module XamarinTestCloud

  # TODO validate dsym against the current application.
  # https://github.com/xamarinhq/test-cloud-command-line/issues/91
  #
  # TODO dsym-file can be relative to workspace
  # https://github.com/xamarinhq/test-cloud-command-line/issues/92
class Dsym

    attr_reader :path

    # Caller should rescue RuntimeError and re-raise.
    # @raise RuntimeError If the dSYM at path is invalid.
    def initialize(path)
      @path = path
      validate!
    end

    def to_s
      "#<DSYM #{@path}>"
    end

    def inspect
      to_s
    end

    def validate!
      extension = File.extname(path)

      if extension != ".dSYM"
        raise RuntimeError, %Q[Invalid dSYM directory.

The --dsym-file must have a dSYM extension.  Found:

#{path}
]
      end

      if !File.exist?(path)
        raise RuntimeError, %Q[Invalid dSYM directory.

The --dsym-file does not exist:

#{path}
]
      end

      if !File.directory?(path)
        raise RuntimeError, %Q[Invalid dSYM directory.

The --dsym-file is not a directory:

#{path}
]
      end

      if dwarf_symbol_files.count > 1
        raise RuntimeError, %Q[Invalid dSYM directory.

The --dsym-file contains more than one symbol file.

Check the contents of #{File.join("Contents", "Resources", "DWARF")} in:

#{path}
]
      end

      if dwarf_symbol_files.count < 1
        raise RuntimeError, %Q[Invalid dSYM directory.

The --dsym-file contains no symbol file.

Check the contents of #{File.join("Contents", "Resources", "DWARF")} in:

#{path}

        #{Dir.glob(File.join(path, "Contents", "Resources", "DWARF", "*" ))}
]
      end

      true
    end

    def remote_path(path_to_app)
      "#{File.basename(path_to_app)}_dSym"
    end

    def symbol_file
      File.expand_path(dwarf_symbol_files[0])
    end

    # Cannot use Dir.glob
    # https://github.com/xamarinhq/test-cloud-command-line/issues/52
    def dwarf_symbol_files
      @dwarf_symbol_files ||= begin
        base = File.join(path, "Contents", "Resources", "DWARF")
        Dir.entries(base).select do |entry|
          !(entry.end_with?('..') || entry.end_with?('.'))
        end.map { |entry| File.join(base, entry) }
      end
    end
  end
end