Improve admin page (#4121)

* Improve admin page

* Fix test

* Add spec

* Improve select style

app/controllers/admin/statuses_controller.rb

@@ -0,0 +1,69 @@
+# frozen_string_literal: true
+
+module Admin
+  class StatusesController < BaseController
+    include Authorization
+
+    helper_method :current_params
+
+    before_action :set_account
+    before_action :set_status, only: [:update, :destroy]
+
+    PAR_PAGE = 20
+
+    def index
+      @statuses = @account.statuses
+      if params[:media]
+        account_media_status_ids = @account.media_attachments.attached.reorder(nil).select(:status_id).distinct
+        @statuses.merge!(Status.where(id: account_media_status_ids))
+      end
+      @statuses = @statuses.preload(:media_attachments, :mentions).page(params[:page]).per(PAR_PAGE)
+
+      @form = Form::StatusBatch.new
+    end
+
+    def create
+      @form = Form::StatusBatch.new(form_status_batch_params)
+      flash[:alert] = t('admin.statuses.failed_to_execute') unless @form.save
+
+      redirect_to admin_account_statuses_path(@account.id, current_params)
+    end
+
+    def update
+      @status.update(status_params)
+      redirect_to admin_account_statuses_path(@account.id, current_params)
+    end
+
+    def destroy
+      authorize @status, :destroy?
+      RemovalWorker.perform_async(@status.id)
+      render json: @status
+    end
+
+    private
+
+    def status_params
+      params.require(:status).permit(:sensitive)
+    end
+
+    def form_status_batch_params
+      params.require(:form_status_batch).permit(:action, status_ids: [])
+    end
+
+    def set_status
+      @status = @account.statuses.find(params[:id])
+    end
+
+    def set_account
+      @account = Account.find(params[:account_id])
+    end
+
+    def current_params
+      page = (params[:page] || 1).to_i
+      {
+        media: params[:media],
+        page: page > 1 && page,
+      }.select { |_, value| value.present? }
+    end
+  end
+end