79 lines
2.1 KiB
Ruby
79 lines
2.1 KiB
Ruby
# frozen_string_literal: true
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module DiscourseAi
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module Embeddings
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module Strategies
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class Truncation
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def id
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1
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end
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def version
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1
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end
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def prepare_text_from(target, tokenizer, max_length)
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case target
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when Topic
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topic_truncation(target, tokenizer, max_length)
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when Post
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post_truncation(target, tokenizer, max_length)
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else
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raise ArgumentError, "Invalid target type"
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end
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end
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private
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def topic_information(topic)
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info = +""
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if topic&.title.present?
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info << topic.title
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info << "\n\n"
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end
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if topic&.category&.name.present?
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info << topic.category.name
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info << "\n\n"
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end
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if SiteSetting.tagging_enabled && topic&.tags.present?
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info << topic.tags.pluck(:name).join(", ")
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info << "\n\n"
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end
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info
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end
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def topic_truncation(topic, tokenizer, max_length)
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text = +topic_information(topic)
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if topic&.topic_embed&.embed_content_cache&.present?
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text << Nokogiri::HTML5.fragment(topic.topic_embed.embed_content_cache).text
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text << "\n\n"
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end
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topic.posts.find_each do |post|
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text << Nokogiri::HTML5.fragment(post.cooked).text
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break if tokenizer.size(text) >= max_length #maybe keep a partial counter to speed this up?
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text << "\n\n"
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end
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tokenizer.truncate(text, max_length)
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end
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def post_truncation(post, tokenizer, max_length)
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text = +topic_information(post.topic)
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if post.is_first_post? && post.topic&.topic_embed&.embed_content_cache&.present?
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text << Nokogiri::HTML5.fragment(post.topic.topic_embed.embed_content_cache).text
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else
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text << Nokogiri::HTML5.fragment(post.cooked).text
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end
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tokenizer.truncate(text, max_length)
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end
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end
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end
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end
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end
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