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35 lines
872 B
35 lines
872 B
class PrecomputeFeedService < BaseService
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MAX_FEED_SIZE = 800
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# Fill up a user's home/mentions feed from DB and return it
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# @param [Symbol] type :home or :mentions
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# @param [Account] account
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# @return [Array]
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def call(type, account)
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statuses = send(type.to_s, account).order('created_at desc').limit(MAX_FEED_SIZE)
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statuses.each { |status| push(type, account.id, status) }
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statuses
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end
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private
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def push(type, receiver_id, status)
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redis.zadd(key(type, receiver_id), status.created_at.to_i, status.id)
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end
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def home(account)
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Status.where(account: [account] + account.following).with_includes.with_counters
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end
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def mentions(account)
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Status.where(id: Mention.where(account: account).pluck(:status_id)).with_includes.with_counters
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end
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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 redis
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$redis
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end
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end
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