From 5b7c3a1d5e68765825111eb675929378bcef71a3 Mon Sep 17 00:00:00 2001
From: Alex Gleason <alex@alexgleason.me>
Date: Mon, 1 Jan 2024 12:43:53 -0600
Subject: [PATCH] Support GET /api/v1/blocks

---
 src/app.ts                      |  3 ++-
 src/controllers/api/accounts.ts | 12 +++---------
 src/controllers/api/blocks.ts   | 22 ++++++++++++++++++++++
 src/views.ts                    | 13 ++++++++++++-
 4 files changed, 39 insertions(+), 11 deletions(-)
 create mode 100644 src/controllers/api/blocks.ts

diff --git a/src/app.ts b/src/app.ts
index e637cb4..59ee717 100644
--- a/src/app.ts
+++ b/src/app.ts
@@ -34,6 +34,7 @@ import {
   verifyCredentialsController,
 } from './controllers/api/accounts.ts';
 import { appCredentialsController, createAppController } from './controllers/api/apps.ts';
+import { blocksController } from './controllers/api/blocks.ts';
 import { emptyArrayController, emptyObjectController, notImplementedController } from './controllers/api/fallback.ts';
 import { instanceController } from './controllers/api/instance.ts';
 import { mediaController } from './controllers/api/media.ts';
@@ -168,6 +169,7 @@ app.get('/api/v1/trends', cache({ cacheName: 'web', expires: Time.minutes(15) })
 
 app.get('/api/v1/notifications', requirePubkey, notificationsController);
 app.get('/api/v1/favourites', requirePubkey, favouritesController);
+app.get('/api/v1/blocks', requirePubkey, blocksController);
 
 app.post('/api/v1/pleroma/admin/config', requireRole('admin'), updateConfigController);
 
@@ -175,7 +177,6 @@ app.post('/api/v1/pleroma/admin/config', requireRole('admin'), updateConfigContr
 app.get('/api/v1/bookmarks', emptyArrayController);
 app.get('/api/v1/custom_emojis', emptyArrayController);
 app.get('/api/v1/filters', emptyArrayController);
-app.get('/api/v1/blocks', emptyArrayController);
 app.get('/api/v1/mutes', emptyArrayController);
 app.get('/api/v1/domain_blocks', emptyArrayController);
 app.get('/api/v1/markers', emptyObjectController);
diff --git a/src/controllers/api/accounts.ts b/src/controllers/api/accounts.ts
index 9e1acc8..7486b02 100644
--- a/src/controllers/api/accounts.ts
+++ b/src/controllers/api/accounts.ts
@@ -12,7 +12,7 @@ import { uploadFile } from '@/upload.ts';
 import { lookupAccount, nostrNow } from '@/utils.ts';
 import { paginated, paginationSchema, parseBody, updateListEvent } from '@/utils/web.ts';
 import { createEvent } from '@/utils/web.ts';
-import { renderEventAccounts } from '@/views.ts';
+import { renderAccounts, renderEventAccounts } from '@/views.ts';
 import { accountFromPubkey, renderAccount } from '@/views/mastodon/accounts.ts';
 import { renderRelationship } from '@/views/mastodon/relationships.ts';
 import { renderStatus } from '@/views/mastodon/statuses.ts';
@@ -236,16 +236,10 @@ const followersController: AppController = (c) => {
 const followingController: AppController = async (c) => {
   const pubkey = c.req.param('pubkey');
   const pubkeys = await getFollowedPubkeys(pubkey);
-
-  // TODO: pagination by offset.
-  const accounts = await Promise.all(pubkeys.map(async (pubkey) => {
-    const event = await getAuthor(pubkey);
-    return event ? await renderAccount(event) : undefined;
-  }));
-
-  return c.json(accounts.filter(Boolean));
+  return renderAccounts(c, pubkeys);
 };
 
+/** https://docs.joinmastodon.org/methods/accounts/#block */
 const blockController: AppController = async (c) => {
   const sourcePubkey = c.get('pubkey')!;
   const targetPubkey = c.req.param('pubkey');
diff --git a/src/controllers/api/blocks.ts b/src/controllers/api/blocks.ts
new file mode 100644
index 0000000..2ff4f3e
--- /dev/null
+++ b/src/controllers/api/blocks.ts
@@ -0,0 +1,22 @@
+import { type AppController } from '@/app.ts';
+import { eventsDB } from '@/db/events.ts';
+import { getTagSet } from '@/tags.ts';
+import { renderAccounts } from '@/views.ts';
+
+/** https://docs.joinmastodon.org/methods/blocks/#get */
+const blocksController: AppController = async (c) => {
+  const pubkey = c.get('pubkey')!;
+
+  const [event10000] = await eventsDB.getEvents([
+    { kinds: [10000], authors: [pubkey], limit: 1 },
+  ]);
+
+  if (event10000) {
+    const pubkeys = getTagSet(event10000.tags, 'p');
+    return renderAccounts(c, [...pubkeys].reverse());
+  } else {
+    return c.json([]);
+  }
+};
+
+export { blocksController };
diff --git a/src/views.ts b/src/views.ts
index 95a998e..5988689 100644
--- a/src/views.ts
+++ b/src/views.ts
@@ -24,4 +24,15 @@ async function renderEventAccounts(c: AppContext, filters: Filter[]) {
   return paginated(c, events, accounts);
 }
 
-export { renderEventAccounts };
+async function renderAccounts(c: AppContext, pubkeys: string[]) {
+  // TODO: pagination by offset.
+  // FIXME: this is very inefficient!
+  const accounts = await Promise.all(pubkeys.map(async (pubkey) => {
+    const event = await getAuthor(pubkey);
+    return event ? await renderAccount(event) : undefined;
+  }));
+
+  return c.json(accounts.filter(Boolean));
+}
+
+export { renderAccounts, renderEventAccounts };