ForbidTStruct cop's autocorrect should support new lines and adhere to max line length

lib/rubocop/cop/sorbet/forbid_t_struct.rb

@@ -102,7 +102,7 @@ def on_send(node)
         end
 
         class Property
-          attr_reader :node, :kind, :name, :type, :default, :factory
+          attr_reader :node, :kind, :name, :default, :factory
 
           def initialize(node, kind, name, type, default:, factory:)
             @node = node
@@ -151,6 +151,10 @@ def initialize_assign
           def nilable?
             type.start_with?("T.nilable(")
           end
+
+          def type
+            @type.gsub(/[[:space:]]+/, "").strip
+          end
         end
 
         # @!method t_struct?(node)
@@ -215,8 +219,35 @@ def initialize_method(indent, props)
           sorted_props = props.sort_by { |prop| prop.default || prop.factory || prop.nilable? ? 1 : 0 }
 
           string = +"\n"
-          string << "#{indent}sig { params(#{sorted_props.map(&:initialize_sig_param).join(", ")}).void }\n"
-          string << "#{indent}def initialize(#{sorted_props.map(&:initialize_param).join(", ")})\n"
+
+          line = "#{indent}sig { params(#{sorted_props.map(&:initialize_sig_param).join(", ")}).void }\n"
+          if line.length <= max_line_length
+            string << line
+          else
+            string << "#{indent}sig do\n"
+            string << "#{indent}  params(\n"
+            sorted_props.each do |prop|
+              string << "#{indent}    #{prop.initialize_sig_param}"
+              string << "," if prop != sorted_props.last
+              string << "\n"
+            end
+            string << "#{indent}  ).void\n"
+            string << "#{indent}end\n"
+          end
+
+          line = "#{indent}def initialize(#{sorted_props.map(&:initialize_param).join(", ")})\n"
+          if line.length <= max_line_length
+            string << line
+          else
+            string << "#{indent}def initialize(\n"
+            sorted_props.each do |prop|
+              string << "#{indent}  #{prop.initialize_param}"
+              string << "," if prop != sorted_props.last
+              string << "\n"
+            end
+            string << "#{indent})\n"
+          end
+
           props.each do |prop|
             string << "#{indent}  #{prop.initialize_assign}\n"
           end

spec/rubocop/cop/sorbet/forbid_t_struct_spec.rb

@@ -408,5 +408,82 @@ def initialize(baz:, foo: nil, bar: nil)
 
       expect(autocorrect_source(source)).to(eq(corrected))
     end
+
+    it "strips new lines from type definitions" do
+      source = <<~RUBY
+        class Foo < T::Struct
+          const :foo, T.nilable(
+            Integer
+          )
+        end
+      RUBY
+
+      corrected = <<~RUBY
+        class Foo
+          extend T::Sig
+
+          sig { returns(T.nilable(Integer)) }
+          attr_reader :foo
+
+          sig { params(foo: T.nilable(Integer)).void }
+          def initialize(foo: nil)
+            @foo = foo
+          end
+        end
+      RUBY
+
+      expect(autocorrect_source(source)).to(eq(corrected))
+    end
+
+    it "splits long lines" do
+      source = <<~RUBY
+        class Foo < T::Struct
+          const :foo, LONG_CONSTANT_NAME_WITH_MANY_CHARS, default: LONG_CONSTANT_NAME_WITH_MANY_CHARS
+          const :bar, LONG_CONSTANT_NAME_WITH_MANY_CHARS, default: LONG_CONSTANT_NAME_WITH_MANY_CHARS
+          const :baz, LONG_CONSTANT_NAME_WITH_MANY_CHARS, default: LONG_CONSTANT_NAME_WITH_MANY_CHARS
+          const :qux, LONG_CONSTANT_NAME_WITH_MANY_CHARS, default: LONG_CONSTANT_NAME_WITH_MANY_CHARS
+        end
+      RUBY
+
+      corrected = <<~RUBY
+        class Foo
+          extend T::Sig
+
+          sig { returns(LONG_CONSTANT_NAME_WITH_MANY_CHARS) }
+          attr_reader :foo
+
+          sig { returns(LONG_CONSTANT_NAME_WITH_MANY_CHARS) }
+          attr_reader :bar
+
+          sig { returns(LONG_CONSTANT_NAME_WITH_MANY_CHARS) }
+          attr_reader :baz
+
+          sig { returns(LONG_CONSTANT_NAME_WITH_MANY_CHARS) }
+          attr_reader :qux
+
+          sig do
+            params(
+              foo: LONG_CONSTANT_NAME_WITH_MANY_CHARS,
+              bar: LONG_CONSTANT_NAME_WITH_MANY_CHARS,
+              baz: LONG_CONSTANT_NAME_WITH_MANY_CHARS,
+              qux: LONG_CONSTANT_NAME_WITH_MANY_CHARS
+            ).void
+          end
+          def initialize(
+            foo: LONG_CONSTANT_NAME_WITH_MANY_CHARS,
+            bar: LONG_CONSTANT_NAME_WITH_MANY_CHARS,
+            baz: LONG_CONSTANT_NAME_WITH_MANY_CHARS,
+            qux: LONG_CONSTANT_NAME_WITH_MANY_CHARS
+          )
+            @foo = foo
+            @bar = bar
+            @baz = baz
+            @qux = qux
+          end
+        end
+      RUBY
+
+      expect(autocorrect_source(source)).to(eq(corrected))
+    end
   end
 end