views: adjust more <meta> descriptions.

* Add <meta> descriptions to more pages.
* Adjust wiki/pool/forum pages to use an excerpt of the first paragraph.

app/helpers/wiki_pages_helper.rb

@@ -1,9 +1,4 @@
 module WikiPagesHelper
-  def wiki_page_excerpt(wiki_page)
-    text = strip_dtext(wiki_page.body).split(/\r\n|\r|\n/).first
-    text.truncate(160)
-  end
-
   def wiki_page_other_names_list(wiki_page)
     names_html = wiki_page.other_names.map {|name| link_to(name, "http://www.pixiv.net/search.php?s_mode=s_tag_full&word=#{u(name)}", :class => "wiki-other-name")}
     names_html.join(" ").html_safe

app/logical/d_text.rb

@@ -262,9 +262,13 @@ class DText
   end
 
   # extract the first paragraph `needle` occurs in.
-  def self.excerpt(dtext, needle)
+  def self.extract_mention(dtext, needle)
     dtext = dtext.gsub(/\r\n|\r|\n/, "\n")
     excerpt = ActionController::Base.helpers.excerpt(dtext, needle, separator: "\n\n", radius: 1, omission: "")
     excerpt
   end
+
+  def self.excerpt(text, length: 160)
+    strip_dtext(text).split(/\r\n|\r|\n/).first.to_s.truncate(length)
+  end
 end

app/models/comment.rb

@@ -20,7 +20,7 @@ class Comment < ApplicationRecord
   mentionable(
     :message_field => :body,
     :title => ->(user_name) {"#{creator.name} mentioned you in a comment on post ##{post_id}"},
-    :body => ->(user_name) {"@#{creator.name} mentioned you in a \"comment\":/posts/#{post_id}#comment-#{id} on post ##{post_id}:\n\n[quote]\n#{DText.excerpt(body, "@" + user_name)}\n[/quote]\n"}
+    :body => ->(user_name) {"@#{creator.name} mentioned you in a \"comment\":/posts/#{post_id}#comment-#{id} on post ##{post_id}:\n\n[quote]\n#{DText.extract_mention(body, "@" + user_name)}\n[/quote]\n"}
   )
 
   api_attributes including: [:creator_name, :updater_name]

app/models/forum_post.rb

@@ -32,7 +32,7 @@ class ForumPost < ApplicationRecord
   mentionable(
     :message_field => :body,
     :title => ->(user_name) {%{#{creator.name} mentioned you in topic ##{topic_id} (#{topic.title})}},
-    :body => ->(user_name) {%{@#{creator.name} mentioned you in topic ##{topic_id} ("#{topic.title}":[/forum_topics/#{topic_id}?page=#{forum_topic_page}]):\n\n[quote]\n#{DText.excerpt(body, "@" + user_name)}\n[/quote]\n}}
+    :body => ->(user_name) {%{@#{creator.name} mentioned you in topic ##{topic_id} ("#{topic.title}":[/forum_topics/#{topic_id}?page=#{forum_topic_page}]):\n\n[quote]\n#{DText.extract_mention(body, "@" + user_name)}\n[/quote]\n}}
   )
 
   module SearchMethods

app/views/artists/index.html.erb

@@ -1,3 +1,5 @@
+<% meta_description "Search thousands of anime & hentai artists on #{Danbooru.config.app_name}." %>
+
 <div id="c-artists">
   <div id="a-index">
     <%= render "search" %>

app/views/comments/_index_by_post.html.erb

@@ -1,3 +1,5 @@
+<% meta_description "See comments on #{Danbooru.config.app_name}." %>
+
 <div id="p-index-by-post">
   <% if !CurrentUser.user.is_builder? %>
     <div style="margin-bottom: 1em;">

app/views/explore/posts/popular.html.erb

@@ -1,4 +1,6 @@
 <% page_title "Popular Posts" %>
+<% meta_description "The most popular posts per #{@scale}" %>
+
 <%= render "posts/partials/common/secondary_links" %>
 
 <div id="c-explore-posts">
@@ -26,7 +28,3 @@
     <%= post_previews_html(@posts) %>
   </div>
 </div>
-
-<% content_for(:html_header) do %>
-  <meta name="description" content="The most popular posts per <%= @scale %>">
-<% end %>

app/views/explore/posts/viewed.html.erb

@@ -1,4 +1,6 @@
 <% page_title "Most Viewed" %>
+<% meta_description "The most viewed posts per #{@scale}" %>
+
 <%= render "posts/partials/common/secondary_links" %>
 
 <div id="c-explore-posts">
@@ -17,7 +19,3 @@
     </div>
   </div>
 </div>
-
-<% content_for(:html_header) do %>
-  <meta name="description" content="The most viewed posts per day">
-<% end %>

app/views/favorite_groups/show.html.erb

@@ -1,4 +1,4 @@
-<% page_title "Favgroup: #{@favorite_group.pretty_name.titleize}" %>
+<% page_title "Favgroup: #{@favorite_group.pretty_name}" %>
 <%= render "secondary_links" %>
 
 <div id="c-favorite-groups">

app/views/forum_topics/show.html.erb

@@ -1,4 +1,5 @@
 <% page_title @forum_topic.title %>
+<% meta_description(DText.excerpt(@forum_topic.original_post&.body)) %>
 
 <div id="c-forum-topics">
   <div id="a-show">

app/views/notes/index.html.erb

@@ -1,3 +1,5 @@
+<% meta_description "See thousands of translated anime & hentai comics on #{Danbooru.config.app_name}." %>
+
 <div id="c-notes">
   <div id="a-index">
     <h1>Notes</h1>

app/views/pool_versions/diff.html.erb

@@ -1,4 +1,4 @@
-<% page_title "Pool Comparison: #{@pool_version.pretty_name.titleize}" %>
+<% page_title "Pool Comparison: #{@pool_version.pretty_name}" %>
 <%= render "secondary_links" %>
 
 <div id="c-pool-versions">

app/views/pools/gallery.html.erb

@@ -1,4 +1,6 @@
 <% page_title "Pool Gallery" %>
+<% meta_description "See thousands of translated anime & hentai comics, galleries, doujins, and more on #{Danbooru.config.app_name}." %>
+
 <%= render "secondary_links" %>
 
 <div id="c-pools">

app/views/pools/index.html.erb

@@ -1,3 +1,8 @@
+<% page_title "Pools" %>
+<% meta_description "See thousands of translated anime & hentai comics, galleries, doujins, and more on #{Danbooru.config.app_name}." %>
+
+<%= render "secondary_links" %>
+
 <div id="c-pools">
   <div id="a-index">
     <%= render "search", :path => pools_path %>
@@ -20,9 +25,3 @@
     <%= numbered_paginator(@pools) %>
   </div>
 </div>
-
-<%= render "secondary_links" %>
-
-<% content_for(:html_header) do %>
-  <meta name="description" content="Pools are groups of posts with something in common. The most common use of pools is for posts that are part of a series (such as a comic, or a group of images released by an artist).">
-<% end %>

app/views/pools/show.html.erb

@@ -1,4 +1,6 @@
-<% page_title "#{@pool.pretty_name.titleize} | Pool" %>
+<% page_title @pool.pretty_name %>
+<% meta_description("#{number_with_delimiter(@pool.post_count)} pages. #{DText.excerpt(@pool.description)}") %>
+
 <%= render "secondary_links" %>
 
 <div id="c-pools">
@@ -28,7 +30,3 @@
     </section>
   </div>
 </div>
-
-<% content_for(:html_header) do %>
-  <meta name="description" content="<%= strip_dtext(@pool.description) %>">
-<% end %>

app/views/posts/partials/index/_seo_meta_tags.html.erb

@@ -3,7 +3,7 @@
   <% meta_description("#{Danbooru.config.canonical_app_name} is the original anime image 'booru. Find over 3.75 million anime pictures categorized by over 100 million tags.") %>
 <% else %>
   <% page_title("#{@post_set.humanized_tag_string} Art") %>
-  <% meta_description("Find over #{number_with_delimiter(@post_set.post_count)} #{@post_set.humanized_tag_string} images on #{Danbooru.config.app_name}. #{wiki_page_excerpt(@post_set.wiki_page) if @post_set.wiki_page}") %>
+  <% meta_description("See over #{number_with_delimiter(@post_set.post_count)} #{@post_set.humanized_tag_string} images on #{Danbooru.config.app_name}. #{DText.excerpt(@post_set.wiki_page&.body)}") %>
 <% end %>
 
 <%= tag.link href: posts_path(format: "atom", tags: params[:tags]), rel: "alternate", title: "ATOM", type: "application/atom+xml" %>

app/views/posts/show.html.erb

@@ -1,4 +1,6 @@
 <% page_title @post.presenter.humanized_essential_tag_string %>
+<% meta_description "View this #{@post.image_width}x#{@post.image_height} #{number_to_human_size(@post.file_size)} image" %>
+
 <%= render "posts/partials/common/secondary_links" %>
 
 <% content_for(:sidebar) do %>
@@ -155,7 +157,6 @@
 <%= post_view_count_js %>
 
 <% content_for(:html_header) do %>
-  <%= tag.meta name: "description", content: "View this #{@post.image_width}x#{@post.image_height} #{number_to_human_size(@post.file_size)} image" %>
   <meta name="post-id" content="<%= @post.id %>">
   <meta name="post-has-embedded-notes" content="<%= @post.has_embedded_notes? %>">
   <meta name="always-resize-images" content="<%= CurrentUser.user.always_resize_images? %>">
@@ -174,7 +175,6 @@
   <% if @post.twitter_card_supported? %>
     <meta name="twitter:card" content="summary_large_image">
     <%= tag.meta name: "twitter:site", content: Danbooru.config.twitter_site %>
-    <%= tag.meta name: "twitter:description", content: "View this #{@post.image_width}x#{@post.image_height} #{number_to_human_size(@post.file_size)} image" %>
 
     <% if @post.visible? %>
       <%= tag.meta name: "twitter:image", content: @post.open_graph_image_url %>

app/views/sessions/new.html.erb

@@ -1,4 +1,6 @@
 <% page_title "Login" %>
+<% meta_description "Login to #{Danbooru.config.app_name}" %>
+
 <%= render "secondary_links" %>
 
 <div id="c-sessions">

app/views/tags/index.html.erb

@@ -1,3 +1,5 @@
+<% meta_description "Search thousands of tags on #{Danbooru.config.app_name}." %>
+
 <div id="c-tags">
   <div id="a-index" class="fixed-width-container">
     <%= render "search" %>

app/views/user_upgrades/new.html.erb

@@ -1,4 +1,6 @@
 <% page_title "Account Upgrade" %>
+<% meta_description "Upgrade to a Gold or Platinum account on #{Danbooru.config.app_name}." %>
+
 <%= render "users/secondary_links" %>
 
 <div id="c-user-upgrades">

app/views/users/new.html.erb

@@ -1,4 +1,6 @@
 <% page_title "Sign up" %>
+<% meta_description "Create a new account for free on #{Danbooru.config.app_name}." %>
+
 <%= render "secondary_links" %>
 
 <div id="c-users">

app/views/wiki_pages/show.html.erb

@@ -1,4 +1,5 @@
 <% page_title "#{@wiki_page.pretty_title.titleize} Wiki" %>
+<% meta_description DText.excerpt(@wiki_page.body) %>
 
 <%= render "secondary_links" %>
 <%= render "sidebar" %>
@@ -40,7 +41,3 @@
 
   <%= render "wiki_pages/posts", wiki_page: @wiki_page %>
 <% end %>
-
-<% content_for(:html_header) do %>
-  <%= tag.meta name: "description", content: wiki_page_excerpt(@wiki_page) %>
-<% end %>