[#34] First step of not using Bio as Attribute

Elwig/Helpers/AppDbContext.cs

@@ -17,6 +17,7 @@ namespace Elwig.Helpers {
     public record struct AreaComBucket(int Area, int Obligation, int Right);
     public record struct UnderDelivery(int Weight, int Diff);
     public record struct MemberBucket(string Name, int Area, int Obligation, int Right, int Delivery, int DeliveryStrict, int Payment);
+    public record struct MemberStat(string Variety, string Discr, int Weight);
 
     public class AppDbContext : DbContext {
 
@@ -159,6 +160,10 @@ namespace Elwig.Helpers {
             return await WineAttributes.FindAsync(attrId) != null;
         }
 
+        public async Task<bool> CultIdExists(string cultId) {
+            return await WineCultivations.FindAsync(cultId) != null;
+        }
+
         public async Task<int> NextMgNr() {
             int c = 0;
             (await Members.OrderBy(m => m.MgNr).Select(m => m.MgNr).ToListAsync())
@@ -384,5 +389,31 @@ namespace Elwig.Helpers {
             }
             return buckets;
         }
+
+        public static async Task<List<MemberStat>> GetMemberStats(int year, int mgnr, SqliteConnection? cnx = null) {
+            var ownCnx = cnx == null;
+            cnx ??= await ConnectAsync();
+            var list = new List<MemberStat>();
+            using (var cmd = cnx.CreateCommand()) {
+                cmd.CommandText = $"""
+                    SELECT v.name AS variety,
+                           COALESCE(a.name, '') || IIF(a.name IS NOT NULL AND c.name IS NOT NULL, ' / ', '') || COALESCE(c.name, '') AS disc,
+                           SUM(weight) AS weight
+                    FROM v_delivery d
+                        LEFT JOIN wine_variety v ON v.sortid = d.sortid
+                        LEFT JOIN wine_attribute a ON a.attrid = d.attrid
+                        LEFT JOIN wine_cultivation c ON c.cultid = d.cultid
+                    WHERE d.year = {year} AND d.mgnr = {mgnr}
+                    GROUP BY d.sortid, d.attrid, d.cultid
+                    ORDER BY variety, disc;
+                    """;
+                using var reader = await cmd.ExecuteReaderAsync();
+                while (await reader.ReadAsync()) {
+                    list.Add(new(reader.GetString(0), reader.GetString(1), reader.GetInt32(2)));
+                }
+            }
+            if (ownCnx) await cnx.DisposeAsync();
+            return list;
+        }
     }
 }