Merge pull request #119 from notion-dotnet/feature/103-formula-property-can-now-be-created-and-updated-in-database

Add support to create and update Formula property in database ✨

Author: KoditkarVedant

Src/Notion.Client/Api/Databases/RequestParams/DatabasesCreateParameters/PropertySchema/FormulaPropertySchema.cs

@@ -0,0 +1,7 @@
+namespace Notion.Client
+{
+    public class FormulaPropertySchema : IPropertySchema
+    {
+        public Formula Formula { get; set; }
+    }
+}

Src/Notion.Client/Api/Databases/RequestParams/DatabasesUpdateParameters/PropertySchema/FormulaUpdatePropertySchema.cs

@@ -0,0 +1,7 @@
+namespace Notion.Client
+{
+    public class FormulaUpdatePropertySchema : IUpdatePropertySchema
+    {
+        public Formula Formula { get; set; }
+    }
+}

Test/Notion.UnitTests/DatabasesClientTests.cs

@@ -356,5 +356,56 @@ public async Task UpdateDatabaseAsync()
             var price = (NumberProperty)database.Properties["Price"];
             price.Number.Format.Should().Be(NumberFormat.Yen);
         }
+
+        [Fact]
+        public async Task FormulaPropertyCanBeSetWhenCreatingDatabase()
+        {
+            var pageId = "98ad959b-2b6a-4774-80ee-00246fb0ea9b";
+            var path = ApiEndpoints.DatabasesApiUrls.Create;
+            var jsonData = await File.ReadAllTextAsync("data/databases/FormulaPropertyCanBeSetWhenCreatingDatabaseResponse.json");
+
+            Server.Given(CreatePostRequestBuilder(path))
+                .RespondWith(
+                Response.Create()
+                    .WithStatusCode(200)
+                    .WithBody(jsonData)
+            );
+
+            var createDatabaseParameters = new DatabasesCreateParameters();
+
+            createDatabaseParameters.Parent = new ParentPageInput
+            {
+                PageId = pageId
+            };
+
+            createDatabaseParameters.Title = new List<RichTextBaseInput>
+            {
+                new RichTextTextInput
+                {
+                    Text = new Text
+                    {
+                        Content = "Grocery List",
+                        Link = null
+                    }
+                }
+            };
+
+            createDatabaseParameters.Properties = new Dictionary<string, IPropertySchema>
+            {
+                { "Cost of next trip", new FormulaPropertySchema { Formula = new Formula { Expression = "if(prop(\"In stock\"), 0, prop(\"Price\"))" } } },
+                { "Price", new NumberPropertySchema { Number = new Number { Format = NumberFormat.Dollar } } }
+            };
+
+            var database = await _client.CreateAsync(createDatabaseParameters);
+
+            database.Parent.Type.Should().Be(ParentType.PageId);
+            database.Parent.Should().BeOfType<PageParent>();
+            ((PageParent)database.Parent).PageId.Should().Be(pageId);
+
+            database.Properties.Should().HaveCount(2);
+
+            var formulaProperty = (FormulaProperty)database.Properties["Cost of next trip"];
+            formulaProperty.Formula.Expression.Should().Be("if(prop(\"In stock\"), 0, prop(\"Price\"))");
+        }
     }
 }

Test/Notion.UnitTests/Notion.UnitTests.csproj

@@ -81,6 +81,9 @@
     <None Update="data\search\SearchResponse.json">
       <CopyToOutputDirectory>Always</CopyToOutputDirectory>
     </None>
+    <None Update="data\databases\FormulaPropertyCanBeSetWhenCreatingDatabaseResponse.json">
+      <CopyToOutputDirectory>Always</CopyToOutputDirectory>
+    </None>
   </ItemGroup>
 
 </Project>

Test/Notion.UnitTests/data/databases/FormulaPropertyCanBeSetWhenCreatingDatabaseResponse.json

@@ -0,0 +1,47 @@
+{
+    "object": "database",
+    "id": "c23f0085-a061-41c0-b8a6-cbe14d15a4de",
+    "created_time": "2021-08-20T16:08:00.000Z",
+    "last_edited_time": "2021-08-20T16:08:00.000Z",
+    "title": [
+        {
+            "type": "text",
+            "text": {
+                "content": "Grocery List",
+                "link": null
+            },
+            "annotations": {
+                "bold": false,
+                "italic": false,
+                "strikethrough": false,
+                "underline": false,
+                "code": false,
+                "color": "default"
+            },
+            "plain_text": "Grocery List",
+            "href": null
+        }
+    ],
+    "properties": {
+        "Cost of next trip": {
+            "id": "Rbq\\",
+            "name": "Cost of next trip",
+            "type": "formula",
+            "formula": {
+                "expression": "if(prop(\"In stock\"), 0, prop(\"Price\"))"
+            }
+        },
+        "Price": {
+            "id": "u|<{",
+            "name": "Price",
+            "type": "number",
+            "number": {
+                "format": "dollar"
+            }
+        }
+    },
+    "parent": {
+        "type": "page_id",
+        "page_id": "98ad959b-2b6a-4774-80ee-00246fb0ea9b"
+    }
+}