package main

import (
	"fmt"
	"sync"
	"time"
)

var (
	IdempotencyStore = make(map[string]string)
	mu               sync.Mutex
)

func EnrollCourseIdempotent(key string) string {
	mu.Lock()
	if val, ok := IdempotencyStore[key]; ok {
		mu.Unlock()
		return fmt.Sprintf("Hasil cache: %s", val)
	}
	mu.Unlock()

	// proses baru
	fmt.Println("Memproses enrollment baru...")
	time.Sleep(1500 * time.Millisecond)

	result := "Enrollment berhasil untuk " + key

	mu.Lock()
	IdempotencyStore[key] = result
	mu.Unlock()

	return result
}