module RBS
  module Collection
    module Sources
      def self.from_config_entry: (source_entry) -> _Source

      interface _Source
        def has?: (Config::gem_entry) -> boolish
        def versions: (Config::gem_entry) -> Array[String]
        def install: (dest: Pathname, config_entry: Config::gem_entry, stdout: CLI::_IO) -> void
        def to_lockfile: () -> source_entry
        def manifest_of: (Config::gem_entry) -> manifest_entry?
        def dependencies_of: (Config::gem_entry) -> Array[{"name" => String}]?
      end

      type source_entry = Git::source_entry
                        | Stdlib::source_entry
                        | Rubygems::source_entry

      type manifest_entry = {
        "dependencies" => Array[{"name" => String}]?,
      }

      module Base : _Source
        def dependencies_of: (Config::gem_entry config_entry) -> Array[{"name" => String}]?
      end

      class Git
        include Base

        METADATA_FILENAME: String

        type source_entry = {
          'type' => 'git',
          'name' => String,
          'remote' => String,
          'revision' => String,
          'repo_dir' => String?,
        }

        class CommandError < StandardError
        end

        attr_reader name: String
        attr_reader remote: String
        attr_reader repo_dir: String

        def initialize: (name: String, revision: String, remote: String, repo_dir: String?) -> untyped

        def has?: (Config::gem_entry) -> bool

        def versions: (Config::gem_entry) -> Array[String]

        def install: (dest: Pathname, config_entry: Config::gem_entry, stdout: CLI::_IO) -> void

        def to_lockfile: () -> source_entry

        def manifest_of: (Config::gem_entry) -> manifest_entry?

        private

        @git_dir: Pathname?

        @resolved_revision: String?

        def _install: (dest: Pathname , config_entry: Config::gem_entry) -> void

        def cp_r: (Pathname, Pathname) -> void

        def setup!: (revision: String) -> void

        def need_to_fetch?: (String revision ) -> bool

        def git_dir: () -> Pathname

        def gem_repo_dir: () -> Pathname

        def with_revision: [T] () { () -> T } -> T

        def resolved_revision: () -> String

        def resolve_revision: () -> String

        def git: (*String cmd, **untyped opt) -> String

        def sh!: (*String cmd, **untyped opt) -> String

        def format_config_entry: (Config::gem_entry) -> String
      end

      # signatures that are bundled in rbs gem under the stdlib/ directory
      class Stdlib

        REPO: Repository

        include Base

        type source_entry =  {
          'type' => 'stdlib',
        }

        # polyfill of singleton module
        def self.instance: () -> instance

        def has?: (Config::gem_entry) -> boolish

        def versions: (Config::gem_entry) -> Array[String]

        def install: (dest: Pathname, config_entry: Config::gem_entry, stdout: CLI::_IO) -> void

        def to_lockfile: () -> source_entry

        def manifest_of: (Config::gem_entry) -> manifest_entry?

        private

        def lookup: (Config::gem_entry) -> Pathname?
      end

      # sig/ directory
      class Rubygems
        include Base

        type source_entry = {
          'type' => 'rubygems',
        }

        # polyfill of singleton module
        def self.instance: () -> instance

        def has?: (Config::gem_entry) -> boolish
        def versions: (Config::gem_entry) -> Array[String]
        def install: (dest: Pathname, config_entry: Config::gem_entry, stdout: CLI::_IO) -> void
        def to_lockfile: () -> source_entry
        def manifest_of: (Config::gem_entry) -> manifest_entry?

        private

        def gem_sig_path: (Config::gem_entry) -> [Gem::Specification, Pathname]?
      end
    end
  end
end