Fix `tootctl feeds build` not building list timelines (#33783)

app/lib/feed_manager.rb

@@ -301,6 +301,38 @@ class FeedManager
     end
   end
 
+  # Populate list feed of account from scratch
+  # @param [List] list
+  # @return [void]
+  def populate_list(list)
+    limit        = FeedManager::MAX_ITEMS / 2
+    aggregate    = list.account.user&.aggregates_reblogs?
+    timeline_key = key(:list, list.id)
+
+    list.active_accounts.includes(:account_stat).reorder(nil).find_each do |target_account|
+      if redis.zcard(timeline_key) >= limit
+        oldest_home_score = redis.zrange(timeline_key, 0, 0, with_scores: true).first.last.to_i
+        last_status_score = Mastodon::Snowflake.id_at(target_account.last_status_at)
+
+        # If the feed is full and this account has not posted more recently
+        # than the last item on the feed, then we can skip the whole account
+        # because none of its statuses would stay on the feed anyway
+        next if last_status_score < oldest_home_score
+      end
+
+      statuses = target_account.statuses.list_eligible_visibility.includes(:preloadable_poll, :media_attachments, :account, reblog: :account).limit(limit)
+      crutches = build_crutches(list.account_id, statuses)
+
+      statuses.each do |status|
+        next if filter_from_home(status, list.account_id, crutches) || filter_from_list?(status, list)
+
+        add_to_feed(:list, list.id, status, aggregate_reblogs: aggregate)
+      end
+
+      trim(:list, list.id)
+    end
+  end
+
   # Completely clear multiple feeds at once
   # @param [Symbol] type
   # @param [Array<Integer>] ids

app/models/list.rb

@@ -24,6 +24,7 @@ class List < ApplicationRecord
 
   has_many :list_accounts, inverse_of: :list, dependent: :destroy
   has_many :accounts, through: :list_accounts
+  has_many :active_accounts, -> { merge(ListAccount.active) }, through: :list_accounts, source: :account
 
   validates :title, presence: true
 

app/models/list_account.rb

@@ -20,6 +20,8 @@ class ListAccount < ApplicationRecord
   validates :account_id, uniqueness: { scope: :list_id }
   validate :validate_relationship
 
+  scope :active, -> { where.not(follow_id: nil) }
+
   before_validation :set_follow, unless: :list_owner_account_is_account?
 
   private

app/services/precompute_feed_service.rb

@@ -5,6 +5,10 @@ class PrecomputeFeedService < BaseService
 
   def call(account)
     FeedManager.instance.populate_home(account)
+
+    account.owned_lists.each do |list|
+      FeedManager.instance.populate_list(list)
+    end
   ensure
     redis.del("account:#{account.id}:regeneration")
   end

spec/services/precompute_feed_service_spec.rb

@@ -7,31 +7,69 @@ RSpec.describe PrecomputeFeedService do
 
   describe 'call' do
     let(:account) { Fabricate(:account) }
+    let!(:list) { Fabricate(:list, account: account, exclusive: false) }
 
-    it 'fills a user timeline with statuses' do
-      account = Fabricate(:account)
-      status = Fabricate(:status, account: account)
+    context 'when no eligible status exist' do
+      it 'raises no error and results in an empty timeline' do
+        expect { subject.call(account) }.to_not raise_error
 
-      subject.call(account)
-
-      expect(redis.zscore(FeedManager.instance.key(:home, account.id), status.id)).to be_within(0.1).of(status.id.to_f)
+        expect(redis.zcard(FeedManager.instance.key(:home, account.id))).to eq(0)
+      end
     end
 
-    it 'does not raise an error even if it could not find any status' do
-      account = Fabricate(:account)
-      expect { subject.call(account) }.to_not raise_error
-    end
+    context 'with eligible statuses' do
+      let(:muted_account) { Fabricate(:account) }
+      let!(:followed_account) { Fabricate(:account) }
+      let!(:requested_account) { Fabricate(:account) }
+      let!(:own_status) { Fabricate(:status, account: account) }
+      let!(:followed_status) { Fabricate(:status, account: followed_account) }
+      let!(:unreadable_dm_from_followed) { Fabricate(:status, account: followed_account, visibility: :direct) }
+      let!(:requested_status) { Fabricate(:status, account: requested_account) }
+      let!(:muted_status) { Fabricate(:status, account: muted_account) }
+      let!(:muted_reblog) { Fabricate(:status, account: followed_account, reblog: muted_status) }
+      let!(:known_reply) { Fabricate(:status, account: followed_account, in_reply_to_id: own_status.id) }
+      let!(:unknown_reply) { Fabricate(:status, account: followed_account, in_reply_to_id: requested_status.id) }
+
+      before do
+        account.follow!(followed_account)
+        account.request_follow!(requested_account)
+        account.mute!(muted_account)
+
+        list.accounts << followed_account
+      end
+
+      it "fills a user's home and list timelines with the expected posts" do
+        subject.call(account)
+
+        home_timeline_ids = redis.zrevrangebyscore(FeedManager.instance.key(:home, account.id), '(+inf', '(-inf', limit: [0, 30], with_scores: true).map { |id| id.first.to_i }
+        list_timeline_ids = redis.zrevrangebyscore(FeedManager.instance.key(:list, list.id), '(+inf', '(-inf', limit: [0, 30], with_scores: true).map { |id| id.first.to_i }
+
+        expect(home_timeline_ids).to include(
+          own_status.id,
+          followed_status.id,
+          known_reply.id
+        )
 
-    it 'filters statuses' do
-      account = Fabricate(:account)
-      muted_account = Fabricate(:account)
-      Fabricate(:mute, account: account, target_account: muted_account)
-      reblog = Fabricate(:status, account: muted_account)
-      Fabricate(:status, account: account, reblog: reblog)
+        expect(list_timeline_ids).to include(
+          followed_status.id
+        )
 
-      subject.call(account)
+        expect(home_timeline_ids).to_not include(
+          requested_status.id,
+          unknown_reply.id,
+          unreadable_dm_from_followed.id,
+          muted_status.id,
+          muted_reblog.id
+        )
 
-      expect(redis.zscore(FeedManager.instance.key(:home, account.id), reblog.id)).to be_nil
+        expect(list_timeline_ids).to_not include(
+          requested_status.id,
+          unknown_reply.id,
+          unreadable_dm_from_followed.id,
+          muted_status.id,
+          muted_reblog.id
+        )
+      end
     end
   end
 end