Bootstrap copied BFF and local accounts with public Sendico contracts (#34)

backend/edge/shared/storage/mongo/dependencies.go

@@ -0,0 +1,50 @@
+package mongo
+
+import (
+	"git.sendico.io/tech/sxchnge/bff/pkg/auth"
+	"git.sendico.io/tech/sxchnge/bff/pkg/db"
+	"git.sendico.io/tech/sxchnge/bff/pkg/db/policy"
+	"git.sendico.io/tech/sxchnge/bff/pkg/db/transaction"
+	"git.sendico.io/tech/sxchnge/bff/pkg/merrors"
+	"go.mongodb.org/mongo-driver/v2/mongo"
+)
+
+// Dependencies resolves shared DB/auth/transaction primitives for edge-local store wiring only.
+type Dependencies struct {
+	Database     *mongo.Database
+	Enforcer     auth.Enforcer
+	Policies     policy.DB
+	Transactions transaction.Factory
+}
+
+type DatabaseProvider interface {
+	MongoDatabase() *mongo.Database
+}
+
+func ResolveDependencies(dbf db.Factory) (*Dependencies, error) {
+	if dbf == nil {
+		return nil, merrors.InvalidArgument("database factory is required", "dbFactory")
+	}
+
+	provider, ok := dbf.(DatabaseProvider)
+	if !ok || provider.MongoDatabase() == nil {
+		return nil, merrors.Internal("mongo database provider is not available for edge-local storage wiring")
+	}
+
+	permissions := dbf.Permissions()
+	if permissions == nil || permissions.Enforcer() == nil {
+		return nil, merrors.Internal("permissions provider is not available for edge-local storage wiring")
+	}
+
+	pdb, err := dbf.NewPoliciesDB()
+	if err != nil {
+		return nil, err
+	}
+
+	return &Dependencies{
+		Database:     provider.MongoDatabase(),
+		Enforcer:     permissions.Enforcer(),
+		Policies:     pdb,
+		Transactions: dbf.TransactionFactory(),
+	}, nil
+}