[Privacy] Implement thread ownership and visibility

4 files changed, 46 insertions, 0 deletions

diff --git a/db/migrate/20200721202723_add_account_id_to_conversations.rb b/db/migrate/20200721202723_add_account_id_to_conversations.rb
new file mode 100644
index 000000000..afddf4823
--- /dev/null
+++ b/db/migrate/20200721202723_add_account_id_to_conversations.rb
@@ -0,0 +1,9 @@
+class AddAccountIdToConversations < ActiveRecord::Migration[5.2]
+  disable_ddl_transaction!
+
+  def change
+    safety_assured do
+      add_reference :conversations, :account, foreign_key: true, index: {algorithm: :concurrently}
+    end
+  end
+end
diff --git a/db/migrate/20200721212401_backfill_account_id_on_conversations.rb b/db/migrate/20200721212401_backfill_account_id_on_conversations.rb
new file mode 100644
index 000000000..595fd8e52
--- /dev/null
+++ b/db/migrate/20200721212401_backfill_account_id_on_conversations.rb
@@ -0,0 +1,15 @@
+class BackfillAccountIdOnConversations < ActiveRecord::Migration[5.2]
+  disable_ddl_transaction!
+
+  def up
+    Rails.logger.info('Backfilling owners of conversation threads...')
+    safety_assured do
+      Conversation.left_outer_joins(:statuses).where(statuses: { id: nil }).in_batches.destroy_all
+      execute('UPDATE conversations SET account_id = s.account_id FROM (SELECT account_id, conversation_id FROM statuses WHERE NOT reply) AS s WHERE conversations.id = s.conversation_id')
+    end
+  end
+
+  def down
+    true
+  end
+end
diff --git a/db/migrate/20200721221427_add_public_to_conversations.rb b/db/migrate/20200721221427_add_public_to_conversations.rb
new file mode 100644
index 000000000..392bd7418
--- /dev/null
+++ b/db/migrate/20200721221427_add_public_to_conversations.rb
@@ -0,0 +1,7 @@
+class AddPublicToConversations < ActiveRecord::Migration[5.2]
+  def change
+    safety_assured do
+      add_column :conversations, :public, :boolean, default: false, null: false
+    end
+  end
+end
diff --git a/db/migrate/20200721221659_backfill_conversation_visibility.rb b/db/migrate/20200721221659_backfill_conversation_visibility.rb
new file mode 100644
index 000000000..93394b825
--- /dev/null
+++ b/db/migrate/20200721221659_backfill_conversation_visibility.rb
@@ -0,0 +1,15 @@
+class BackfillConversationVisibility < ActiveRecord::Migration[5.2]
+  disable_ddl_transaction!
+
+  def up
+    Rails.logger.info('Backfilling thread visibility...')
+
+    safety_assured do
+      execute('UPDATE conversations SET public = true FROM (SELECT account_id, conversation_id FROM statuses WHERE NOT reply AND visibility IN (0, 1)) AS s WHERE conversations.id = s.conversation_id')
+    end
+  end
+
+  def down
+    true
+  end
+end