Merge branch 'main' into glitch-soc/merge-upstream

- `.env.production.sample`:
  Our sample config file is very different from upstream since it is much more
  complete. Upstream added documentation for a few env variables.
  Copied the new variables/documentation from upstream.
- `app/lib/feed_manager.rb`:
  Upstream added a timeline type (hashtags), while glitch-soc already had an
  extra one (direct messages). Not really a conflict but textually close
  changes.
  Ported upstream's changes.
- `app/models/custom_emoji.rb`:
  Upstream upped the custom emoji size limit, while glitch-soc had configurable
  limits.
  Upped the default limits accordingly.
- `streaming/index.js`:
  Upstream reworked how hastags were normalized. Minor conflict due to
  glitch-soc's handling of instance-local posts.
  Ported upstream's changes.

app/controllers/api/v1/featured_tags/suggestions_controller.rb

@@ -6,7 +6,7 @@ class Api::V1::FeaturedTags::SuggestionsController < Api::BaseController
   before_action :set_recently_used_tags, only: :index
 
   def index
-    render json: @recently_used_tags, each_serializer: REST::TagSerializer
+    render json: @recently_used_tags, each_serializer: REST::TagSerializer, relationships: TagRelationshipsPresenter.new(@recently_used_tags, current_user&.account_id)
   end
 
   private

app/controllers/api/v1/featured_tags_controller.rb

@@ -13,9 +13,7 @@ class Api::V1::FeaturedTagsController < Api::BaseController
   end
 
   def create
-    @featured_tag = current_account.featured_tags.new(featured_tag_params)
-    @featured_tag.reset_data
-    @featured_tag.save!
+    @featured_tag = current_account.featured_tags.create!(featured_tag_params)
     render json: @featured_tag, serializer: REST::FeaturedTagSerializer
   end
 

app/controllers/api/v1/followed_tags_controller.rb

@@ -0,0 +1,52 @@
+# frozen_string_literal: true
+
+class Api::V1::FollowedTagsController < Api::BaseController
+  TAGS_LIMIT = 100
+
+  before_action -> { doorkeeper_authorize! :follow, :read, :'read:follows' }, except: :show
+  before_action :require_user!
+  before_action :set_results
+
+  after_action :insert_pagination_headers, only: :show
+
+  def index
+    render json: @results.map(&:tag), each_serializer: REST::TagSerializer, relationships: TagRelationshipsPresenter.new(@results.map(&:tag), current_user&.account_id)
+  end
+
+  private
+
+  def set_results
+    @results = TagFollow.where(account: current_account).joins(:tag).eager_load(:tag).to_a_paginated_by_id(
+      limit_param(TAGS_LIMIT),
+      params_slice(:max_id, :since_id, :min_id)
+    )
+  end
+
+  def insert_pagination_headers
+    set_pagination_headers(next_path, prev_path)
+  end
+
+  def next_path
+    api_v1_followed_tags_url pagination_params(max_id: pagination_max_id) if records_continue?
+  end
+
+  def prev_path
+    api_v1_followed_tags_url pagination_params(since_id: pagination_since_id) unless @results.empty?
+  end
+
+  def pagination_max_id
+    @results.last.id
+  end
+
+  def pagination_since_id
+    @results.first.id
+  end
+
+  def records_continue?
+    @results.size == limit_param(TAG_LIMIT)
+  end
+
+  def pagination_params(core_params)
+    params.slice(:limit).permit(:limit).merge(core_params)
+  end
+end

app/controllers/api/v1/tags_controller.rb

@@ -0,0 +1,29 @@
+# frozen_string_literal: true
+
+class Api::V1::TagsController < Api::BaseController
+  before_action -> { doorkeeper_authorize! :follow, :write, :'write:follows' }, except: :show
+  before_action :require_user!, except: :show
+  before_action :set_or_create_tag
+
+  override_rate_limit_headers :follow, family: :follows
+
+  def show
+    render json: @tag, serializer: REST::TagSerializer
+  end
+
+  def follow
+    TagFollow.create!(tag: @tag, account: current_account, rate_limit: true)
+    render json: @tag, serializer: REST::TagSerializer
+  end
+
+  def unfollow
+    TagFollow.find_by(account: current_account, tag: @tag)&.destroy!
+    render json: @tag, serializer: REST::TagSerializer
+  end
+
+  private
+
+  def set_or_create_tag
+    @tag = Tag.find_normalized(params[:id]) || Tag.new(name: Tag.normalize(params[:id]), display_name: params[:id])
+  end
+end

app/controllers/api/v1/trends/tags_controller.rb

@@ -8,7 +8,7 @@ class Api::V1::Trends::TagsController < Api::BaseController
   DEFAULT_TAGS_LIMIT = 10
 
   def index
-    render json: @tags, each_serializer: REST::TagSerializer
+    render json: @tags, each_serializer: REST::TagSerializer, relationships: TagRelationshipsPresenter.new(@tags, current_user&.account_id)
   end
 
   private