Separate second-factor verification and delivery from auth (#40)

backend/product/twofactor/model/model.go

@@ -0,0 +1,83 @@
+package model
+
+import (
+	verification "git.sendico.io/tech/sxchnge/product/verification/model"
+	storable "git.sendico.io/tech/sxchnge/shared/database/record"
+	"go.mongodb.org/mongo-driver/v2/bson"
+	"time"
+)
+
+type Channel string
+
+const Email Channel = "email"
+
+// Scope is supplied by the owning operation, never accepted as an authorization
+// decision from a caller's HTTP body. ContextRef identifies the exact operation.
+type Scope struct {
+	Purpose    verification.VerificationPurpose `bson:"purpose"`
+	ContextRef string                           `bson:"contextRef"`
+}
+type Request struct {
+	Subject        bson.ObjectID
+	Scope          Scope
+	Deadline       time.Time
+	IdempotencyKey string
+	IP             string
+}
+type Factor struct {
+	ID       string  `bson:"id"`
+	Channel  Channel `bson:"channel"`
+	Address  string  `bson:"address"`
+	Verified bool    `bson:"verified"`
+}
+type Profile struct {
+	storable.Base `bson:",inline"`
+	Preferred     string   `bson:"preferred"`
+	Factors       []Factor `bson:"factors"`
+	Revision      string   `bson:"revision"`
+	Fence         string   `bson:"fence"`
+}
+
+func (*Profile) Collection() string { return "two_factor_profiles" }
+
+type Record struct {
+	storable.Base  `bson:",inline"`
+	Subject        bson.ObjectID `bson:"subject"`
+	Scope          Scope         `bson:"scope"`
+	Factor         Factor        `bson:"factor"`
+	ProfileVersion string        `bson:"profileVersion"`
+	Locale         string        `bson:"locale"`
+	ExpiresAt      time.Time     `bson:"expiresAt"`
+	VerifiedAt     *time.Time    `bson:"verifiedAt,omitempty"`
+}
+
+func (*Record) Collection() string { return "two_factor_challenges" }
+
+type Challenge struct {
+	ID                  string
+	Channel             Channel
+	Target              string
+	ExpiresAt, ResendAt time.Time
+}
+type Proof struct {
+	Token     string
+	ExpiresAt time.Time
+}
+type Delivery struct {
+	Key          string
+	Subject      bson.ObjectID
+	Scope        Scope
+	Factor       Factor
+	Locale, Code string
+	ExpiresAt    time.Time
+}
+type Choice struct {
+	ID      string
+	Channel Channel
+	Target  string
+}
+type Settings struct {
+	Required  bool
+	Preferred string
+	Factors   []Choice
+}