fix: update React hooks for optimistic form submission

src/forms/Travel/index.tsx

@@ -1,4 +1,5 @@
-import { useOptimistic, useRef, useState } from "react";
+import { useActionState, useOptimistic, useRef } from "react";
+import { UseOptimisticStateForm } from "../UseOptimisticState";
 
 const initDialogRef = (ref: HTMLDialogElement) => {
   ref.showModal();
@@ -13,33 +14,34 @@ const deliverTitle = async (title: string) => {
 };
 export const TravelForm = () => {
   const formRef = useRef<HTMLFormElement | null>(null);
-  const [title, setTitle] = useState("");
-  const [optimisticTitle, addOptimisticTitle] = useOptimistic<string, string>(
-    title,
+  const [title, setTitle] = useOptimistic<string, string>(
+    "",
     (_currentState, optimisticValue) => optimisticValue
   );
-
-  const sendTitle = async (formData: FormData) => {
-    const sentTitle = await deliverTitle(formData.get("title") as string);
-    setTitle(() => sentTitle);
-  };
-
-  const formAction = async (formData: FormData) => {
-    addOptimisticTitle(formData.get("title") as string);
-    formRef.current?.reset();
-    await sendTitle(formData);
-  };
+  const [response, submitAction, isPending] = useActionState<
+    string | null,
+    FormData
+  >(
+    async (_, formData) => {
+      const requestTitle = formData.get("title") as string;
+      setTitle(requestTitle);
+      await deliverTitle(requestTitle);
+      return requestTitle + "done";
+    },
+    null,
+    "/finished"
+  );
 
   return (
     <>
       <dialog ref={initDialogRef}>
-        <form ref={formRef} action={formAction}>
-          optimatic : {optimisticTitle}
-          <div />
-          label : {title}
+        <UseOptimisticStateForm />
+        <form ref={formRef} action={submitAction}>
+          label : {isPending ? title : response}
           <div />
           <input name="title" type="text" />
           <button type="submit">Submit</button>
+          {isPending && <p>Submitting...</p>}
         </form>
       </dialog>
     </>

src/forms/UseOptimisticActionState/index.tsx

@@ -0,0 +1,69 @@
+import { useActionState, useOptimistic } from "react";
+
+type ReturnResponse = {
+  ok: boolean;
+  message?: string;
+};
+
+type FormYourNameProps = {
+  name: string;
+};
+
+async function updateName(props: FormYourNameProps): Promise<ReturnResponse> {
+  console.log(props);
+  await new Promise((resolve) => setTimeout(resolve, 1000));
+  if (props.name.length < 3) {
+    return {
+      ok: false,
+      message: "Name is too short",
+    };
+  }
+  return {
+    ok: true,
+  };
+}
+
+const parseFormData = (formData: FormData) => {
+  const name = formData.get("name") as string;
+  return {
+    name,
+  };
+};
+
+export const UseOptimisticActionStateForm = () => {
+  const [name, setName] = useOptimistic("name");
+  const [response, submitAction, isPending] = useActionState<
+    ReturnResponse | null,
+    FormData
+  >(
+    async (_, formData) => {
+      const props = parseFormData(formData);
+      setName(props.name);
+      const error = await updateName(props);
+      if (!error.ok) {
+        return error;
+      }
+      // redirect to /finished without 3rd argument
+      // redirect("/finished", RedirectType.push);
+      return null;
+    },
+    null,
+    // redirect to /finished
+    "/finished"
+  );
+
+  return (
+    <div>
+      <form action={submitAction}>
+        <p>Current Name: {name}</p>
+        <label>
+          New Name:
+          <input type="text" name="name" />
+        </label>
+        <button type="submit">Submit</button>
+        {isPending && <p>Submitting...</p>}
+        {response && <p>{response.message}</p>}
+      </form>
+    </div>
+  );
+};

src/forms/UseOptimisticState/index.tsx

@@ -0,0 +1,40 @@
+import { useOptimistic, useRef, useState } from "react";
+
+const deliverTitle = async (title: string) => {
+  await new Promise((res) => setTimeout(res, 1000));
+  return title;
+};
+export const UseOptimisticStateForm = () => {
+  const formRef = useRef<HTMLFormElement | null>(null);
+
+  const [title, setTitle] = useState("");
+
+  const [optimisticTitle, addOptimisticTitle] = useOptimistic<string, string>(
+    title,
+    (_currentState, optimisticValue) => optimisticValue
+  );
+
+  const sendTitle = async (formData: FormData) => {
+    const sentTitle = await deliverTitle(formData.get("title") as string);
+    setTitle(() => sentTitle);
+  };
+
+  const formAction = async (formData: FormData) => {
+    addOptimisticTitle(formData.get("title") as string);
+    formRef.current?.reset();
+    await sendTitle(formData);
+  };
+
+  return (
+    <>
+      <form ref={formRef} action={formAction}>
+        optimatic : {optimisticTitle}
+        <div />
+        label : {title}
+        <div />
+        <input name="title" type="text" />
+        <button type="submit">Submit</button>
+      </form>
+    </>
+  );
+};