//++++++++++++++++++++++++++++++++++++++++
// 《Go语言高级开发与实战》源码
//++++++++++++++++++++++++++++++++++++++++
// Author:廖显东（ShirDon）
// Blog:https://www.shirdon.com/
// 知乎：https://www.zhihu.com/people/shirdonl
// 公众号:源码大数据
// 仓库地址：https://gitee.com/shirdonl/goAdvanced
// 仓库地址：https://github.com/shirdonl/goAdvanced
//++++++++++++++++++++++++++++++++++++++++

package main

import (
	"fmt"
)

//工序1采购
func Buy(n int) <-chan string {
	out := make(chan string)
	go func() {
		defer close(out)
		for i := 1; i <= n; i++ {
			out <- fmt.Sprint("配件", i)
		}
	}()
	return out
}

//工序2组装
func Build(in <-chan string) <-chan string {
	out := make(chan string)
	go func() {
		defer close(out)
		for c := range in {
			out <- "组装(" + c + ")"
		}
	}()
	return out
}

//工序3打包
func Pack(in <-chan string) <-chan string {
	out := make(chan string)
	go func() {
		defer close(out)
		for c := range in {
			out <- "打包(" + c + ")"
		}
	}()
	return out
}

func main() {
	//采购6套配件
	accessories := Buy(6)
	//组装6部电脑
	computers := Build(accessories)
	//打包它们以便售卖
	packs := Pack(computers)
	//输出测试
	for p := range packs {
		fmt.Println(p)
	}
}

//打包(组装(配件1))
//打包(组装(配件2))
//打包(组装(配件3))
//打包(组装(配件4))
//打包(组装(配件5))
//打包(组装(配件6))