ページ、ブラウザー、手順を記録するバグ報告フォームを追加する

<form id="bug" action="https://ikiform.com/f/frm_xxxxxxxxxxxxxxxx" method="post">
  <label for="summary">What went wrong?</label>
  <input id="summary" name="summary" required minlength="8" maxlength="140" />
  <label for="steps">What did you do right before?</label>
  <textarea id="steps" name="steps" rows="5" required minlength="20"></textarea>
  <label for="expected">What did you expect to happen?</label>
  <textarea id="expected" name="expected" rows="3"></textarea>
  <fieldset>
    <legend>How much does it block you?</legend>
    <label><input type="radio" name="severity" value="blocker" required /> I can't continue</label>
    <label><input type="radio" name="severity" value="major" /> I found a workaround</label>
    <label><input type="radio" name="severity" value="minor" /> It's cosmetic</label>
  </fieldset>
  <label for="screenshot_url">Link to a screenshot or recording</label>
  <input id="screenshot_url" name="screenshot_url" type="url" />
  <label for="email">Email for follow-up questions</label>
  <input id="email" name="email" type="email" />
  <input type="hidden" name="page_url" />
  <input type="hidden" name="user_agent" />
  <input type="hidden" name="viewport" />
  <input type="hidden" name="app_version" />
  <input type="hidden" name="recent_errors" />
  <input name="_gotcha" type="text" tabindex="-1" autocomplete="off" hidden />
  <button>Send report</button>
</form>

<script>
  const recent = [];
  function remember(text) {
    recent.push(String(text).replace(/https?:\/\/[^/\s]+/g, "").slice(0, 400));
    if (recent.length > 5) recent.shift();
  }
  window.addEventListener("error", (event) => remember(`${event.message} at ${event.filename}:${event.lineno}`));
  window.addEventListener("unhandledrejection", (event) => remember(`Unhandled: ${event.reason?.stack ?? event.reason}`));

  document.getElementById("bug").addEventListener("submit", (event) => {
    const fields = event.currentTarget.elements;
    fields.page_url.value = location.origin + location.pathname;
    fields.user_agent.value = navigator.userAgent;
    fields.viewport.value = `${innerWidth}x${innerHeight} @${devicePixelRatio}x`;
    fields.app_version.value = document.documentElement.dataset.appVersion ?? "";
    fields.recent_errors.value = recent.join("\n---\n");
  });
</script>

const recent: string[] = [];

function remember(text: string) {
  recent.push(text.replace(/https?:\/\/[^/\s]+/g, "").slice(0, 400));
  if (recent.length > 5) recent.shift();
}

export function installErrorBuffer() {
  const onError = (event: ErrorEvent) => remember(`${event.message} at ${event.filename}:${event.lineno}`);
  const onRejection = (event: PromiseRejectionEvent) => remember(`Unhandled: ${event.reason?.stack ?? event.reason}`);
  window.addEventListener("error", onError);
  window.addEventListener("unhandledrejection", onRejection);
  return () => {
    window.removeEventListener("error", onError);
    window.removeEventListener("unhandledrejection", onRejection);
  };
}

export function browserContext() {
  return {
    page_url: location.origin + location.pathname,
    viewport: `${innerWidth}x${innerHeight} @${devicePixelRatio}x`,
    recent_errors: recent.join("\n---\n"),
  };
}

"use server";

import { headers } from "next/headers";

const FIELDS = ["summary", "steps", "expected", "severity", "screenshot_url", "email", "page_url", "viewport", "recent_errors", "_gotcha"];

export interface ReportState {
  reference: string;
  error: string;
}

export async function reportBug(_previous: ReportState, formData: FormData): Promise<ReportState> {
  const fields = Object.fromEntries(FIELDS.map((name) => [name, String(formData.get(name) ?? "")]));
  const incoming = await headers();
  const origin = incoming.get("origin");
  const response = await fetch("https://ikiform.com/f/frm_xxxxxxxxxxxxxxxx", {
    method: "POST",
    headers: {
      Accept: "application/json",
      "Content-Type": "application/json",
      Authorization: `Bearer ${process.env.IKIFORM_SECRET_KEY}`,
      ...(origin ? { Origin: origin } : {}),
    },
    body: JSON.stringify({
      ...fields,
      user_agent: incoming.get("user-agent") ?? "",
      app_version: process.env.NEXT_PUBLIC_APP_VERSION ?? "",
    }),
  });
  const result = await response.json().catch(() => null);
  if (result?.ok) return { reference: result.id, error: "" };
  const errors: Record<string, string[]> = result?.error?.fields ?? {};
  const first = Object.entries(errors)[0];
  return { reference: "", error: first ? `${first[0]}: ${first[1][0]}` : "Couldn't send the report. Try again." };
}

"use client";

import { useActionState, useEffect } from "react";
import { browserContext, installErrorBuffer } from "@/lib/error-buffer";
import { type ReportState, reportBug } from "./actions";

const initial: ReportState = { reference: "", error: "" };

export function BugReportForm() {
  const [state, dispatch, pending] = useActionState(reportBug, initial);
  useEffect(() => installErrorBuffer(), []);

  function withContext(formData: FormData) {
    for (const [name, value] of Object.entries(browserContext())) formData.set(name, value);
    dispatch(formData);
  }

  if (state.reference) return <p role="status">Thanks. Quote {state.reference} if you write to us about it.</p>;

  return (
    <form action={withContext}>
      <label htmlFor="summary">What went wrong?</label>
      <input id="summary" name="summary" required minLength={8} maxLength={140} />
      <label htmlFor="steps">What did you do right before?</label>
      <textarea id="steps" name="steps" rows={5} required minLength={20} />
      <label htmlFor="expected">What did you expect to happen?</label>
      <textarea id="expected" name="expected" rows={3} />
      <fieldset>
        <legend>How much does it block you?</legend>
        <label><input type="radio" name="severity" value="blocker" required /> I can't continue</label>
        <label><input type="radio" name="severity" value="major" /> I found a workaround</label>
        <label><input type="radio" name="severity" value="minor" /> It's cosmetic</label>
      </fieldset>
      <label htmlFor="screenshot_url">Link to a screenshot or recording</label>
      <input id="screenshot_url" name="screenshot_url" type="url" />
      <label htmlFor="email">Email for follow-up questions</label>
      <input id="email" name="email" type="email" />
      <input name="_gotcha" type="text" tabIndex={-1} autoComplete="off" hidden />
      {state.error ? <p role="alert">{state.error}</p> : null}
      <button disabled={pending}>{pending ? "Sending" : "Send report"}</button>
    </form>
  );
}

import { fail } from "@sveltejs/kit";
import { IKIFORM_SECRET_KEY } from "$app/env/private";
import { PUBLIC_APP_VERSION } from "$app/env/public";
import type { Actions } from "./$types";

export const actions = {
  default: async ({ request, fetch, url }) => {
    const data = await request.formData();
    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: request.headers.get("origin") ?? url.origin,
      },
      body: JSON.stringify({
        ...Object.fromEntries(data),
        user_agent: request.headers.get("user-agent") ?? "",
        app_version: PUBLIC_APP_VERSION,
      }),
    });
    const result = await response.json();
    if (!result.ok) return fail(response.status, { errors: (result.error.fields ?? {}) as Record<string, string[]>, message: String(result.error.message) });
    return { reference: String(result.id) };
  },
} satisfies Actions;

<script lang="ts">
  import { enhance } from "$app/forms";
  import { browserContext, installErrorBuffer } from "#lib/error-buffer.js";
  import type { PageProps } from "./$types";

  let { form }: PageProps = $props();
  $effect(() => installErrorBuffer());
</script>

{#if form?.reference}
  <p role="status">Thanks. Quote {form.reference} if you write to us about it.</p>
{:else}
  <form
    method="POST"
    use:enhance={({ formData }) => {
      for (const [name, value] of Object.entries(browserContext())) formData.set(name, value);
    }}
  >
    <label for="summary">What went wrong?</label>
    <input id="summary" name="summary" required minlength="8" maxlength="140" />
    <label for="steps">What did you do right before?</label>
    <textarea id="steps" name="steps" rows="5" required minlength="20"></textarea>
    <label for="expected">What did you expect to happen?</label>
    <textarea id="expected" name="expected" rows="3"></textarea>
    <fieldset>
      <legend>How much does it block you?</legend>
      <label><input type="radio" name="severity" value="blocker" required /> I can't continue</label>
      <label><input type="radio" name="severity" value="major" /> I found a workaround</label>
      <label><input type="radio" name="severity" value="minor" /> It's cosmetic</label>
    </fieldset>
    <label for="screenshot_url">Link to a screenshot or recording</label>
    <input id="screenshot_url" name="screenshot_url" type="url" />
    <label for="email">Email for follow-up questions</label>
    <input id="email" name="email" type="email" />
    <input name="_gotcha" type="text" tabindex="-1" autocomplete="off" hidden />
    {#if form?.message}
      <p role="alert">{Object.values(form.errors)[0]?.[0] ?? form.message}</p>
    {/if}
    <button>Send report</button>
  </form>
{/if}