# frozen_string_literal: true

module Integrations
  class Bamboo < BaseCi
    include ReactivelyCached
    prepend EnableSslVerification

    field :bamboo_url,
      title: -> { s_('BambooService|Bamboo URL') },
      placeholder: -> { s_('https://bamboo.example.com') },
      help: -> { s_('BambooService|Bamboo service root URL.') },
      required: true

    field :build_key,
      help: -> { s_('BambooService|Bamboo build plan key.') },
      non_empty_password_title: -> { s_('BambooService|Enter new build key') },
      non_empty_password_help: -> { s_('BambooService|Leave blank to use your current build key.') },
      placeholder: -> { s_('KEY') },
      required: true

    field :username,
      help: -> { s_('BambooService|The user with API access to the Bamboo server.') }

    field :password,
      type: 'password',
      non_empty_password_title: -> { s_('ProjectService|Enter new password') },
      non_empty_password_help: -> { s_('ProjectService|Leave blank to use your current password') }

    validates :bamboo_url, presence: true, public_url: true, if: :activated?
    validates :build_key, 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

    before_validation :reset_password

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

    def title
      s_('BambooService|Atlassian Bamboo')
    end

    def description
      s_('BambooService|Run CI/CD pipelines with Atlassian Bamboo.')
    end

    def help
      docs_link = ActionController::Base.helpers.link_to _('Learn more.'), Rails.application.routes.url_helpers.help_page_url('user/project/integrations/bamboo'), target: '_blank', rel: 'noopener noreferrer'
      s_('BambooService|Run CI/CD pipelines with Atlassian Bamboo. You must set up automatic revision labeling and a repository trigger in Bamboo. %{docs_link}').html_safe % { docs_link: docs_link.html_safe }
    end

    def self.to_param
      'bamboo'
    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 execute(data)
      return unless supported_events.include?(data[:object_kind])

      get_path("updateAndBuild.action", { buildKey: build_key })
    end

    def calculate_reactive_cache(sha, ref)
      response = try_get_path("rest/api/latest/result/byChangeset/#{sha}")

      { build_page: read_build_page(response), commit_status: read_commit_status(response) }
    end

    private

    def get_build_result(response)
      return if response&.code != 200

      # May be nil if no result, a single result hash, or an array if multiple results for a given changeset.
      result = response.dig('results', 'results', 'result')

      # In case of multiple results, arbitrarily assume the last one is the most relevant.
      return result.last if result.is_a?(Array)

      result
    end

    def read_build_page(response)
      result = get_build_result(response)
      key =
        if result.blank?
          # If actual build link can't be determined, send user to build summary page.
          build_key
        else
          # If actual build link is available, go to build result page.
          result.dig('planResultKey', 'key')
        end

      build_url("browse/#{key}")
    end

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

      result = get_build_result(response)
      status =
        if result.blank?
          'Pending'
        else
          result.dig('buildState')
        end

      return :error unless status.present?

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

    def try_get_path(path, query_params = {})
      params = build_get_params(query_params)
      params[:extra_log_info] = { project_id: project_id }

      Gitlab::HTTP.try_get(build_url(path), params)
    end

    def get_path(path, query_params = {})
      Gitlab::HTTP.get(build_url(path), build_get_params(query_params))
    end

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

    def build_get_params(query_params)
      params = { verify: enable_ssl_verification, query: query_params }
      return params if username.blank? && password.blank?

      query_params[:os_authType] = 'basic'
      params[:basic_auth] = basic_auth
      params
    end

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