New code verification service

api/pkg/db/internal/mongo/confirmationdb/db.go

@@ -0,0 +1,67 @@
+package confirmationdb
+
+import (
+	"github.com/tech/sendico/pkg/db/confirmation"
+	ri "github.com/tech/sendico/pkg/db/repository/index"
+	"github.com/tech/sendico/pkg/db/template"
+	"github.com/tech/sendico/pkg/mlogger"
+	"github.com/tech/sendico/pkg/model"
+	"github.com/tech/sendico/pkg/mservice"
+	"go.mongodb.org/mongo-driver/mongo"
+	"go.uber.org/zap"
+)
+
+const (
+	fieldAccountRef  = "accountRef"
+	fieldDestination = "destination"
+	fieldTarget      = "target"
+	fieldExpiresAt   = "expiresAt"
+	fieldUsed        = "used"
+)
+
+type ConfirmationDB struct {
+	template.DBImp[*model.ConfirmationCode]
+}
+
+func Create(logger mlogger.Logger, db *mongo.Database) (confirmation.DB, error) {
+	p := &ConfirmationDB{
+		DBImp: *template.Create[*model.ConfirmationCode](logger, mservice.Confirmations, db),
+	}
+
+	// Ensure one active code per account/destination/target.
+	if err := p.Repository.CreateIndex(&ri.Definition{
+		Keys: []ri.Key{
+			{Field: fieldAccountRef, Sort: ri.Asc},
+			{Field: fieldDestination, Sort: ri.Asc},
+			{Field: fieldTarget, Sort: ri.Asc},
+		},
+		Unique: true,
+	}); err != nil {
+		p.Logger.Error("Failed to create confirmation unique index", zap.Error(err))
+		return nil, err
+	}
+
+	// TTL on expiry.
+	ttl := int32(0)
+	if err := p.Repository.CreateIndex(&ri.Definition{
+		Keys: []ri.Key{
+			{Field: fieldExpiresAt, Sort: ri.Asc},
+		},
+		TTL: &ttl,
+	}); err != nil {
+		p.Logger.Error("Failed to create confirmation TTL index", zap.Error(err))
+		return nil, err
+	}
+
+	// Query helper indexes.
+	if err := p.Repository.CreateIndex(&ri.Definition{
+		Keys: []ri.Key{
+			{Field: fieldUsed, Sort: ri.Asc},
+		},
+	}); err != nil {
+		p.Logger.Error("Failed to create confirmation used index", zap.Error(err))
+		return nil, err
+	}
+
+	return p, nil
+}