weather-cli/cmd/client/main.go

package main

import (
	"bufio"
	"fmt"
	"log"
	"os"
	"strings"
	"sync"
)

func main() {

	var option string
	var wg sync.WaitGroup

	fmt.Println("\n==============================================")
	fmt.Println("| Welcome to the OpenWeatherMap-gRPC Client! |")
	fmt.Print("==============================================\n")

	for option != "0" {

		fmt.Print("\nMain Menu\n---------\n\n")

		fmt.Println("1. Today's forecast (use current location)")
		fmt.Println("2. Advanced options")
		fmt.Print("0. Exit\n\n")

		reader := bufio.NewReader(os.Stdin)
		input, err := reader.ReadString('\n')
		if err != nil {
			log.Fatal(err)
		}

		option = strings.TrimSuffix(input, "\n")

		if option == "1" {
			fmt.Println("Option 1 selected...")
		} else if option == "2" {
			wg.Add(1)
			go advancedMenu(&wg)
			wg.Wait()
		} else if option == "0" {
			return
		} else {
			fmt.Print("\nOops! An error occurred, please choose a valid option.\n\n")
		}

	}

}