+
+ // Remove challenges older than 1 month, and 1to1 older than 2 days
+ removeOld: function()
+ {
+ const tsNow = Date.now();
+ // 86400000 = 24 hours in milliseconds
+ const day = 86400000;
+ db.serialize(function() {
+ const query =
+ "SELECT id, target " +
+ "FROM Challenges";
+ db.all(query, (err, challenges) => {
+ challenges.forEach(c => {
+ if ((!c.target && tsNow - c.added > 30*day) ||
+ (!!c.target && tsNow - c.added > 2*day))
+ {
+ db.run("DELETE FROM CHallenges WHERE id = " + c.id);
+ }
+ });
+ });
+ });
+ },