package util

import (
	"errors"

	"github.com/evcc-io/evcc/api"
	"go.yaml.in/yaml/v4"
)

// ErrorAsJson returns an error as json-formattable struct
func ErrorAsJson(err error) any {
	res := struct {
		Error         string `json:"error"`
		Line          int    `json:"line,omitempty"`
		LoginRequired string `json:"loginRequired,omitempty"`
		URI           string `json:"uri,omitempty"`
	}{
		Error: err.Error(),
		Line:  yamlErrorLine(err),
	}

	if ae, ok := errors.AsType[*api.ErrLoginRequired](err); ok {
		res.LoginRequired = ae.ProviderAuth
	}

	if ue, ok := errors.AsType[*api.ErrUrl](err); ok {
		res.URI = ue.URL().String()
	}

	return res
}

func yamlErrorLine(err error) int {
	if err, ok := errors.AsType[*yaml.LoadError](err); ok {
		return err.Mark.Line
	}
	return 0
}