pinafore/routes/settings/instances/add.html

<:Head>
  <title>Add an Instance</title>
</:Head>

<Layout page='settings'>
  <SettingsLayout page='settings/instances/add' label="Add an Instance">
    <h1 id="add-an-instance-h1">Add an Instance</h1>

    <LoadingMask show="{{$logInToInstanceLoading}}"/>

    {{#if $isUserLoggedIn}}
    <p>Connect to an instance to log in.</p>
    {{else}}
    <p>Log in to an instance to start using Pinafore.</p>
    {{/if}}

    <form class="add-new-instance" on:submit='onSubmit(event)' aria-labelledby="add-an-instance-h1">

      {{#if $logInToInstanceError}}
      <div class="form-error" role="alert">
        Error: {{$logInToInstanceError}}
      </div>
      {{/if}}

      <label for="instanceInput">Instance:</label>
      <input class="new-instance-input" type="text" id="instanceInput"
             bind:value='$instanceNameInSearch' placeholder='' required
      >
      <button class="primary" type="submit" id="submitButton" disabled="{{!$instanceNameInSearch}}">Add instance</button>
    </form>

    {{#if !$isUserLoggedIn}}
    <p>Don't have an instance? <a rel="noopener" target="_blank" href="https://joinmastodon.org">Join Mastodon!</a></p>
    {{/if}}
  </SettingsLayout>
</Layout>
<style>
  .form-error {
    border: 2px solid red;
    border-radius: 2px;
    padding: 10px;
    font-size: 1.3em;
    margin: 5px;
    background-color: var(--main-bg);
  }
  input.new-instance-input {
    min-width: 50%;
    max-width: 100%;
  }

  form.add-new-instance {
    background: var(--form-bg);
    padding: 5px 10px 15px;
    margin: 20px auto;
    border: 1px solid var(--form-border);
    border-radius: 4px;
  }

  form.add-new-instance label, form.add-new-instance input, form.add-new-instance button {
    display: block;
    margin: 20px 5px;
  }

  @media (max-width: 767px) {
    input.new-instance-input {
      max-width: 80%;
    }
  }
</style>
<script>
  import Layout from '../../_components/Layout.html';
  import SettingsLayout from '../_components/SettingsLayout.html'
  import { store } from '../../_store/store'
  import LoadingMask from '../../_components/LoadingMask'
  import { logInToInstance, handleOauthCode } from './_actions/add'

  export default {
    async oncreate () {
      let params = new URLSearchParams(location.search)
      if (params.has('code')) {
        handleOauthCode(params.get('code'))
      }
    },
    components: {
      Layout,
      SettingsLayout,
      LoadingMask
    },
    store: () => store,
    methods: {
      onSubmit(event) {
        event.preventDefault()
        logInToInstance()
      }
    }
  }
</script>