mastodon/app/controllers/api/v1/media_controller.rb

# frozen_string_literal: true

class Api::V1::MediaController < ApiController
  before_action -> { doorkeeper_authorize! :write }
  before_action :require_user!

  respond_to :json

  def create
    file = params[:file]
    # Change so Paperclip won't expose the actual filename
    file.original_filename = "media" + File.extname(file.original_filename)
    @media = MediaAttachment.create!(account: current_user.account, file: file)
  rescue Paperclip::Errors::NotIdentifiedByImageMagickError
    render json: { error: 'File type of uploaded media could not be verified' }, status: 422
  rescue Paperclip::Error
    render json: { error: 'Error processing thumbnail for uploaded media' }, status: 500
  end
end