first commit

internal/audit/audit.go

@@ -0,0 +1,44 @@
+package audit
+
+import (
+	"context"
+	"encoding/json"
+	"log/slog"
+
+	"github.com/noderunners/nip05api/internal/db"
+)
+
+const (
+	ActorAdmin  = "admin"
+	ActorSystem = "system"
+
+	ActionUserAdded            = "user.added"
+	ActionUserUsernameChanged  = "user.username_changed"
+	ActionUserExtended         = "user.extended"
+	ActionUserDeleted          = "user.deleted"
+	ActionPaymentConfirmed     = "payment.confirmed"
+	ActionUserExpired          = "user.expired"
+	ActionUserGracePurged      = "user.grace_purged"
+)
+
+type Logger struct{ db *db.DB }
+
+func New(d *db.DB) *Logger { return &Logger{db: d} }
+
+func (l *Logger) Log(ctx context.Context, action, actor, pubkey string, details map[string]any) {
+	if l == nil || l.db == nil {
+		return
+	}
+	var detailsJSON string
+	if details != nil {
+		b, err := json.Marshal(details)
+		if err == nil {
+			detailsJSON = string(b)
+		}
+	}
+	if _, err := l.db.ExecContext(ctx,
+		`INSERT INTO audit_log (action, actor, pubkey, details) VALUES (?, ?, ?, ?)`,
+		action, actor, pubkey, detailsJSON); err != nil {
+		slog.Warn("audit log insert failed", "action", action, "err", err)
+	}
+}