Convert SQL to DAX

[Giavo]

 Hi everybody, i'm trying to convert a SQL query that looks like this to DAX but without a success:

CASE WHEN [T.Time_Week] > DATEADD(WEEK, DATEDIFF(WEEK, 0, GETDATE()) - 1, 0) THEN  '3: Current week and forward'
                 WHEN [T.Time_Week] >= DATEADD(WEEK, DATEDIFF(WEEK, 0, GETDATE()) - 10, 0) THEN '2: Last 10 Weeks'
                 ELSE '1: Before Last 10 Weeks' END AS Time_Window

Can you help me with this please ?
Many thanks

[Giavo]

well the main question is how to convert into DAX the SQL "CASE WHEN" query, and then this part of the query also is not clear to me: DATEADD(WEEK, DATEDIFF(WEEK, 0, GETDATE()) - 10, 0) THEN '2: Last 10 Weeks'

[Greg_Deckler]

What specific piece are you having trouble with? Can you supply sample data?