feat(api): create template

Add template table to the database
Create controller function to check if user has template, and create it
in the database
Made universal jwt.Claims of user data retrieval function

backend/utils/jwt/jwt.go

@@ -6,9 +6,16 @@ import (
 	"fmt"
 	"time"
 
+	"github.com/gin-gonic/gin"
 	"github.com/golang-jwt/jwt"
 )
 
+type UserClaims struct {
+	Id    float64 `json:"id"`
+	Name  string  `json:"name"`
+	Email string  `json:"email"`
+}
+
 func GenerateJWT(u *user.User) (string, error) {
 	// Generate JWT token
 	mySigningKey := []byte(config.Env["JWT_SECRET"])
@@ -53,3 +60,23 @@ func ParseJWT(tokenString string) (jwt.MapClaims, error) {
 	// Return on invalid token
 	return nil, fmt.Errorf("invalid token")
 }
+
+func GetUser(c *gin.Context) (UserClaims, error) {
+	// Get user from context
+	user, ok := c.Get("user")
+	if !ok {
+		return UserClaims{}, fmt.Errorf("no user in middleware context")
+	}
+
+	// Get claims from user
+	mapClaims, ok := user.(jwt.MapClaims)
+	if !ok {
+		return UserClaims{}, fmt.Errorf("invalid token claims")
+	}
+
+	return UserClaims{
+		Id:    mapClaims["id"].(float64),
+		Name:  mapClaims["name"].(string),
+		Email: mapClaims["email"].(string),
+	}, nil
+}

backend/utils/responses/responses.go

@@ -6,7 +6,7 @@ import (
 	"github.com/gin-gonic/gin"
 )
 
-func Success(c *gin.Context, data gin.H) {
+func Success(c *gin.Context, data any) {
 	// Return success to api
 	c.JSON(200, gin.H{
 		"success": true,