evcc-io/plugin/auth/demo.go

112 lines
2.3 KiB
Go

package auth
import (
"context"
"fmt"
"net/url"
"time"
"github.com/evcc-io/evcc/api"
"github.com/evcc-io/evcc/server/providerauth"
"github.com/evcc-io/evcc/util"
"golang.org/x/oauth2"
)
func init() {
registry.AddCtx("demo", NewDemoFromConfig)
}
type demo struct {
token *oauth2.Token
region string
method string
}
var demoInstance *demo
func NewDemoFromConfig(_ context.Context, other map[string]any) (oauth2.TokenSource, error) {
var cc struct {
Region string
Method string
}
if err := util.DecodeOther(other, &cc); err != nil {
return nil, err
}
return NewDemo(cc.Region, cc.Method)
}
func NewDemo(region string, method string) (oauth2.TokenSource, error) {
// reuse instance (similar to oauth.go getInstance pattern)
if demoInstance != nil {
// update existing instance with new values
demoInstance.region = region
demoInstance.method = method
return demoInstance, nil
}
demoInstance = &demo{
region: region,
method: method,
}
if _, err := providerauth.Register("demo", demoInstance); err != nil {
return nil, err
}
return demoInstance, nil
}
func (o *demo) Token() (*oauth2.Token, error) {
if o.token == nil {
return nil, api.LoginRequiredError("demo")
}
return o.token, nil
}
func (o *demo) Login(_ string) (string, *oauth2.DeviceAuthResponse, error) {
// Simulate error for ERROR region
if o.region == "ERROR" {
return "", nil, fmt.Errorf("region not supported")
}
// For demo, immediately authenticate without requiring external flow
o.token = &oauth2.Token{
AccessToken: "demo-token",
Expiry: time.Now().Add(24 * time.Hour),
}
// TODO use network settings after https://github.com/evcc-io/evcc/pull/25141
uri := "http://localhost:7070/providerauth/callback"
if o.method == "device-code" {
// Device code flow: URI comes from DeviceAuthResponse
return "", &oauth2.DeviceAuthResponse{
UserCode: "12AB345",
VerificationURI: uri,
Expiry: time.Now().Add(10 * time.Minute),
}, nil
}
// Redirect flow: URI in first return value
return uri, nil, nil
}
func (o *demo) Logout() error {
o.token = nil
return nil
}
func (o *demo) HandleCallback(params url.Values) error {
// no-op: token already set in Login()
return nil
}
func (o *demo) Authenticated() bool {
return o.token != nil
}
func (o *demo) DisplayName() string {
return "demo"
}