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71 lines
2.0 KiB
71 lines
2.0 KiB
require 'singleton'
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class FeedManager
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include Singleton
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MAX_ITEMS = 800
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def key(type, id)
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"feed:#{type}:#{id}"
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end
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def filter?(timeline_type, status, receiver)
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if timeline_type == :home
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filter_from_home?(status, receiver)
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else
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filter_from_mentions?(status, receiver)
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end
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end
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def push(timeline_type, account, status)
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redis.zadd(key(timeline_type, account.id), status.id, status.reblog? ? status.reblog_of_id : status.id)
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trim(timeline_type, account.id)
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broadcast(account.id, type: 'update', timeline: timeline_type, message: inline_render(account, status))
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end
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def broadcast(account_id, options = {})
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ActionCable.server.broadcast("timeline:#{account_id}", options)
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end
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def trim(type, account_id)
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return unless redis.zcard(key(type, account_id)) > FeedManager::MAX_ITEMS
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last = redis.zrevrange(key(type, account_id), FeedManager::MAX_ITEMS - 1, FeedManager::MAX_ITEMS - 1)
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redis.zremrangebyscore(key(type, account_id), '-inf', "(#{last.last}")
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end
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def inline_render(target_account, status)
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rabl_scope = Class.new do
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include RoutingHelper
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def initialize(account)
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@account = account
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end
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def current_user
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@account.try(:user)
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end
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def current_account
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@account
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end
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end
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Rabl::Renderer.new('api/v1/statuses/show', status, view_path: 'app/views', format: :json, scope: rabl_scope.new(target_account)).render
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end
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private
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def redis
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$redis
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end
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# Filter status out of the home feed if it is a reply to someone the user doesn't follow
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def filter_from_home?(status, receiver)
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replied_to_user = status.reply? ? status.thread.account : nil
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(status.reply? && !(receiver.id == replied_to_user.id || replied_to_user.id == status.account_id || receiver.following?(replied_to_user))) || (status.reblog? && receiver.blocking?(status.reblog.account))
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end
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def filter_from_mentions?(status, receiver)
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receiver.blocking?(status.account)
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end
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end
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