Invoice filter must work with duplicated filter

BTCPayServer.Tests/UnitTest1.cs

@@ -598,8 +598,18 @@ namespace BTCPayServer.Tests
             var search = new SearchString(filter);
             Assert.Equal("storeid:abc status:abed blabhbalh", search.ToString());
             Assert.Equal("blabhbalh", search.TextSearch);
-            Assert.Equal("abc", search.Filters["storeid"]);
-            Assert.Equal("abed", search.Filters["status"]);
+            Assert.Single(search.Filters["storeid"]);
+            Assert.Single(search.Filters["status"]);
+            Assert.Equal("abc", search.Filters["storeid"].First());
+            Assert.Equal("abed", search.Filters["status"].First());
+
+            filter = "status:abed status:abed2";
+            search = new SearchString(filter);
+            Assert.Equal("status:abed status:abed2", search.ToString());
+            Assert.Throws<KeyNotFoundException>(() => search.Filters["test"]);
+            Assert.Equal(2, search.Filters["status"].Count);
+            Assert.Equal("abed", search.Filters["status"].First());
+            Assert.Equal("abed2", search.Filters["status"].Skip(1).First());
         }
 
         [Fact]
@@ -1054,13 +1064,13 @@ namespace BTCPayServer.Tests
                 {
                     var textSearchResult = tester.PayTester.InvoiceRepository.GetInvoices(new InvoiceQuery()
                     {
-                        StoreId = user.StoreId,
+                        StoreId = new[] { user.StoreId },
                         TextSearch = invoice.OrderId
                     }).GetAwaiter().GetResult();
                     Assert.Single(textSearchResult);
                     textSearchResult = tester.PayTester.InvoiceRepository.GetInvoices(new InvoiceQuery()
                     {
-                        StoreId = user.StoreId,
+                        StoreId = new[] { user.StoreId },
                         TextSearch = invoice.Id
                     }).GetAwaiter().GetResult();
 

BTCPayServer/Controllers/InvoiceController.API.cs

@@ -87,8 +87,8 @@ namespace BTCPayServer.Controllers
                 StartDate = dateStart,
                 OrderId = orderId,
                 ItemCode = itemCode,
-                Status = status,
-                StoreId = store.Id
+                Status = status == null ? null : new[] { status },
+                StoreId = new[] { store.Id }
             };
 
 

BTCPayServer/Controllers/InvoiceController.UI.cs

@@ -366,8 +366,8 @@ namespace BTCPayServer.Controllers
                 Count = count,
                 Skip = skip,
                 UserId = GetUserId(),
-                Status = filterString.Filters.TryGet("status"),
-                StoreId = filterString.Filters.TryGet("storeid")
+                Status = filterString.Filters.ContainsKey("status") ? filterString.Filters["status"].ToArray() : null,
+                StoreId = filterString.Filters.ContainsKey("storeid") ? filterString.Filters["storeid"].ToArray() : null
             }))
             {
                 model.SearchTerm = searchTerm;

BTCPayServer/MultiValueDictionary.cs

@@ -1111,4 +1111,17 @@ namespace BTCPayServer
             #endregion
         }
     }
+
+    public static class MultiValueDictionaryExtensions
+    {
+        public static MultiValueDictionary<TKey, TValue> ToMultiValueDictionary<TInput, TKey, TValue>(this IEnumerable<TInput> collection, Func<TInput, TKey> keySelector, Func<TInput, TValue> valueSelector)
+        {
+            var dictionary = new MultiValueDictionary<TKey, TValue>();
+            foreach(var item in collection)
+            {
+                dictionary.Add(keySelector(item), valueSelector(item));
+            }
+            return dictionary;
+        }
+    }
 }

BTCPayServer/SearchString.cs

@@ -21,7 +21,7 @@ namespace BTCPayServer
                     .Select(t => t.Split(new char[] { ':' }, StringSplitOptions.RemoveEmptyEntries))
                     .Where(kv => kv.Length == 2)
                     .Select(kv => new KeyValuePair<string, string>(kv[0].ToLowerInvariant(), kv[1]))
-                    .ToDictionary(o => o.Key, o => o.Value);
+                    .ToMultiValueDictionary(o => o.Key, o => o.Value);
 
             foreach(var filter in splitted)
             {
@@ -39,7 +39,7 @@ namespace BTCPayServer
             private set;
         }
         
-        public Dictionary<string, string> Filters { get; private set; }
+        public MultiValueDictionary<string, string> Filters { get; private set; }
 
         public override string ToString()
         {

BTCPayServer/Services/Invoices/InvoiceRepository.cs

@@ -399,9 +399,10 @@ namespace BTCPayServer.Services.Invoices
                     query = query.Where(i => i.Id == queryObject.InvoiceId);
                 }
 
-                if (!string.IsNullOrEmpty(queryObject.StoreId))
+                if (queryObject.StoreId != null && queryObject.StoreId.Length > 0)
                 {
-                    query = query.Where(i => i.StoreDataId == queryObject.StoreId);
+                    var stores = queryObject.StoreId.ToHashSet();
+                    query = query.Where(i => stores.Contains(i.StoreDataId));
                 }
 
                 if (queryObject.UserId != null)
@@ -429,8 +430,11 @@ namespace BTCPayServer.Services.Invoices
                 if (queryObject.OrderId != null)
                     query = query.Where(i => i.OrderId == queryObject.OrderId);
 
-                if (queryObject.Status != null)
-                    query = query.Where(i => i.Status == queryObject.Status);
+                if (queryObject.Status != null && queryObject.Status.Length > 0)
+                {
+                    var statusSet = queryObject.Status.ToHashSet();
+                    query = query.Where(i => statusSet.Contains(i.Status));
+                }
 
                 query = query.OrderByDescending(q => q.Created);
 
@@ -568,7 +572,7 @@ namespace BTCPayServer.Services.Invoices
 
     public class InvoiceQuery
     {
-        public string StoreId
+        public string[] StoreId
         {
             get; set;
         }
@@ -610,7 +614,7 @@ namespace BTCPayServer.Services.Invoices
             get; set;
         }
 
-        public string Status
+        public string[] Status
         {
             get; set;
         }

BTCPayServer/Views/Invoice/ListInvoices.cshtml

@@ -26,6 +26,9 @@
                         <li><b>storeid:id</b> for filtering a specific store</li>
                         <li><b>status:(expired|invalid|complete|confirmed|paid|new)</b> for filtering a specific status</li>
                     </ul>
+                    <p>
+                        If you want two confirmed and complete invoices, duplicate the filter: `status:confirmed status:complete`.
+                    </p>
                 </div>
                 <div class="form-group">
                     <form asp-action="SearchInvoice" method="post">