disable archives

it has come to my attention while investigating #263 that tweet archives
as forget supports them are no longer a thing. this commit disables all
front-facing archive support and puts a banner above the form

assets/settings.js

@@ -1,5 +1,4 @@
 import Banner from '../components/Banner.html';
-import ArchiveForm from '../components/ArchiveForm.html';
 import {known_load, known_save} from './known_instances.js'
 
 (function settings_init(){
@@ -195,19 +194,6 @@ import {known_load, known_save} from './known_instances.js'
         })
     }
 
-    let archive_form_el = document.querySelector('#archive-form');
-    if(archive_form_el){
-        let csrf_token = archive_form_el.querySelector('input[name=csrf-token]').value;
-        let archive_form = new ArchiveForm({
-            target: archive_form_el,
-            hydrate: true,
-            data: {
-                action: archive_form_el.action,
-                csrf_token: csrf_token,
-            },
-        })
-    }
-
     function bump_instance(instance_name){
         let known_instances = known_load();
         let found = false;

components/ArchiveForm.html

@@ -1,38 +0,0 @@
-<form action={action} method='post' enctype='multipart/form-data'>
-    {#if file_too_big}
-        <div class="banner warning">
-            <p>The file you have selected is very large.</p>
-
-            <p>Twitter has two types of archives, <b>Forget does not support
-                "Your Twitter data" archives, only "Tweet archives"</b>
-            available from
-            <a href="https://twitter.com/settings/account#export_request">your account settings</a>.
-            Please make sure you have the right type of archive.</p>
-        </div>
-    {/if}
-    <input type="file" name="file" accept="application/zip,.zip"
-        on:change={take_file(this.files)}>
-    <input type="submit" value="Upload">
-    <input type='hidden' name='csrf-token' value={csrf_token}>
-</form>
-
-<script>
-export let csrf_token, action;
-
-function get_file_size(file_list){
-    /* returns size of selected file given an <input type="file">
-        or 0 if no file is selected */
-    let size = 0;
-    for(let i = 0; i < file_list.length; i++){
-        size += file_list[i].size;
-    }
-    return size;
-}
-
-function take_file(file_list){
-    file_size: get_file_size(file_list);
-}
-
-let file_size = 0;
-$: file_too_big = file_size > 10000000; // 10 MB
-</script>

routes/__init__.py

@@ -93,38 +93,9 @@ def twitter_login_step2():
                 url_for('about', twitter_login_error='', _anchor='log_in'))
 
 
-class TweetArchiveEmptyException(Exception):
-    pass
-
-
 @app.route('/upload_tweet_archive', methods=('POST',))
-@require_auth
 def upload_tweet_archive():
-    ta = TwitterArchive(
-            account=g.viewer.account,
-            body=request.files['file'].read())
-    db.session.add(ta)
-    db.session.commit()
-
-    try:
-        files = libforget.twitter.chunk_twitter_archive(ta.id)
-
-        ta.chunks = len(files)
-        db.session.commit()
-
-        if not ta.chunks > 0:
-            raise TweetArchiveEmptyException()
-
-        for filename in files:
-            tasks.import_twitter_archive_month.s(ta.id, filename).apply_async()
-
-        return redirect(url_for('index', _anchor='recent_archives'))
-    except (BadZipFile, TweetArchiveEmptyException):
-        if sentry:
-            sentry.captureException()
-        return redirect(
-                url_for('index', tweet_archive_failed='',
-                        _anchor='tweet_archive_import'))
+    return 403, 'Tweet archive support is temporarily disabled, see banner on the front page.'
 
 
 @app.route('/settings', methods=('POST',))

templates/logged_in.html

@@ -148,8 +148,10 @@
     <div class="banner error">The file you uploaded is not a valid tweet archive. No posts have been imported.</div>
     {% endif %}
 
+    <div class="banner warning">Archive imports are temporarily disabled. The tweet archive format has been quietly dropped by Twitter and replaced by a more comprehensive data archive format. Support for this format will come soon.</div>
+
     <form action='{{url_for('upload_tweet_archive')}}' method='post' enctype='multipart/form-data' id='archive-form'>
-        <input type="file" name='file' accept='application/zip,.zip'><input type="submit" value="Upload">
+        <input disabled type="file" name='file' accept='application/zip,.zip'><input disabled type="submit" value="Upload">
         <input type='hidden' name='csrf-token' value='{{g.viewer.csrf_token}}'>
     </form>