forked from fedi/mastodon
88 lines
2.4 KiB
Ruby
88 lines
2.4 KiB
Ruby
# frozen_string_literal: true
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module StatusControllerConcern
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extend ActiveSupport::Concern
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ANCESTORS_LIMIT = 40
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DESCENDANTS_LIMIT = 60
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DESCENDANTS_DEPTH_LIMIT = 20
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def create_descendant_thread(starting_depth, statuses)
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depth = starting_depth + statuses.size
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if depth < DESCENDANTS_DEPTH_LIMIT
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{
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statuses: statuses,
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starting_depth: starting_depth,
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}
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else
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next_status = statuses.pop
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{
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statuses: statuses,
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starting_depth: starting_depth,
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next_status: next_status,
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}
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end
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end
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def set_ancestors
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@ancestors = @status.reply? ? cache_collection(@status.ancestors(ANCESTORS_LIMIT, current_account), Status) : []
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@next_ancestor = @ancestors.size < ANCESTORS_LIMIT ? nil : @ancestors.shift
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end
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def set_descendants
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@max_descendant_thread_id = params[:max_descendant_thread_id]&.to_i
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@since_descendant_thread_id = params[:since_descendant_thread_id]&.to_i
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descendants = cache_collection(
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@status.descendants(
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DESCENDANTS_LIMIT,
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current_account,
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@max_descendant_thread_id,
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@since_descendant_thread_id,
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DESCENDANTS_DEPTH_LIMIT
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),
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Status
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)
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@descendant_threads = []
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if descendants.present?
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statuses = [descendants.first]
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starting_depth = 0
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descendants.drop(1).each_with_index do |descendant, index|
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if descendants[index].id == descendant.in_reply_to_id
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statuses << descendant
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else
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@descendant_threads << create_descendant_thread(starting_depth, statuses)
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# The thread is broken, assume it's a reply to the root status
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starting_depth = 0
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# ... unless we can find its ancestor in one of the already-processed threads
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@descendant_threads.reverse_each do |descendant_thread|
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statuses = descendant_thread[:statuses]
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index = statuses.find_index do |thread_status|
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thread_status.id == descendant.in_reply_to_id
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end
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if index.present?
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starting_depth = descendant_thread[:starting_depth] + index + 1
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break
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end
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end
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statuses = [descendant]
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end
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end
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@descendant_threads << create_descendant_thread(starting_depth, statuses)
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end
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@max_descendant_thread_id = @descendant_threads.pop[:statuses].first.id if descendants.size >= DESCENDANTS_LIMIT
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end
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end
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