Go-JWT-Tests/controllers/usersController.go

package controllers

import (
	"net/http"
	"os"
	"time"

	"gitea.voser.cloud/janic/Go-JWT-Tests/initializers"
	"gitea.voser.cloud/janic/Go-JWT-Tests/models"
	"github.com/gin-gonic/gin"
	"github.com/golang-jwt/jwt/v5"
	"golang.org/x/crypto/bcrypt"
)

func Signup(c *gin.Context) {
	// Get the email/pass
	var body struct {
		Email    string
		Password string
	}

	if c.Bind(&body) != nil {
		c.JSON(http.StatusBadRequest, gin.H{
			"error": "Failed to read body",
		})

		return
	}

	// Hash Password
	hash, err := bcrypt.GenerateFromPassword([]byte(body.Password), 10)

	if err != nil {
		c.JSON(http.StatusBadRequest, gin.H{
			"error": "Failed to hash password",
		})

		return
	}

	// Create the user
	user := models.User{Email: body.Email, Password: string(hash)}
	result := initializers.DB.Create(&user)

	if result.Error != nil {
		c.JSON(http.StatusBadRequest, gin.H{
			"error": "Failed to create user",
		})

		return
	}

	// respond
	c.JSON(http.StatusOK, gin.H{})
}

func Login(c *gin.Context) {

	// Get the email and pass of body
	var body struct {
		Email    string
		Password string
	}

	if c.Bind(&body) != nil {
		c.JSON(http.StatusBadRequest, gin.H{
			"error": "Failed to read body",
		})

		return
	}

	// Lookup requested user
	var user models.User

	initializers.DB.First(&user, "email = ?", body.Email)

	if user.ID == 0 {
		c.JSON(http.StatusBadRequest, gin.H{
			"error": "Invalid Email or Password",
		})

		return
	}

	// Compare sent in pass with saved user pass hash
	err := bcrypt.CompareHashAndPassword([]byte(user.Password), []byte(body.Password))

	if err != nil {
		c.JSON(http.StatusBadRequest, gin.H{
			"error": "Invalid Email or Password",
		})

		return
	}
	// Generate a jwt token
	// Create a new token object, specifying signing method and the claims
	// you would like it to contain.

	token := jwt.NewWithClaims(jwt.SigningMethodHS256, jwt.MapClaims{
		"sub": user.ID,
		"nbf": time.Date(2015, 10, 10, 12, 0, 0, 0, time.UTC).Unix(),
		"exp": time.Now().Add(time.Hour * 24 * 30).Unix(),
	})

	// Sign and get the complete encoded token as a string using the secret
	tokenString, err := token.SignedString([]byte(os.Getenv("SECRET")))

	if err != nil {
		c.JSON(http.StatusBadRequest, gin.H{
			"error": "Failed to create Token",
		})

		return
	}

	// Return token
	c.SetSameSite(http.SameSiteLaxMode)
	c.SetCookie("Authorization", tokenString, 3600*24*30, "", "", false, true)
	c.JSON(http.StatusOK, gin.H{})
}

func Validate(c *gin.Context) {
	c.JSON(http.StatusOK, gin.H{
		"message": "I'm Logged in",
	})
}