app.rb

# frozen_string_literal: true

require 'cgi'
require 'dotenv'
require 'octokit'
require 'open-uri'
require 'require_all'
require 'sass'
require 'set'
require 'sinatra'
require 'yajl/json_gem'
require 'everypolitician'
require 'everypolitician/popolo'
require 'sinatra/reloader' if development?

require_relative './lib/popolo_helper'
require_relative './lib/html_helper'
require_rel './lib/page'

Dotenv.load
helpers Popolo::Helper
helpers HTMLHelper

set :erb, trim: '-'
set :main_url, 'http://everypolitician.org'
set :docs_url, 'http://docs.everypolitician.org'
set :datasource, ENV.fetch('DATASOURCE', 'https://github.com/everypolitician/everypolitician-data/raw/master/countries.json')
set :index, EveryPolitician::Index.new(index_url: settings.datasource)

configure :development do
  register Sinatra::Reloader
  also_reload 'lib/**/*.rb'
end

get '/' do
  @page = Page::Home.new(index: settings.index)
  erb :homepage
end

get '/countries.html' do
  @page = Page::Countries.new(index: settings.index)
  erb :countries
end

get '/:country/' do |country_slug|
  pass unless country = settings.index.country(country_slug)
  @page = Page::Country.new(country: country)
  erb :country
end

get '/:country/' do |country_slug|
  @page = Page::MissingCountry.new(country: country_slug)
  pass unless @page.country
  erb :country_missing
end

get '/:country/:house/' do |country_slug, house_slug|
  pass unless country = settings.index.country(country_slug)
  pass unless house   = country.legislature(house_slug)
  @page = Page::House.new(house: house)
  erb :house
end

get '/:country/:house/wikidata' do |country_slug, house_slug|
  pass unless country = settings.index.country(country_slug)
  pass unless house   = country.legislature(house_slug)
  @page = Page::HouseWikidata.new(house: house)
  erb :house_wikidata
end

get '/:country/:house/term-table/:id.html' do |country_slug, house_slug, termid|
  pass unless country = settings.index.country(country_slug)
  pass unless house   = country.legislature(house_slug)
  pass unless term    = house.term(termid)
  @page = Page::TermTable.new(term: term)
  erb :term_table
end

get '/:country/download.html' do |country_slug|
  pass unless country = settings.index.country(country_slug)
  @page = Page::Country.new(country: country)
  meta_redirect(URI.join(settings.main_url, "/#{country_slug}/"), @page.title)
end

get '/:country/:house/download.html' do |country_slug, house_slug|
  pass unless country = settings.index.country(country_slug)
  pass unless house   = country.legislature(house_slug)
  @page = Page::HouseDownload.new(house: house, index: settings.index)
  erb :house_download
end

get '/status/all_countries.html' do
  @page = Page::SpiderBase.new
  erb :spider_base
end

get '/needed.html' do
  @page = Page::Needed.new(access_token: ENV['GITHUB_ACCESS_TOKEN'])
  erb :needed
end

get '/*.css' do |filename|
  scss :"sass/#{filename}"
end

get '/styling' do
  erb :styling
end

get '/404.html' do
  erb :fourohfour
end

# Old doc pages are now at docs.everypolitician.org: redirect to them
get '/about.html' do
  docs_redirect('/', 'About')
end

set :docs_map, contribute:     'How to contribute',
               data_structure: 'About EveryPolitician’s data',
               data_summary:   'What’s in EveryPolitician’s data?',
               repo_structure: 'Getting the most recent data',
               scrapers:       'About writing scrapers',
               submitting:     'How we import data',
               technical:      'Technical overview',
               use_the_data:   'Use EveryPolitician data'

settings.docs_map.each do |page, text|
  path = '/%s.html' % page
  get path do
    docs_redirect(path, text)
  end
end

not_found do
  status 404
  erb :fourohfour
end

# Can't do server-side redirection on a GitHub Pages-hosted static site, so the
# kindest next-best-thing is to have a placeholder with meta HTTP-refresh.
# This works for humans (i.e., browsers parse and follow the redirect) but,
# because wget simply fetches the HTML document, this lets us continue to
# spider the site to generate the contents of everypolitician/viewer-static.
# See scripts/release.sh (build_viewer_static).
def docs_redirect(path, page_title)
  meta_redirect(URI.join(settings.docs_url, path), page_title)
end

def meta_redirect(uri, page_title)
  @url = uri
  @head_tags = [
    %(<meta http-equiv="refresh" content="0; url=#{@url}">),
    %(<link rel="canonical" href="#{@url}"/>),
  ].join("\n\t")
  @page_title = page_title
  erb :redirect
end