Astro でアプリ内フィードバックフォームを作る

src/
  actions/index.ts
  components/FeedbackForm.astro
  middleware.ts
  env.d.ts
  pages/app/projects/[id]/settings.astro
astro.config.mjs
.env

import { defineConfig, envField } from "astro/config";
import node from "@astrojs/node";

export default defineConfig({
  adapter: node({ mode: "standalone" }),
  env: {
    schema: {
      IKIFORM_SECRET_KEY: envField.string({ context: "server", access: "secret" }),
    },
  },
});

import { defineMiddleware } from "astro:middleware";
import { readSession } from "./lib/auth";

export const onRequest = defineMiddleware(async (context, next) => {
  context.locals.user = await readSession(context.cookies.get("session")?.value);
  return next();
});

declare namespace App {
  interface Locals {
    user: { id: string; email: string } | null;
  }
}

import { ActionError, defineAction } from "astro:actions";
import { IKIFORM_SECRET_KEY } from "astro:env/server";
import { z } from "astro/zod";

function pageFrom(referer: string | null) {
  try {
    const url = new URL(referer ?? "");
    return url.origin + url.pathname;
  } catch {
    return "";
  }
}

export const server = {
  sendFeedback: defineAction({
    accept: "form",
    input: z.object({
      rating: z.coerce.number().int().min(1, "Pick a score from 1 to 5.").max(5, "Pick a score from 1 to 5."),
      comment: z.string().max(4000).nullish(),
      screen: z.string().regex(/^\/[a-z0-9/[\]._-]{0,119}$/).catch("unknown"),
      _gotcha: z.string().nullish(),
    }),
    handler: async (input, context) => {
      const user = context.locals.user;
      if (!user) throw new ActionError({ code: "UNAUTHORIZED", message: "Your session ended. Sign in again, then send it." });

      const origin = context.request.headers.get("origin");
      const response = await fetch("https://ikiform.com/f/frm_xxxxxxxxxxxxxxxx", {
        method: "POST",
        headers: {
          Accept: "application/json",
          "Content-Type": "application/json",
          Authorization: `Bearer ${IKIFORM_SECRET_KEY}`,
          ...(origin ? { Origin: origin } : {}),
        },
        body: JSON.stringify({
          rating: input.rating,
          comment: input.comment ?? "",
          page: pageFrom(context.request.headers.get("referer")),
          screen: input.screen,
          user_id: user.id,
          email: user.email,
          _gotcha: input._gotcha ?? "",
        }),
        signal: AbortSignal.timeout(8000),
      }).catch(() => null);

      const result = await response?.json().catch(() => null);
      if (result?.ok) return { sent: true };
      throw new ActionError({
        code: "BAD_GATEWAY",
        message: result?.error?.message ?? "We couldn't send it. Try again in a moment.",
      });
    },
  }),
};

---
import { actions, isInputError } from "astro:actions";

const result = Astro.getActionResult(actions.sendFeedback);
const scores = ["Broken", "Frustrating", "Fine", "Good", "Great"];
---

{result?.data?.sent ? (
  <p role="status">Thanks. We read every one.</p>
) : (
  <form method="POST" action={actions.sendFeedback} data-feedback>
    <fieldset>
      <legend>How is this screen working for you?</legend>
      {scores.map((label, index) => (
        <label><input type="radio" name="rating" value={index + 1} required /> {label}</label>
      ))}
    </fieldset>
    <label for="feedback-comment">What would make it better?</label>
    <textarea id="feedback-comment" name="comment" rows="4" maxlength="4000"></textarea>
    <input type="hidden" name="screen" value={Astro.routePattern} />
    <input name="_gotcha" type="text" tabindex="-1" autocomplete="off" hidden />
    <p role="alert">
      {result?.error && (isInputError(result.error) ? result.error.fields.rating?.[0] : result.error.message)}
    </p>
    <button>Send feedback</button>
  </form>
)}

<script>
  import { actions } from "astro:actions";

  const form = document.querySelector<HTMLFormElement>("form[data-feedback]");
  form?.addEventListener("submit", async (event) => {
    event.preventDefault();
    const button = form.querySelector("button")!;
    const alert = form.querySelector("[role=alert]")!;
    button.disabled = true;
    button.textContent = "Sending";
    const { error } = await actions.sendFeedback(new FormData(form));
    if (!error) {
      form.replaceWith(Object.assign(document.createElement("p"), { role: "status", textContent: "Thanks. We read every one." }));
      return;
    }
    alert.textContent = error.message;
    button.disabled = false;
    button.textContent = "Send feedback";
  });
</script>

---
import AppLayout from "../../../../layouts/AppLayout.astro";
import FeedbackForm from "../../../../components/FeedbackForm.astro";

export const prerender = false;

if (!Astro.locals.user) return Astro.redirect("/sign-in");
---

<AppLayout title="Project settings">
  <h1>Project settings</h1>
  <aside>
    <FeedbackForm />
  </aside>
</AppLayout>