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