Facebook access token 검증

oidc is not supported.

Go :

import "github.com/go-resty/resty/v2"

type FacebookTokenResp struct {
	Data struct {
		AppId               string `json:"app_id"`
		Type                string `json:"type"`
		Application         string `json:"application"`
		DataAccessExpiresAt int64  `json:"data_access_expires_at"`
		ExpiresAt           int64  `json:"expires_at"`
		IsValid             bool   `json:"is_valid"`
		IssuedAt            int64  `json:"issued_at"`
		UserId              string `json:"user_id"`
		MetaData            struct {
			AuthType string `json:"auth_type"`
			Sso      string `json:"sso"`
		} `json:"metadata"`
		Scopes []string `json:"scopes"`
	} `json:"data"`
}

func verifyFacebookAccessToken(token string) bool {
	clientId := ""
	clientSecret := ""
	appAccessToken := clientId + "|" + clientSecret

	client := resty.New()
	resp, err := client.R().
		SetHeader("Accept", "application/json").
		Get(fmt.Sprintf("https://graph.facebook.com/debug_token?input_token=%s&access_token=%s",
			token,
			appAccessToken))

	if err != nil {
		logging.Error("facebook: %s", err)
		return false
	}

	facebookTokenResp := FacebookTokenResp{}
	if err := json.Unmarshal(resp.Body(), &facebookTokenResp); err != nil {
		logging.Error("json Unmarshal: %s", err)
		return false
	}

	if !facebookTokenResp.Data.IsValid {
		logging.Error("facebook isValid false")
		return false
	}

	return true
}