Class: LibyearBundler::Models::Gem

Inherits:
Object
  • Object
show all
Defined in:
lib/libyear_bundler/models/gem.rb

Overview

Logic and information pertaining to the installed and newest versions of a gem

Class Method Summary collapse

Instance Method Summary collapse

Constructor Details

#initialize(name, installed_version, newest_version, release_date_cache) ⇒ Gem

Returns a new instance of Gem.



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# File 'lib/libyear_bundler/models/gem.rb', line 10

def initialize(name, installed_version, newest_version, release_date_cache)
  unless release_date_cache.nil? || release_date_cache.is_a?(ReleaseDateCache)
    raise TypeError, 'Invalid release_date_cache'
  end
  @name = name
  @installed_version = installed_version
  @newest_version = newest_version
  @release_date_cache = release_date_cache
end

Class Method Details

.release_date(gem_name, gem_version) ⇒ Object 



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# File 'lib/libyear_bundler/models/gem.rb', line 21

def release_date(gem_name, gem_version)
  dep = nil
  begin
    dep = ::Bundler::Dependency.new(gem_name, gem_version)
  rescue ::Gem::Requirement::BadRequirementError => e
    $stderr.puts "Could not find release date for: #{gem_name}"
    $stderr.puts(e)
    $stderr.puts(
      "Maybe you used git in your Gemfile, which libyear doesn't support " \
      "yet. Contributions welcome."
    )
    return nil
  end
  tuples, _errors = ::Gem::SpecFetcher.fetcher.search_for_dependency(dep)
  if tuples.empty?
    $stderr.puts "Could not find release date for: #{gem_name}"
    return nil
  end
  tup, source = tuples.first # Gem::NameTuple
  spec = source.fetch_spec(tup) # raises Gem::RemoteFetcher::FetchError
  spec.date.to_date
end

Instance Method Details

#installed_version ⇒ Object 



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# File 'lib/libyear_bundler/models/gem.rb', line 45

def installed_version
  ::Gem::Version.new(@installed_version)
end

#installed_version_release_date ⇒ Object 



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# File 'lib/libyear_bundler/models/gem.rb', line 49

def installed_version_release_date
  if @release_date_cache.nil?
    self.class.release_date(name, installed_version)
  else
    @release_date_cache[name, installed_version]
  end
end

#installed_version_sequence_index ⇒ Object 



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# File 'lib/libyear_bundler/models/gem.rb', line 57

def installed_version_sequence_index
  versions_sequence.index(installed_version.to_s)
end

#libyears ⇒ Object 



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# File 'lib/libyear_bundler/models/gem.rb', line 61

def libyears
  ::LibyearBundler::Calculators::Libyear.calculate(
    installed_version_release_date,
    newest_version_release_date
  )
end

#name ⇒ Object 



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# File 'lib/libyear_bundler/models/gem.rb', line 68

def name
  @name
end

#newest_version ⇒ Object 



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# File 'lib/libyear_bundler/models/gem.rb', line 72

def newest_version
  ::Gem::Version.new(@newest_version)
end

#newest_version_release_date ⇒ Object 



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# File 'lib/libyear_bundler/models/gem.rb', line 80

def newest_version_release_date
  if @release_date_cache.nil?
    self.class.release_date(name, newest_version)
  else
    @release_date_cache[name, newest_version]
  end
end

#newest_version_sequence_index ⇒ Object 



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# File 'lib/libyear_bundler/models/gem.rb', line 76

def newest_version_sequence_index
  versions_sequence.index(newest_version.to_s)
end

#version_number_delta ⇒ Object 



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# File 'lib/libyear_bundler/models/gem.rb', line 88

def version_number_delta
  ::LibyearBundler::Calculators::VersionNumberDelta.calculate(
    installed_version,
    newest_version
  )
end

#version_sequence_delta ⇒ Object 



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# File 'lib/libyear_bundler/models/gem.rb', line 95

def version_sequence_delta
  ::LibyearBundler::Calculators::VersionSequenceDelta.calculate(
    installed_version_sequence_index,
    newest_version_sequence_index
  )
end