app/finders/environments_finder.rb


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# frozen_string_literal: true

class EnvironmentsFinder
  attr_reader :project, :current_user, :params

  InvalidStatesError = Class.new(StandardError)

  def initialize(project, current_user, params = {})
    @project = project
    @current_user = current_user
    @params = params
  end

  def execute
    environments = project.environments
    environments = by_name(environments)
    environments = by_search(environments)

    # Raises InvalidStatesError if params[:states] contains invalid states.
    by_states(environments)
  end

  private

  def by_name(environments)
    if params[:name].present?
      environments.for_name(params[:name])
    else
      environments
    end
  end

  def by_search(environments)
    if params[:search].present?
      environments.for_name_like(params[:search], limit: nil)
    else
      environments
    end
  end

  def by_states(environments)
    if params[:states].present?
      environments_with_states(environments)
    else
      environments
    end
  end

  def environments_with_states(environments)
    # Convert to array of strings
    states = Array(params[:states]).map(&:to_s)

    raise InvalidStatesError, _('Requested states are invalid') unless valid_states?(states)

    environments.with_states(states)
  end

  def valid_states?(states)
    valid_states = Environment.valid_states.map(&:to_s)

    (states - valid_states).empty?
  end
end