added ability to link accounts with `account:link:token` + `account:link:add` & switch between them with `i:am`/`we:are` bangtags; remove links with `account:link:del:USERNAME` or `account:link:clear`; list links with `account:link:list`

2 files changed, 25 insertions, 1 deletions

diff --git a/db/migrate/20190805203816_create_linked_users.rb b/db/migrate/20190805203816_create_linked_users.rb
new file mode 100644
index 000000000..36744fed6
--- /dev/null
+++ b/db/migrate/20190805203816_create_linked_users.rb
@@ -0,0 +1,12 @@
+class CreateLinkedUsers < ActiveRecord::Migration[5.2]
+  def change
+    create_table :linked_users do |t|
+      t.references :user, foreign_key: { on_delete: :cascade }
+      t.references :target_user, foreign_key: { to_table: 'users', on_delete: :cascade }
+
+      t.timestamps
+    end
+
+    add_index :linked_users , [:user_id, :target_user_id], :unique => true
+  end
+end
diff --git a/db/schema.rb b/db/schema.rb
index 407e1038f..3c2664db5 100644
--- a/db/schema.rb
+++ b/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: 2019_08_05_064643) do
+ActiveRecord::Schema.define(version: 2019_08_05_203816) do
 
   # These are extensions that must be enabled in order to support this database
   enable_extension "plpgsql"
@@ -361,6 +361,16 @@ ActiveRecord::Schema.define(version: 2019_08_05_064643) do
     t.index ["user_id"], name: "index_invites_on_user_id"
   end
 
+  create_table "linked_users", force: :cascade do |t|
+    t.bigint "user_id"
+    t.bigint "target_user_id"
+    t.datetime "created_at", null: false
+    t.datetime "updated_at", null: false
+    t.index ["target_user_id"], name: "index_linked_users_on_target_user_id"
+    t.index ["user_id", "target_user_id"], name: "index_linked_users_on_user_id_and_target_user_id", unique: true
+    t.index ["user_id"], name: "index_linked_users_on_user_id"
+  end
+
   create_table "list_accounts", force: :cascade do |t|
     t.bigint "list_id", null: false
     t.bigint "account_id", null: false
@@ -827,6 +837,8 @@ ActiveRecord::Schema.define(version: 2019_08_05_064643) do
   add_foreign_key "identities", "users", name: "fk_bea040f377", on_delete: :cascade
   add_foreign_key "imports", "accounts", name: "fk_6db1b6e408", on_delete: :cascade
   add_foreign_key "invites", "users", on_delete: :cascade
+  add_foreign_key "linked_users", "users", column: "target_user_id", on_delete: :cascade
+  add_foreign_key "linked_users", "users", on_delete: :cascade
   add_foreign_key "list_accounts", "accounts", on_delete: :cascade
   add_foreign_key "list_accounts", "follows", on_delete: :cascade
   add_foreign_key "list_accounts", "lists", on_delete: :cascade