user ids are 2**31 max

2 files changed, 6 insertions, 6 deletions

diff --git a/db.vala b/db.vala
index b30fb57..3135ae7 100644
--- a/db.vala
+++ b/db.vala
@@ -8,7 +8,7 @@ public class Database {
 	private Sqlite.Statement undo_stmt3;
 	private Sqlite.Statement stock_stmt1;
 	private Sqlite.Statement stock_stmt2;
-	uint64 user = 0;
+	int32 user = 0;
 	uint64 product = 0;
 	bool logged_in = false;
 	bool stock_mode = false;
@@ -71,7 +71,7 @@ public class Database {
 
 	}
 
-	public bool login(uint64 id) {
+	public bool login(int32 id) {
 		this.user = id;
 		this.logged_in = true;
 		return true;
@@ -90,7 +90,7 @@ public class Database {
 			int64 timestamp = (new DateTime.now_utc()).to_unix();
 
 			this.purchase_stmt1.reset();
-			this.purchase_stmt1.bind_text(1, "%llu".printf(user));
+			this.purchase_stmt1.bind_text(1, "%lld".printf(user));
 			this.purchase_stmt1.bind_text(2, "%llu".printf(article));
 			this.purchase_stmt1.bind_text(3, "%llu".printf(timestamp));
 
diff --git a/main.vala b/main.vala
index bbe91d7..f1c7b54 100644
--- a/main.vala
+++ b/main.vala
@@ -20,10 +20,10 @@ public static int main(string[] args) {
 public static bool interpret(string data) {
 	if(data.has_prefix("USER ")) {
 		string str_id = data.substring(5);
-		uint64 id = uint64.parse(str_id);
+		int32 id = int.parse(str_id);
 
 		/* check if data has valid format */
-		if(data != "USER %llu".printf(id)) {
+		if(data != "USER %lld".printf(id)) {
 			stdout.printf("ungültige Benutzernummer: %s\n", data);
 			return false;
 		}
@@ -33,7 +33,7 @@ public static bool interpret(string data) {
 			db.logout();
 		}
 
-		stdout.printf("Login: %llu\n".printf(id));
+		stdout.printf("Login: %lld\n".printf(id));
 		return db.login(id);
 	} else if(data == "GUEST") {
 		if(db.is_logged_in()) {