---
import OtpDialog from "../components/OtpDialog.astro";
import Page from "../layouts/Page.astro";
---

<Page title="Contact" description="Contact Joe Carstairs">
  <OtpDialog />

  <form class="contact-form">
    <h1>Contact me</h1>
    <p hidden class="error"/>
    <label for="name">Name</label>
    <input id="name" name="name" type="text" required>
    <label for="email">Email</label>
    <input id="email" name="email" type="email" required>
    <label for="message">Message</label>
    <textarea id="message" name="message" required></textarea>
    <input type="submit" value="Send">
  </form>

  <section class="success" hidden="true">
    <h1>You sent me a message!</h1>
    <p>Thanks for that. I may be in touch.</p>
    <p>In case you forgot, your message was this:</p>
    <hr>
    <dl>
      <dt>Name</dt> <dd class="sentname">???</dd>
      <dt>Email</dt> <dd class="sentemail">???</dd>
      <dt>Message</dt> <dd class="sentmessage">???</dd>
    </dl>
  </section>

  <script>
    import { resendOtp } from '../scripts/contact/resend-otp';
    import { submitContactForm } from '../scripts/contact/submit-contact-form';
    import { submitOtpForm } from '../scripts/contact/submit-otp-form';
    import type { Selectors } from '../scripts/contact/selectors';

    function locateOrPanic<T extends Element>(selector: string, desc: string, root?: Element): T {
      const elem = (root ?? document).querySelector<T>(selector);
      if (!elem) {
        alert(`Technical error: could not locate ${desc}. Please let Joe know if you have another means of contacting him.`);
        throw new Error(`Could not locate ${desc}`);
      }
      return elem;
    }

    const contactForm = locateOrPanic<HTMLFormElement>('form.contact-form', 'contact form');
    const otpDialog = locateOrPanic<HTMLDialogElement>('dialog.otp-dialog', 'OTP dialog');
    const otpForm = locateOrPanic<HTMLFormElement>('form.otp-form', 'OTP form');
    const successSection = document.querySelector('section.success');
    let resendButtonInterval: undefined | NodeJS.Timeout = undefined;

    const selectors: Selectors = {
      contactForm: {
        emailElem: () => locateOrPanic<HTMLInputElement>('input[name="email"]', 'email input', contactForm),
        errorElem: () => contactForm.querySelector('.error'),
        nameElem: () => locateOrPanic<HTMLInputElement>('input[name="name"]', 'name input', contactForm),
        messageElem: () => locateOrPanic<HTMLTextAreaElement>('textarea[name="message"]', 'message textarea', contactForm),
        self: () => contactForm,
        submitButton: () => contactForm.querySelector('input[type="submit"]'),
      },
      otpDialog: {
        allOtpInputs: () => otpForm.querySelectorAll('input:not([type="submit"])'),
        errorElem: () => otpDialog.querySelector('.error'),
        firstOtpInput: () => otpForm.querySelector('input:not([type="submit"]):first-child'),
        otpForm: () => otpForm,
        otpRecipient: () => otpDialog.querySelector('.otp-recipient'),
        otpValidUntil: () => otpDialog.querySelector('.otp-valid-until'),
        resendButton: () => otpDialog.querySelector<HTMLButtonElement>('button.resend-button'),
        self: () => otpDialog,
        submitButton: () => otpForm.querySelector('input[type="submit"]'),
      },
      successSection: {
        email: () => successSection?.querySelector('.sentemail') ?? null,
        name: () => successSection?.querySelector('.sentname') ?? null,
        message: () => successSection?.querySelector('.sentmessage') ?? null,
        self: () => successSection,
      }
    };

    contactForm.addEventListener('submit', async (event) => {
      event.preventDefault();
      ({ resendButtonInterval } = await submitContactForm(selectors, resendButtonInterval));
    });

    selectors.otpDialog.resendButton()?.addEventListener('click', async () => {
      ({ resendButtonInterval } = await resendOtp(selectors, resendButtonInterval));
    });

    otpForm.addEventListener('submit', async (event) => {
      event.preventDefault();
      await submitOtpForm(selectors);
    });
  </script>
</Page>