require 'parallel'
require 'cocoapods'

require 'swordfish/native/podfile'
require 'swordfish/native/sources_manager'
require 'swordfish/native/installation_options'
require 'gem_version'
require 'swordfish/command/archive'

module Pod
  class Resolver
    if Pod.match_version?('~> 1.6')
      # 其实不用到 resolver_specs_by_target 再改 spec
      # 在这个方法里面，通过修改 dependency 的 source 应该也可以
      # 就是有一点，如果改了之后，对应的 source 没有符合 dependency 的版本
      # 分析依赖阶段就会报错了，没法像 resolver_specs_by_target 一样
      # 没有对应的二进制版本时还可以转到源码源码
      #
      def aggregate_for_dependency(dependency)
        sources_manager = Config.instance.sources_manager
        if dependency&.podspec_repo
          sources_manager.aggregate_for_dependency(dependency)
          # 采用 lock 中的 source ，会导致插件对 source 的先后调整失效
          # elsif (locked_vertex = @locked_dependencies.vertex_named(dependency.name)) && (locked_dependency = locked_vertex.payload) && locked_dependency.podspec_repo
          #   sources_manager.aggregate_for_dependency(locked_dependency)
        else
          @aggregate ||= Source::Aggregate.new(sources)
        end
      end
    end

    if Pod.match_version?('~> 1.4')
      def specifications_for_dependency(dependency, additional_requirements_frozen = [])
        additional_requirements = additional_requirements_frozen.dup.compact
        requirement = Requirement.new(dependency.requirement.as_list + additional_requirements.flat_map(&:as_list))
        if podfile.allow_prerelease? && !requirement.prerelease?
          requirement = Requirement.new(dependency.requirement.as_list.map { |r| r + '.a' } + additional_requirements.flat_map(&:as_list))
        end

        options = if Pod.match_version?('~> 1.7')
                    podfile.installation_options
                  else
                    installation_options
                  end

        if Pod.match_version?('~> 1.8')
          specifications = find_cached_set(dependency)
                           .all_specifications(options.warn_for_multiple_pod_sources, requirement)
        else
          specifications = find_cached_set(dependency)
                           .all_specifications(options.warn_for_multiple_pod_sources)
                           .select { |s| requirement.satisfied_by? s.version }
        end

        specifications
          .map { |s| s.subspec_by_name(dependency.name, false, true) }
          .compact
      end
    end

    if Pod.match_version?('~> 1.6')
      alias old_valid_possibility_version_for_root_name? valid_possibility_version_for_root_name?

      def valid_possibility_version_for_root_name?(requirement, activated, spec)
        return true if podfile.allow_prerelease?

        old_valid_possibility_version_for_root_name?(requirement, activated, spec)
      end
    elsif Pod.match_version?('~> 1.4')
      def requirement_satisfied_by?(requirement, activated, spec)
        version = spec.version
        return false unless requirement.requirement.satisfied_by?(version)

        shared_possibility_versions, prerelease_requirement = possibility_versions_for_root_name(requirement, activated)
        if !shared_possibility_versions.empty? && !shared_possibility_versions.include?(version)
          return false
        end
        if !podfile.allow_prerelease? && version.prerelease? && !prerelease_requirement
          return false
        end
        unless spec_is_platform_compatible?(activated, requirement, spec)
          return false
        end

        true
      end
    end

    # >= 1.4.0 才有 resolver_specs_by_target 以及 ResolverSpecification
    # >= 1.5.0 ResolverSpecification 才有 source，供 install 或者其他操作时，输入 source 变更
    #
    if Pod.match_version?('~> 1.4')
      old_resolver_specs_by_target = instance_method(:resolver_specs_by_target)
      define_method(:resolver_specs_by_target) do

        specs_by_target = old_resolver_specs_by_target.bind(self).call

        if !podfile.use_swordfish_plugin
          return specs_by_target
        end

        sources_manager = Config.instance.sources_manager
        use_source_pods = podfile.use_source_pods

        missing_binary_specs = []
        specs_by_target.each do |target, rspecs|
          # use_binaries 并且 use_source_pods 不包含  本地可过滤
          use_binary_rspecs = if podfile.use_binaries? || podfile.use_binaries_selector
                                rspecs.select do |rspec|
                                  ([rspec.name, rspec.root.name] & use_source_pods).empty? &&
                                    (podfile.use_binaries_selector.nil? || podfile.use_binaries_selector.call(rspec.spec))
                                end
                              else
                                []
                              end

          # Parallel.map(rspecs, in_threads: 8) do |rspec|
          specs_by_target[target] = rspecs.map do |rspec|
            # 含有 subspecs 的组件暂不处理
            # next rspec if rspec.spec.subspec? || rspec.spec.subspecs.any?

            # developments 组件采用默认输入的 spec (development pods 的 source 为 nil)
            # 可以使 :podspec => "htts://IMYFoundation.podspec"可以走下去，by slj
            # unless rspec.spec.respond_to?(:spec_source) && rspec.spec.spec_source
            #   next rspec
            # end
            #
            #

            spec_version = rspec.spec.version
            UI.message 'cocoapods-swordfish 插件'
            UI.message "- 开始处理 #{rspec.spec.name} #{spec_version} 组件."

            # 采用二进制依赖并且不为开发组件
            use_binary = use_binary_rspecs.include?(rspec)

            # source = sources_manager.binary_source
            # # 采用非二进制
            # unless use_binary
            #   # missing_binary_specs << rspec.spec
            #   # next rspec
            #   source = @aggregate.sources.select { |s|
            #     logger.info ""
            #   }
            # end

            # 只实现二进制效果
            # source = use_binary ? sources_manager.binary_source : sources_manager.code_source
            source = sources_manager.binary_source

            begin
              # 从新 source 中获取 spec,在bin archive中会异常，因为找不到
              specification = source.specification(rspec.root.name, spec_version)
              UI.message "#{rspec.root.name} #{spec_version} \r\n specification =#{specification} "
              # 组件是 subspec
              if rspec.spec.subspec?
                specification = specification.subspec_by_name(rspec.name, false, true)
              end
              # 这里可能出现分析依赖的 source 和切换后的 source 对应 specification 的 subspec 对应不上
              # 造成 subspec_by_name 返回 nil，这个是正常现象
              next unless specification

              used_by_only = if Pod.match_version?('~> 1.7')
                               rspec.used_by_non_library_targets_only
                             else
                               rspec.used_by_tests_only
                             end
              # used_by_only = rspec.respond_to?(:used_by_tests_only) ? rspec.used_by_tests_only : rspec.used_by_non_library_targets_only
              # 组装新的 rspec ，替换原 rspec
              if use_binary
                rspec = ResolverSpecification.new(specification, used_by_only, source)
                UI.message "组装新的 rspec ，替换原 rspec #{rspec.root.name} #{spec_version} \r\n specification =#{specification} \r\n #{rspec} "

              end

            rescue Pod::StandardError => e
              # 没有从新的 source 找到对应版本组件，直接返回原 rspec

              # missing_binary_specs << rspec.spec if use_binary
              missing_binary_specs << rspec.spec
              rspec
            end

            rspec
          end.compact
        end

        if missing_binary_specs.any?
          missing_binary_specs.uniq.each do |spec|
            UI.message "【#{spec.name} | #{spec.version}】组件无对应二进制版本 , 将采用源码依赖."
          end
          Pod::Command::Swordfish::Archive.missing_binary_specs(missing_binary_specs)

          #缓存没有二进制组件到spec文件，local_psec_dir 目录
          sources_sepc = []
          des_dir = Ocean::Config::Builder.instance.local_psec_dir
          FileUtils.rm_f(des_dir) if File.exist?des_dir
          Dir.mkdir des_dir unless File.exist?des_dir
          missing_binary_specs.uniq.each do |spec|
            next if spec.name.include?('/')

            # spec_git_res = false
            # Ocean::Config::Builder.instance.ignore_git_list.each do |ignore_git|
            #   spec_git_res = spec.source[:git] && spec.source[:git].include?(ignore_git)
            #   break if spec_git_res
            # end
            # next if spec_git_res

            #获取没有制作二进制版本的spec集合
            sources_sepc << spec
            unless spec.defined_in_file.nil?
              FileUtils.cp("#{spec.defined_in_file}", "#{des_dir}")
            end
          end
        end

        specs_by_target
      end
    end
  end

end