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# frozen_string_literal: true
class ApiController < ApplicationController
DEFAULT_STATUSES_LIMIT = 20
DEFAULT_ACCOUNTS_LIMIT = 40
protect_from_forgery with: :null_session
skip_before_action :verify_authenticity_token
before_action :set_rate_limit_headers
rescue_from ActiveRecord::RecordInvalid, Mastodon::ValidationError do |e|
render json: { error: e.to_s }, status: 422
end
rescue_from ActiveRecord::RecordNotFound do
render json: { error: 'Record not found' }, status: 404
end
rescue_from Goldfinger::Error do
render json: { error: 'Remote account could not be resolved' }, status: 422
end
rescue_from HTTP::Error do
render json: { error: 'Remote data could not be fetched' }, status: 503
end
rescue_from OpenSSL::SSL::SSLError do
render json: { error: 'Remote SSL certificate could not be verified' }, status: 503
end
rescue_from Mastodon::NotPermittedError do
render json: { error: 'This action is not allowed' }, status: 403
end
def doorkeeper_unauthorized_render_options(error: nil)
{ json: { error: (error.try(:description) || 'Not authorized') } }
end
def doorkeeper_forbidden_render_options(*)
{ json: { error: 'This action is outside the authorized scopes' } }
end
protected
def set_rate_limit_headers
return if request.env['rack.attack.throttle_data'].nil?
now = Time.now.utc
match_data = request.env['rack.attack.throttle_data']['api']
response.headers['X-RateLimit-Limit'] = match_data[:limit].to_s
response.headers['X-RateLimit-Remaining'] = (match_data[:limit] - match_data[:count]).to_s
response.headers['X-RateLimit-Reset'] = (now + (match_data[:period] - now.to_i % match_data[:period])).iso8601(6)
end
def set_pagination_headers(next_path = nil, prev_path = nil)
links = []
links << [next_path, [%w(rel next)]] if next_path
links << [prev_path, [%w(rel prev)]] if prev_path
response.headers['Link'] = LinkHeader.new(links)
end
def limit_param(default_limit)
return default_limit unless params[:limit]
[params[:limit].to_i.abs, default_limit * 2].min
end
def current_resource_owner
@current_user ||= User.find(doorkeeper_token.resource_owner_id) if doorkeeper_token
end
def current_user
super || current_resource_owner
rescue ActiveRecord::RecordNotFound
nil
end
def require_user!
current_resource_owner
set_user_activity
rescue ActiveRecord::RecordNotFound
render json: { error: 'This method requires an authenticated user' }, status: 422
end
def render_empty
render json: {}, status: 200
end
def set_maps(statuses) # rubocop:disable Style/AccessorMethodName
if current_account.nil?
@reblogs_map = {}
@favourites_map = {}
return
end
status_ids = statuses.compact.flat_map { |s| [s.id, s.reblog_of_id] }.uniq
@reblogs_map = Status.reblogs_map(status_ids, current_account)
@favourites_map = Status.favourites_map(status_ids, current_account)
end
def set_counters_maps(statuses) # rubocop:disable Style/AccessorMethodName
status_ids = statuses.compact.map { |s| s.reblog? ? s.reblog_of_id : s.id }.uniq
@favourites_counts_map = Favourite.select('status_id, COUNT(*) AS favourites_count').group('status_id').where(status_id: status_ids).map { |f| [f.status_id, f.favourites_count] }.to_h
@reblogs_counts_map = Status.select('statuses.id, COUNT(*) AS reblogs_count').joins('LEFT OUTER JOIN statuses AS reblogs ON statuses.id = reblogs.reblog_of_id').where(id: status_ids).group('statuses.id').map { |r| [r.id, r.reblogs_count] }.to_h
end
def set_account_counters_maps(accounts) # rubocop:disable Style/AccessorMethodName
account_ids = accounts.compact.map(&:id).uniq
@followers_counts_map = Follow.unscoped.select('target_account_id, COUNT(*) AS followers_count').group('target_account_id').where(target_account_id: account_ids).map { |f| [f.target_account_id, f.followers_count] }.to_h
@following_counts_map = Follow.unscoped.select('account_id, COUNT(*) AS following_count').group('account_id').where(account_id: account_ids).map { |f| [f.account_id, f.following_count] }.to_h
@statuses_counts_map = Status.unscoped.select('account_id, COUNT(*) AS statuses_count').group('account_id').where(account_id: account_ids).map { |s| [s.account_id, s.statuses_count] }.to_h
end
end
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