module Pod
  module Generator
    class CopyResourcesScript
      # @return [Hash{String, Array{String}] A list of files relative to the
      #         project pods root, keyed by build configuration.
      #
      attr_reader :resources_by_config

      # @return [Platform] The platform of the library for which the copy
      #         resources script is needed.
      #
      attr_reader :platform

      # @param  [Hash{String, Array{String}]
      #         resources_by_config @see resources_by_config
      # @param  [Platform] platform @see platform
      #
      def initialize(resources_by_config, platform)
        @resources_by_config = resources_by_config
        @platform = platform
      end

      # Saves the resource script to the given pathname.
      #
      # @param  [Pathname] pathname
      #         The path where the copy resources script should be saved.
      #
      # @return [void]
      #
      def save_as(pathname)
        pathname.open('w') do |file|
          file.puts(script)
        end
        File.chmod(0755, pathname.to_s)
      end

      private

      # @!group Private Helpers

      # @return [Hash{Symbol=>Version}] The minimum deployment target which
      #         supports the `--reference-external-strings-file` option for
      #         the `ibtool` command.
      #
      EXTERNAL_STRINGS_FILE_MIMINUM_DEPLOYMENT_TARGET = {
        :ios => Version.new('6.0'),
        :osx => Version.new('10.8'),
      }

      # @return [Bool] Whether the external strings file is supported by the
      #         `ibtool` according to the deployment target of the platform.
      #
      def use_external_strings_file?
        minimum_deployment_target = EXTERNAL_STRINGS_FILE_MIMINUM_DEPLOYMENT_TARGET[platform.name]
        platform.deployment_target >= minimum_deployment_target
      end

      # @return [String] The install resources shell function.
      #
      def install_resources_function
        if use_external_strings_file?
          INSTALL_RESOURCES_FUNCTION
        else
          INSTALL_RESOURCES_FUNCTION.gsub(' --reference-external-strings-file', '')
        end
      end

      # @return [String] The contents of the copy resources script.
      #
      def script
        # Define install function
        script = install_resources_function

        # Call function for each configuration-dependent resource
        resources_by_config.each do |config, resources|
          unless resources.empty?
            script += %(if [[ "$CONFIGURATION" == "#{config}" ]]; then\n)
            resources.each do |resource|
              script += %(  install_resource "#{resource}"\n)
            end
            script += "fi\n"
          end
        end

        script += RSYNC_CALL
        script += XCASSETS_COMPILE
        script
      end

      INSTALL_RESOURCES_FUNCTION = <<EOS
#!/bin/sh
set -e

mkdir -p "${CONFIGURATION_BUILD_DIR}/${UNLOCALIZED_RESOURCES_FOLDER_PATH}"

RESOURCES_TO_COPY=${PODS_ROOT}/resources-to-copy-${TARGETNAME}.txt
> "$RESOURCES_TO_COPY"

XCASSET_FILES=""

install_resource()
{
  case $1 in
    *\.storyboard)
      echo "ibtool --reference-external-strings-file --errors --warnings --notices --output-format human-readable-text --compile ${CONFIGURATION_BUILD_DIR}/${UNLOCALIZED_RESOURCES_FOLDER_PATH}/`basename \\"$1\\" .storyboard`.storyboardc ${PODS_ROOT}/$1 --sdk ${SDKROOT}"
      ibtool --reference-external-strings-file --errors --warnings --notices --output-format human-readable-text --compile "${CONFIGURATION_BUILD_DIR}/${UNLOCALIZED_RESOURCES_FOLDER_PATH}/`basename \\"$1\\" .storyboard`.storyboardc" "${PODS_ROOT}/$1" --sdk "${SDKROOT}"
      ;;
    *\.xib)
        echo "ibtool --reference-external-strings-file --errors --warnings --notices --output-format human-readable-text --compile ${CONFIGURATION_BUILD_DIR}/${UNLOCALIZED_RESOURCES_FOLDER_PATH}/`basename \\"$1\\" .xib`.nib ${PODS_ROOT}/$1 --sdk ${SDKROOT}"
      ibtool --reference-external-strings-file --errors --warnings --notices --output-format human-readable-text --compile "${CONFIGURATION_BUILD_DIR}/${UNLOCALIZED_RESOURCES_FOLDER_PATH}/`basename \\"$1\\" .xib`.nib" "${PODS_ROOT}/$1" --sdk "${SDKROOT}"
      ;;
    *.framework)
      echo "mkdir -p ${CONFIGURATION_BUILD_DIR}/${FRAMEWORKS_FOLDER_PATH}"
      mkdir -p "${CONFIGURATION_BUILD_DIR}/${FRAMEWORKS_FOLDER_PATH}"
      echo "rsync -av ${PODS_ROOT}/$1 ${CONFIGURATION_BUILD_DIR}/${FRAMEWORKS_FOLDER_PATH}"
      rsync -av "${PODS_ROOT}/$1" "${CONFIGURATION_BUILD_DIR}/${FRAMEWORKS_FOLDER_PATH}"
      ;;
    *.xcdatamodel)
      echo "xcrun momc \\"${PODS_ROOT}/$1\\" \\"${CONFIGURATION_BUILD_DIR}/${UNLOCALIZED_RESOURCES_FOLDER_PATH}/`basename "$1"`.mom\\""
      xcrun momc "${PODS_ROOT}/$1" "${CONFIGURATION_BUILD_DIR}/${UNLOCALIZED_RESOURCES_FOLDER_PATH}/`basename "$1" .xcdatamodel`.mom"
      ;;
    *.xcdatamodeld)
      echo "xcrun momc \\"${PODS_ROOT}/$1\\" \\"${CONFIGURATION_BUILD_DIR}/${UNLOCALIZED_RESOURCES_FOLDER_PATH}/`basename "$1" .xcdatamodeld`.momd\\""
      xcrun momc "${PODS_ROOT}/$1" "${CONFIGURATION_BUILD_DIR}/${UNLOCALIZED_RESOURCES_FOLDER_PATH}/`basename "$1" .xcdatamodeld`.momd"
      ;;
    *.xcmappingmodel)
      echo "xcrun mapc \\"${PODS_ROOT}/$1\\" \\"${CONFIGURATION_BUILD_DIR}/${UNLOCALIZED_RESOURCES_FOLDER_PATH}/`basename "$1" .xcmappingmodel`.cdm\\""
      xcrun mapc "${PODS_ROOT}/$1" "${CONFIGURATION_BUILD_DIR}/${UNLOCALIZED_RESOURCES_FOLDER_PATH}/`basename "$1" .xcmappingmodel`.cdm"
      ;;
    *.xcassets)
      XCASSET_FILES="$XCASSET_FILES '${PODS_ROOT}/$1'"
      ;;
    /*)
      echo "$1"
      echo "$1" >> "$RESOURCES_TO_COPY"
      ;;
    *)
      echo "${PODS_ROOT}/$1"
      echo "${PODS_ROOT}/$1" >> "$RESOURCES_TO_COPY"
      ;;
  esac
}
EOS

      RSYNC_CALL = <<EOS

rsync -avr --copy-links --no-relative --exclude '*/.svn/*' --files-from="$RESOURCES_TO_COPY" / "${CONFIGURATION_BUILD_DIR}/${UNLOCALIZED_RESOURCES_FOLDER_PATH}"
if [[ "${ACTION}" == "install" ]]; then
  rsync -avr --copy-links --no-relative --exclude '*/.svn/*' --files-from="$RESOURCES_TO_COPY" / "${INSTALL_DIR}/${UNLOCALIZED_RESOURCES_FOLDER_PATH}"
fi
rm -f "$RESOURCES_TO_COPY"
EOS

      XCASSETS_COMPILE = <<EOS

if [[ -n "${WRAPPER_EXTENSION}" ]] && [ "`xcrun --find actool`" ] && [ -n "$XCASSET_FILES" ]
then
  case "${TARGETED_DEVICE_FAMILY}" in
    1,2)
      TARGET_DEVICE_ARGS="--target-device ipad --target-device iphone"
      ;;
    1)
      TARGET_DEVICE_ARGS="--target-device iphone"
      ;;
    2)
      TARGET_DEVICE_ARGS="--target-device ipad"
      ;;
    *)
      TARGET_DEVICE_ARGS="--target-device mac"
      ;;
  esac
  while read line; do XCASSET_FILES="$XCASSET_FILES '$line'"; done <<<$(find "$PWD" -name "*.xcassets" | egrep -v "^$PODS_ROOT")
  echo $XCASSET_FILES | xargs actool --output-format human-readable-text --notices --warnings --platform "${PLATFORM_NAME}" --minimum-deployment-target "${IPHONEOS_DEPLOYMENT_TARGET}" ${TARGET_DEVICE_ARGS} --compress-pngs --compile "${BUILT_PRODUCTS_DIR}/${UNLOCALIZED_RESOURCES_FOLDER_PATH}"
fi
EOS
    end
  end
end
