elm.rb

module PackageManager
  class Elm < Base
    HAS_VERSIONS = true
    HAS_DEPENDENCIES = true
    BIBLIOTHECARY_SUPPORT = true
    URL = 'http://package.elm-lang.org/'
    COLOR = '#60B5CC'

    def self.package_link(project, version = nil)
      "http://package.elm-lang.org/packages/#{project.name}/#{version || 'latest'}"
    end

    def self.download_url(name, version = 'master')
      "https://github.com/#{name}/archive/#{version}.zip"
    end

    def self.install_instructions(project, version = nil)
      "elm-package install #{project.name} #{version}"
    end

    def self.project_names
      projects.keys
    end

    def self.projects
      @projects ||= begin
        prjs = {}
        get('http://package.elm-lang.org/all-packages').each do |prj|
          prjs[prj['name']] = prj
        end
        prjs
      end
    end

    def self.recent_names
      get("http://package.elm-lang.org/new-packages")
    end

    def self.project(name)
      projects[name]
    end

    def self.mapping(project)
      {
        :name => project["name"],
        :description => project["summary"],
        :repository_url => "https://github.com/#{project["name"]}"
      }
    end

    def self.versions(project)
      project['versions'].map do |v|
        { :number => v }
      end
    end

    def self.dependencies(name, version, project)
      find_and_map_dependencies(name, version, project)
    end

    def self.find_dependencies(name, version)
      url = "https://raw.githubusercontent.com/#{name}/#{version}/elm-package.json"

      begin
        response = request(url)
        if response.status == 200
          contents = response.body
          dependencies = Bibliothecary.analyse_file('elm-package.json', contents).first.try(:fetch, :dependencies)
          return dependencies
        else
          return []
        end
      rescue
        []
      end
    end
  end
end