Remove CaskSource API

Library/Homebrew/api.rb

@@ -3,7 +3,6 @@
 
 require "api/analytics"
 require "api/cask"
-require "api/cask-source"
 require "api/formula"
 require "api/versions"
 require "extend/cachable"
@@ -57,12 +56,13 @@ module Homebrew
     end
 
     sig { params(token: String, git_head: T.nilable(String)).returns(String) }
-    def fetch_source(token, git_head: nil)
+    def fetch_file_source(filepath, repo:, git_head: nil)
       git_head ||= "master"
-      endpoint = "#{git_head}/Casks/#{token}.rb"
+      endpoint = "#{git_head}/#{filepath}"
       return cache[endpoint] if cache.present? && cache.key?(endpoint)
 
-      raw_url = "https://raw.githubusercontent.com/Homebrew/homebrew-cask/#{endpoint}"
+      raw_url = "https://raw.githubusercontent.com/#{repo}/#{endpoint}"
+      puts "Fetching #{raw_url}..."
       output = Utils::Curl.curl_output("--fail", raw_url, max_time: 5)
       raise ArgumentError, "No file found at #{Tty.underline}#{raw_url}#{Tty.reset}" unless output.success?
 

Library/Homebrew/api/cask-source.rb

@@ -1,29 +0,0 @@
-# typed: false
-# frozen_string_literal: true
-
-module Homebrew
-  module API
-    # Helper functions for using the cask source API.
-    #
-    # @api private
-    module CaskSource
-      class << self
-        extend T::Sig
-
-        sig { params(token: String, git_head: T.nilable(String)).returns(Hash) }
-        def fetch(token, git_head: nil)
-          token = token.sub(%r{^homebrew/cask/}, "")
-          Homebrew::API.fetch_source token, git_head: git_head
-        end
-
-        sig { params(token: String).returns(T::Boolean) }
-        def available?(token)
-          fetch token
-          true
-        rescue ArgumentError
-          false
-        end
-      end
-    end
-  end
-end

Library/Homebrew/api/cask.rb

@@ -10,9 +10,14 @@ module Homebrew
       class << self
         extend T::Sig
 
-        sig { params(name: String).returns(Hash) }
-        def fetch(name)
-          Homebrew::API.fetch "cask/#{name}.json"
+        sig { params(token: String).returns(Hash) }
+        def fetch(token)
+          Homebrew::API.fetch "cask/#{token}.json"
+        end
+
+        sig { params(token: String, git_head: T.nilable(String)).returns(String) }
+        def fetch_source(token, git_head: nil)
+          Homebrew::API.fetch_file_source "Casks/#{token}.rb", repo: "Homebrew/homebrew-cask", git_head: git_head
         end
 
         sig { returns(Hash) }

Library/Homebrew/cask/cask_loader.rb

@@ -212,9 +212,9 @@ module Cask
 
         json_cask.deep_symbolize_keys!
 
-        # Use the cask-source API if there are any `*flight` blocks
+        # Download and use the cask source file if there are any `*flight` blocks
         if json_cask[:artifacts].any? { |artifact| FLIGHT_STANZAS.include?(artifact.keys.first) }
-          cask_source = Homebrew::API::CaskSource.fetch(token, git_head: json_cask[:tap_git_head])
+          cask_source = Homebrew::API::Cask.fetch_source(token, git_head: json_cask[:tap_git_head])
           return FromContentLoader.new(cask_source).load(config: config)
         end
 
@@ -372,7 +372,7 @@ module Cask
         return loader_class.new(ref)
       end
 
-      if Homebrew::EnvConfig.install_from_api? && !need_path && Homebrew::API::CaskSource.available?(ref)
+      if Homebrew::EnvConfig.install_from_api? && !need_path && Homebrew::API::Cask.all_casks.key?(ref)
         return FromAPILoader.new(ref)
       end