3f26694976
* Try a ReactionCategory abstract 'model' * Use ReactionCategory * Lookup category, pre-reaction * Lookup category > constant * Category can sometimes be nil? * Try something friendlier for code reloading * Refactor: extract point calculation out of Reaction * Reaction Category can have color * Rename reaction points service to follow convention * method signature changed as well, calculate -> call * Fix typo, leading comment, and rename data structures for clarity
77 lines
2 KiB
Ruby
77 lines
2 KiB
Ruby
# Reaction uses this class to calculate points before saving
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class CalculateReactionPoints
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DEFAULT_SCORE = 1.0
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POINTS = {
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"invalid" => 0,
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"User" => 2,
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"confirmed" => 2,
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"positive" => 5,
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"negative" => -5
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}.freeze
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# Days to ramp up new user points weight
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NEW_USER_RAMPUP_DAYS_COUNT = 10
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def self.call(reaction)
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new(reaction).calculate_points
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end
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def initialize(reaction)
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@reaction = reaction
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end
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def calculate_points
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base_points = reaction_category_score
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# Adjust for certain states
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base_points = POINTS["invalid"] if status == "invalid"
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base_points /= POINTS["User"] if reactable_type == "User"
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base_points *= POINTS["confirmed"] if status == "confirmed"
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unless persisted? # Actions we only want to apply upon initial creation
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# Author's comment reaction counts for more weight on to their own posts. (5.0 vs 1.0)
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base_points *= POINTS["positive"] if positive_reaction_to_comment_on_own_article?
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# New users will have their reaction weight gradually ramp by 0.1 from 0 to 1.0.
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base_points *= new_user_adjusted_points if new_untrusted_user # New users get minimal reaction weight
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end
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user ? (base_points * user.reputation_modifier) : POINTS["negative"]
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end
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attr_reader :reaction
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delegate :category, :persisted?, :positive?, :reactable, :reactable_type, :status, :user, :user_id,
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to: :reaction
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private
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def reaction_category
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ReactionCategory[category]
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end
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def reaction_category_score
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reaction_category&.score || DEFAULT_SCORE
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end
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def new_untrusted_user
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user.registered_at > NEW_USER_RAMPUP_DAYS_COUNT.days.ago && !user.trusted? && !user.any_admin?
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end
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def new_user_adjusted_points
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((Time.current - user.registered_at).seconds.in_days / NEW_USER_RAMPUP_DAYS_COUNT)
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end
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def positive_reaction_to_comment_on_own_article?
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positive? && reaction_to_comment? && own_article?
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end
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def reaction_to_comment?
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reactable_type == "Comment"
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end
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def own_article?
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reactable&.commentable&.user_id == user_id
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end
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end
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