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Add the thread participant fields sent by the real backend #56

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Add the thread participant fields sent by the real backend #56

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Add the thread participant fields sent by the real backend
gpunto Aug 6, 2026
c301f2e
Merge branch 'main' into fix/thread-participant-fields
gpunto Aug 10, 2026
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21 changes: 20 additions & 1 deletion src/helpers/threads.rb
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Original file line number Diff line number Diff line change
@@ -1,6 +1,8 @@
# Builds the thread objects served by the threads query from the tracked messages:
# every channel message with replies is a thread.

THREAD_PARTICIPANT_APP_PK = 102_398

def query_threads(reply_limit:)
parents = $message_list.select do |msg|
msg['parent_id'].nil? && $message_list.any? { |reply| reply['parent_id'] == msg['id'] }
Expand Down Expand Up @@ -29,6 +31,23 @@ def build_thread(parent:, reply_limit:)
'participant_count' => participants.count,
'reply_count' => replies.count,
'latest_replies' => replies.last(reply_limit),
'thread_participants' => participants.map { |user| { 'user_id' => user['id'], 'user' => user } }
'thread_participants' => participants.map { |user| build_thread_participant(parent: parent, user: user, replies: replies) }
}
end

# Mirrors the fields the real backend sends for a thread participant. Clients generated from the
# OpenAPI spec require app_pk, channel_cid, created_at, last_read_at and custom.
def build_thread_participant(parent:, user:, replies:)
user_replies = replies.select { |reply| reply['user']['id'] == user['id'] }
{
'app_pk' => THREAD_PARTICIPANT_APP_PK,
'channel_cid' => parent['cid'],
'thread_id' => parent['id'],
'user_id' => user['id'],
'user' => user,
'created_at' => user_replies.first['created_at'],
'last_read_at' => user_replies.last['created_at'],
'last_thread_message_at' => user_replies.last['created_at'],
'custom' => {}
}
end
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