refactor auth pkg into libraries

auth/jwt.go

@@ -1,112 +0,0 @@
-package auth
-
-import (
-	"net/http"
-	"time"
-
-	"github.com/go-chi/jwtauth"
-	"github.com/spf13/viper"
-)
-
-// AppClaims represent the claims extracted from JWT token.
-type AppClaims struct {
-	ID    int
-	Sub   string
-	Roles []string
-}
-
-// TokenAuth implements JWT authentication flow.
-type TokenAuth struct {
-	JwtAuth          *jwtauth.JwtAuth
-	jwtExpiry        time.Duration
-	jwtRefreshExpiry time.Duration
-}
-
-// NewTokenAuth configures and returns a JWT authentication instance.
-func NewTokenAuth() (*TokenAuth, error) {
-	secret := viper.GetString("auth_jwt_secret")
-	if secret == "random" {
-		secret = randStringBytes(32)
-	}
-
-	a := &TokenAuth{
-		JwtAuth:          jwtauth.New("HS256", []byte(secret), nil),
-		jwtExpiry:        viper.GetDuration("auth_jwt_expiry"),
-		jwtRefreshExpiry: viper.GetDuration("auth_jwt_refresh_expiry"),
-	}
-
-	return a, nil
-}
-
-// Verifier http middleware will verify a jwt string from a http request.
-func (a *TokenAuth) Verifier() func(http.Handler) http.Handler {
-	return jwtauth.Verifier(a.JwtAuth)
-}
-
-// GenTokenPair returns both an access token and a refresh token.
-func (a *TokenAuth) GenTokenPair(ca jwtauth.Claims, cr jwtauth.Claims) (string, string, error) {
-	access, err := a.CreateJWT(ca)
-	if err != nil {
-		return "", "", err
-	}
-	refresh, err := a.CreateRefreshJWT(cr)
-	if err != nil {
-		return "", "", err
-	}
-	return access, refresh, nil
-}
-
-// CreateJWT returns an access token for provided account claims.
-func (a *TokenAuth) CreateJWT(c jwtauth.Claims) (string, error) {
-	c.SetIssuedNow()
-	c.SetExpiryIn(a.jwtExpiry)
-	_, tokenString, err := a.JwtAuth.Encode(c)
-	return tokenString, err
-}
-
-// CreateRefreshJWT returns a refresh token for provided token Claims.
-func (a *TokenAuth) CreateRefreshJWT(c jwtauth.Claims) (string, error) {
-	c.SetIssuedNow()
-	c.SetExpiryIn(a.jwtRefreshExpiry)
-	_, tokenString, err := a.JwtAuth.Encode(c)
-	return tokenString, err
-}
-
-func parseClaims(c jwtauth.Claims) (AppClaims, bool) {
-	var claims AppClaims
-	allOK := true
-	id, ok := c.Get("id")
-	if !ok {
-		allOK = false
-	}
-	claims.ID = int(id.(float64))
-
-	sub, ok := c.Get("sub")
-	if !ok {
-		allOK = false
-	}
-	claims.Sub = sub.(string)
-
-	rl, ok := c.Get("roles")
-	if !ok {
-		allOK = false
-	}
-
-	var roles []string
-	if rl != nil {
-		for _, v := range rl.([]interface{}) {
-			roles = append(roles, v.(string))
-		}
-	}
-	claims.Roles = roles
-
-	return claims, allOK
-}
-
-func parseRefreshClaims(c jwtauth.Claims) (string, bool) {
-	token, ok := c.Get("token")
-	if !ok {
-		return "", false
-	}
-	return token.(string), ok
-}