ory-am/hydra

// Copyright © 2022 Ory Corp
// SPDX-License-Identifier: Apache-2.0

package cli

import (
    "bytes"
    "encoding/json"
)

func FormatSwaggerError(err error) string {
    if err == nil {
        return ""
    }

    var b bytes.Buffer
    if err := json.NewEncoder(&b).Encode(err); err != nil {
        panic(err)
    }

    var e struct {
        Payload json.RawMessage
    }
    if err := json.NewDecoder(&b).Decode(&e); err != nil {
        panic(err)
    }

    if len(e.Payload) == 0 {
        return err.Error()
    }

    dec := json.NewEncoder(&b)
    dec.SetIndent("", "  ")
    if err := dec.Encode(e.Payload); err != nil {
        panic(err)
    }

    return b.String()
}