change user type from int to uuid string

api/message.go

@@ -4,7 +4,6 @@ import (
 	"context"
 	"encoding/json"
 	"net/http"
-	"strconv"
 
 	"github.com/go-chi/chi/v5"
 	"github.com/go-chi/render"
@@ -110,15 +109,14 @@ func newMessageID() string {
 }
 
 func NewMessage(w http.ResponseWriter, r *http.Request) {
-	err := r.ParseMultipartForm(32 << 20)
+	err := r.ParseMultipartForm(64 << 10)
 	if err != nil {
 		http.Error(w, "Unable to parse form", http.StatusBadRequest)
 		return
 	}
 
-	userIDStr := r.FormValue("user_id")
-	userID, err := strconv.ParseInt(userIDStr, 10, 64)
-	if err != nil {
+	userID := r.FormValue("user_id")
+	if userID == "" {
 		http.Error(w, "Invalid user ID", http.StatusBadRequest)
 		return
 	}
@@ -150,7 +148,7 @@ type messageKey struct{}
 
 type Message struct {
 	ID        string    `json:"id"`
-	UserID    int64     `json:"user_id"`
+	UserID    string    `json:"user_id"`
 	Body      string    `json:"body"`
 	Timestamp time.Time `json:"timestamp"`
 	Edited    time.Time `json:"edited"`
@@ -175,7 +173,7 @@ type MessageResponse struct {
 func (m MessageResponse) MarshalJSON() ([]byte, error) {
 	type OrderedMessageResponse struct {
 		ID        string       `json:"id"`
-		UserID    int64        `json:"user_id"`
+		UserID    string       `json:"user_id"`
 		Body      string       `json:"body"`
 		Timestamp string       `json:"timestamp"`
 		Edited    *string      `json:"edited,omitempty"` // Use a pointer to allow null values