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	Refactor connect_listen for notifications
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					 2 changed files with 115 additions and 90 deletions
				
			
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			@ -186,6 +186,13 @@ spawn do
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  end
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end
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notification_channels = [] of Channel(PQ::Notification)
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PG.connect_listen(PG_URL, "notifications") do |event|
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  notification_channels.each do |channel|
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    channel.send(event)
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  end
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end
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proxies = PROXY_LIST
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before_all do |env|
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			@ -4457,17 +4464,37 @@ get "/api/v1/mixes/:rdid" do |env|
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end
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get "/api/v1/auth/notifications" do |env|
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  env.response.content_type = "text/event-stream"
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  topics = env.params.query["topics"]?.try &.split(",").uniq.first(1000)
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  topics ||= [] of String
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  create_notification_stream(env, proxies, config, Kemal.config, decrypt_function, topics)
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  notification_channel = Channel(PQ::Notification).new
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  notification_channels << notification_channel
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  begin
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    create_notification_stream(env, proxies, config, Kemal.config, decrypt_function, topics, notification_channel)
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  rescue ex
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  ensure
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    notification_channels.delete(notification_channel)
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  end
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end
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post "/api/v1/auth/notifications" do |env|
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  env.response.content_type = "text/event-stream"
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  topics = env.params.body["topics"]?.try &.split(",").uniq.first(1000)
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  topics ||= [] of String
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  create_notification_stream(env, proxies, config, Kemal.config, decrypt_function, topics)
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  notification_channel = Channel(PQ::Notification).new
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  notification_channels << notification_channel
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  begin
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    create_notification_stream(env, proxies, config, Kemal.config, decrypt_function, topics, notification_channel)
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  rescue ex
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  ensure
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    notification_channels.delete(notification_channel)
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  end
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end
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get "/api/v1/auth/preferences" do |env|
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			@ -661,89 +661,23 @@ def copy_in_chunks(input, output, chunk_size = 4096)
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  end
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end
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def create_notification_stream(env, proxies, config, kemal_config, decrypt_function, topics)
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def create_notification_stream(env, proxies, config, kemal_config, decrypt_function, topics, notification_channel)
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  locale = LOCALES[env.get("preferences").as(Preferences).locale]?
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  env.response.content_type = "text/event-stream"
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  since = env.params.query["since"]?.try &.to_i?
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  id = 0
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  begin
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    id = 0
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    if topics.includes? "debug"
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      spawn do
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        loop do
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          time_span = [0, 0, 0, 0]
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          time_span[rand(4)] = rand(30) + 5
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          published = Time.now - Time::Span.new(time_span[0], time_span[1], time_span[2], time_span[3])
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          video_id = TEST_IDS[rand(TEST_IDS.size)]
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          video = get_video(video_id, PG_DB, proxies)
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          video.published = published
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          response = JSON.parse(video.to_json(locale, config, kemal_config, decrypt_function))
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          if fields_text = env.params.query["fields"]?
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            begin
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              JSONFilter.filter(response, fields_text)
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            rescue ex
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              env.response.status_code = 400
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              response = {"error" => ex.message}
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            end
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          end
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          env.response.puts "id: #{id}"
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          env.response.puts "data: #{response.to_json}"
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          env.response.puts
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          env.response.flush
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          id += 1
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          sleep 1.minute
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        end
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      end
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    end
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  if topics.includes? "debug"
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    spawn do
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      if since
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        topics.try &.each do |topic|
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          case topic
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          when .match(/UC[A-Za-z0-9_-]{22}/)
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            PG_DB.query_all("SELECT * FROM channel_videos WHERE ucid = $1 AND published > $2 ORDER BY published DESC LIMIT 15",
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              topic, Time.unix(since.not_nil!), as: ChannelVideo).each do |video|
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              response = JSON.parse(video.to_json(locale, config, Kemal.config))
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              if fields_text = env.params.query["fields"]?
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                begin
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                  JSONFilter.filter(response, fields_text)
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                rescue ex
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                  env.response.status_code = 400
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                  response = {"error" => ex.message}
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                end
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              end
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              env.response.puts "id: #{id}"
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              env.response.puts "data: #{response.to_json}"
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              env.response.puts
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              env.response.flush
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              id += 1
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            end
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          else
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            # TODO
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          end
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        end
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      end
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      PG.connect_listen(PG_URL, "notifications") do |event|
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        notification = JSON.parse(event.payload)
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        topic = notification["topic"].as_s
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        video_id = notification["videoId"].as_s
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        published = notification["published"].as_i64
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      loop do
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        time_span = [0, 0, 0, 0]
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        time_span[rand(4)] = rand(30) + 5
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        published = Time.now - Time::Span.new(time_span[0], time_span[1], time_span[2], time_span[3])
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        video_id = TEST_IDS[rand(TEST_IDS.size)]
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        video = get_video(video_id, PG_DB, proxies)
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        video.published = Time.unix(published)
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        response = JSON.parse(video.to_json(locale, config, Kemal.config, decrypt_function))
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        video.published = published
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        response = JSON.parse(video.to_json(locale, config, kemal_config, decrypt_function))
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        if fields_text = env.params.query["fields"]?
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          begin
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			@ -754,24 +688,88 @@ def create_notification_stream(env, proxies, config, kemal_config, decrypt_funct
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          end
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        end
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        if topics.try &.includes? topic
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          env.response.puts "id: #{id}"
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          env.response.puts "data: #{response.to_json}"
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          env.response.puts
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          env.response.flush
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        env.response.puts "id: #{id}"
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        env.response.puts "data: #{response.to_json}"
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        env.response.puts
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        env.response.flush
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          id += 1
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        id += 1
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        sleep 1.minute
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      end
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    end
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  end
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  spawn do
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    if since
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      topics.try &.each do |topic|
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        case topic
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        when .match(/UC[A-Za-z0-9_-]{22}/)
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          PG_DB.query_all("SELECT * FROM channel_videos WHERE ucid = $1 AND published > $2 ORDER BY published DESC LIMIT 15",
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            topic, Time.unix(since.not_nil!), as: ChannelVideo).each do |video|
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            response = JSON.parse(video.to_json(locale, config, Kemal.config))
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            if fields_text = env.params.query["fields"]?
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              begin
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                JSONFilter.filter(response, fields_text)
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              rescue ex
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                env.response.status_code = 400
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                response = {"error" => ex.message}
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              end
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            end
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            env.response.puts "id: #{id}"
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            env.response.puts "data: #{response.to_json}"
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            env.response.puts
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            env.response.flush
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            id += 1
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          end
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        else
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          # TODO
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        end
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      end
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    end
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  end
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    # Send heartbeat
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  spawn do
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    loop do
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      env.response.puts ":keepalive #{Time.now.to_unix}"
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      env.response.puts
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      env.response.flush
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      sleep (20 + rand(11)).seconds
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      event = notification_channel.receive
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      notification = JSON.parse(event.payload)
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      topic = notification["topic"].as_s
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      video_id = notification["videoId"].as_s
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      published = notification["published"].as_i64
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      video = get_video(video_id, PG_DB, proxies)
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      video.published = Time.unix(published)
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      response = JSON.parse(video.to_json(locale, config, Kemal.config, decrypt_function))
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      if fields_text = env.params.query["fields"]?
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        begin
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          JSONFilter.filter(response, fields_text)
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        rescue ex
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          env.response.status_code = 400
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          response = {"error" => ex.message}
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        end
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      end
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      if topics.try &.includes? topic
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        env.response.puts "id: #{id}"
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        env.response.puts "data: #{response.to_json}"
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        env.response.puts
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        env.response.flush
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        id += 1
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      end
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    end
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  rescue
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  end
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  # Send heartbeat
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  loop do
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    env.response.puts ":keepalive #{Time.now.to_unix}"
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    env.response.puts
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    env.response.flush
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    sleep (20 + rand(11)).seconds
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  end
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end
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