#1: Rough implementation of textures queue

api/mojang/queue/queue.go

@@ -0,0 +1,51 @@
+// Based on the implementation from https://flaviocopes.com/golang-data-structure-queue/
+
+package queue
+
+import (
+	"sync"
+
+	"github.com/elyby/chrly/api/mojang"
+)
+
+type Job struct {
+	Username  string
+	RespondTo chan *mojang.SignedTexturesResponse
+}
+
+type JobsQueue struct {
+	items []*Job
+	lock  sync.RWMutex
+}
+
+func (s *JobsQueue) New() *JobsQueue {
+	s.items = []*Job{}
+	return s
+}
+
+func (s *JobsQueue) Enqueue(t *Job) {
+	s.lock.Lock()
+	s.items = append(s.items, t)
+	s.lock.Unlock()
+}
+
+func (s *JobsQueue) Dequeue(n int) []*Job {
+	s.lock.Lock()
+	if n > s.Size() {
+		n = s.Size()
+	}
+
+	items := s.items[0:n]
+	s.items = s.items[n:len(s.items)]
+	s.lock.Unlock()
+
+	return items
+}
+
+func (s *JobsQueue) IsEmpty() bool {
+	return len(s.items) == 0
+}
+
+func (s *JobsQueue) Size() int {
+	return len(s.items)
+}