#14 作成は完了

backend/app/controllers/posts_controller.rb

@@ -36,37 +36,16 @@ class PostsController < ApplicationController
 
   # POST /posts
   def create
+    logger.info ">>> thumbnail: #{params[:thumbnail]&.content_type}"
+logger.info ">>> filename: #{params[:thumbnail]&.original_filename}"
+
     return head :unauthorized unless current_user
     return head :forbidden unless ['admin', 'member'].include?(current_user.role)
 
     # TODO: URL が正規のものがチェック，不正ならエラー
     title = params[:title]
-    unless title.present?
-      # TODO: # 既知サイトなら決まったフォーマットで title 取得するやぅに．
-      begin
-        html = URI.open(params[:url], open_timeout: 5, read_timeout: 5).read
-        doc = Nokogiri::HTML.parse(html)
-        title = doc.at('title')&.text&.strip || ''
-      rescue
-        title = ''
-      end
-    end
     post = Post.new(title: title, url: params[:url], thumbnail_base: '', uploaded_user: current_user)
-    if params[:thumbnail].present?
-      post.thumbnail.attach(params[:thumbnail])
-    else
-      # TODO: 既知ドメインであれば指定のアドレスからサムネールを取得するやぅにする．
-      path = Rails.root.join('tmp', "thumb_#{ SecureRandom.hex }.png")
-      system("node #{ Rails.root }/lib/screenshot.js #{ Shellwords.escape(params[:url]) } #{ path }")
-      if File.exist?(path)
-        image = MiniMagick::Image.open(path)
-        image.resize '180x180'
-        post.thumbnail.attach(io:           File.open(image.path),
-                              filename:     'thumbnail.png',
-                              content_type: 'image/png')
-        File.delete(path) rescue nil
-      end
-    end
+    post.thumbnail.attach(params[:thumbnail])
     if post.save
       post.resized_thumbnail!
       if params[:tags].present?

backend/app/controllers/preview_controller.rb

@@ -0,0 +1,37 @@
+class PreviewController < ApplicationController
+  def title
+    # TODO: # 既知サイトなら決まったフォーマットで title 取得するやぅに．
+    return head :unauthorized unless current_user
+
+    url = params[:url]
+    return head :bad_request unless url.present?
+
+    html = URI.open(url, open_timeout: 5, read_timeout: 5).read
+    doc = Nokogiri::HTML.parse(html)
+    title = doc.at('title')&.text&.strip
+
+    render json: { title: title }
+  rescue => e
+    render json: { error: e.message }, status: :bad_request
+  end
+
+  def thumbnail
+    # TODO: 既知ドメインであれば指定のアドレスからサムネールを取得するやぅにする．
+    return head :unauthorized unless current_user
+
+    url = params[:url]
+    return head :bad_request unless url.present?
+
+    path = Rails.root.join('tmp', "thumb_#{ SecureRandom.hex }.png")
+    system("node #{ Rails.root }/lib/screenshot.js #{ Shellwords.escape(url) } #{ path }")
+
+    if File.exist?(path)
+      image = MiniMagick::Image.open(path)
+      image.resize '180x180'
+      File.delete(path) rescue nil
+      send_file image.path, type: 'image/png', disposition: 'inline'
+    else
+      render json: { error: 'Failed to generate thumbnail' }, status: :internal_server_error
+    end
+  end
+end