FEATURE: Anthropic Claude for AIHelper and Summarization modules (#39)

app/controllers/discourse_ai/ai_helper/assistant_controller.rb

@@ -10,7 +10,7 @@ module DiscourseAi
       def prompts
         render json:
                  ActiveModel::ArraySerializer.new(
-                   DiscourseAi::AiHelper::OpenAiPrompt.new.available_prompts,
+                   DiscourseAi::AiHelper::LlmPrompt.new.available_prompts,
                    root: false,
                  ),
                status: 200
@@ -19,20 +19,21 @@ module DiscourseAi
       def suggest
         raise Discourse::InvalidParameters.new(:text) if params[:text].blank?
 
-        prompt = CompletionPrompt.find_by(name: params[:mode])
+        prompt = CompletionPrompt.find_by(id: params[:mode])
         raise Discourse::InvalidParameters.new(:mode) if !prompt || !prompt.enabled?
 
         RateLimiter.new(current_user, "ai_assistant", 6, 3.minutes).performed!
 
         hijack do
           render json:
-                   DiscourseAi::AiHelper::OpenAiPrompt.new.generate_and_send_prompt(
+                   DiscourseAi::AiHelper::LlmPrompt.new.generate_and_send_prompt(
                      prompt,
                      params[:text],
                    ),
                  status: 200
         end
-      rescue DiscourseAi::Inference::OpenAiCompletions::CompletionFailed
+      rescue ::DiscourseAi::Inference::OpenAiCompletions::CompletionFailed,
+             ::DiscourseAi::Inference::AnthropicCompletions::CompletionFailed => e
         render_json_error I18n.t("discourse_ai.ai_helper.errors.completion_request_failed"),
                           status: 502
       end

app/models/completion_prompt.rb

@@ -4,16 +4,17 @@ class CompletionPrompt < ActiveRecord::Base
   # TODO(roman): Remove sept 2023.
   self.ignored_columns = ["value"]
 
-  VALID_ROLES = %w[system user assistant]
-
   enum :prompt_type, { text: 0, list: 1, diff: 2 }
 
   validates :messages, length: { maximum: 20 }
   validate :each_message_length
-  validate :each_message_role
 
   def messages_with_user_input(user_input)
+    if ::DiscourseAi::AiHelper::LlmPrompt.new.enabled_provider == "openai"
       self.messages << { role: "user", content: user_input }
+    else
+      self.messages << { "role" => "Input", "content" => "<input>#{user_input}</input>" }
+    end
   end
 
   private
@@ -25,14 +26,6 @@ class CompletionPrompt < ActiveRecord::Base
       errors.add(:messages, I18n.t("errors.prompt_message_length", idx: idx + 1))
     end
   end
-
-  def each_message_role
-    messages.each_with_index do |msg, idx|
-      next if VALID_ROLES.include?(msg["role"])
-
-      errors.add(:messages, I18n.t("errors.invalid_prompt_role", idx: idx + 1))
-    end
-  end
 end
 
 # == Schema Information
@@ -46,9 +39,10 @@ end
 #  enabled         :boolean          default(TRUE), not null
 #  created_at      :datetime         not null
 #  updated_at      :datetime         not null
-#  messages        :jsonb            not null
+#  messages        :jsonb
+#  provider        :text
 #
 # Indexes
 #
-#  index_completion_prompts_on_name  (name) UNIQUE
+#  index_completion_prompts_on_name  (name)
 #

assets/javascripts/discourse/components/ai-helper.js

@@ -21,6 +21,7 @@ export default class AiHelper extends Component {
   @tracked proofreadDiff = null;
 
   @tracked helperOptions = [];
+  prompts = [];
   promptTypes = {};
 
   constructor() {
@@ -29,7 +30,11 @@ export default class AiHelper extends Component {
   }
 
   async loadPrompts() {
-    const prompts = await ajax("/discourse-ai/ai-helper/prompts");
+    let prompts = await ajax("/discourse-ai/ai-helper/prompts");
+
+    prompts.map((p) => {
+      this.prompts[p.id] = p;
+    });
 
     this.promptTypes = prompts.reduce((memo, p) => {
       memo[p.name] = p.prompt_type;
@@ -39,7 +44,7 @@ export default class AiHelper extends Component {
     this.helperOptions = prompts.map((p) => {
       return {
         name: p.translated_name,
-        value: p.name,
+        value: p.id,
       };
     });
   }
@@ -53,7 +58,9 @@ export default class AiHelper extends Component {
   @computed("selected", "selectedTitle", "translatingText", "proofreadingText")
   get canSave() {
     return (
-      (this.promptTypes[this.selected] === LIST && this.selectedTitle) ||
+      (this.selected &&
+        this.prompts[this.selected].prompt_type === LIST &&
+        this.selectedTitle) ||
       this.translatingText ||
       this.proofreadingText
     );
@@ -62,19 +69,26 @@ export default class AiHelper extends Component {
   @computed("selected", "translatedSuggestion")
   get translatingText() {
     return (
-      this.promptTypes[this.selected] === TEXT && this.translatedSuggestion
+      this.selected &&
+      this.prompts[this.selected].prompt_type === TEXT &&
+      this.translatedSuggestion
     );
   }
 
   @computed("selected", "proofReadSuggestion")
   get proofreadingText() {
-    return this.promptTypes[this.selected] === DIFF && this.proofReadSuggestion;
+    return (
+      this.selected &&
+      this.prompts[this.selected].prompt_type === DIFF &&
+      this.proofReadSuggestion
+    );
   }
 
   @computed("selected", "generatedTitlesSuggestions")
   get selectingTopicTitle() {
     return (
-      this.promptTypes[this.selected] === LIST &&
+      this.selected &&
+      this.prompts[this.selected].prompt_type === LIST &&
       this.generatedTitlesSuggestions.length > 0
     );
   }

assets/javascripts/initializers/composer-ai-helper.js

@@ -60,7 +60,7 @@ export default {
     const allowedGroups = settings.ai_helper_allowed_groups
       .split("|")
       .map(parseInt);
-    const canUseAssistant =
+    let canUseAssistant =
       user && user.groups.some((g) => allowedGroups.includes(g.id));
 
     if (helperEnabled && canUseAssistant) {

config/settings.yml

@@ -87,6 +87,8 @@ plugins:
 
   ai_openai_api_key:
     default: ""
+  ai_anthropic_api_key:
+    default: ""
 
   composer_ai_helper_enabled:
     default: false
@@ -107,6 +109,7 @@ plugins:
     choices:
       - gpt-3.5-turbo
       - gpt-4
+      - claude-v1
 
   ai_embeddings_enabled: 
     default: false
@@ -165,4 +168,5 @@ plugins:
      - long-t5-tglobal-base-16384-book-summary
      - gpt-3.5-turbo
      - gpt-4
+     - claude-v1
   ai_summarization_rate_limit_minutes: 10

db/fixtures/ai-helper/600_openai_completion_prompts.rb

@@ -1,6 +1,7 @@
 # frozen_string_literal: true
 CompletionPrompt.seed do |cp|
   cp.id = -1
+  cp.provider = "openai"
   cp.name = "translate"
   cp.prompt_type = CompletionPrompt.prompt_types[:text]
   cp.messages = [{ role: "system", content: <<~TEXT }]
@@ -15,6 +16,7 @@ end
 
 CompletionPrompt.seed do |cp|
   cp.id = -2
+  cp.provider = "openai"
   cp.name = "generate_titles"
   cp.prompt_type = CompletionPrompt.prompt_types[:list]
   cp.messages = [{ role: "system", content: <<~TEXT }]
@@ -27,6 +29,7 @@ end
 
 CompletionPrompt.seed do |cp|
   cp.id = -3
+  cp.provider = "openai"
   cp.name = "proofread"
   cp.prompt_type = CompletionPrompt.prompt_types[:diff]
   cp.messages = [
@@ -83,6 +86,7 @@ end
 
 CompletionPrompt.seed do |cp|
   cp.id = -4
+  cp.provider = "openai"
   cp.name = "markdown_table"
   cp.prompt_type = CompletionPrompt.prompt_types[:diff]
   cp.messages = [

db/fixtures/ai-helper/601_anthropic_completion_prompts.rb

@@ -0,0 +1,56 @@
+# frozen_string_literal: true
+CompletionPrompt.seed do |cp|
+  cp.id = -101
+  cp.provider = "anthropic"
+  cp.name = "Traslate to English"
+  cp.prompt_type = CompletionPrompt.prompt_types[:text]
+  cp.messages = [{ role: "Human", content: <<~TEXT }]
+    I want you to act as an English translator, spelling corrector and improver. I will speak to you
+    in any language and you will detect the language, translate it and answer in the corrected and 
+    improved version of my text, in English. I want you to replace my simplified A0-level words and 
+    sentences with more beautiful and elegant, upper level English words and sentences. 
+    Keep the meaning same, but make them more literary. I will provide you with a text inside <input> tags,
+    please put the translation between <ai></ai> tags.
+  TEXT
+end
+
+CompletionPrompt.seed do |cp|
+  cp.id = -102
+  cp.provider = "anthropic"
+  cp.name = "Suggest topic titles"
+  cp.prompt_type = CompletionPrompt.prompt_types[:list]
+  cp.messages = [{ role: "Human", content: <<~TEXT }]
+    I want you to act as a title generator for written pieces. I will provide you with a text inside <input> tags, 
+    and you will generate five attention-grabbing titles. Please keep the title concise and under 20 words,
+    and ensure that the meaning is maintained. Replies will utilize the language type of the topic.
+    Please put each suggestion between <ai></ai> tags.
+  TEXT
+end
+
+CompletionPrompt.seed do |cp|
+  cp.id = -103
+  cp.provider = "anthropic"
+  cp.name = "Proofread"
+  cp.prompt_type = CompletionPrompt.prompt_types[:diff]
+  cp.messages = [{ role: "Human", content: <<~TEXT }]
+      You are a markdown proofreader. You correct egregious typos and phrasing issues but keep the user's original voice.
+      You do not touch code blocks. I will provide you with text to proofread. If nothing needs fixing, then you will echo the text back.
+
+      Optionally, a user can specify intensity. Intensity 10 is a pedantic English teacher correcting the text.
+      Intensity 1 is a minimal proofreader. By default, you operate at intensity 1.
+      I will provide you with a text inside <input> tags,
+      please reply with the corrected text between <ai></ai> tags.
+    TEXT
+end
+
+CompletionPrompt.seed do |cp|
+  cp.id = -104
+  cp.provider = "anthropic"
+  cp.name = "Convert to table"
+  cp.prompt_type = CompletionPrompt.prompt_types[:diff]
+  cp.messages = [{ role: "Human", content: <<~TEXT }]
+      You are a markdown table formatter, I will provide you text and you will format it into a markdown table.
+      I will provide you with a text inside <input> tags,
+      please reply with the corrected text between <ai></ai> tags.
+    TEXT
+end

db/migrate/20230406135943_add_provider_to_completion_prompts.rb

@@ -0,0 +1,22 @@
+# frozen_string_literal: true
+
+class AddProviderToCompletionPrompts < ActiveRecord::Migration[7.0]
+  def up
+    remove_index :completion_prompts, name: "index_completion_prompts_on_name"
+    add_column :completion_prompts, :provider, :text
+    add_index :completion_prompts, %i[name], unique: false
+
+    # set provider for existing prompts
+    DB.exec <<~SQL
+      UPDATE completion_prompts
+      SET provider = 'openai'
+      WHERE provider IS NULL;
+    SQL
+  end
+
+  def down
+    remove_column :completion_prompts, :provider
+    remove_index :completion_prompts, name: "index_completion_prompts_on_name"
+    add_index :completion_prompts, %i[name], unique: true
+  end
+end

lib/modules/ai_helper/entry_point.rb

@@ -3,7 +3,7 @@ module DiscourseAi
   module AiHelper
     class EntryPoint
       def load_files
-        require_relative "open_ai_prompt"
+        require_relative "llm_prompt"
       end
 
       def inject_into(plugin)

lib/modules/ai_helper/llm_prompt.rb

@@ -0,0 +1,111 @@
+# frozen_string_literal: true
+
+module DiscourseAi
+  module AiHelper
+    class LlmPrompt
+      def available_prompts
+        CompletionPrompt
+          .where(provider: enabled_provider)
+          .where(enabled: true)
+          .map do |prompt|
+            translation =
+              I18n.t("discourse_ai.ai_helper.prompts.#{prompt.name}", default: nil) ||
+                prompt.translated_name || prompt.name
+
+            {
+              id: prompt.id,
+              name: prompt.name,
+              translated_name: translation,
+              prompt_type: prompt.prompt_type,
+            }
+          end
+      end
+
+      def generate_and_send_prompt(prompt, text)
+        if enabled_provider == "openai"
+          openai_call(prompt, text)
+        else
+          anthropic_call(prompt, text)
+        end
+      end
+
+      def enabled_provider
+        if SiteSetting.ai_helper_model.start_with?("gpt")
+          "openai"
+        else
+          "anthropic"
+        end
+      end
+
+      private
+
+      def generate_diff(text, suggestion)
+        cooked_text = PrettyText.cook(text)
+        cooked_suggestion = PrettyText.cook(suggestion)
+
+        DiscourseDiff.new(cooked_text, cooked_suggestion).inline_html
+      end
+
+      def parse_content(prompt, content)
+        return "" if content.blank?
+
+        if enabled_provider == "openai"
+          return content.strip if !prompt.list?
+
+          content.gsub("\"", "").gsub(/\d./, "").split("\n").map(&:strip)
+        else
+          parse_antropic_content(prompt, content)
+        end
+      end
+
+      def openai_call(prompt, text)
+        result = { type: prompt.prompt_type }
+
+        messages = prompt.messages_with_user_input(text)
+
+        result[:suggestions] = DiscourseAi::Inference::OpenAiCompletions
+          .perform!(messages)
+          .dig(:choices)
+          .to_a
+          .flat_map { |choice| parse_content(prompt, choice.dig(:message, :content).to_s) }
+          .compact_blank
+
+        result[:diff] = generate_diff(text, result[:suggestions].first) if prompt.diff?
+
+        result
+      end
+
+      def anthropic_call(prompt, text)
+        result = { type: prompt.prompt_type }
+
+        filled_message = prompt.messages_with_user_input(text)
+
+        message =
+          filled_message.map { |msg| "#{msg["role"]}: #{msg["content"]}" }.join("\n\n") +
+            "Assistant:"
+
+        response = DiscourseAi::Inference::AnthropicCompletions.perform!(message)
+
+        result[:suggestions] = parse_content(prompt, response.dig(:completion))
+
+        result[:diff] = generate_diff(text, result[:suggestions].first) if prompt.diff?
+
+        result
+      end
+
+      def parse_antropic_content(prompt, content)
+        if prompt.list?
+          suggestions = Nokogiri::HTML5.fragment(content).search("ai").map(&:text)
+
+          if suggestions.length > 1
+            suggestions
+          else
+            suggestions.split("\n").map(&:strip)
+          end
+        else
+          [Nokogiri::HTML5.fragment(content).at("ai").text]
+        end
+      end
+    end
+  end
+end

lib/modules/ai_helper/open_ai_prompt.rb

@@ -1,52 +0,0 @@
-# frozen_string_literal: true
-
-module DiscourseAi
-  module AiHelper
-    class OpenAiPrompt
-      def available_prompts
-        CompletionPrompt
-          .where(enabled: true)
-          .map do |prompt|
-            translation =
-              I18n.t("discourse_ai.ai_helper.prompts.#{prompt.name}", default: nil) ||
-                prompt.translated_name
-
-            { name: prompt.name, translated_name: translation, prompt_type: prompt.prompt_type }
-          end
-      end
-
-      def generate_and_send_prompt(prompt, text)
-        result = { type: prompt.prompt_type }
-
-        messages = prompt.messages_with_user_input(text)
-
-        result[:suggestions] = DiscourseAi::Inference::OpenAiCompletions
-          .perform!(messages)
-          .dig(:choices)
-          .to_a
-          .flat_map { |choice| parse_content(prompt, choice.dig(:message, :content).to_s) }
-          .compact_blank
-
-        result[:diff] = generate_diff(text, result[:suggestions].first) if prompt.diff?
-
-        result
-      end
-
-      private
-
-      def generate_diff(text, suggestion)
-        cooked_text = PrettyText.cook(text)
-        cooked_suggestion = PrettyText.cook(suggestion)
-
-        DiscourseDiff.new(cooked_text, cooked_suggestion).inline_html
-      end
-
-      def parse_content(prompt, content)
-        return "" if content.blank?
-        return content.strip if !prompt.list?
-
-        content.gsub("\"", "").gsub(/\d./, "").split("\n").map(&:strip)
-      end
-    end
-  end
-end

lib/modules/summarization/summary_generator.rb

@@ -18,7 +18,16 @@ module DiscourseAi
       attr_reader :target
 
       def summarization_provider
-        model.starts_with?("gpt") ? "openai" : "discourse"
+        case model
+        in "gpt-3.5-turbo"
+          "openai"
+        in "gpt-4"
+          "openai"
+        in "claude-v1"
+          "anthropic"
+        else
+          "discourse"
+        end
       end
 
       def get_content(content_since)
@@ -63,6 +72,23 @@ module DiscourseAi
         )
       end
 
+      def anthropic_summarization(content)
+        messages =
+          "Human: Summarize the following article that is inside <input> tags.
+          Plese include only the summary inside <ai> tags.
+
+          <input>##{content}</input>
+
+
+          Assistant:
+        "
+
+        response =
+          ::DiscourseAi::Inference::AnthropicCompletions.perform!(messages).dig(:completion)
+
+        Nokogiri::HTML5.fragment(response).at("ai").text
+      end
+
       def model
         SiteSetting.ai_summarization_model
       end

lib/shared/inference/anthropic_completions.rb

@@ -0,0 +1,36 @@
+# frozen_string_literal: true
+
+module ::DiscourseAi
+  module Inference
+    class AnthropicCompletions
+      CompletionFailed = Class.new(StandardError)
+
+      def self.perform!(prompt)
+        headers = {
+          "x-api-key" => SiteSetting.ai_anthropic_api_key,
+          "Content-Type" => "application/json",
+        }
+
+        model = "claude-v1"
+
+        connection_opts = { request: { write_timeout: 60, read_timeout: 60, open_timeout: 60 } }
+
+        response =
+          Faraday.new(nil, connection_opts).post(
+            "https://api.anthropic.com/v1/complete",
+            { model: model, prompt: prompt, max_tokens_to_sample: 300 }.to_json,
+            headers,
+          )
+
+        if response.status != 200
+          Rails.logger.error(
+            "AnthropicCompletions: status: #{response.status} - body: #{response.body}",
+          )
+          raise CompletionFailed
+        end
+
+        JSON.parse(response.body, symbolize_names: true)
+      end
+    end
+  end
+end

plugin.rb

@@ -23,6 +23,7 @@ after_initialize do
   require_relative "lib/shared/inference/discourse_reranker"
   require_relative "lib/shared/inference/openai_completions"
   require_relative "lib/shared/inference/openai_embeddings"
+  require_relative "lib/shared/inference/anthropic_completions"
 
   require_relative "lib/shared/classificator"
   require_relative "lib/shared/post_classificator"

spec/lib/modules/ai_helper/llm_prompt_spec.rb

@@ -2,7 +2,7 @@
 
 require_relative "../../../support/openai_completions_inference_stubs"
 
-RSpec.describe DiscourseAi::AiHelper::OpenAiPrompt do
+RSpec.describe DiscourseAi::AiHelper::LlmPrompt do
   let(:prompt) { CompletionPrompt.find_by(name: mode) }
 
   describe "#generate_and_send_prompt" do

spec/models/completion_prompt_spec.rb

@@ -17,13 +17,5 @@ RSpec.describe CompletionPrompt do
         expect(prompt.valid?).to eq(false)
       end
     end
-
-    context "when the message has invalid roles" do
-      it "doesn't accept messages when the role is invalid" do
-        prompt = described_class.new(messages: [{ role: "invalid", content: "a" }])
-
-        expect(prompt.valid?).to eq(false)
-      end
-    end
   end
 end

spec/requests/ai_helper/assistant_controller_spec.rb

@@ -5,7 +5,7 @@ require_relative "../../support/openai_completions_inference_stubs"
 RSpec.describe DiscourseAi::AiHelper::AssistantController do
   describe "#suggest" do
     let(:text) { OpenAiCompletionsInferenceStubs.translated_response }
-    let(:mode) { "proofread" }
+    let(:mode) { "-3" }
 
     context "when not logged in" do
       it "returns a 403 response" do
@@ -64,7 +64,7 @@ RSpec.describe DiscourseAi::AiHelper::AssistantController do
       end
 
       it "returns a suggestion" do
-        OpenAiCompletionsInferenceStubs.stub_prompt(mode)
+        OpenAiCompletionsInferenceStubs.stub_prompt("proofread")
 
         post "/discourse-ai/ai-helper/suggest", params: { mode: mode, text: text }
 

spec/support/openai_completions_inference_stubs.rb

@@ -6,6 +6,17 @@ class OpenAiCompletionsInferenceStubs
   GENERATE_TITLES = "generate_titles"
 
   class << self
+    def text_mode_to_id(mode)
+      case mode
+      when TRANSLATE
+        -1
+      when PROOFREAD
+        -3
+      when GENERATE_TITLES
+        -2
+      end
+    end
+
     def spanish_text
       <<~STRING
         Para que su horror sea perfecto, César, acosado al pie de la estatua por lo impacientes puñales de sus amigos, 
@@ -83,7 +94,7 @@ class OpenAiCompletionsInferenceStubs
     end
 
     def stub_prompt(type)
-      prompt_builder = DiscourseAi::AiHelper::OpenAiPrompt.new
+      prompt_builder = DiscourseAi::AiHelper::LlmPrompt.new
       text = type == TRANSLATE ? spanish_text : translated_response
 
       prompt_messages = CompletionPrompt.find_by(name: type).messages_with_user_input(text)

spec/system/ai_helper/ai_composer_helper_spec.rb

@@ -28,7 +28,7 @@ RSpec.describe "AI Composer helper", type: :system, js: true do
 
       expect(ai_helper_modal).to be_visible
 
-      ai_helper_modal.select_helper_model(mode)
+      ai_helper_modal.select_helper_model(OpenAiCompletionsInferenceStubs.text_mode_to_id(mode))
       ai_helper_modal.save_changes
 
       expect(composer.composer_input.value).to eq(
@@ -51,7 +51,7 @@ RSpec.describe "AI Composer helper", type: :system, js: true do
 
       expect(ai_helper_modal).to be_visible
 
-      ai_helper_modal.select_helper_model(mode)
+      ai_helper_modal.select_helper_model(OpenAiCompletionsInferenceStubs.text_mode_to_id(mode))
       ai_helper_modal.save_changes
 
       expect(composer.composer_input.value).to eq(
@@ -74,7 +74,7 @@ RSpec.describe "AI Composer helper", type: :system, js: true do
 
       expect(ai_helper_modal).to be_visible
 
-      ai_helper_modal.select_helper_model(mode)
+      ai_helper_modal.select_helper_model(OpenAiCompletionsInferenceStubs.text_mode_to_id(mode))
       ai_helper_modal.select_title_suggestion(2)
       ai_helper_modal.save_changes