module VagrantPlugins
  module Puppet
    module Config
      class Puppet < Vagrant.plugin("2", :config)

        # The path to Puppet's bin/ directory.
        # @return [String]
        attr_accessor :binary_path

        attr_accessor :facter
        attr_accessor :structured_facts
        attr_accessor :hiera_config_path
        attr_accessor :manifest_file
        attr_accessor :manifests_path
        attr_accessor :environment
        attr_accessor :environment_path
        attr_accessor :environment_variables
        attr_accessor :module_path
        attr_accessor :options
        attr_accessor :synced_folder_type
        attr_accessor :synced_folder_args
        attr_accessor :temp_dir
        attr_accessor :working_directory

        def initialize
          super

          @binary_path           = UNSET_VALUE
          @hiera_config_path     = UNSET_VALUE
          @manifest_file         = UNSET_VALUE
          @manifests_path        = UNSET_VALUE
          @environment           = UNSET_VALUE
          @environment_path      = UNSET_VALUE
          @environment_variables = UNSET_VALUE
          @module_path           = UNSET_VALUE
          @options               = []
          @facter                = {}
          @synced_folder_type    = UNSET_VALUE
          @temp_dir              = UNSET_VALUE
          @working_directory     = UNSET_VALUE
          @structured_facts   = UNSET_VALUE
        end

        def nfs=(value)
          puts "DEPRECATION: The 'nfs' setting for the Puppet provisioner is"
          puts "deprecated. Please use the 'synced_folder_type' setting instead."
          puts "The 'nfs' setting will be removed in the next version of Vagrant."

          if value
            @synced_folder_type = "nfs"
          else
            @synced_folder_type = nil
          end
        end

        def merge(other)
          super.tap do |result|
            result.facter  = @facter.merge(other.facter)
          end
        end

        def finalize!
          super

          if @environment_path == UNSET_VALUE && @manifests_path == UNSET_VALUE
            #If both are unset, assume 'manifests' mode for now. TBD: Switch to environments by default?
            @manifests_path = [:host, "manifests"]
          end

          # If the paths are just strings, assume they are 'host' paths (rather than guest)
          if @environment_path != UNSET_VALUE && !@environment_path.is_a?(Array)
            @environment_path = [:host, @environment_path]
          end
          if @manifests_path != UNSET_VALUE && !@manifests_path.is_a?(Array)
            @manifests_path = [:host, @manifests_path]
          end
          @hiera_config_path = nil if @hiera_config_path == UNSET_VALUE

          if @environment_path == UNSET_VALUE
            @manifests_path[0] = @manifests_path[0].to_sym
            @environment_path = nil
            @manifest_file  = "default.pp" if @manifest_file == UNSET_VALUE
          else
            @environment_path[0] = @environment_path[0].to_sym
            @environment  = "production" if @environment == UNSET_VALUE
            if @manifests_path == UNSET_VALUE
              @manifests_path = nil
            end
            if @manifest_file == UNSET_VALUE
              @manifest_file = nil
            end
          end

          if @environment_variables == UNSET_VALUE
            @environment_variables = {}
          end

          @binary_path        = nil     if @binary_path == UNSET_VALUE
          @module_path        = nil     if @module_path == UNSET_VALUE
          @synced_folder_type = nil     if @synced_folder_type == UNSET_VALUE
          @synced_folder_args = nil if @synced_folder_args == UNSET_VALUE
          @temp_dir           = "/tmp/vagrant-puppet" if @temp_dir == UNSET_VALUE
          @working_directory  = nil     if @working_directory == UNSET_VALUE
          @structured_facts   = nil     if @structured_facts == UNSET_VALUE
        end

        # Returns the module paths as an array of paths expanded relative to the
        # root path.
        def expanded_module_paths(root_path)
          return [] if !module_path

          # Get all the paths and expand them relative to the root path, returning
          # the array of expanded paths
          paths = module_path
          paths = [paths] if !paths.is_a?(Array)
          paths.map do |path|
            Pathname.new(path).expand_path(root_path)
          end
        end

        def validate(machine)
          errors = _detected_errors

          # Calculate the manifests and module paths based on env
          this_expanded_module_paths = expanded_module_paths(machine.env.root_path)

          # Manifests path/file validation
          if manifests_path != nil && manifests_path[0].to_sym == :host
            expanded_path = Pathname.new(manifests_path[1]).
              expand_path(machine.env.root_path)
            if !expanded_path.directory?
              errors << I18n.t("vagrant.provisioners.puppet.manifests_path_missing",
                               path: expanded_path.to_s)
            else
              expanded_manifest_file = expanded_path.join(manifest_file)
              if !expanded_manifest_file.file? && !expanded_manifest_file.directory?
                errors << I18n.t("vagrant.provisioners.puppet.manifest_missing",
                                 manifest: expanded_manifest_file.to_s)
              end
            end
          elsif environment_path != nil && environment_path[0].to_sym == :host
            # Environments path/file validation
            expanded_path = Pathname.new(environment_path[1]).
              expand_path(machine.env.root_path)
            if !expanded_path.directory?
              errors << I18n.t("vagrant.provisioners.puppet.environment_path_missing",
                               path: expanded_path.to_s)
            else
              expanded_environment_file = expanded_path.join(environment)
              if !expanded_environment_file.file? && !expanded_environment_file.directory?
                errors << I18n.t("vagrant.provisioners.puppet.environment_missing",
                                 environment: environment.to_s,
                                 environmentpath: expanded_path.to_s)
              end
            end
          end

          if environment_path == nil && manifests_path == nil
              errors << "Please specify either a Puppet environment_path + environment (preferred) or manifests_path (deprecated)."
          end

          # Module paths validation
          this_expanded_module_paths.each do |path|
            if !path.directory?
              errors << I18n.t("vagrant.provisioners.puppet.module_path_missing",
                               path: path)
            end
          end
          { "puppet provisioner" => errors }
        end
      end
    end
  end
end