Added parallel downloads setting (not in gui options yet), added a thread pool for downloading multiple packages at once- quite helpful for TSR 😁, fixed download resuming (used wrong file mode...)

lib/application_manager/pool.rb

@@ -0,0 +1,89 @@
+class W3DHub
+  class ApplicationManager
+    class Pool
+      def initialize(workers:)
+        @workers = workers.times.collect { Worker.new }
+        @jobs = []
+      end
+
+      def add_job(job)
+        @jobs << job
+      end
+
+      def manage_pool
+        while (@jobs.size.positive? || @workers.any?(&:busy?))
+          feed_pool unless @jobs.size.zero?
+
+          sleep 0.1
+        end
+      end
+
+      def feed_pool
+        @workers.select(&:available?).each do |worker|
+          worker.feed(@jobs.shift)
+        end
+      end
+
+      class Worker
+        def initialize
+          @die = false
+          @job = nil
+
+          Thread.new do
+            until (@die)
+              @job.process if @job && @job.waiting?
+              @job = nil
+              sleep 0.1
+            end
+          end
+        end
+
+        def feed(job)
+          raise "Worker already processing a job!" if @job&.processing?
+
+          @job = job
+        end
+
+        def die!
+          @die = true
+        end
+
+        def available?
+          @job.nil?
+        end
+
+        def busy?
+          !available?
+        end
+      end
+
+      class Job
+        def initialize(block)
+          @block = block
+
+          @state = :waiting
+        end
+
+        def waiting?
+          @state == :waiting
+        end
+
+        def processing?
+          @state == :processing
+        end
+
+        def complete?
+          @state == :complete
+        end
+
+        def process
+          @state = :processing
+
+          @block.call
+
+          @state == :complete
+        end
+      end
+    end
+  end
+end