## Multiverse OS: CLI Loading bars & spinners library **URL** [multiverse-os.org](https://multiverse-os.org) A simple and easy-to-use loading `bar` and `spinner` library, a subcomponent of the Multiverse OS `cli` library. Extendable, feature complete and can be initialized, configred, and started in a single line and stopped in a second.

Getting started

Keep in mind, that you do not need to initialize new spinner objects, you can reuse the object, change the loading message and call start again.

Loading Bars

The following example is included with the library to demonstrate one way to use the loading bars:

package main

import (
	"fmt"
	"math/rand"
	"time"

	progressbar "github.com/multiverse-os/cli/text/loaders/bar"
)

const TASK_SIZE = 100
const BAR_WIDTH = 60
const WORKER_NUM = 2

func main() {
	fmt.Println("Loading Bar Example")
	fmt.Println("===================")
	fmt.Println("Simple example with one bar")

	progressBar, err := bar.New(100)
	if err != nil {
		fmt.Println("[error] failed to create progress bar:", err)
	}

	progressBar.Show()
	for i := 0; i < 100; i++ {
		time.Sleep(time.Duration(rand.Intn(50)+15) * time.Millisecond)
		progressBar.Increment(1)
	}
	progressBar.Close()
}

Loading Spinners

A simple and easy-to-use spinner library, a subcomponent of the Multiverse OS cli library. Designed to be easily extensible, feature complete and easily initialized, configred, and started from a single line of code.

Getting started

Keep in mind, that you do not need to initialize new spinner objects, you can reuse the object, change the loading message and call start again.

This example is included in the /examples/ folder of the repository.

package main

import (
	"fmt"
	"math/rand"
	"time"

	"github.com/multiverse-os/cli/spinner"
	"github.com/multiverse-os/cli/spinner/clock"
	"github.com/multiverse-os/cli/spinner/dots"
	"github.com/multiverse-os/cli/text"
)

var Rainbow = []string{text.LIGHT_RED, text.RED, text.LIGHT_RED,
	text.LIGHT_YELLOW, text.YELLOW, text.LIGHT_YELLOW, text.LIGHT_GREEN,
	text.GREEN, text.LIGHT_GREEN, text.LIGHT_CYAN, text.CYAN, text.LIGHT_CYAN,
	text.LIGHT_BLUE, text.BLUE, text.LIGHT_BLUE, text.LIGHT_MAGENTA,
	text.MAGENTA, text.LIGHT_MAGENTA}

var Blues = []string{text.LIGHT_BLUE, text.LIGHT_BLUE, text.BLUE, text.BLUE,
	text.BLUE, text.BLUE, text.BLUE, text.BLUE, text.BLUE, text.LIGHT_BLUE,
	text.LIGHT_BLUE, text.LIGHT_BLUE, text.WHITE, text.WHITE, text.LIGHT_CYAN,
	text.LIGHT_CYAN, text.LIGHT_CYAN, text.CYAN, text.LIGHT_CYAN,
	text.LIGHT_CYAN, text.LIGHT_CYAN}

func randomWait() {
	time.Sleep(time.Duration(rand.Intn(2)+2) * time.Second)
}

func main() {
	fmt.Println("Loader Example")
	fmt.Println("==============")
	RainbowSpinner()
	//MultiMessageSpinner()
}

// Options are defined using function chaining, and the available options
// are:
//   1) Speed(int), with aliases spinner.(Slowest,Slow,Normal,Fast,Fastest)
//   2) Messasge(string)
//   3) Palette([]string), expecting ansi colors to cycle through

func RainbowSpinner() {
	rainbowDots := spinner.New(dots.Animation).Message("Loading...").Speed(spinner.Normal).Palette(Rainbow).Start()
	randomWait()
	rainbowDots.Complete(text.Green("Loading Complete!"))
}

func MultiMessageSpinner() {
	s := spinner.New(clock.Animation).Message("Loading...").Speed(spinner.Normal)
	s.Start()
	randomWait()
	randomWait()

	// Currently there are only six (6) available spinner options
	// any pull requests for additional spinners will be reviewed
	// and accepted if the code is consistent with the existing
	// library codebase. Pull requests welcome.
	// Loader Animation Options:
	//    (1) circle.Animation   ["◐","◓", "◑", "◒"]
	//    (2) clock.Animation    ["🕐","🕑","🕒","🕓",...]
	//    (3) dots.Animation     ["⠋","⠙","⠹","⠸",...]
	//    (4) lines.Animation    ["-","\","|","/"]
	//    (5) moon.Animation     ["🌑","🌒","🌓","🌔",...]
	//    (6) triangle.Animation ["◢","◣","◤","◥"]

	// To provide a more interactive UI, messages, speed and even palette can
	// be updated while the spinner animation is active to provide updates
	// which lets the user know the program is not frozen.
	s.Message("Water, Dirt & Grass")
	randomWait()
	s.Message("Trees, Debris & Hideouts")
	randomWait()
	s.Message("Wildlife, Werewolves & Bandits")
	randomWait()
	s.Message("Sounds of wildlife & trees waving in the wind")
	randomWait()
	s.Message("Hiding treasure in the haunted woods...")
	randomWait()
	s.Complete("Completed")

}