#361

backend/app/controllers/gekanator_games_controller.rb

@@ -1,6 +1,6 @@
 class GekanatorGamesController < ApplicationController
   def create
-    return head :not_found unless current_user&.admin?
+    return head :unauthorized unless current_user
 
     guessed_post_id = params.require(:guessed_post_id)
     correct_post_id = params[:correct_post_id].presence
@@ -22,10 +22,8 @@ class GekanatorGamesController < ApplicationController
   end
 
   def extra_questions
-    return head :not_found unless current_user&.admin?
-
-    game = GekanatorGame.find_by(id: params[:id])
-    return head :not_found unless game
+    game = find_owned_game
+    return if performed?
 
     questions =
         GekanatorQuestion
@@ -45,10 +43,8 @@ class GekanatorGamesController < ApplicationController
   end
 
   def extra_question_answers
-    return head :not_found unless current_user&.admin?
-
-    game = GekanatorGame.find_by(id: params[:id])
-    return head :not_found unless game
+    game = find_owned_game
+    return if performed?
 
     answer_params = params.require(:answers)
     if !answer_params.is_a?(Array)
@@ -137,4 +133,16 @@ class GekanatorGamesController < ApplicationController
 
     question.priority_weight.to_f / (1.0 + sample_count * 0.15)
   end
+
+  def find_owned_game
+    return head :unauthorized unless current_user
+
+    game = GekanatorGame.find_by(id: params[:id])
+    return head :not_found unless game
+    if !current_user.admin? && game.user_id != current_user.id
+      return head :not_found
+    end
+
+    game
+  end
 end

backend/app/controllers/gekanator_posts_controller.rb

@@ -1,7 +1,5 @@
 class GekanatorPostsController < ApplicationController
   def index
-    return head :not_found unless current_user&.admin?
-
     posts =
         Post
         .preload(tags: :tag_name)

backend/app/controllers/gekanator_question_suggestions_controller.rb

@@ -1,9 +1,12 @@
 class GekanatorQuestionSuggestionsController < ApplicationController
   def create
-    return head :not_found unless current_user&.admin?
+    return head :unauthorized unless current_user
 
     game = GekanatorGame.find_by(id: params.require(:gekanator_game_id))
     return head :not_found unless game
+    if !current_user.admin? && game.user_id != current_user.id
+      return head :not_found
+    end
 
     suggestion = GekanatorQuestionSuggestion.new(
         gekanator_game: game,

backend/app/controllers/gekanator_questions_controller.rb

@@ -1,7 +1,5 @@
 class GekanatorQuestionsController < ApplicationController
   def index
-    return head :not_found unless current_user&.admin?
-
     questions =
         GekanatorQuestion
         .accepted
@@ -49,6 +47,8 @@ class GekanatorQuestionsController < ApplicationController
       "title:length-at-least:#{ condition[:length].to_i + 1 }"
     when 'title-has-ascii'
       'title:ascii'
+    when 'title-contains'
+      "title:contains:#{ condition[:text] }"
     when 'post-similarity'
       "post-similarity:#{ question.id }"
     else
@@ -77,6 +77,8 @@ class GekanatorQuestionsController < ApplicationController
     case condition[:type]
     when 'title-length-at-least'
       "タイトルは #{ condition[:length] } 文字以上?"
+    when 'title-contains'
+      "題名に「#{ condition[:text] }」が含まれる?"
     else
       question.text
     end

backend/app/services/gekanator/question_suggestion_ai_converter.rb

@@ -1,5 +1,15 @@
 module Gekanator
   class QuestionSuggestionAiConverter
+    # Temporary heuristic converter for #361.
+    # This creates pending ai_generated questions without external LLM calls;
+    # accepted questions are still distributed only after admin approval.
+    TITLE_LENGTH_RE = /\Aタイトルは\s*(\d+)\s*文字以上[？?]\z/
+    ORIGINAL_YEAR_RE = /\Aオリジナルの投稿年は\s*(\d{4})\s*年[？?]\z/
+    ORIGINAL_MONTH_RE = /\Aオリジナルの投稿月は\s*(\d{1,2})\s*月[？?]\z/
+    ORIGINAL_MONTH_DAY_RE = /\Aオリジナルの投稿日は\s*(\d{1,2})\s*月\s*(\d{1,2})\s*日[？?]\z/
+    TITLE_CONTAINS_RE = /\A題名に「(.+?)」が含まれる[？?]\z/
+    SOURCE_RE = /\A(.+?)\s+の投稿を思[ひい]浮かべて[ゐい]る[？?]\z/
+
     def self.call(...) = new(...).call
 
     def initialize suggestion:, user:
@@ -8,11 +18,151 @@ module Gekanator
     end
 
     def call
-      raise NotImplementedError, 'AI question conversion is not implemented yet.'
+      suggestion.with_lock do
+        existing = existing_generated_question
+        return existing if existing
+
+        run = suggestion.gekanator_ai_runs.create!(
+            model: 'heuristic_converter_v1',
+            status: 'running',
+            input_tokens: 0,
+            output_tokens: 0,
+            estimated_cost_jpy: 0)
+
+        question_attributes = build_question
+        question =
+            question_attributes &&
+            GekanatorQuestion.create!(
+                **question_attributes,
+                source: 'ai_generated',
+                status: 'pending',
+                gekanator_question_suggestion: suggestion,
+                created_by: user)
+
+        run.update!(status: question ? 'succeeded' : 'failed')
+        question
+      end
+    rescue => error
+      run&.update!(status: 'failed') if run&.persisted? && run.status != 'failed'
+      raise error
     end
 
     private
 
     attr_reader :suggestion, :user
+
+    def existing_generated_question
+      suggestion
+          .gekanator_questions
+          .where(source: 'ai_generated')
+          .order(id: :desc)
+          .first
+    end
+
+    def build_question
+      text = normalized_text
+      return nil if text.blank?
+
+      structured_question_for(text) || post_similarity_question_for(text)
+    end
+
+    def normalized_text
+      suggestion.question_text.to_s.gsub(/[[:space:]]+/, ' ').strip
+    end
+
+    def structured_question_for text
+      case text
+      when TITLE_LENGTH_RE
+        length = Regexp.last_match(1).to_i
+        return nil if length <= 0
+
+        {
+          text:,
+          kind: 'title',
+          condition: {
+            type: 'title-length-at-least',
+            length:
+          },
+          priority_weight: 0.95
+        }
+      when /\A題名に英数字が混じって[ゐい]る[？?]\z/
+        {
+          text: '題名に英数字が混じってゐる?',
+          kind: 'title',
+          condition: { type: 'title-has-ascii' },
+          priority_weight: 0.95
+        }
+      when ORIGINAL_YEAR_RE
+        year = Regexp.last_match(1).to_i
+        {
+          text:,
+          kind: 'original_date',
+          condition: { type: 'original-year', year: },
+          priority_weight: 0.95
+        }
+      when ORIGINAL_MONTH_RE
+        month = Regexp.last_match(1).to_i
+        return nil unless month.between?(1, 12)
+
+        {
+          text:,
+          kind: 'original_date',
+          condition: { type: 'original-month', month: },
+          priority_weight: 0.95
+        }
+      when ORIGINAL_MONTH_DAY_RE
+        month = Regexp.last_match(1).to_i
+        day = Regexp.last_match(2).to_i
+        return nil unless month.between?(1, 12) && day.between?(1, 31)
+
+        {
+          text:,
+          kind: 'original_date',
+          condition: {
+            type: 'original-month-day',
+            monthDay: "#{ month }-#{ day }"
+          },
+          priority_weight: 0.95
+        }
+      when TITLE_CONTAINS_RE
+        title_text = Regexp.last_match(1).to_s.strip
+        return nil if title_text.blank?
+
+        {
+          text: "題名に「#{ title_text }」が含まれる?",
+          kind: 'title',
+          condition: { type: 'title-contains', text: title_text },
+          priority_weight: 0.95
+        }
+      when SOURCE_RE
+        host = Regexp.last_match(1).to_s.strip
+        return nil if host.blank?
+
+        {
+          text:,
+          kind: 'source',
+          condition: { type: 'source', host: },
+          priority_weight: 0.95
+        }
+      else
+        nil
+      end
+    end
+
+    def post_similarity_question_for text
+      return nil if suggestion.answer == 'unknown'
+
+      {
+        text:,
+        kind: 'post_similarity',
+        condition: {
+          type: 'post-similarity',
+          postId: suggestion.gekanator_game.correct_post_id,
+          answer: suggestion.answer,
+          threshold: 0.65
+        },
+        priority_weight: 1.0
+      }
+    end
   end
 end