package main

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

func main() {

	ch1 := make(chan interface{})
	ch2 := make(chan interface{})
	ch3 := make(chan interface{})
	wg := &sync.WaitGroup{}

	wg.Add(3)

	go func() {
		data := <-ch1
		time.Sleep(time.Second * 2)
		defer wg.Done()
		fmt.Println("Hi I have run First with", data)
		output := fmt.Sprint("Outout 1")
		defer close(ch1)
		ch2 <- output
	}()
	go func() {
		data := <-ch2
		time.Sleep(time.Second * 3)
		fmt.Println("Hi I have run Second with", data)
		output := "Output 2"
		defer close(ch2)
		ch3 <- output
		defer wg.Done()

	}()
	go func() {
		data := <-ch3
		time.Sleep(time.Second * 4)
		defer close(ch3)
		fmt.Println("Hi I have run Third with", data)
		defer wg.Done()
	}()

	ch1 <- "First Raw Data"
	wg.Wait()

}