feat(core): add react-hook form resolver

packages/elements-react/src/components/form/__snapshots__/form-resolver.test.tsx.snap

@@ -0,0 +1,70 @@
+// Jest Snapshot v1, https://goo.gl/fbAQLP
+
+exports[`case={"method":"code","code":"","email":""} 1`] = `
+{
+  "errors": {
+    "code": {
+      "context": {
+        "property": "code",
+      },
+      "id": 4000002,
+      "text": "Property code is missing",
+      "type": "error",
+    },
+  },
+  "values": {
+    "code": "",
+    "email": "",
+    "method": "code",
+  },
+}
+`;
+
+exports[`case={"method":"code","code":"123456","email":""} 1`] = `
+{
+  "errors": {},
+  "values": {
+    "code": "123456",
+    "email": "",
+    "method": "code",
+  },
+}
+`;
+
+exports[`case={"method":"code","code":"123456","email":"[email protected]"} 1`] = `
+{
+  "errors": {},
+  "values": {
+    "code": "123456",
+    "email": "[email protected]",
+    "method": "code",
+  },
+}
+`;
+
+exports[`case={"method":"code"} 1`] = `
+{
+  "errors": {
+    "code": {
+      "context": {
+        "property": "code",
+      },
+      "id": 4000002,
+      "text": "Property code is missing",
+      "type": "error",
+    },
+  },
+  "values": {
+    "method": "code",
+  },
+}
+`;
+
+exports[`case={"method":"password"} 1`] = `
+{
+  "errors": {},
+  "values": {
+    "method": "password",
+  },
+}
+`;

packages/elements-react/src/components/form/form-provider.tsx

@@ -3,9 +3,10 @@
 
 import { UiNode, UiNodeGroupEnum } from "@ory/client-fetch"
 import { PropsWithChildren } from "react"
-import { useOryFlow } from "../../context"
 import { FormProvider, useForm } from "react-hook-form"
+import { useOryFlow } from "../../context"
 import { computeDefaultValues } from "./form-helpers"
+import { useOryFormResolver } from "./form-resolver"
 
 export function OryFormProvider({
   children,
@@ -21,6 +22,8 @@ export function OryFormProvider({
   const methods = useForm({
     // TODO: Generify this, so we have typesafety in the submit handler.
     defaultValues: computeDefaultValues(defaultNodes),
+    resolver: useOryFormResolver(),
   })
+
   return <FormProvider {...methods}>{children}</FormProvider>
 }

packages/elements-react/src/components/form/form-resolver.test.tsx

@@ -0,0 +1,58 @@
+// Copyright © 2024 Ory Corp
+// SPDX-License-Identifier: Apache-2.0
+
+import { renderHook } from "@testing-library/react"
+import { FormValues } from "../../types"
+import { useOryFormResolver } from "./form-resolver"
+import { OryFlowProvider } from "../../context/flow-context"
+import { defaultConfiguration } from "../../tests/jest/test-utils"
+import { PropsWithChildren } from "react"
+import { FlowType, LoginFlow } from "@ory/client-fetch"
+
+const testCases = [
+  {
+    method: "code",
+    code: "",
+    email: "",
+  },
+  {
+    method: "code",
+  },
+  {
+    method: "code",
+    code: "123456",
+    email: "",
+  },
+  {
+    method: "code",
+    code: "123456",
+    email: "[email protected]",
+  },
+  {
+    method: "password",
+  },
+] satisfies FormValues[]
+
+const wrapper = ({ children }: PropsWithChildren) => (
+  <OryFlowProvider
+    config={defaultConfiguration}
+    flow={
+      {
+        active: "code",
+        ui: { nodes: [], action: "", method: "" },
+      } as unknown as LoginFlow // Fine, we're just testing the resolver
+    }
+    flowType={FlowType.Login}
+  >
+    {children}
+  </OryFlowProvider>
+)
+
+for (const testCase of testCases) {
+  test("case=" + JSON.stringify(testCase), () => {
+    const formResolver = renderHook(() => useOryFormResolver(), {
+      wrapper,
+    })
+    expect(formResolver.result.current(testCase)).toMatchSnapshot()
+  })
+}

packages/elements-react/src/components/form/form-resolver.ts

@@ -0,0 +1,44 @@
+// Copyright © 2024 Ory Corp
+// SPDX-License-Identifier: Apache-2.0
+
+import { useOryFlow } from "../../context"
+import { FormValues } from "../../types"
+
+function isCodeResendRequest(data: FormValues) {
+  return data.email ?? data.resend
+}
+
+/**
+ * Creates a resolver for the Ory form
+ *
+ * The resolver does form validation for missing fields in the form.
+ *
+ * @returns a react-hook-form resolver for the Ory form
+ */
+export function useOryFormResolver() {
+  const flowContainer = useOryFlow()
+
+  return (data: FormValues) => {
+    if (flowContainer.formState.current === "method_active") {
+      if (data.method === "code" && !data.code && !isCodeResendRequest(data)) {
+        return {
+          values: data,
+          errors: {
+            code: {
+              id: 4000002,
+              context: {
+                property: "code",
+              },
+              type: "error",
+              text: "Property code is missing",
+            },
+          },
+        }
+      }
+    }
+    return {
+      values: data,
+      errors: {},
+    }
+  }
+}

packages/elements-react/src/components/form/nodes/input.tsx

@@ -30,9 +30,12 @@ export const NodeInput = ({
     //
     ...attrs
   } = attributes
+  const isResendNode = node.meta.label?.id === 1070008
+  const isScreenSelectionNode =
+    "name" in node.attributes && node.attributes.name === "screen"
 
   const setFormValue = () => {
-    if (attrs.value) {
+    if (attrs.value && !(isResendNode || isScreenSelectionNode)) {
       setValue(attrs.name, attrs.value)
     }
   }
@@ -64,9 +67,6 @@ export const NodeInput = ({
   const isPinCodeInput =
     (attrs.name === "code" && node.group === "code") ||
     (attrs.name === "totp_code" && node.group === "totp")
-  const isResendNode = node.meta.label?.id === 1070008
-  const isScreenSelectionNode =
-    "name" in node.attributes && node.attributes.name === "screen"
 
   switch (attributes.type) {
     case UiNodeInputAttributesTypeEnum.Submit:

packages/elements-react/src/theme/default/components/form/label.tsx

@@ -1,7 +1,12 @@
 // Copyright © 2024 Ory Corp
 // SPDX-License-Identifier: Apache-2.0
 
-import { FlowType, getNodeLabel, UiNode } from "@ory/client-fetch"
+import {
+  FlowType,
+  getNodeLabel,
+  instanceOfUiText,
+  UiNode,
+} from "@ory/client-fetch"
 import {
   OryNodeLabelProps,
   messageTestId,
@@ -31,7 +36,7 @@ export function DefaultLabel({
   const label = getNodeLabel(node)
   const { Message } = useComponents()
   const { config, flowType, flow } = useOryFlow()
-  const { setValue } = useFormContext()
+  const { setValue, formState } = useFormContext()
 
   const isPassword = attributes.type === "password"
 
@@ -43,6 +48,8 @@ export function DefaultLabel({
     }
   }
 
+  const fieldError = formState.errors[attributes.name]
+
   return (
     <div className="flex flex-col antialiased gap-1">
       {label && (
@@ -86,6 +93,9 @@ export function DefaultLabel({
       {node.messages.map((message) => (
         <Message.Content key={message.id} message={message} />
       ))}
+      {fieldError && instanceOfUiText(fieldError) && (
+        <Message.Content message={fieldError} />
+      )}
     </div>
   )
 }