#
# Author:: Seth Chisamore (<schisamo@chef.io>)
# Copyright:: Copyright (c) Chef Software Inc.
# License:: Apache License, Version 2.0
#
# Licensed under the Apache License, Version 2.0 (the "License");
# you may not use this file except in compliance with the License.
# You may obtain a copy of the License at
#
#     http://www.apache.org/licenses/LICENSE-2.0
#
# Unless required by applicable law or agreed to in writing, software
# distributed under the License is distributed on an "AS IS" BASIS,
# WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
# See the License for the specific language governing permissions and
# limitations under the License.
#

require "spec_helper"

describe Chef::Resource::RemoteDirectory do
  include_context Chef::Resource::Directory

  let(:directory_base) { "directory_spec" }
  let(:default_mode) { (0777 & ~File.umask).to_s(8) }

  def create_resource
    cookbook_repo = File.expand_path(File.join(CHEF_SPEC_DATA, "cookbooks"))
    Chef::Cookbook::FileVendor.fetch_from_disk(cookbook_repo)
    node = Chef::Node.new
    cl = Chef::CookbookLoader.new(cookbook_repo)
    cl.load_cookbooks
    cookbook_collection = Chef::CookbookCollection.new(cl)
    events = Chef::EventDispatch::Dispatcher.new
    run_context = Chef::RunContext.new(node, cookbook_collection, events)

    resource = Chef::Resource::RemoteDirectory.new(path, run_context)
    resource.source "remotedir"
    resource.cookbook("openldap")
    resource
  end

  def create_extraneous_files
    FileUtils.mkdir_p(File.join(path, "remotesubdir"))
    @existing1 = File.join(path, "marked_for_death.txt")
    @existing2 = File.join(path, "remotesubdir", "marked_for_death_again.txt")
    FileUtils.touch(@existing1)
    FileUtils.touch(@existing2)
  end

  let(:resource) do
    create_resource
  end

  let(:resource_second_pass) do
    create_resource
  end

  # See spec/data/cookbooks/openldap/files/default
  let(:expected_files) do
    [
      File.join(path, "remote_dir_file1.txt"),
      File.join(path, "remote_dir_file2.txt"),
      File.join(path, "remotesubdir", "remote_subdir_file1.txt"),
      File.join(path, "remotesubdir", "remote_subdir_file2.txt"),
      File.join(path, "remotesubdir", ".a_dotfile"),
      File.join(path, ".a_dotdir", ".a_dotfile_in_a_dotdir"),
    ]
  end

  it_behaves_like "a directory resource"

  it_behaves_like "a securable resource with reporting"

  context "when creating the remote directory with purging disabled" do

    context "and the directory does not yet exist" do
      before do
        resource.run_action(:create)
      end

      it "transfers the directory with all contents" do
        expected_files.each do |file_path|
          expect(File).to exist(file_path)
        end
      end

      it "is marked as updated by last action" do
        expect(resource).to be_updated_by_last_action
      end
    end

    context "and there are extraneous files in the directory" do
      before do
        create_extraneous_files
        resource.run_action(:create)
      end

      it "does not modify the expected state of the directory" do
        expected_files.each do |file_path|
          expect(File).to exist(file_path)
        end
      end

      it "does not remove unmanaged files" do
        expect(File).to exist(@existing1)
        expect(File).to exist(@existing2)
      end
    end

    context "and the directory is in the desired state" do
      before do
        resource.run_action(:create)
        resource_second_pass.run_action(:create)
      end

      it "does not modify the expected state of the directory" do
        expected_files.each do |file_path|
          expect(File).to exist(file_path)
        end
      end

      it "is not marked as updated by last action" do
        expect(resource_second_pass).not_to be_updated_by_last_action
      end

    end

    describe "with overwrite disabled" do
      before(:each) do
        resource.purge(false)
        resource.overwrite(false)
      end

      it "leaves modifications alone" do
        FileUtils.mkdir_p(File.join(path, "remotesubdir"))
        modified_file = File.join(path, "remote_dir_file1.txt")
        modified_subdir_file = File.join(path, "remotesubdir", "remote_subdir_file1.txt")
        File.open(modified_file, "a") { |f| f.puts "santa is real" }
        File.open(modified_subdir_file, "a") { |f| f.puts "so is rudolph" }
        modified_file_checksum = sha256_checksum(modified_file)
        modified_subdir_file_checksum = sha256_checksum(modified_subdir_file)

        resource.run_action(:create)
        expect(sha256_checksum(modified_file)).to eq(modified_file_checksum)
        expect(sha256_checksum(modified_subdir_file)).to eq(modified_subdir_file_checksum)
      end
    end
  end

  context "when creating the directory with purging enabled" do
    before(:each) do
      resource.purge(true)
    end

    context "and there are no extraneous files in the directory" do
      before do
        resource.run_action(:create)
      end

      it "creates the directory contents as normal" do
        expected_files.each do |file_path|
          expect(File).to exist(file_path)
        end
      end

    end

    context "and there are extraneous files in the directory" do
      before do
        create_extraneous_files
        resource.run_action(:create)
      end

      it "removes unmanaged files" do
        expect(File).not_to exist(@existing1)
        expect(File).not_to exist(@existing2)
      end

      it "does not modify managed files" do
        expected_files.each do |file_path|
          expect(File).to exist(file_path)
        end
      end

      it "is marked as updated by last action" do
        expect(resource).to be_updated_by_last_action
      end
    end

    context "and there are deeply nested extraneous files in the directory" do
      before do
        FileUtils.mkdir_p(File.join(path, "a", "multiply", "nested", "directory"))
        @existing1 = File.join(path, "a", "foo.txt")
        @existing2 = File.join(path, "a", "multiply", "bar.txt")
        @existing3 = File.join(path, "a", "multiply", "nested", "baz.txt")
        @existing4 = File.join(path, "a", "multiply", "nested", "directory", "qux.txt")
        FileUtils.touch(@existing1)
        FileUtils.touch(@existing2)
        FileUtils.touch(@existing3)
        FileUtils.touch(@existing4)

        resource.run_action(:create)
      end

      it "removes files in subdirectories before files above" do
        expect(File).not_to exist(@existing1)
        expect(File).not_to exist(@existing2)
        expect(File).not_to exist(@existing3)
        expect(File).not_to exist(@existing4)
      end

      it "is marked as updated by last action" do
        expect(resource).to be_updated_by_last_action
      end

    end
  end

end
