bogem/vnehm

// Copyright 2016 Albert Nigmatzianov. All rights reserved.
// Use of this source code is governed by a MIT-style
// license that can be found in the LICENSE file.

package ui

import (
    "bufio"
    "fmt"
    "os"
    "strings"
    "time"

    colorable "github.com/mattn/go-colorable"
)

var Output = colorable.NewColorableStdout()

func Error(message string, err error) {
    out := "ERROR: "
    if err == nil {
        out += message
    } else if message == "" {
        out += err.Error()
    } else {
        out += message + ": " + err.Error()
    }
    Println(RedString(out))
}

func Newline() {
    Println("")
}

func Print(s string) {
    fmt.Fprint(Output, s)
}

func Println(s string) {
    Print(s + "\n")
}

func Quit() {
    os.Exit(0)
}

func ReadInput() string {
    reader := bufio.NewReader(os.Stdin)
    input, err := reader.ReadString('\n')
    if err != nil {
        Term("couldn't read the input", err)
    }
    return strings.TrimSpace(input)
}

func Sleep() {
    time.Sleep(2 * time.Second)
}

func Success(s string) {
    Println(GreenString(s))
}

func Term(message string, err error) {
    if message != "" || err != nil {
        Error(message, err)
    }
    os.Exit(1)
}

func Warning(message string) {
    Println(YellowString("WARNING: " + message))
}