It seems Jira uses "Resolved" filed to record the time when an issue is resolved and also is colsed. So it is impossible to find issues that just be resolved during week.
1. if we just calculate issue with Status="resolved" and "Resolved" filed within one week, issues had been resolved and closed will be missed. -> wrong
2. if we calculate issue with Status in ("resolved", "closed") and "Resolved" filed within one week, issues just be closed in this week will be calculated here. -> wrong
In my opinion, there should be a new field Colsed to record the time the issue is closed, and "Resolved" can only be updated when a issue is resolved.