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[Terminal/Huh] Build Terminal Form By golang.

Posted on January 8, 2025January 8, 2025 By nim No Comments on [Terminal/Huh] Build Terminal Form By golang.

Ở một post trước mình đã hướng dẫn các bạn bạn build cli hoặc giống như là kubeclt:

[Golang] Create Your Own CLI — With Golang

Ở lần này chúng ta sẽ nâng cấp hơn lên tầm cao mới.
Build 1 terminal UI bằng golang.

https://github.com/charmbracelet/huh

Nó là thư viện đơn giản và mạnh mẽ cho việc xây dựng form và prompts tương tác trong terminal.
Bạn có thể nhìn ảnh bên dưới để dễ tưởng tượng:

Bên dưới này là 1 ví dụ:

package main

import (
	"log"
	"strconv"
	"strings"

	"github.com/charmbracelet/huh"
)

func main() {
	var name string
	var ageStr string // Temporary string variable for input
	var age int       // Final integer variable
	var gender string // Variable to store gender

	// Create initial form for name and age
	form := huh.NewForm(
		huh.NewGroup(
			huh.NewInput().
				Title("What is your name?").
				Value(&name),
			huh.NewInput().
				Title("What is your age?").
				Value(&ageStr), // Store the age as a string
		),
	)

	// Run the form
	if err := form.Run(); err != nil {
		log.Fatal(err)
	}

	// Convert age from string to int
	age, err := strconv.Atoi(ageStr)
	if err != nil {
		log.Fatalf("Invalid age input: %s", err)
	}

	// Check age and ask for gender if age > 7
	if age > 7 {
		for {
			genderForm := huh.NewForm(
				huh.NewGroup(
					huh.NewInput().
						Title("Are you male or female? (Type 'male' or 'female')").
						Value(&gender),
				),
			)

			// Run the gender form
			if err := genderForm.Run(); err != nil {
				log.Fatal(err)
			}

			// Normalize input (case insensitive)
			gender = strings.ToLower(strings.TrimSpace(gender))

			// Validate input
			if gender == "male" || gender == "female" {
				break // Valid input, exit the loop
			} else {
				log.Println("Invalid input. Please enter 'male' or 'female'.")
			}
		}

		log.Printf("Name: %s, Age: %d, Gender: %s", name, age, gender)
	} else {
		log.Printf("Name: %s, Age: %d", name, age)
	}
}

Lúc này bạn có thể build ra run thử kết quả:

Mình thực hiện nhập nếu age > 8 nó hiện lên 1 form khác,

Golang

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