mastoapi/activitypub spoof so i can have peak discord embeds :)

src/formatters.nim

@@ -31,8 +31,7 @@ let
   illegalXmlRegex = re"(*UTF8)[^\x09\x0A\x0D\x20-\x{D7FF}\x{E000}-\x{FFFD}\x{10000}-\x{10FFFF}]"
 
 proc getUrlPrefix*(cfg: Config): string =
-  if cfg.useHttps: https & cfg.hostname
+  "https://" & cfg.hostname
-  else: "http://" & cfg.hostname
 
 proc shortLink*(text: string; length=28): string =
   result = text.replace(wwwRegex, "")

src/nitter.nim

@@ -10,7 +10,8 @@ import types, config, prefs, formatters, redis_cache, http_pool
 import views/[general, about]
 import routes/[
   preferences, timeline, status, media, search, list, #rss, debug,
-  unsupported, embed, resolver, router_utils, home, follow, twitter_api]
+  unsupported, embed, resolver, router_utils, home, follow, twitter_api,
+  activityspoof]
 
 const instancesUrl = "https://github.com/zedeus/nitter/wiki/Instances"
 const issuesUrl = "https://github.com/zedeus/nitter/issues"
@@ -51,6 +52,7 @@ createEmbedRouter(cfg)
 #createRssRouter(cfg)
 #createDebugRouter(cfg)
 createTwitterApiRouter(cfg)
+createActivityPubRouter(cfg)
 
 settings:
   port = Port(cfg.port)
@@ -103,5 +105,6 @@ routes:
   extend resolver, ""
   extend embed, ""
   #extend debug, ""
+  extend activityspoof, ""
   extend api, ""
   extend unsupported, ""

src/routes/activityspoof.nim

@@ -0,0 +1,242 @@
+# SPDX-License-Identifier: AGPL-3.0-only
+import json, asyncdispatch, strutils, sequtils, uri, options, sugar, strformat, times
+
+import jester
+
+import router_utils
+import ".."/[types, formatters, api]
+import ../views/[mastoapi]
+
+export json, uri, sequtils, options, sugar, times
+export router_utils
+export api, formatters
+export mastoapi
+
+proc createActivityPubRouter*(cfg: Config) =
+  router activityspoof:
+    get "/api/v1/accounts":
+      resp Http200, {"Content-Type": "application/json"}, """[]"""
+
+    get "/api/v1/statuses/@id":
+      let id = @"id"
+
+      if id.len > 19 or id.any(c => not c.isDigit):
+        resp Http404, {"Content-Type": "application/json"}, """{"error":"Invalid record ID"}"""
+
+      let prefs = cookiePrefs()
+
+      let conv = await getTweet(id)
+      if conv == nil:
+        echo "nil conv"
+
+      if conv == nil or conv.tweet == nil or conv.tweet.id == 0:
+        var error = "Record not found"
+        if conv != nil and conv.tweet != nil and conv.tweet.tombstone.len > 0:
+          error = conv.tweet.tombstone
+
+        var errJson = newJObject()
+        errJson["error"] = %error
+
+        resp Http404, {"Content-Type": "application/json"}, $errJson
+
+      let
+        tweet = conv.tweet
+        tweetUrl = &"{getUrlPrefix(cfg)}/i/status/{id}"
+      var media: seq[JsonNode] = @[]
+
+      if tweet.photos.len > 0:
+        for url in tweet.photos:
+          let image = getUrlPrefix(cfg) & getPicUrl(url)
+          var mediaObj = newJObject()
+
+          mediaObj["id"] = %"150745989836308480" # idk if discord even parses this snowflake, but its my user id why not
+          mediaObj["type"] = %"image"
+          mediaObj["url"] = %image
+          mediaObj["preview_url"] = %image
+          mediaObj["remote_url"] = newJNull()
+          mediaObj["preview_remote_url"] = newJNull()
+          mediaObj["text_url"] = newJNull()
+          mediaObj["description"] = newJNull() # FIXME (not used by discord, i like a11y)
+          # FIXME but this probably isnt used by discord
+          mediaObj["meta"] = newJObject()
+
+          media.add(mediaObj)
+
+      if tweet.video.isSome():
+        let
+          videoObj = get(tweet.video)
+          vars = videoObj.variants.filterIt(it.contentType == mp4)
+        var mediaObj = newJObject()
+
+        mediaObj["id"] = %"150745989836308480"
+        mediaObj["type"] = %"video"
+        mediaObj["url"] = %vars[^1].url
+        mediaObj["preview_url"] = %(getUrlPrefix(cfg) & getPicUrl(videoObj.thumb))
+        mediaObj["remote_url"] = newJNull()
+        mediaObj["preview_remote_url"] = newJNull()
+        mediaObj["text_url"] = newJNull()
+        mediaObj["description"] = newJNull() # FIXME (not used by discord, i like a11y)
+        # FIXME but this probably isnt used by discord
+        mediaObj["meta"] = newJObject()
+
+        media.add(mediaObj)
+      elif tweet.gif.isSome():
+        let gif = get(tweet.gif)
+        var mediaObj = newJObject()
+
+        mediaObj["id"] = %"150745989836308480"
+        mediaObj["type"] = %"video"
+        mediaObj["url"] = %gif.url
+        mediaObj["preview_url"] = %(getUrlPrefix(cfg) & getPicUrl(gif.thumb))
+        mediaObj["remote_url"] = newJNull()
+        mediaObj["preview_remote_url"] = newJNull()
+        mediaObj["text_url"] = newJNull()
+        mediaObj["description"] = newJNull() # FIXME (not used by discord, i like a11y)
+        # FIXME but this probably isnt used by discord
+        mediaObj["meta"] = newJObject()
+
+        media.add(mediaObj)
+
+      var postJson = newJObject()
+      postJson["id"] = %(&"{tweet.id}")
+      postJson["url"] = %tweetUrl
+      postJson["uri"] = %tweetUrl
+      postJson["created_at"] = %($tweet.time)
+      postJson["edited_at"] = newJNull()
+      postJson["reblog"] = newJNull()
+      if tweet.replyId != 0:
+        postJson["in_reply_to_id"] = %(&"{tweet.replyId}")
+        postJson["in_reply_to_account_id"] = %""
+      else:
+        postJson["in_reply_to_id"] = newJNull()
+        postJson["in_reply_to_account_id"] = newJNull()
+      postJson["language"] = %"en" # FIXME
+      postJson["content"] = %formatTweetForMastoAPI(tweet, cfg, prefs)
+      postJson["spoiler_text"] = %""
+      postJson["visibility"] = %"public"
+      postJson["application"] = %*{
+        "name": "Nitter",
+        "website": getUrlPrefix(cfg)
+      }
+      postJson["media_attachments"] = %media
+      postJson["account"] = %*{
+        "id": &"{tweet.user.id}",
+        "display_name": tweet.user.fullname,
+        "username": tweet.user.username,
+        "acct": tweet.user.username,
+        "url": &"{getUrlPrefix(cfg)}/{tweet.user.username}",
+        "uri": &"{getUrlPrefix(cfg)}/{tweet.user.username}",
+        "created_at": $tweet.user.joinDate,
+        "locked": tweet.user.protected,
+        "bot": false, # TODO?
+        "discoverable": true,
+        "indexable": false,
+        "group": false,
+        "avatar": getUrlPrefix(cfg) & getPicUrl(tweet.user.userPic),
+        "avatar_static": getUrlPrefix(cfg) & getPicUrl(tweet.user.userPic),
+        "header": getUrlPrefix(cfg) & getPicUrl(tweet.user.banner),
+        "header_static": getUrlPrefix(cfg) & getPicUrl(tweet.user.banner),
+        "followers_count": tweet.user.followers,
+        "following_count": tweet.user.following,
+        "statuses_count": tweet.user.tweets,
+        "hide_collections": false,
+        "noindex": false,
+        "emojis": @[],
+        "roles": @[],
+        "fields": @[],
+      }
+      postJson["mentions"] = newJArray() # TODO: parse?
+      postJson["tags"] = newJArray() # TODO: parse?
+      postJson["emojis"] = newJArray()
+      postJson["card"] = newJNull()
+      postJson["poll"] = newJNull() # TODO: parse?
+
+      resp Http200, {"Content-Type": "application/json"}, $postJson
+
+    get "/users/@name/statuses/@id":
+      let id = @"id"
+      if request.headers.hasKey("Accept") and request.headers["Accept"] == "application/activity+json":
+        if id.len > 19 or id.any(c => not c.isDigit):
+          resp Http404, {"Content-Type": "application/json"}, """{"error":"Invalid record ID"}"""
+
+        let prefs = cookiePrefs()
+
+        let conv = await getTweet(id)
+        if conv == nil:
+          echo "nil conv"
+
+        if conv == nil or conv.tweet == nil or conv.tweet.id == 0:
+          var error = "Record not found"
+          if conv != nil and conv.tweet != nil and conv.tweet.tombstone.len > 0:
+            error = conv.tweet.tombstone
+
+          var errJson = newJObject()
+          errJson["error"] = %error
+
+          resp Http404, {"Content-Type": "application/json"}, $errJson
+
+        let postJson = getActivityStream(conv.tweet, cfg, prefs)
+
+        resp Http200, {"Content-Type": "application/json"}, $postJson
+
+      redirect("/$1/status/$2" % [@"name", @"id"])
+
+    get "/users/@name":
+      if request.headers.hasKey("Accept") and request.headers["Accept"] == "application/activity+json":
+        let user = await getGraphUser(@"name")
+        if user.suspended or user.id.len == 0:
+          resp Http404, {"Content-Type": "application/json"}, """{"error":"User not found"}"""
+
+        let prefs = cookiePrefs()
+
+        let userJson = getActivityStream(user, cfg, prefs)
+
+        resp Http200, {"Content-Type": "application/json"}, $userJson
+
+      redirect("/" & @"name")
+
+    # might as well
+    get "/.well-known/nodeinfo":
+      var nodeinfo = newJObject()
+      let link: JsonNode = %*{
+        "href": &"{getUrlPrefix(cfg)}/nodeinfo/2.1.json",
+        "rel": "http://nodeinfo.diaspora.software/ns/schema/2.1"
+      }
+      var links: seq[JsonNode] = @[]
+      links.add(link)
+
+      nodeinfo["links"] = %links
+
+      resp Http200, {"Content-Type": "application/json"}, $nodeinfo
+
+    get "/nodeinfo/2.1.json":
+      var nodeinfo = newJObject()
+      nodeinfo["version"] = %"2.1"
+      nodeinfo["software"] = %*{
+        "name": "Nitter",
+        "repository": "https://gitdab.com/Cynosphere/nitter"
+      }
+
+      var metadata = newJObject()
+      metadata["features"] = newJArray()
+      metadata["federation"] = newJObject()
+      metadata["nodeDescription"] = %"Alternative Twitter front-end (ActivityPub support added for Discord)"
+      metadata["nodeName"] = %"Nitter"
+      metadata["private"] = %true
+      metadata["maintainer"] = %*{
+        "name": "Cynthia",
+        "email": "gamers@riseup.net"
+      }
+
+      nodeinfo["metadata"] = metadata
+      nodeinfo["openRegistrations"] = %false
+      nodeinfo["protocols"] = newJArray()
+
+      var services = newJObject()
+      services["inbound"] = newJArray()
+      services["outbound"] = newJArray()
+
+      nodeinfo["services"] = services
+      nodeinfo["usage"] = newJObject()
+
+      resp Http200, {"Content-Type": "application/json"}, $nodeinfo

src/routes/status.nim

@@ -1,16 +1,16 @@
 # SPDX-License-Identifier: AGPL-3.0-only
-import asyncdispatch, strutils, sequtils, uri, options, sugar, strformat
+import json, asyncdispatch, strutils, sequtils, uri, options, sugar, strformat, times
 
 import jester, karax/vdom
 
 import router_utils
 import ".."/[types, formatters, api]
-import ../views/[general, status, search]
+import ../views/[general, status, search, mastoapi]
 
-export uri, sequtils, options, sugar
+export json, uri, sequtils, options, sugar, times
 export router_utils
 export api, formatters
-export status
+export status, mastoapi
 
 proc createStatusRouter*(cfg: Config) =
   router status:
@@ -41,6 +41,30 @@ proc createStatusRouter*(cfg: Config) =
       cond '.' notin @"name"
       let id = @"id"
 
+      if request.headers.hasKey("Accept") and request.headers["Accept"] == "application/activity+json":
+        if id.len > 19 or id.any(c => not c.isDigit):
+          resp Http404, {"Content-Type": "application/json"}, """{"error":"Invalid record ID"}"""
+
+        let prefs = cookiePrefs()
+
+        let conv = await getTweet(id)
+        if conv == nil:
+          echo "nil conv"
+
+        if conv == nil or conv.tweet == nil or conv.tweet.id == 0:
+          var error = "Record not found"
+          if conv != nil and conv.tweet != nil and conv.tweet.tombstone.len > 0:
+            error = conv.tweet.tombstone
+
+          var errJson = newJObject()
+          errJson["error"] = %error
+
+          resp Http404, {"Content-Type": "application/json"}, $errJson
+
+        let postJson = getActivityStream(conv.tweet, cfg, prefs)
+
+        resp Http200, {"Content-Type": "application/json"}, $postJson
+
       if id.len > 19 or id.any(c => not c.isDigit):
         resp Http404, showError("Invalid tweet ID", cfg)
 
@@ -78,8 +102,8 @@ proc createStatusRouter*(cfg: Config) =
         contextUrl = ""
 
       if tweet.quote.isSome():
-        let 
+        let
-          quote = tweet.quote.get()
+          quote = get(tweet.quote)
           quoteUser = quote.user
         if tweet.replyId != 0:
           context = &"↩ Replying to: @{tweet.replyHandle}\n↘ Quoting: {quoteUser.fullname} (@{quoteUser.username})"
@@ -113,7 +137,37 @@ proc createStatusRouter*(cfg: Config) =
       let html = renderConversation(conv, prefs, getPath() & "#m")
       resp renderMain(html, request, cfg, prefs, title, desc, ogTitle,
                       images=images, video=video, avatar=avatar, time=time,
-                      context=context, contextUrl=contextUrl)
+                      context=context, contextUrl=contextUrl, id=id)
+
+    get "/@name/status/@id.mp4":
+      cond '.' notin @"name"
+      let id = @"id"
+
+      if id.len > 19 or id.any(c => not c.isDigit):
+        resp Http404, showError("Invalid tweet ID", cfg)
+
+      let conv = await getTweet(id, getCursor())
+      if conv == nil:
+        echo "nil conv"
+
+      if conv == nil or conv.tweet == nil or conv.tweet.id == 0:
+        var error = "Tweet not found"
+        if conv != nil and conv.tweet != nil and conv.tweet.tombstone.len > 0:
+          error = conv.tweet.tombstone
+        resp Http404, showError(error, cfg)
+
+      let tweet = conv.tweet
+
+      if tweet.video.isSome():
+        let videoObj = get(tweet.video)
+        let vars = videoObj.variants.filterIt(it.contentType == mp4)
+        redirect(vars[^1].url)
+      elif tweet.gif.isSome():
+        let gif = get(tweet.gif)
+        let url = getPicUrl(gif.url)
+        redirect(url)
+
+      redirect("/$1/status/$2" % [@"name", @"id"])
 
     get "/@name/@s/@id/@m/?@i?":
       cond @"s" in ["status", "statuses"]

src/routes/timeline.nim

@@ -1,16 +1,16 @@
 # SPDX-License-Identifier: AGPL-3.0-only
-import asyncdispatch, strutils, sequtils, uri, options, times
+import asyncdispatch, strutils, sequtils, uri, options, times, json
 import jester, karax/vdom
 
 import router_utils
 import ".."/[types, formatters, query, api]
-import ../views/[general, profile, timeline, status, search]
+import ../views/[general, profile, timeline, status, search, mastoapi]
 
 export vdom
-export uri, sequtils
+export uri, sequtils, json
 export router_utils
 export formatters, query, api
-export profile, timeline, status
+export profile, timeline, status, mastoapi
 
 proc getQuery*(request: Request; tab, name: string): Query =
   case tab
@@ -137,6 +137,18 @@ proc createTimelineRouter*(cfg: Config) =
         of "following":
           resp renderMain(renderUserList(await getGraphFollowing(await getUserId(@"name"), getCursor()), prefs), request, cfg, prefs)
         else:
+          if request.headers.hasKey("Accept") and request.headers["Accept"] == "application/activity+json":
+            let userId = await getUserId(@"name")
+
+            if userId == "suspended" or userId.len == 0:
+              resp Http404, {"Content-Type": "application/json"}, """{"error":"User not found"}"""
+
+            let user = await getGraphUser(@"name")
+
+            let userJson = getActivityStream(user, cfg, prefs)
+
+            resp Http200, {"Content-Type": "application/json"}, $userJson
+
           var query = request.getQuery(@"tab", @"name")
           if names.len != 1:
             query.fromUser = names

src/routes/twitter_api.nim

@@ -138,7 +138,7 @@ proc createTwitterApiRouter*(cfg: Config) =
       let response = await getUserProfileJson(username)
       respJson response
 
-    # get "/api/user/@id/tweets":
+    #get "/api/user/@id/tweets":
     #  let id = @"id"
     #  let response = await getUserTweetsJson(id)
     #  respJson response

src/views/general.nim

@@ -3,7 +3,7 @@ import uri, strutils, strformat, times, options
 import karax/[karaxdsl, vdom]
 
 import renderutils
-import ../utils, ../types, ../prefs, ../formatters
+import ".."/[utils, types, prefs, formatters]
 
 import jester
 
@@ -39,7 +39,7 @@ proc renderNavbar(cfg: Config; req: Request; rss, canonical: string): VNode =
 proc renderHead*(prefs: Prefs; cfg: Config; req: Request; titleText=""; desc="";
                  video=""; images: seq[string] = @[]; banner=""; ogTitle="";
                  rss=""; canonical=""; avatar=""; context=""; contextUrl="";
-                 time: Option[DateTime] = none(DateTime)): VNode =
+                 id=""; time: Option[DateTime] = none(DateTime)): VNode =
   var theme = prefs.theme.toTheme
   if "theme" in req.params:
     theme = req.params["theme"].toTheme
@@ -63,8 +63,8 @@ proc renderHead*(prefs: Prefs; cfg: Config; req: Request; titleText=""; desc="";
       link(rel="stylesheet", type="text/css", href=(&"/css/themes/{theme}.css"))
 
     link(rel="apple-touch-icon", sizes="180x180", href="/apple-touch-icon.png")
-    link(rel="icon", type="image/png", sizes="32x32", href="/favicon-32x32.png")
+    link(rel="icon", type="image/png", sizes="32x32", href=(&"{getUrlPrefix(cfg)}/favicon-32x32.png"))
-    link(rel="icon", type="image/png", sizes="16x16", href="/favicon-16x16.png")
+    link(rel="icon", type="image/png", sizes="16x16", href=(&"{getUrlPrefix(cfg)}/favicon-16x16.png"))
     link(rel="manifest", href="/site.webmanifest")
     link(rel="mask-icon", href="/safari-pinned-tab.svg", color="#ff6c60")
     link(rel="search", type="application/opensearchdescription+xml", title=cfg.title,
@@ -104,13 +104,15 @@ proc renderHead*(prefs: Prefs; cfg: Config; req: Request; titleText=""; desc="";
 
     var siteName = "Nitter"
 
-    if time.isSome:
+    #let isDiscord = req.headers.hasKey("User-Agent") and req.headers["User-Agent"].contains("Discordbot")
-      let timeObj = time.get
-      let timeStr = $timeObj
-      meta(property="og:article:published_time", content=timeStr)
 
-      let formattedTime = timeObj.format("yyyy/MM/dd HH:mm:ss")
+    #if time.isSome and not isDiscord:
-      siteName = &"Nitter • {formattedTime}"
+    #  let timeObj = time.get
+    #  let timeStr = $timeObj
+    #  meta(property="og:article:published_time", content=timeStr)
+    #
+    #  let formattedTime = timeObj.format("yyyy/MM/dd HH:mm:ss")
+    #  siteName = &"Nitter • {formattedTime}"
 
     meta(property="og:site_name", content=siteName)
 
@@ -155,12 +157,14 @@ proc renderHead*(prefs: Prefs; cfg: Config; req: Request; titleText=""; desc="";
       if contextUrl != "":
         url = contextUrl
 
-      verbatim &"<link rel=\"alternate\" href=\"{getUrlPrefix(cfg)}/oembed.json?type=video&provider={encodeUrl(siteName)}&title={title}&user={author}&url={encodeUrl(url)}\" type=\"application/json+oembed\" />"
+      link(rel="alternate", href=(&"{getUrlPrefix(cfg)}/oembed.json?type=video&provider={encodeUrl(siteName)}&title={title}&user={author}&url={encodeUrl(url)}"), type="application/json+oembed")
     elif context != "" and contextUrl != "":
       var
         title = encodeUrl(finalizedTitleText)
         author = encodeUrl(context)
-      verbatim &"<link rel=\"alternate\" href=\"{getUrlPrefix(cfg)}/oembed.json?type=video&provider={encodeUrl(siteName)}&title={title}&user={author}&url={encodeUrl(contextUrl)}\" type=\"application/json+oembed\" />"
+      link(rel="alternate", href=(&"{getUrlPrefix(cfg)}/oembed.json?type=video&provider={encodeUrl(siteName)}&title={title}&user={author}&url={encodeUrl(contextUrl)}"), type="application/json+oembed")
+
+    link(rel="alternate", href=(&"{getUrlPrefix(cfg)}/users/i/statuses/{id}"), type="application/activity+json")
 
     # this is last so images are also preloaded
     # if this is done earlier, Chrome only preloads one image for some reason
@@ -170,14 +174,14 @@ proc renderHead*(prefs: Prefs; cfg: Config; req: Request; titleText=""; desc="";
 proc renderMain*(body: VNode; req: Request; cfg: Config; prefs=defaultPrefs;
                  titleText=""; desc=""; ogTitle=""; rss=""; video="";
                  images: seq[string] = @[]; banner=""; avatar=""; context="";
-                 contextUrl = ""; time: Option[DateTime] = none(DateTime)
+                 contextUrl=""; id=""; time: Option[DateTime] = none(DateTime)
                  ): string =
 
   let canonical = getTwitterLink(req.path, req.params)
 
   let node = buildHtml(html(lang="en")):
     renderHead(prefs, cfg, req, titleText, desc, video, images, banner, ogTitle,
-               rss, canonical, avatar, context, contextUrl, time)
+               rss, canonical, avatar, context, contextUrl, id, time)
 
     body:
       renderNavbar(cfg, req, rss, canonical)

src/views/mastoapi.nim

@@ -0,0 +1,178 @@
+# SPDX-License-Identifier: AGPL-3.0-only
+import strutils, strformat, options, json, sequtils, times
+import ".."/[types, formatters, utils]
+
+proc formatTweetForMastoAPI*(tweet: Tweet, cfg: Config, prefs: Prefs): string =
+  var content = replaceUrls(tweet.text, prefs)
+
+  if tweet.quote.isSome():
+    let
+      quote = get(tweet.quote)
+      quoteContent = replaceUrls(quote.text, prefs)
+      quoteUrl = &"{getUrlPrefix(cfg)}/i/status/{quote.id}"
+    content &= &"\n\n<blockquote><b>↘ <a href=\"{quoteUrl}\">{quote.user.fullName} (@{quote.user.username})</a></b>\n{quoteContent}"
+
+    if quote.video.isSome() or tweet.gif.isSome():
+      content &= "\n📹"
+      if tweet.gif.isSome():
+        content &= " (GIF)"
+    elif tweet.photos.len > 0:
+      content &= "\n🖼️"
+      if tweet.photos.len > 1:
+        content &= &" ({tweet.photos.len})"
+
+    content &= "</blockquote>"
+
+  if tweet.birdwatch.isSome():
+    let
+      note = get(tweet.birdwatch)
+      noteContent = replaceUrls(note.text, prefs)
+    content &= &"\n<blockquote><b>ⓘ {note.title}</b>\n{noteContent}</blockquote>"
+
+  result = content.replace("\n", "<br>")
+
+proc getActivityStream*(tweet: Tweet, cfg: Config, prefs: Prefs): JsonNode =
+  let
+    tweetUrl = &"{getUrlPrefix(cfg)}/i/status/{tweet.id}"
+    tweetContent = formatTweetForMastoAPI(tweet, cfg, prefs)
+  var media: seq[JsonNode] = @[]
+
+  if tweet.photos.len > 0:
+    for url in tweet.photos:
+      let image = getUrlPrefix(cfg) & getPicUrl(url)
+      var mediaObj = newJObject()
+
+      mediaObj["type"] = %"Document"
+      mediaObj["mediaType"] = %"image/png"
+      mediaObj["url"] = %image
+      mediaObj["name"] = newJNull() # FIXME a11y
+
+      media.add(mediaObj)
+
+  if tweet.video.isSome():
+    let
+      videoObj = get(tweet.video)
+      vars = videoObj.variants.filterIt(it.contentType == mp4)
+    var mediaObj = newJObject()
+
+    mediaObj["type"] = %"Document"
+    mediaObj["mediaType"] = %"video/mp4"
+    mediaObj["url"] = %vars[^1].url
+    mediaObj["name"] = newJNull() # FIXME a11y
+
+    media.add(mediaObj)
+  elif tweet.gif.isSome():
+    let gif = get(tweet.gif)
+    var mediaObj = newJObject()
+
+    mediaObj["type"] = %"Document"
+    mediaObj["mediaType"] = %"video/mp4"
+    mediaObj["url"] = %gif.url
+    mediaObj["name"] = newJNull() # FIXME a11y
+
+    media.add(mediaObj)
+
+  var context: seq[JsonNode] = @[]
+  let contextUrl: JsonNode = %"https://www.w3.org/ns/activitystreams"
+  context.add(contextUrl)
+  let asProps: JsonNode = %*{
+    "ostatus": "http://ostatus.org#",
+    "atomUri": "ostatus:atomUri",
+    "inReplyToAtomUri": "ostatus:inReplyToAtomUri",
+    "conversation": "ostatus:conversation",
+    "sensitive": "as:sensitive",
+  }
+  context.add(asProps)
+
+  var postJson = newJObject()
+  postJson["@context"] = %context
+  postJson["id"] = %tweetUrl
+  postJson["type"] = %"Note"
+  postJson["summary"] = newJNull()
+  if tweet.replyId != 0:
+    let replyUrl = &"{getUrlPrefix(cfg)}/i/status/{tweet.replyId}"
+    postJson["inReplyTo"] = %replyUrl
+    postJson["inReplyToAtomUri"] = %replyUrl
+  else:
+    postJson["inReplyTo"] = newJNull()
+    postJson["inReplyToAtomUri"] = newJNull()
+  postJson["published"] = %($tweet.time)
+  postJson["url"] = %tweetUrl
+  postJson["attributedTo"] = %(&"{getUrlPrefix(cfg)}/users/{tweet.user.username}")
+  postJson["to"] = newJArray()
+  postJson["cc"] = %(@["https://www.w3.org/ns/activitystreams#Public"])
+  postJson["sensitive"] = %false # FIXME
+  postJson["atomUri"] = %tweetUrl
+  postJson["conversation"] = %""
+  postJson["content"] = %tweetContent
+  postJson["contentMap"] = %*{
+    "en": tweetContent
+  }
+  postJson["attachment"] = %media
+  postJson["tag"] = newJArray() # TODO: parse?
+  postJson["replies"] = newJObject()
+
+  result = postJson
+
+proc getActivityStream*(user: User, cfg: Config, prefs: Prefs): JsonNode =
+  let userUrl = &"{getUrlPrefix(cfg)}/{user.username}"
+
+  var context: seq[JsonNode] = @[]
+  let contextUrl: JsonNode = %"https://www.w3.org/ns/activitystreams"
+  context.add(contextUrl)
+  let contextUrl2: JsonNode = %"https://w3id.org/security/v1"
+  context.add(contextUrl2)
+
+  let contextAka: JsonNode = %*{
+    "@id": "as:alsoKnownAs",
+    "@type": "@id"
+  }
+  let contextMovedTo = %*{
+    "@id": "as:movedTo",
+    "@type": "@id"
+  }
+  var asProps: JsonNode = %*{
+    "manuallyApprovesFollowers": "as:manuallyApprovesFollowers",
+    "schema": "http://schema.org#",
+    "PropertyValue": "schema:PropertyValue",
+    "value": "schema:value",
+  }
+  asProps["alsoKnownAs"] = contextAka
+  asProps["movedTo"] = contextMovedTo
+  context.add(asProps)
+
+  var userJson = newJObject()
+  userJson["@context"] = %context
+  userJson["id"] = %userUrl
+  userJson["type"] = %"Person"
+  userJson["following"] = %(userUrl & "/following")
+  userJson["followers"] = %(userUrl & "/followers")
+  userJson["inbox"] = newJNull()
+  userJson["outbox"] = newJNull()
+  userJson["featured"] = newJNull()
+  userJson["featuredTags"] = newJNull()
+  userJson["preferredUsername"] = %user.username
+  userJson["name"] = %user.fullname
+  userJson["summary"] = %user.bio
+  userJson["url"] = %userUrl
+  userJson["manuallyApprovesFollowers"] = %user.protected
+  userJson["discoverable"] = %true
+  userJson["indexable"] = %false
+  userJson["published"] = %($user.joinDate)
+  userJson["memorial"] = %false
+  userJson["publicKey"] = newJNull()
+  userJson["tag"] = newJArray()
+  userJson["attachment"] = newJArray()
+  userJson["endpoints"] = newJObject()
+  userJson["icon"] = %*{
+    "type": "Image",
+    "mediaType": "image/jpeg",
+    "url":  getUrlPrefix(cfg) & getPicUrl(user.userPic)
+  }
+  userJson["image"] = %*{
+    "type": "Image",
+    "mediaType": "image/jpeg",
+    "url":  getUrlPrefix(cfg) & getPicUrl(user.banner)
+  }
+
+  result = userJson

src/views/tweet.nim

@@ -351,7 +351,7 @@ proc renderTweet*(tweet: Tweet; prefs: Prefs; path: string; class=""; index=0;
       if tweet.quote.isSome:
         renderQuote(tweet.quote.get(), prefs, path)
 
-      if mainTweet and tweet.birdwatch.isSome:
+      if tweet.birdwatch.isSome:
         renderCommunityNote(tweet.birdwatch.get(), prefs)
 
       if mainTweet: