74 lines
1.3 KiB
Go
74 lines
1.3 KiB
Go
package handlers
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import (
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"encoding/json"
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"errors"
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"io"
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"strings"
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"github.com/gin-gonic/gin"
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)
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func RespondError(c *gin.Context, status int, fallback string, err error) {
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if err != nil {
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_ = c.Error(err)
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}
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c.JSON(status, gin.H{"error": clientFacingErrorMessage(status, fallback, err)})
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}
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func clientFacingErrorMessage(status int, fallback string, err error) string {
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if err == nil {
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return fallback
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}
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if status >= 500 {
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return fallback
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}
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if isRequestDecodeError(err) {
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return fallback
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}
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message := strings.TrimSpace(err.Error())
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if message == "" {
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return fallback
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}
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if looksTechnicalError(message) {
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return fallback
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}
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return message
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}
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func isRequestDecodeError(err error) bool {
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var syntaxErr *json.SyntaxError
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if errors.As(err, &syntaxErr) {
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return true
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}
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var unmarshalTypeErr *json.UnmarshalTypeError
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if errors.As(err, &unmarshalTypeErr) {
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return true
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}
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return errors.Is(err, io.ErrUnexpectedEOF) || errors.Is(err, io.EOF)
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}
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func looksTechnicalError(message string) bool {
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lower := strings.ToLower(strings.TrimSpace(message))
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needles := []string{
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"sql",
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"gorm",
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"driver",
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"constraint",
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"syntax error",
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"unexpected eof",
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"record not found",
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"no such table",
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"stack trace",
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}
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for _, needle := range needles {
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if strings.Contains(lower, needle) {
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return true
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}
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}
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return false
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}
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