feat: update docs, fix repository, full working github callback, fix healthcheck in docker file, update makefile

backend/internal/handlers/auth_handlers.go

@@ -49,7 +49,7 @@ func NewAuthHandlers(repo repositories.AuthRepository) *AuthHandlers {
 // @Description Redirects to GitHub authorization
 // @Tags auth
 // @Success 302
-// @Router /api/v1/auth/github [get]
+// @Router /auth/github [get]
 func (h *AuthHandlers) LoginGithub(c *gin.Context) {
 	url := h.config.AuthCodeURL("state", oauth2.AccessTypeOnline)
 	h.logger.Info("Redirect to GitHub: " + url)
@@ -117,7 +117,20 @@ func (h *AuthHandlers) CallbackGithub(c *gin.Context) {
 			c.JSON(500, gin.H{"error": "registration failed", "details": err.Error()})
 			return
 		}
+	} else {
+		h.logger.Info("Existing user, fetching data: " + ghUser.GithubLogin)
+		user, err := h.repo.GetUserByGithubID(c.Request.Context(), ghUser.GithubID)
+		if err != nil {
+			h.logger.Error("Failed to fetch user: " + err.Error())
+			c.JSON(500, gin.H{"error": "failed to fetch user", "details": err.Error()})
+			return
+		}
+		id = user.ID
+		ghUser.GithubLogin = user.GithubLogin
+		ghUser.Email = user.Email
+		ghUser.AvatarURL = user.AvatarURL
 	}
+
 	user := storage.User{
 		ID:          id,
 		GithubID:    ghUser.GithubID,