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30990006a9
This reduces chances of errors where consumers of strings mutate inputs and reduces memory usage of the app. Test suite passes now, but there may be some stuff left, so we will run a few sites on a branch prior to merging
40 lines
1.1 KiB
Ruby
40 lines
1.1 KiB
Ruby
# frozen_string_literal: true
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class Unread
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# This module helps us calculate unread and new post counts
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def initialize(topic, topic_user, guardian)
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@guardian = guardian
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@topic = topic
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@topic_user = topic_user
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end
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def unread_posts
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return 0 if do_not_notify?(@topic_user.notification_level)
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result = ((@topic_user.highest_seen_post_number || 0) - (@topic_user.last_read_post_number || 0))
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result = 0 if result < 0
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result
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end
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def new_posts
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return 0 if @topic_user.highest_seen_post_number.blank?
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return 0 if do_not_notify?(@topic_user.notification_level)
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highest_post_number = @guardian.is_staff? ? @topic.highest_staff_post_number : @topic.highest_post_number
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return 0 if (@topic_user.last_read_post_number || 0) > highest_post_number
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new_posts = (highest_post_number - @topic_user.highest_seen_post_number)
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new_posts = 0 if new_posts < 0
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return new_posts
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end
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protected
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def do_not_notify?(notification_level)
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[TopicUser.notification_levels[:muted], TopicUser.notification_levels[:regular]].include?(notification_level)
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end
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end
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