Link account id with the external user store (#184)

* get account id from access token claim

* use GetOrCreateAccountByUser and add test

* correct account id claim

* remove unused account

* Idp manager interface

* auth0 idp manager

* use if instead of switch case

* remove unnecessary lock

* NewAuth0Manager

* move idpmanager to its own package

* update metadata when accountId is not supplied

* update tests with idpmanager field

* format

* new idp manager and config support

* validate if we fetch the interface before converting to string

* split getJWTToken

* improve tests

* proper json fields and handle defer body close

* fix ci lint notes

* documentation and proper defer position

* UpdateUserAppMetadata tests

* update documentation

* ManagerCredentials interface

* Marshal and Unmarshal functions

* fix tests

* ManagerHelper and ManagerHTTPClient

* further tests with mocking

* rename package and custom http client

* sync local packages

* remove idp suffix

management/server/idp/idp.go

@@ -0,0 +1,63 @@
+package idp
+
+import (
+	"fmt"
+	"net/http"
+	"strings"
+	"time"
+)
+
+// Manager idp manager interface
+type Manager interface {
+	UpdateUserAppMetadata(userId string, appMetadata AppMetadata) error
+}
+
+// Config an idp configuration struct to be loaded from management server's config file
+type Config struct {
+	ManagerType            string
+	Auth0ClientCredentials Auth0ClientConfig
+}
+
+// ManagerCredentials interface that authenticates using the credential of each type of idp
+type ManagerCredentials interface {
+	Authenticate() (JWTToken, error)
+}
+
+// ManagerHTTPClient http client interface for API calls
+type ManagerHTTPClient interface {
+	Do(req *http.Request) (*http.Response, error)
+}
+
+// ManagerHelper helper
+type ManagerHelper interface {
+	Marshal(v interface{}) ([]byte, error)
+	Unmarshal(data []byte, v interface{}) error
+}
+
+// AppMetadata user app metadata to associate with a profile
+type AppMetadata struct {
+	// Wiretrustee account id to update in the IDP
+	// maps to wt_account_id when json.marshal
+	WTAccountId string `json:"wt_account_id"`
+}
+
+// JWTToken a JWT object that holds information of a token
+type JWTToken struct {
+	AccessToken   string `json:"access_token"`
+	ExpiresIn     int    `json:"expires_in"`
+	expiresInTime time.Time
+	Scope         string `json:"scope"`
+	TokenType     string `json:"token_type"`
+}
+
+// NewManager returns a new idp manager based on the configuration that it receives
+func NewManager(config Config) (Manager, error) {
+	switch strings.ToLower(config.ManagerType) {
+	case "none", "":
+		return nil, nil
+	case "auth0":
+		return NewAuth0Manager(config.Auth0ClientCredentials), nil
+	default:
+		return nil, fmt.Errorf("invalid manager type: %s", config.ManagerType)
+	}
+}