weather-cli/cmd/advanced.go

package main

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

func advancedMenu(app *application) {

	var option string

	// Menu loop
	for option != "0" {

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

		fmt.Printf("1. Change units (Default: imperial; Current: %s)\n", app.Config.Units)
		fmt.Println("2. Enter precise location")
		fmt.Print("0. Back\n\n")

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

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

		// Check user input
		if option == "1" {
			current := app.Config.Units
			if current == "imperial" {
				app.Config.Units = "metric"
			} else {
				app.Config.Units = "imperial"
			}
			fmt.Printf("\nChanged units from %s to %s...\n\n", current, app.Config.Units)
		} else if option == "2" {

			// Loop to validate location entered
			var validLoc bool
			for !validLoc {
				getPreciseLocation(app)
				getCurrent(app)

				if app.Forecast.Main.Temp != 0.00 {
					validLoc = true
				} else {
					fmt.Println("I couldn't get any information for that location.")
					fmt.Println("Are you sure the coordinates are valid?")
				}
			}

			printWeather(app)
			app.Forecast.Main.Temp = 0.00
		}
	}
}