Major database refactor (again)

PluralKit.Core/Database/Repository/ModelRepository.Member.cs

@@ -0,0 +1,47 @@
+#nullable enable
+using System.Threading.Tasks;
+
+using Dapper;
+
+namespace PluralKit.Core
+{
+    public partial class ModelRepository
+    {
+        public Task<PKMember?> GetMember(IPKConnection conn, MemberId id) =>
+            conn.QueryFirstOrDefaultAsync<PKMember?>("select * from members where id = @id", new {id});
+        
+        public Task<PKMember?> GetMemberByHid(IPKConnection conn, string hid) => 
+            conn.QuerySingleOrDefaultAsync<PKMember?>("select * from members where hid = @Hid", new { Hid = hid.ToLower() });
+
+        public Task<PKMember?> GetMemberByName(IPKConnection conn, SystemId system, string name) => 
+            conn.QueryFirstOrDefaultAsync<PKMember?>("select * from members where lower(name) = lower(@Name) and system = @SystemID", new { Name = name, SystemID = system });
+
+        public Task<PKMember?> GetMemberByDisplayName(IPKConnection conn, SystemId system, string name) => 
+            conn.QueryFirstOrDefaultAsync<PKMember?>("select * from members where lower(display_name) = lower(@Name) and system = @SystemID", new { Name = name, SystemID = system });
+
+        public async Task<PKMember> CreateMember(IPKConnection conn, SystemId id, string memberName)
+        {
+            var member = await conn.QueryFirstAsync<PKMember>(
+                "insert into members (hid, system, name) values (find_free_member_hid(), @SystemId, @Name) returning *",
+                new {SystemId = id, Name = memberName});
+            _logger.Information("Created {MemberId} in {SystemId}: {MemberName}",
+                member.Id, id, memberName);
+            return member;
+        }
+
+        public Task<PKMember> UpdateMember(IPKConnection conn, MemberId id, MemberPatch patch)
+        {
+            _logger.Information("Updated {MemberId}: {@MemberPatch}", id, patch);
+            var (query, pms) = patch.Apply(UpdateQueryBuilder.Update("members", "id = @id"))
+                .WithConstant("id", id)
+                .Build("returning *");
+            return conn.QueryFirstAsync<PKMember>(query, pms);
+        }
+
+        public Task DeleteMember(IPKConnection conn, MemberId id)
+        {
+            _logger.Information("Deleted {MemberId}", id);
+            return conn.ExecuteAsync("delete from members where id = @Id", new {Id = id});
+        }
+    }
+}