Merge branch 'master' into glitch-soc/merge-upstream

Conflicts:
- `app/services/resolve_url_service.rb`:
  The private toot search by URL hack has been revamped upstream.
  Took upstream's version.

db/migrate/20200620164023_add_fixed_lowercase_index_to_accounts.rb

@@ -1,10 +1,30 @@
 class AddFixedLowercaseIndexToAccounts < ActiveRecord::Migration[5.2]
   disable_ddl_transaction!
 
+  class CorruptionError < StandardError
+    def cause
+      nil
+    end
+
+    def backtrace
+      []
+    end
+  end
+
   def up
-    rename_index :accounts, 'index_accounts_on_username_and_domain_lower', 'old_index_accounts_on_username_and_domain_lower' unless index_name_exists?(:accounts, 'old_index_accounts_on_username_and_domain_lower')
-    add_index :accounts, "lower (username), COALESCE(lower(domain), '')", name: 'index_accounts_on_username_and_domain_lower', unique: true, algorithm: :concurrently
-    remove_index :accounts, name: 'old_index_accounts_on_username_and_domain_lower'
+    if index_name_exists?(:accounts, 'old_index_accounts_on_username_and_domain_lower') && index_name_exists?(:accounts, 'index_accounts_on_username_and_domain_lower')
+      remove_index :accounts, name: 'index_accounts_on_username_and_domain_lower'
+    elsif index_name_exists?(:accounts, 'index_accounts_on_username_and_domain_lower')
+      rename_index :accounts, 'index_accounts_on_username_and_domain_lower', 'old_index_accounts_on_username_and_domain_lower'
+    end
+
+    begin
+      add_index :accounts, "lower (username), COALESCE(lower(domain), '')", name: 'index_accounts_on_username_and_domain_lower', unique: true, algorithm: :concurrently
+    rescue ActiveRecord::RecordNotUnique
+      raise CorruptionError, 'Migration failed because of index corruption, see https://docs.joinmastodon.org/admin/troubleshooting/index-corruption/#fixing'
+    end
+
+    remove_index :accounts, name: 'old_index_accounts_on_username_and_domain_lower' if index_name_exists?(:accounts, 'old_index_accounts_on_username_and_domain_lower')
   end
 
   def down

db/migrate/20201218054746_add_obfuscate_to_domain_blocks.rb

@@ -0,0 +1,15 @@
+require Rails.root.join('lib', 'mastodon', 'migration_helpers')
+
+class AddObfuscateToDomainBlocks < ActiveRecord::Migration[5.2]
+  include Mastodon::MigrationHelpers
+
+  disable_ddl_transaction!
+
+  def up
+    safety_assured { add_column_with_default :domain_blocks, :obfuscate, :boolean, default: false, allow_null: false }
+  end
+
+  def down
+    remove_column :domain_blocks, :obfuscate
+  end
+end

db/schema.rb

@@ -10,7 +10,7 @@
 #
 # It's strongly recommended that you check this file into your version control system.
 
-ActiveRecord::Schema.define(version: 2020_12_06_004238) do
+ActiveRecord::Schema.define(version: 2020_12_18_054746) do
 
   # These are extensions that must be enabled in order to support this database
   enable_extension "plpgsql"
@@ -360,6 +360,7 @@ ActiveRecord::Schema.define(version: 2020_12_06_004238) do
     t.boolean "reject_reports", default: false, null: false
     t.text "private_comment"
     t.text "public_comment"
+    t.boolean "obfuscate", default: false, null: false
     t.index ["domain"], name: "index_domain_blocks_on_domain", unique: true
   end