From 178a3c4d0e488dba74ab21c2b5686f598dedcc4d Mon Sep 17 00:00:00 2001
From: "P. Reis" <patrickpereirareal1@gmail.com>
Date: Fri, 5 Apr 2024 19:44:12 -0300
Subject: [PATCH] feat: repost functionality

---
 src/app.ts                       |  2 ++
 src/controllers/api/statuses.ts  | 28 +++++++++++++++++++++++++++-
 src/controllers/api/timelines.ts | 13 +++++++++----
 src/views/mastodon/statuses.ts   | 14 +++++++++++++-
 4 files changed, 51 insertions(+), 6 deletions(-)

diff --git a/src/app.ts b/src/app.ts
index 3866760e..743620ad 100644
--- a/src/app.ts
+++ b/src/app.ts
@@ -62,6 +62,7 @@ import {
   favouritedByController,
   pinController,
   rebloggedByController,
+  reblogStatusController,
   statusController,
   unbookmarkController,
   unpinController,
@@ -167,6 +168,7 @@ app.post('/api/v1/statuses/:id{[0-9a-f]{64}}/unbookmark', requirePubkey, unbookm
 app.post('/api/v1/statuses/:id{[0-9a-f]{64}}/pin', requirePubkey, pinController);
 app.post('/api/v1/statuses/:id{[0-9a-f]{64}}/unpin', requirePubkey, unpinController);
 app.post('/api/v1/statuses/:id{[0-9a-f]{64}}/zap', requirePubkey, zapController);
+app.post('/api/v1/statuses/:id{[0-9a-f]{64}}/reblog', requirePubkey, reblogStatusController);
 app.post('/api/v1/statuses', requirePubkey, createStatusController);
 app.delete('/api/v1/statuses/:id{[0-9a-f]{64}}', requirePubkey, deleteStatusController);
 
diff --git a/src/controllers/api/statuses.ts b/src/controllers/api/statuses.ts
index 0b4216e2..7abd3e5b 100644
--- a/src/controllers/api/statuses.ts
+++ b/src/controllers/api/statuses.ts
@@ -7,7 +7,7 @@ import { jsonMetaContentSchema } from '@/schemas/nostr.ts';
 import { addTag, deleteTag } from '@/tags.ts';
 import { createEvent, paginationSchema, parseBody, updateListEvent } from '@/utils/api.ts';
 import { renderEventAccounts } from '@/views.ts';
-import { renderStatus } from '@/views/mastodon/statuses.ts';
+import { renderReblog, renderStatus } from '@/views/mastodon/statuses.ts';
 import { getLnurl } from '@/utils/lnurl.ts';
 
 const createStatusSchema = z.object({
@@ -173,6 +173,31 @@ const favouritedByController: AppController = (c) => {
   return renderEventAccounts(c, [{ kinds: [7], '#e': [id], ...params }]);
 };
 
+/** https://docs.joinmastodon.org/methods/statuses/#boost */
+const reblogStatusController: AppController = async (c) => {
+  const eventId = c.req.param('id');
+
+  const event = await getEvent(eventId, {
+    kind: 1,
+  });
+
+  if (event == undefined) {
+    return c.json({ error: 'Event not found.' }, 404);
+  }
+
+  const tags: string[][] = [['e', event.id], ['p', event.pubkey]];
+
+  const reblogEvent = await createEvent({
+    kind: 6,
+    content: JSON.stringify(event),
+    tags,
+  }, c);
+
+  const status = await renderReblog(reblogEvent, reblogEvent.pubkey);
+
+  return c.json(status);
+};
+
 const rebloggedByController: AppController = (c) => {
   const id = c.req.param('id');
   const params = paginationSchema.parse(c.req.query());
@@ -339,6 +364,7 @@ export {
   favouriteController,
   favouritedByController,
   pinController,
+  reblogStatusController,
   rebloggedByController,
   statusController,
   unbookmarkController,
diff --git a/src/controllers/api/timelines.ts b/src/controllers/api/timelines.ts
index e633ce3d..9dd07397 100644
--- a/src/controllers/api/timelines.ts
+++ b/src/controllers/api/timelines.ts
@@ -7,13 +7,13 @@ import { booleanParamSchema } from '@/schema.ts';
 import { eventsDB } from '@/storages.ts';
 import { hydrateEvents } from '@/storages/hydrate.ts';
 import { paginated, paginationSchema } from '@/utils/api.ts';
-import { renderStatus } from '@/views/mastodon/statuses.ts';
+import { renderReblog, renderStatus } from '@/views/mastodon/statuses.ts';
 
 const homeTimelineController: AppController = async (c) => {
   const params = paginationSchema.parse(c.req.query());
   const pubkey = c.get('pubkey')!;
   const authors = await getFeedPubkeys(pubkey);
-  return renderStatuses(c, [{ authors, kinds: [1], ...params }]);
+  return renderStatuses(c, [{ authors, kinds: [1, 6], ...params }]);
 };
 
 const publicQuerySchema = z.object({
@@ -25,7 +25,7 @@ const publicTimelineController: AppController = (c) => {
   const params = paginationSchema.parse(c.req.query());
   const { local, instance } = publicQuerySchema.parse(c.req.query());
 
-  const filter: NostrFilter = { kinds: [1], ...params };
+  const filter: NostrFilter = { kinds: [1, 6], ...params };
 
   if (local) {
     filter.search = `domain:${Conf.url.host}`;
@@ -56,7 +56,12 @@ async function renderStatuses(c: AppContext, filters: NostrFilter[]) {
     return c.json([]);
   }
 
-  const statuses = await Promise.all(events.map((event) => renderStatus(event, c.get('pubkey'))));
+  const statuses = await Promise.all(events.map((event) => {
+    if (event.kind == 6) {
+      return renderReblog(event, c.get('pubkey'));
+    }
+    return renderStatus(event, c.get('pubkey'));
+  }));
   return paginated(c, events, statuses);
 }
 
diff --git a/src/views/mastodon/statuses.ts b/src/views/mastodon/statuses.ts
index 172a2b6b..408d360a 100644
--- a/src/views/mastodon/statuses.ts
+++ b/src/views/mastodon/statuses.ts
@@ -98,6 +98,18 @@ async function renderStatus(event: DittoEvent, viewerPubkey?: string) {
   };
 }
 
+async function renderReblog(event: DittoEvent, viewerPubkey?: string) {
+  if (event.author == undefined) return;
+
+  const reblog = await renderStatus(JSON.parse(event.content), viewerPubkey);
+  return {
+    id: event.id,
+    account: await renderAccount(event.author),
+    reblogged: true,
+    reblog,
+  };
+}
+
 async function toMention(pubkey: string) {
   const author = await getAuthor(pubkey);
   const account = author ? await renderAccount(author) : undefined;
@@ -134,4 +146,4 @@ function buildInlineRecipients(mentions: Mention[]): string {
   return `<span class="recipients-inline">${elements.join(' ')} </span>`;
 }
 
-export { renderStatus };
+export { renderStatus, renderReblog };