client.go

package main

import (
	"bufio"
	"fmt"
	"net"
	"os"
	"strings"
)

func client() {
	println("Create your transaction: ")
	println("ID of transaction:")
	reader := bufio.NewReader(os.Stdin)
	input, _ := reader.ReadString('\n')
	input = strings.TrimSuffix(input, "\n")
	message := input
	println("Sender:")
	reader = bufio.NewReader(os.Stdin)
	input, _ = reader.ReadString('\n')
	input = strings.TrimSuffix(input, "\n")
	message = message + " " + input
	println("Receiver:")
	reader = bufio.NewReader(os.Stdin)
	input, _ = reader.ReadString('\n')
	input = strings.TrimSuffix(input, "\n")
	message = message + " " + input
	println("Amount:")
	reader = bufio.NewReader(os.Stdin)
	input, _ = reader.ReadString('\n')
	input = strings.TrimSuffix(input, "\n")
	message = message + " " + input
	goodInput := false
	for !goodInput {
		println("Is it fake?(Y/N):")
		reader = bufio.NewReader(os.Stdin)
		char, _, err := reader.ReadRune()
		if err != nil {
			fmt.Println(err)
		}
		switch char {
		case 'Y':
			message = message + " " + "false"
			goodInput = true
		case 'N':
			message = message + " " + "true"
			goodInput = true
		default:
			println("type Y or N:")
		}
	}
	goodInput = false
	for !goodInput {
		println("What do you want to do with it? creantTrans or Rate?(C/R):")
		reader = bufio.NewReader(os.Stdin)
		char, _, err := reader.ReadRune()
		if err != nil {
			fmt.Println(err)
		}
		switch char {
		case 'C':
			create_transaction("M" + message)
			goodInput = true
		case 'R':
			rate("N" + message)
			goodInput = true
		default:
			println("type C or R:")
		}
	}
}

func rate(trans string) {
	conn, err := net.Dial("tcp", "34.67.47.51:8000")
	if err != nil {
		fmt.Println(err)
		return
	}
	// what to send
	fmt.Fprintf(conn, trans+"\n")
	conn.Close()
	ln, err := net.Listen("tcp", ":9000") //marche pas en cloud
	if err != nil {
		fmt.Println(err)
		return
	}
	con, err := ln.Accept()
	if err != nil {
		fmt.Println(err)
		return
	}
	message, _ := bufio.NewReader(con).ReadString('\n')
	fmt.Print("Message from server: " + message)
}

func create_transaction(trans string) {
	conn, err := net.Dial("tcp", "34.67.47.51:8000")
	if err != nil {
		fmt.Println(err)
		return
	}
	// what to send
	fmt.Fprintf(conn, trans+"\n")
	conn.Close()
}