burs/show: remove BUR update count estimate.

Remove the post update count estimate from BUR show pages. This was
complex, slow, and usually inaccurate since it assumed that requests in
a BUR had no overlap with each other, which usually wasn't the case.

app/jobs/tag_batch_change_job.rb

@@ -20,12 +20,6 @@ class TagBatchChangeJob < ApplicationJob
     end
   end
 
-  def self.estimate_update_count(antecedent, consequent)
-    CurrentUser.without_safe_mode do
-      Post.tag_match(antecedent).count
-    end
-  end
-
   def migrate_posts(normalized_antecedent, normalized_consequent)
     ::Post.tag_match(normalized_antecedent.join(" ")).find_each do |post|
       post.with_lock do

app/logical/alias_and_implication_importer.rb

@@ -78,24 +78,6 @@ class AliasAndImplicationImporter
     end
   end
 
-  def estimate_update_count
-    tokens = self.class.tokenize(text)
-    tokens.map do |token|
-      case token[0]
-      when :create_alias
-        TagAlias.new(antecedent_name: token[1], consequent_name: token[2]).estimate_update_count
-      when :create_implication
-        TagImplication.new(antecedent_name: token[1], consequent_name: token[2]).estimate_update_count
-      when :mass_update
-        TagBatchChangeJob.estimate_update_count(token[1], token[2])
-      when :change_category
-        Tag.find_by_name(token[1]).try(:post_count) || 0
-      else
-        0
-      end
-    end.sum
-  end
-
   def affected_tags
     tokens = self.class.tokenize(text)
     tokens.inject([]) do |all, token|

app/models/bulk_update_request.rb

@@ -206,10 +206,6 @@ class BulkUpdateRequest < ApplicationRecord
     status == "rejected"
   end
 
-  def estimate_update_count
-    AliasAndImplicationImporter.new(script, nil).estimate_update_count
-  end
-
   def update_notice
     TagChangeNoticeService.update_cache(
       AliasAndImplicationImporter.new(script, nil).affected_tags,

app/models/tag_relationship.rb

@@ -198,10 +198,6 @@ class TagRelationship < ApplicationRecord
     end
   end
 
-  def estimate_update_count
-    Post.fast_count(antecedent_name, skip_cache: true)
-  end
-
   def update_posts
     Post.without_timeout do
       Post.raw_tag_match(antecedent_name).find_each do |post|

app/views/bulk_update_requests/show.html.erb

@@ -9,7 +9,6 @@
       <li><strong>Creator</strong> <%= link_to_user @bulk_update_request.user %></li>
       <li><strong>Date</strong> <%= @bulk_update_request.created_at %></li>
       <li><strong>Status</strong>: <%= @bulk_update_request.status %></li>
-      <li><strong title="How many posts will be affected">Estimate</strong>: <%= @bulk_update_request.estimate_update_count %></li>
     </ul>
 
     <div style="margin: 1em 0;">

test/jobs/tag_batch_change_job_test.rb

@@ -7,12 +7,6 @@ class TagBatchChangeJobTest < ActiveJob::TestCase
       @post = create(:post, :tag_string => "aaa")
     end
 
-    context "#estimate_update_count" do
-      should "find the correct count" do
-        assert_equal(1, TagBatchChangeJob.estimate_update_count("aaa", "bbb"))
-      end
-    end
-
     should "execute" do
       TagBatchChangeJob.perform_now("aaa", "bbb", @user, "127.0.0.1")
       assert_equal("bbb", @post.reload.tag_string)

test/unit/alias_and_implication_importer_test.rb

@@ -48,28 +48,6 @@ class AliasAndImplicationImporterTest < ActiveSupport::TestCase
       end
     end
 
-    context "#estimate_update_count" do
-      setup do
-        FactoryBot.create(:post, tag_string: "aaa")
-        FactoryBot.create(:post, tag_string: "bbb")
-        FactoryBot.create(:post, tag_string: "ccc")
-        FactoryBot.create(:post, tag_string: "ddd")
-        FactoryBot.create(:post, tag_string: "eee")
-
-        @script = "create alias aaa -> 000\n" +
-          "create implication bbb -> 111\n" +
-          "remove alias ccc -> 222\n" +
-          "remove implication ddd -> 333\n" +
-          "mass update eee -> 444\n"
-      end
-
-      subject { AliasAndImplicationImporter.new(@script, nil) }
-
-      should "return the correct count" do
-        assert_equal(3, subject.estimate_update_count)
-      end
-    end
-
     context "given a valid list" do
       setup do
         @list = "create alias abc -> def\ncreate implication aaa -> bbb\n"

test/unit/bulk_update_request_test.rb

@@ -13,28 +13,6 @@ class BulkUpdateRequestTest < ActiveSupport::TestCase
       CurrentUser.ip_addr = nil
     end
 
-    context "#estimate_update_count" do
-      setup do
-        FactoryBot.create(:post, tag_string: "aaa")
-        FactoryBot.create(:post, tag_string: "bbb")
-        FactoryBot.create(:post, tag_string: "ccc")
-        FactoryBot.create(:post, tag_string: "ddd")
-        FactoryBot.create(:post, tag_string: "eee")
-
-        @script = "create alias aaa -> 000\n" +
-          "create implication bbb -> 111\n" +
-          "remove alias ccc -> 222\n" +
-          "remove implication ddd -> 333\n" +
-          "mass update eee -> 444\n"
-      end
-
-      subject { BulkUpdateRequest.new(script: @script) }
-
-      should "return the correct count" do
-        assert_equal(3, subject.estimate_update_count)
-      end
-    end
-
     context "#update_notice" do
       setup do
         @forum_topic = create(:forum_topic, creator: @admin)

test/unit/tag_alias_test.rb

@@ -57,17 +57,6 @@ class TagAliasTest < ActiveSupport::TestCase
       end
     end
 
-    context "#estimate_update_count" do
-      setup do
-        FactoryBot.create(:post, tag_string: "aaa bbb ccc")
-        @alias = FactoryBot.create(:tag_alias, antecedent_name: "aaa", consequent_name: "bbb", status: "pending")
-      end
-
-      should "get the right count" do
-        assert_equal(1, @alias.estimate_update_count)
-      end
-    end
-
     context "#update_notice" do
       setup do
         @forum_topic = FactoryBot.create(:forum_topic)

test/unit/tag_implication_test.rb

@@ -53,17 +53,6 @@ class TagImplicationTest < ActiveSupport::TestCase
       end
     end
 
-    context "#estimate_update_count" do
-      setup do
-        FactoryBot.create(:post, tag_string: "aaa bbb ccc")
-        @implication = FactoryBot.create(:tag_implication, antecedent_name: "aaa", consequent_name: "bbb", status: "pending")
-      end
-
-      should "get the right count" do
-        assert_equal(1, @implication.estimate_update_count)
-      end
-    end
-
     context "#update_notice" do
       setup do
         @forum_topic = FactoryBot.create(:forum_topic)