# frozen_string_literal: true

module ReleaseTools
  class MergeRequest < Issuable
    def milestone
      self[:milestone] || nil
    end

    def source_branch
      self[:source_branch] || raise(ArgumentError, 'Please set a `source_branch`!')
    end

    def target_branch
      self[:target_branch] || project.default_branch
    end

    def create
      GitlabClient.create_merge_request(self, project_path)
    end

    def accept
      GitlabClient.accept_merge_request(self, project_path)
    end

    def approve
      GitlabClient.approve_merge_request(self, project_path)
    end

    def to_reference
      "#{project_path}!#{iid}"
    end

    def conflicts
      self[:conflicts] || nil
    end

    def conflicts?
      conflicts&.any?
    end

    def detailed_merge_status
      remote_issuable&.detailed_merge_status
    end

    def merge_when_pipeline_succeeds?
      !!remote_issuable&.merge_when_pipeline_succeeds
    end

    def remote_issuable
      @remote_issuable ||= GitlabClient
        .merge_requests(project_path, state: 'opened', source_branch: source_branch)
        .first
    end

    def project_path
      project.path
    end

    # Merge request details returned by the MR API contain a web_url
    # attribute, so we often call `web_url` when we want the URL of the
    # merge request.
    def web_url
      self[:web_url] || url
    end
  end
end