Add appeals (#17364)

* Add appeals

* Add ability to reject appeals and ability to browse pending appeals in admin UI

* Add strikes to account page in settings

* Various fixes and improvements

- Add separate notification setting for appeals, separate from reports
- Fix style of links in report/strike header
- Change approving an appeal to not restore statuses (due to federation complexities)
- Change style of successfully appealed strikes on account settings page
- Change account settings page to only show unappealed or recently appealed strikes

* Change appealed_at to overruled_at

* Fix missing method error

db/migrate/20220124141035_create_appeals.rb

@@ -0,0 +1,14 @@
+class CreateAppeals < ActiveRecord::Migration[6.1]
+  def change
+    create_table :appeals do |t|
+      t.belongs_to :account, null: false, foreign_key: { on_delete: :cascade }
+      t.belongs_to :account_warning, null: false, foreign_key: { on_delete: :cascade }, index: { unique: true }
+      t.text :text, null: false, default: ''
+      t.datetime :approved_at
+      t.belongs_to :approved_by_account, foreign_key: { to_table: :accounts, on_delete: :nullify }
+      t.datetime :rejected_at
+      t.belongs_to :rejected_by_account, foreign_key: { to_table: :accounts, on_delete: :nullify }
+      t.timestamps
+    end
+  end
+end

db/migrate/20220210153119_add_overruled_at_to_account_warnings.rb

@@ -0,0 +1,5 @@
+class AddOverruledAtToAccountWarnings < ActiveRecord::Migration[6.1]
+  def change
+    add_column :account_warnings, :overruled_at, :datetime
+  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: 2022_01_18_183123) do
+ActiveRecord::Schema.define(version: 2022_02_10_153119) do
 
   # These are extensions that must be enabled in order to support this database
   enable_extension "plpgsql"
@@ -135,6 +135,7 @@ ActiveRecord::Schema.define(version: 2022_01_18_183123) do
     t.datetime "updated_at", null: false
     t.bigint "report_id"
     t.string "status_ids", array: true
+    t.datetime "overruled_at"
     t.index ["account_id"], name: "index_account_warnings_on_account_id"
     t.index ["target_account_id"], name: "index_account_warnings_on_target_account_id"
   end
@@ -243,6 +244,22 @@ ActiveRecord::Schema.define(version: 2022_01_18_183123) do
     t.bigint "status_ids", array: true
   end
 
+  create_table "appeals", force: :cascade do |t|
+    t.bigint "account_id", null: false
+    t.bigint "account_warning_id", null: false
+    t.text "text", default: "", null: false
+    t.datetime "approved_at"
+    t.bigint "approved_by_account_id"
+    t.datetime "rejected_at"
+    t.bigint "rejected_by_account_id"
+    t.datetime "created_at", precision: 6, null: false
+    t.datetime "updated_at", precision: 6, null: false
+    t.index ["account_id"], name: "index_appeals_on_account_id"
+    t.index ["account_warning_id"], name: "index_appeals_on_account_warning_id", unique: true
+    t.index ["approved_by_account_id"], name: "index_appeals_on_approved_by_account_id"
+    t.index ["rejected_by_account_id"], name: "index_appeals_on_rejected_by_account_id"
+  end
+
   create_table "backups", force: :cascade do |t|
     t.bigint "user_id"
     t.string "dump_file_name"
@@ -1031,6 +1048,10 @@ ActiveRecord::Schema.define(version: 2022_01_18_183123) do
   add_foreign_key "announcement_reactions", "accounts", on_delete: :cascade
   add_foreign_key "announcement_reactions", "announcements", on_delete: :cascade
   add_foreign_key "announcement_reactions", "custom_emojis", on_delete: :cascade
+  add_foreign_key "appeals", "account_warnings", on_delete: :cascade
+  add_foreign_key "appeals", "accounts", column: "approved_by_account_id", on_delete: :nullify
+  add_foreign_key "appeals", "accounts", column: "rejected_by_account_id", on_delete: :nullify
+  add_foreign_key "appeals", "accounts", on_delete: :cascade
   add_foreign_key "backups", "users", on_delete: :nullify
   add_foreign_key "blocks", "accounts", column: "target_account_id", name: "fk_9571bfabc1", on_delete: :cascade
   add_foreign_key "blocks", "accounts", name: "fk_4269e03e65", on_delete: :cascade