41b30fc64c
* Open recommendations to all users (not just gold). * Show recommendations on all posts (not just posts after 2017). * Allow users to browse recommendations for other users. * Increase number of recommended posts returned. * Change endpoints to /recommended_posts?user_id=1234 and /recommended_posts?post_id=1234 and add json/xml support.
41 lines
1.1 KiB
Ruby
41 lines
1.1 KiB
Ruby
module RecommenderService
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module_function
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MIN_POST_FAVS = 5
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MIN_USER_FAVS = 50
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CACHE_LIFETIME = 4.hours
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def enabled?
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Danbooru.config.recommender_server.present?
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end
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def available_for_post?(post)
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enabled? && post.fav_count > MIN_POST_FAVS
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end
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def available_for_user?(user)
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enabled? && user.favorite_count > MIN_USER_FAVS
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end
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def recommend_for_user(user_id, limit = 50)
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body, status = HttpartyCache.get("#{Danbooru.config.recommender_server}/recommend/#{user_id}", params: { limit: limit }, expiry: CACHE_LIFETIME)
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return [] if status != 200
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process_recs(body)
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end
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def recommend_for_post(post_id, limit = 50)
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body, status = HttpartyCache.get("#{Danbooru.config.recommender_server}/similar/#{post_id}", params: { limit: limit }, expiry: CACHE_LIFETIME)
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return [] if status != 200
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process_recs(body).reject { |rec| rec[:post].id == post_id }
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end
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def process_recs(recs)
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recs = JSON.parse(recs).to_h
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recs = Post.where(id: recs.keys).map { |post| { score: recs[post.id], post: post } }
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recs = recs.sort_by { |rec| -rec[:score] }
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recs
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end
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end
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