module Pod
  class Sandbox
    attr_accessor :standard_sandbox

    def standard_sandbox_root
      return root if standard_sandbox.nil?
      standard_sandbox.root
    end
  end

  # The sandbox provides support for the directory that CocoaPods uses for an
  # installation. In this directory the Pods projects, the support files and
  # the sources of the Pods are stored.
  #
  # CocoaPods assumes to have control of the sandbox.
  #
  # Once completed the sandbox will have the following file structure:
  #
  #     Pods
  #     |
  #     +-- Headers
  #     |   +-- Private
  #     |   |   +-- [Pod Name]
  #     |   +-- Public
  #     |       +-- [Pod Name]
  #     |
  #     +-- Local Podspecs
  #     |   +-- External Sources
  #     |   +-- Normal Sources
  #     |
  #     +-- Target Support Files
  #     |   +-- [Target Name]
  #     |       +-- Pods-acknowledgements.markdown
  #     |       +-- Pods-acknowledgements.plist
  #     |       +-- Pods-dummy.m
  #     |       +-- Pods-prefix.pch
  #     |       +-- Pods.xcconfig
  #     |
  #     +-- [Pod Name]
  #     |
  #     +-- Manifest.lock
  #     |
  #     +-- Pods.xcodeproj
  #  (if installation option 'generate_multiple_pod_projects' is enabled)
  #     |
  #     +-- PodTarget1.xcodeproj
  #     |
  #    ...
  #     |
  #     +-- PodTargetN.xcodeproj
  #
  #
  class JxedtPrebuildSandbox < Sandbox
    # [Pod::Sandbox] standard_sandbox
    def self.from_standard_sandbox(sandbox, sandbox_path: nil, real_path_compiler: false)
      prebuild_sandbox_path = Pathname.new(sandbox.root).realpath + '../Pods-Source'
      prebuild_sandbox = new(prebuild_sandbox_path)
      # initialize
      prebuild_sandbox.standard_sandbox = sandbox
      # prepare
      prebuild_sandbox.prepare_dir
      prebuild_sandbox
    end

    def real_path_compiler?
      @real_path_compiler ||= begin
        prebuild_sandbox_path = Jxedt.config.prebuild_sandbox_path
        real_path_compiler = prebuild_sandbox_path && prebuild_sandbox_path.length > 0
        if real_path_compiler
          prebuild_sources_root = Pathname.new(prebuild_sandbox_path)
          prebuild_sources_root.rmtree if prebuild_sources_root.exist?
          prebuild_sources_root.mkpath
        end
        real_path_compiler
      end
    end

    def prepare_dir
      # clear
      root.children.each { |child| child.rmtree if '.xcodeproj' != child.extname }

      # copy
      standard_sandbox.root.children.each do |child|
        # skip headers_root & target_support_files_root & project_path
        should_skip_paths = [standard_sandbox.headers_root, standard_sandbox.target_support_files_root, standard_sandbox.project_path]
        next if should_skip_paths.include?(child)

        should_copy_paths = [standard_sandbox.specifications_root, standard_sandbox.manifest_path]
        if should_copy_paths.include?(child)
          # copy Local Podspecs & manifest path
          FileUtils.cp_r(child, root + child.basename) 
        else
          # 真实的路径去编译，则拷贝文件到prebuild_sandbox
          FileUtils.cp_r(child, sources_root) if real_path_compiler?
        end
      end
    end

    def sources_root
      if real_path_compiler?
        # 真实的路径去编译，则返回prebuild sources root
        return @prebuild_sources_root ||= Pathname.new(Jxedt.config.prebuild_sandbox_path)
      end
      standard_sandbox.root
    end

    def project_path
      root + 'Pods-Source.xcodeproj'
    end

    def clean_source_project!
      return if Jxedt.config.keep_source_project?

      sources_root.rmtree if real_path_compiler? && sources_root.exist?
      root.rmtree if root.exist?
    end
  end
end