02b3bb8a8e
In my quest to find `where(attribute: value)` in controllers and even services, I stumbled upon this pattern. As of this commit (and prior) an Article's associated user is it's author.
75 lines
2.4 KiB
Ruby
75 lines
2.4 KiB
Ruby
class EmailDigestArticleCollector
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include Instrumentation
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ARTICLES_TO_SEND = "EmailDigestArticleCollector#articles_to_send".freeze
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def initialize(user)
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@user = user
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end
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def articles_to_send
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# rubocop:disable Metrics/BlockLength
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instrument ARTICLES_TO_SEND, tags: { user_id: @user.id } do
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return [] unless should_receive_email?
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articles = if user_has_followings?
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experience_level_rating = (@user.setting.experience_level || 5)
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experience_level_rating_min = experience_level_rating - 3.6
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experience_level_rating_max = experience_level_rating + 3.6
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@user.followed_articles
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.select(:title, :description, :path)
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.published
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.where("published_at > ?", cutoff_date)
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.where(email_digest_eligible: true)
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.not_authored_by(@user.id)
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.where("score > ?", 12)
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.where("experience_level_rating > ? AND experience_level_rating < ?",
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experience_level_rating_min, experience_level_rating_max)
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.order(score: :desc)
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.limit(6)
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else
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Article.select(:title, :description, :path)
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.published
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.where("published_at > ?", cutoff_date)
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.featured
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.where(email_digest_eligible: true)
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.not_authored_by(@user.id)
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.where("score > ?", 25)
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.order(score: :desc)
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.limit(6)
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end
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articles.length < 3 ? [] : articles
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end
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# rubocop:enable Metrics/BlockLength
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end
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private
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def should_receive_email?
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return true unless last_email_sent
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last_email_sent.before? Settings::General.periodic_email_digest.days.ago
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end
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def last_email_sent
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@last_email_sent ||=
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@user.email_messages
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.where(mailer: "DigestMailer#digest_email")
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.maximum(:sent_at)
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end
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def cutoff_date
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a_few_days_ago = 4.days.ago.utc
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return a_few_days_ago unless last_email_sent
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[a_few_days_ago, last_email_sent].max
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end
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def user_has_followings?
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@user.following_users_count.positive? ||
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@user.cached_followed_tag_names.any? ||
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@user.cached_antifollowed_tag_names.any?
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end
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end
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