feat: add mongodb support (#82)

* feat: add mongodb enum

* fix: isMongodb var condition

* feat: add init mongodb connection

* feat: add mongodb operations for various db methods

* fix: error message

server/db/db.go

@@ -6,6 +6,7 @@ import (
 	arangoDriver "github.com/arangodb/go-driver"
 	"github.com/authorizerdev/authorizer/server/constants"
 	"github.com/authorizerdev/authorizer/server/enum"
+	"go.mongodb.org/mongo-driver/mongo"
 	"gorm.io/driver/mysql"
 	"gorm.io/driver/postgres"
 	"gorm.io/driver/sqlite"
@@ -32,6 +33,7 @@ type Manager interface {
 type manager struct {
 	sqlDB    *gorm.DB
 	arangodb arangoDriver.Database
+	mongodb  *mongo.Database
 }
 
 // mainly used by nosql dbs
@@ -42,11 +44,12 @@ type CollectionList struct {
 }
 
 var (
-	IsSQL       bool
-	IsArangoDB  bool
-	Mgr         Manager
-	Prefix      = "authorizer_"
-	Collections = CollectionList{
+	IsORMSupported bool
+	IsArangoDB     bool
+	IsMongoDB      bool
+	Mgr            Manager
+	Prefix         = "authorizer_"
+	Collections    = CollectionList{
 		User:                Prefix + "users",
 		VerificationRequest: Prefix + "verification_requests",
 		Session:             Prefix + "sessions",
@@ -57,8 +60,9 @@ func InitDB() {
 	var sqlDB *gorm.DB
 	var err error
 
-	IsSQL = constants.DATABASE_TYPE != enum.Arangodb.String()
+	IsORMSupported = constants.DATABASE_TYPE != enum.Arangodb.String() && constants.DATABASE_TYPE != enum.Mongodb.String()
 	IsArangoDB = constants.DATABASE_TYPE == enum.Arangodb.String()
+	IsMongoDB = constants.DATABASE_TYPE == enum.Mongodb.String()
 
 	// sql db orm config
 	ormConfig := &gorm.Config{
@@ -85,19 +89,31 @@ func InitDB() {
 	case enum.Arangodb.String():
 		arangodb, err := initArangodb()
 		if err != nil {
-			log.Fatal("error initing arangodb:", err)
+			log.Fatal("error initializing arangodb:", err)
 		}
 
 		Mgr = &manager{
 			sqlDB:    nil,
+			mongodb:  nil,
 			arangodb: arangodb,
 		}
 
 		break
+	case enum.Mongodb.String():
+		mongodb, err := initMongodb()
+		if err != nil {
+			log.Fatal("error initializing mongodb connection:", err)
+		}
+
+		Mgr = &manager{
+			sqlDB:    nil,
+			arangodb: nil,
+			mongodb:  mongodb,
+		}
 	}
 
-	// common for all sql dbs that are configured via gorm
-	if IsSQL {
+	// common for all sql dbs that are configured via go-orm
+	if IsORMSupported {
 		if err != nil {
 			log.Fatal("Failed to init sqlDB:", err)
 		} else {
@@ -106,6 +122,7 @@ func InitDB() {
 		Mgr = &manager{
 			sqlDB:    sqlDB,
 			arangodb: nil,
+			mongodb:  nil,
 		}
 	}
 }