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path: root/app/services/ci/create_pipeline_builds_service.rb
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module Ci
  class CreatePipelineBuildsService < BaseService
    attr_reader :pipeline

    def execute(pipeline)
      @pipeline = pipeline

      new_builds.map do |build_attributes|
        create_build(build_attributes)
      end
    end

    def project
      pipeline.project
    end

    private

    def create_build(build_attributes)
      build_attributes = build_attributes.merge(
        pipeline: pipeline,
        project: project,
        ref: pipeline.ref,
        tag: pipeline.tag,
        user: current_user
      )
      build = pipeline.builds.create(build_attributes)

      # Create the environment before the build starts. This sets its slug and
      # makes it available as an environment variable
      project.environments.find_or_create_by(name: build.expanded_environment_name) if
        build.has_environment?

      build
    end

    def new_builds
      @new_builds ||= pipeline.config_builds_attributes.
        reject { |build| existing_build_names.include?(build[:name]) }
    end

    def existing_build_names
      @existing_build_names ||= pipeline.builds.pluck(:name)
    end
  end
end