package handler

import (
	"errors"
	"net/http"
	"spend-sparrow/internal/db"
	"spend-sparrow/internal/service"
	"spend-sparrow/internal/utils"
	"strings"

	"go.opentelemetry.io/otel/attribute"
	"go.opentelemetry.io/otel/trace"
)

func handleError(w http.ResponseWriter, r *http.Request, err error) {
	switch {
	case errors.Is(err, service.ErrUnauthorized):
		utils.TriggerToastWithStatus(w, r, "error", "You are not autorized to perform this operation.", http.StatusUnauthorized)
		return
	case errors.Is(err, service.ErrBadRequest):
		utils.TriggerToastWithStatus(w, r, "error", extractErrorMessage(err), http.StatusBadRequest)
		return
	case errors.Is(err, db.ErrNotFound):
		utils.TriggerToastWithStatus(w, r, "error", extractErrorMessage(err), http.StatusNotFound)
		return
	}

	utils.TriggerToastWithStatus(w, r, "error", "Internal Server Error", http.StatusInternalServerError)
}

func extractErrorMessage(err error) string {
	errMsg := err.Error()
	if errMsg == "" {
		return ""
	}

	return strings.SplitN(errMsg, ":", 2)[0]
}

func updateSpan(r *http.Request) {
	currentSpan := trace.SpanFromContext(r.Context())
	if currentSpan != nil {
		currentSpan.SetAttributes(attribute.String("http.pattern", r.Pattern))
		currentSpan.SetAttributes(attribute.String("http.pattern.id", r.PathValue("id")))
	}
}