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path: root/app/models/project_services/teamcity_service.rb
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# frozen_string_literal: true

class TeamcityService < CiService
  include ReactiveService
  include ServicePushDataValidations

  prop_accessor :teamcity_url, :build_type, :username, :password

  validates :teamcity_url, presence: true, public_url: true, if: :activated?
  validates :build_type, presence: true, if: :activated?
  validates :username,
    presence: true,
    if: ->(service) { service.activated? && service.password }
  validates :password,
    presence: true,
    if: ->(service) { service.activated? && service.username }

  attr_accessor :response

  after_save :compose_service_hook, if: :activated?
  before_update :reset_password

  class << self
    def to_param
      'teamcity'
    end

    def supported_events
      %w(push merge_request)
    end

    def event_description(event)
      case event
      when 'push', 'push_events'
        'TeamCity CI will be triggered after every push to the repository except branch delete'
      when 'merge_request', 'merge_request_events'
        'TeamCity CI will be triggered after a merge request has been created or updated'
      end
    end
  end

  def compose_service_hook
    hook = service_hook || build_service_hook
    hook.save
  end

  def reset_password
    if teamcity_url_changed? && !password_touched?
      self.password = nil
    end
  end

  def title
    'JetBrains TeamCity'
  end

  def description
    s_('ProjectService|Run CI/CD pipelines with JetBrains TeamCity.')
  end

  def help
    s_('To run CI/CD pipelines with JetBrains TeamCity, input the GitLab project details in the TeamCity project Version Control Settings.')
  end

  def fields
    [
      {
        type: 'text',
        name: 'teamcity_url',
        title: s_('ProjectService|TeamCity server URL'),
        placeholder: 'https://teamcity.example.com',
        required: true
      },
      {
        type: 'text',
        name: 'build_type',
        help: s_('ProjectService|The build configuration ID of the TeamCity project.'),
        required: true
      },
      {
        type: 'text',
        name: 'username',
        help: s_('ProjectService|Must have permission to trigger a manual build in TeamCity.')
      },
      {
        type: 'password',
        name: 'password',
        non_empty_password_title: s_('ProjectService|Enter new password'),
        non_empty_password_help: s_('ProjectService|Leave blank to use your current password')
      }
    ]
  end

  def build_page(sha, ref)
    with_reactive_cache(sha, ref) {|cached| cached[:build_page] }
  end

  def commit_status(sha, ref)
    with_reactive_cache(sha, ref) {|cached| cached[:commit_status] }
  end

  def calculate_reactive_cache(sha, ref)
    response = get_path("httpAuth/app/rest/builds/branch:unspecified:any,revision:#{sha}")

    if response
      { build_page: read_build_page(response), commit_status: read_commit_status(response) }
    else
      { build_page: teamcity_url, commit_status: :error }
    end
  end

  def execute(data)
    case data[:object_kind]
    when 'push'
      execute_push(data)
    when 'merge_request'
      execute_merge_request(data)
    end
  end

  private

  def execute_push(data)
    branch = Gitlab::Git.ref_name(data[:ref])
    post_to_build_queue(data, branch) if push_valid?(data)
  end

  def execute_merge_request(data)
    branch = data[:object_attributes][:source_branch]
    post_to_build_queue(data, branch) if merge_request_valid?(data)
  end

  def read_build_page(response)
    if response.code != 200
      # If actual build link can't be determined,
      # send user to build summary page.
      build_url("viewLog.html?buildTypeId=#{build_type}")
    else
      # If actual build link is available, go to build result page.
      built_id = response['build']['id']
      build_url("viewLog.html?buildId=#{built_id}&buildTypeId=#{build_type}")
    end
  end

  def read_commit_status(response)
    return :error unless response.code == 200 || response.code == 404

    status = if response.code == 404
               'Pending'
             else
               response['build']['status']
             end

    return :error unless status.present?

    if status.include?('SUCCESS')
      'success'
    elsif status.include?('FAILURE')
      'failed'
    elsif status.include?('Pending')
      'pending'
    else
      :error
    end
  end

  def build_url(path)
    Gitlab::Utils.append_path(teamcity_url, path)
  end

  def get_path(path)
    Gitlab::HTTP.try_get(build_url(path), verify: false, basic_auth: basic_auth, extra_log_info: { project_id: project_id })
  end

  def post_to_build_queue(data, branch)
    Gitlab::HTTP.post(
      build_url('httpAuth/app/rest/buildQueue'),
      body: "<build branchName=#{branch.encode(xml: :attr)}>"\
            "<buildType id=#{build_type.encode(xml: :attr)}/>"\
            '</build>',
      headers: { 'Content-type' => 'application/xml' },
      basic_auth: basic_auth
    )
  end

  def basic_auth
    { username: username, password: password }
  end
end