Added new dbconv function for transactions

Author: PythonHacker24

internal/session/dbconv.go

@@ -1,10 +1,14 @@
 package session
 
 import (
+	"encoding/json"
+	"fmt"
+
 	"github.com/google/uuid"
 	"github.com/jackc/pgx/v5/pgtype"
 
 	"github.com/PythonHacker24/linux-acl-management-backend/internal/postgresql"
+	"github.com/PythonHacker24/linux-acl-management-backend/internal/types"
 )
 
 /* converts project session struct into PostgreSQL supported format */
@@ -35,3 +39,50 @@ func ConvertSessionToStoreParams(session *Session) (*postgresql.StoreSessionPQPa
 		Expiry:       expiry,
 	}, nil
 }
+
+/* converts project transaction struct into PostgreSQL supported format */
+func ConvertTransactiontoStoreParams(tx types.Transaction) (postgresql.CreateTransactionPQParams, error) {
+	/* marshal ACL entries to JSON bytes */
+	entriesJSON, err := json.Marshal(tx.Entries)
+	if err != nil {
+		return postgresql.CreateTransactionPQParams{}, fmt.Errorf("failed to marshal ACL entries: %w", err)
+	}
+
+	/* convert timestamp to pgtype.Timestamptz */
+	var timestamp pgtype.Timestamptz
+	if err := timestamp.Scan(tx.Timestamp); err != nil {
+		return postgresql.CreateTransactionPQParams{}, fmt.Errorf("failed to convert timestamp: %w", err)
+	}
+
+	/* handle optional error message */
+	var errorMsg pgtype.Text
+	if tx.ErrorMsg != "" {
+		errorMsg = pgtype.Text{String: tx.ErrorMsg, Valid: true}
+	}
+
+	/* handle optional output */
+	var output pgtype.Text
+	if tx.Output != "" {
+		output = pgtype.Text{String: tx.Output, Valid: true}
+	}
+
+	/* Handle optional duration */
+	var durationMs pgtype.Int8
+	if tx.DurationMs > 0 {
+		durationMs = pgtype.Int8{Int64: tx.DurationMs, Valid: true}
+	}
+
+	return postgresql.CreateTransactionPQParams{
+		ID:         tx.ID,
+		SessionID:  tx.SessionID,
+		Timestamp:  timestamp,
+		Operation:  string(tx.Operation),
+		TargetPath: tx.TargetPath,
+		Entries:    entriesJSON,
+		Status:     string(tx.Status),
+		ErrorMsg:   errorMsg,
+		Output:     output,
+		ExecutedBy: tx.ExecutedBy,
+		DurationMs: durationMs,
+	}, nil
+}