90 lines
2.4 KiB
Ruby
90 lines
2.4 KiB
Ruby
require 'roda'
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require 'securerandom'
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require 'json'
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require 'sequel'
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require 'open-uri'
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class App < Roda
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plugin :sessions, secret: ENV.delete('APP_SESSION_SECRET')
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plugin :render, escape: true
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plugin :flash
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plugin :json_parser
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plugin :request_headers
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DB = Sequel.sqlite("db/#{ENV['DB_NAME']}")
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links = DB[:links]
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route do |r|
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r.root do
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@message = flash['message'] || "Enter a URL"
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view :home
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end
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r.get String do | url_code |
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link = links.filter(:code => url_code)
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r.redirect link.first[:url] unless link.first.nil?
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@message = "Link #{url_code} doesn't exist"
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response.status = 404
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view :home
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end
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r.post "create" do
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url = r.params['url']
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if url.nil? or url.empty?
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flash['message'] = "Please enter a valid URL";
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r.redirect '/'
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end
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if links.filter(:url => url).first.nil?
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code = SecureRandom.urlsafe_base64 4
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links.insert(url: url, code: code)
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@message = "Link created"
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end
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code = links.filter(:url => url).first[:code]
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@message ||= "Link exists"
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@new_link = 'http://' + request.env['HTTP_HOST'] + '/' + code
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view :create
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end
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r.on "links" do
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r.post do
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if 'application/json' != r.headers['CONTENT_TYPE']
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response.status = 400
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return {message: "not a valid json request"}.to_json
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end
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url = r.params['url']
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if url.nil?
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response.status = 400
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return {message: "missing url parameter"}.to_json
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end
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if url.empty?
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response.status = 400
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return {message: "invalid url parameter"}.to_json
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end
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begin
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OpenURI.open_uri(url)
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rescue URI::BadURIError
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response.status = 400
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return {message: "invalid url parameter"}.to_json
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rescue OpenURI::HTTPError
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response.status = 400
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return {message: "url not found"}.to_json
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rescue SocketError => e
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response.status = 400
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return {message: "url does not resolve"}.to_json
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end
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if links.filter(:url => url).first.nil?
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code = SecureRandom.urlsafe_base64 4
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links.insert(url: url, code: code)
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end
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code = links.filter(:url => url).first[:code]
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@new_link = 'http://' + request.env['HTTP_HOST'] + '/' + code
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return {url: url, code: code, link: @new_link}.to_json
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end
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end
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end
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end
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