_branch_exists?
target_branch.blank? || target_project.commit(target_branch)
end
# When your branch name starts with an iid followed by a dash this pattern will be
# interpreted as the user wants to close that issue on this project.
#
# For example:
# - Issue 112 exists, title: Emoji don't show up in commit title
# - Source branch is: 112-fix-mep-mep
#
# Will lead to:
# - Appending `Closes #112` to the description
# - Setting the title as 'Resolves "Emoji don't show up in commit title"' if there is
# more than one commit in the MR
#
def assign_title_and_description
assign_title_and_description_from_single_commit
merge_request.title ||= title_from_issue if target_project.issues_enabled? || target_project.external_issue_tracker
merge_request.title ||= source_branch.titleize.humanize
merge_request.title = wip_title if compare_commits.empty?
append_closes_description
end
def assign_labels
return unless target_project.issues_enabled? && issue
return if merge_request.label_ids&.any?
merge_request.label_ids = issue.try(:label_ids)
end
def assign_milestone
return unless target_project.issues_enabled? && issue
return if merge_request.milestone_id.present?
merge_request.milestone_id = issue.try(:milestone_id)
end
def append_closes_description
return unless issue&.to_reference.present?
closes_issue = "Closes #{issue.to_reference}"
if description.present?
descr_parts = [merge_request.description, closes_issue]
merge_request.description = descr_parts.join("\n\n")
else
merge_request.description = closes_issue
end
end
def assign_title_and_description_from_single_commit
commits = compare_commits
return unless commits&.count == 1
commit = commits.first
merge_request.title ||= commit.title
merge_request.description ||= commit.description.try(:strip)
end
def title_from_issue
return unless issue
return "Resolve \"#{issue.title}\"" if issue.is_a?(Issue)
return if issue_iid.blank?
title_parts = ["Resolve #{issue.to_reference}"]
branch_title = source_branch.downcase.remove(issue_iid.downcase).titleize.humanize
title_parts << "\"#{branch_title}\"" if branch_title.present?
title_parts.join(' ')
end
def issue_iid
strong_memoize(:issue_iid) do
@params_issue_iid || begin
id = if target_project.external_issue_tracker
source_branch.match(target_project.external_issue_reference_pattern).try(:[], 0)
end
id || source_branch.match(/\A(\d+)-/).try(:[], 1)
end
end
end
def issue
strong_memoize(:issue) do
target_project.get_issue(issue_iid, current_user)
end
end
end
end
|
