Acquisition channel (#4489)

* WIP

* Add acquisition channel

* Add detection for gclid and msclkid

* Add GA4 source categories file as external resource

lib/plausible/clickhouse_event_v2.ex

@@ -26,6 +26,7 @@ defmodule Plausible.ClickhouseEventV2 do
     # Session attributes
     field :referrer, :string
     field :referrer_source, :string
+    field :channel, Ch, type: "LowCardinality(String)"
     field :utm_medium, :string
     field :utm_source, :string
     field :utm_campaign, :string
@@ -70,6 +71,7 @@ defmodule Plausible.ClickhouseEventV2 do
     :session_id,
     :referrer,
     :referrer_source,
+    :channel,
     :utm_medium,
     :utm_source,
     :utm_campaign,

lib/plausible/clickhouse_session_v2.ex

@@ -58,6 +58,7 @@ defmodule Plausible.ClickhouseSessionV2 do
     field :utm_term, :string
     field :referrer, :string
     field :referrer_source, :string
+    field :channel, Ch, type: "LowCardinality(String)"
 
     field :country_code, Ch, type: "LowCardinality(FixedString(2))"
     field :subdivision1_code, Ch, type: "LowCardinality(String)"

lib/plausible/ingestion/acquisition.ex

@@ -1,5 +1,11 @@
 defmodule Plausible.Ingestion.Acquisition do
   @moduledoc false
+  @external_resource "priv/ga4-source-categories.csv"
+  @source_categories Application.app_dir(:plausible, "priv/ga4-source-categories.csv")
+                     |> File.read!()
+                     |> NimbleCSV.RFC4180.parse_string(skip_headers: false)
+                     |> Enum.map(fn [source, category] -> {source, category} end)
+                     |> Enum.into(%{})
 
   def init() do
     :ets.new(__MODULE__, [
@@ -24,4 +30,149 @@ defmodule Plausible.Ingestion.Acquisition do
       _ -> source
     end
   end
+
+  def get_channel(request, source) do
+    cond do
+      cross_network?(request) -> "Cross-network"
+      paid_shopping?(request, source) -> "Paid Shopping"
+      paid_search?(request, source) -> "Paid Search"
+      paid_social?(request, source) -> "Paid Social"
+      paid_video?(request, source) -> "Paid Video"
+      display?(request) -> "Display"
+      paid_other?(request) -> "Paid Other"
+      organic_shopping?(request, source) -> "Organic Shopping"
+      organic_social?(request, source) -> "Organic Social"
+      organic_video?(request, source) -> "Organic Video"
+      search_source?(source) -> "Organic Search"
+      email?(request) -> "Email"
+      affiliates?(request) -> "Affiliates"
+      audio?(request) -> "Audio"
+      sms?(request) -> "SMS"
+      mobile_push_notifications?(request, source) -> "Mobile Push Notifications"
+      referral?(request, source) -> "Referral"
+      true -> "Direct"
+    end
+  end
+
+  defp cross_network?(request) do
+    String.contains?(request.query_params["utm_campaign"] || "", "cross-network")
+  end
+
+  defp paid_shopping?(request, source) do
+    (shopping_source?(source) or shopping_campaign?(request.query_params["utm_campaign"])) and
+      paid_medium?(request.query_params["utm_medium"])
+  end
+
+  defp paid_search?(request, source) do
+    (search_source?(source) and paid_medium?(request.query_params["utm_medium"])) or
+      (source == "Google" and !!request.query_params["gclid"]) or
+      (source == "Bing" and !!request.query_params["msclkid"])
+  end
+
+  defp paid_social?(request, source) do
+    social_source?(source) and paid_medium?(request.query_params["utm_medium"])
+  end
+
+  defp paid_video?(request, source) do
+    video_source?(source) and paid_medium?(request.query_params["utm_medium"])
+  end
+
+  defp display?(request) do
+    request.query_params["utm_medium"] in [
+      "display",
+      "banner",
+      "expandable",
+      "interstitial",
+      "cpm"
+    ]
+  end
+
+  defp paid_other?(request) do
+    paid_medium?(request.query_params["utm_medium"])
+  end
+
+  defp organic_shopping?(request, source) do
+    shopping_source?(source) or shopping_campaign?(request.query_params["utm_campaign"])
+  end
+
+  defp organic_social?(request, source) do
+    social_source?(source) or
+      request.query_params["utm_medium"] in [
+        "social",
+        "social-network",
+        "social-media",
+        "sm",
+        "social network",
+        "social media"
+      ]
+  end
+
+  defp organic_video?(request, source) do
+    video_source?(source) or String.contains?(request.query_params["utm_medium"] || "", "video")
+  end
+
+  defp referral?(request, source) do
+    request.query_params["utm_medium"] in ["referral", "app", "link"] or
+      !!source
+  end
+
+  @email_tags ["email", "e-mail", "e_mail", "e mail"]
+  defp email?(request) do
+    String.contains?(request.query_params["utm_source"] || "", @email_tags) or
+      String.contains?(request.query_params["utm_medium"] || "", @email_tags)
+  end
+
+  defp affiliates?(request) do
+    request.query_params["utm_medium"] == "affiliate"
+  end
+
+  defp audio?(request) do
+    request.query_params["utm_medium"] == "audio"
+  end
+
+  defp sms?(request) do
+    request.query_params["utm_source"] == "sms" or
+      request.query_params["utm_medium"] == "sms"
+  end
+
+  defp mobile_push_notifications?(request, source) do
+    medium = request.query_params["utm_medium"] || ""
+
+    String.ends_with?(medium, "push") or
+      String.contains?(medium, ["mobile", "notification"]) or
+      source == "firebase"
+  end
+
+  # # Helper functions for source and medium checks
+  defp shopping_source?(nil), do: false
+
+  defp shopping_source?(source) do
+    @source_categories[String.downcase(source)] == "SOURCE_CATEGORY_SHOPPING"
+  end
+
+  defp shopping_campaign?(campaign_name) do
+    Regex.match?(~r/^(.*(([^a-df-z]|^)shop|shopping).*)$/, campaign_name || "")
+  end
+
+  defp search_source?(nil), do: false
+
+  defp search_source?(source) do
+    @source_categories[String.downcase(source)] == "SOURCE_CATEGORY_SEARCH"
+  end
+
+  defp social_source?(nil), do: false
+
+  defp social_source?(source) do
+    @source_categories[String.downcase(source)] == "SOURCE_CATEGORY_SOCIAL"
+  end
+
+  defp video_source?(nil), do: false
+
+  defp video_source?(source) do
+    @source_categories[String.downcase(source)] == "SOURCE_CATEGORY_VIDEO"
+  end
+
+  defp paid_medium?(medium) do
+    Regex.match?(~r/^(.*cp.*|ppc|retargeting|paid.*)$/, medium || "")
+  end
 end

lib/plausible/ingestion/event.ex

@@ -250,9 +250,12 @@ defmodule Plausible.Ingestion.Event do
 
   defp put_referrer(%__MODULE__{} = event) do
     ref = parse_referrer(event.request.uri, event.request.referrer)
+    source = get_referrer_source(event.request, ref)
+    channel = Plausible.Ingestion.Acquisition.get_channel(event.request, source)
 
     update_session_attrs(event, %{
-      referrer_source: get_referrer_source(event.request, ref),
+      channel: channel,
+      referrer_source: source,
       referrer: clean_referrer(ref)
     })
   end

lib/plausible/session/cache_store.ex

@@ -95,6 +95,7 @@ defmodule Plausible.Session.CacheStore do
       pageviews: if(event.name == "pageview", do: 1, else: 0),
       events: 1,
       referrer: Map.get(session_attributes, :referrer),
+      channel: Map.get(session_attributes, :channel),
       referrer_source: Map.get(session_attributes, :referrer_source),
       utm_medium: Map.get(session_attributes, :utm_medium),
       utm_source: Map.get(session_attributes, :utm_source),

priv/ga4-source-categories.csv

@@ -0,0 +1,820 @@
+source,source category
+360.cn,SOURCE_CATEGORY_SEARCH
+43things,SOURCE_CATEGORY_SOCIAL
+43things.com,SOURCE_CATEGORY_SOCIAL
+51.com,SOURCE_CATEGORY_SOCIAL
+5ch.net,SOURCE_CATEGORY_SOCIAL
+Google Shopping,SOURCE_CATEGORY_SHOPPING
+Hatena,SOURCE_CATEGORY_SOCIAL
+IGShopping,SOURCE_CATEGORY_SHOPPING
+ImageShack,SOURCE_CATEGORY_SOCIAL
+aax-us-east.amazon-adsystem.com,SOURCE_CATEGORY_SHOPPING
+aax.amazon-adsystem.com,SOURCE_CATEGORY_SHOPPING
+academia.edu,SOURCE_CATEGORY_SOCIAL
+activerain,SOURCE_CATEGORY_SOCIAL
+activerain.com,SOURCE_CATEGORY_SOCIAL
+activeworlds,SOURCE_CATEGORY_SOCIAL
+activeworlds.com,SOURCE_CATEGORY_SOCIAL
+addthis,SOURCE_CATEGORY_SOCIAL
+addthis.com,SOURCE_CATEGORY_SOCIAL
+airg.ca,SOURCE_CATEGORY_SOCIAL
+alibaba,SOURCE_CATEGORY_SHOPPING
+alibaba.com,SOURCE_CATEGORY_SHOPPING
+alice,SOURCE_CATEGORY_SEARCH
+allnurses.com,SOURCE_CATEGORY_SOCIAL
+allrecipes.com,SOURCE_CATEGORY_SOCIAL
+alumniclass,SOURCE_CATEGORY_SOCIAL
+alumniclass.com,SOURCE_CATEGORY_SOCIAL
+amazon,SOURCE_CATEGORY_SHOPPING
+amazon.co.uk,SOURCE_CATEGORY_SHOPPING
+amazon.com,SOURCE_CATEGORY_SHOPPING
+ameba.jp,SOURCE_CATEGORY_SOCIAL
+ameblo.jp,SOURCE_CATEGORY_SOCIAL
+americantowns,SOURCE_CATEGORY_SOCIAL
+americantowns.com,SOURCE_CATEGORY_SOCIAL
+amp.reddit.com,SOURCE_CATEGORY_SOCIAL
+ancestry.com,SOURCE_CATEGORY_SOCIAL
+anobii,SOURCE_CATEGORY_SOCIAL
+anobii.com,SOURCE_CATEGORY_SOCIAL
+answerbag,SOURCE_CATEGORY_SOCIAL
+answerbag.com,SOURCE_CATEGORY_SOCIAL
+answers.yahoo.com,SOURCE_CATEGORY_SOCIAL
+aol,SOURCE_CATEGORY_SEARCH
+aolanswers,SOURCE_CATEGORY_SOCIAL
+aolanswers.com,SOURCE_CATEGORY_SOCIAL
+apps.facebook.com,SOURCE_CATEGORY_SOCIAL
+apps.shopify.com,SOURCE_CATEGORY_SHOPPING
+ar.pinterest.com,SOURCE_CATEGORY_SOCIAL
+ar.search.yahoo.com,SOURCE_CATEGORY_SEARCH
+artstation.com,SOURCE_CATEGORY_SOCIAL
+ask,SOURCE_CATEGORY_SEARCH
+askubuntu,SOURCE_CATEGORY_SOCIAL
+askubuntu.com,SOURCE_CATEGORY_SOCIAL
+asmallworld.com,SOURCE_CATEGORY_SOCIAL
+at.search.yahoo.com,SOURCE_CATEGORY_SEARCH
+athlinks,SOURCE_CATEGORY_SOCIAL
+athlinks.com,SOURCE_CATEGORY_SOCIAL
+au.search.yahoo.com,SOURCE_CATEGORY_SEARCH
+auone,SOURCE_CATEGORY_SEARCH
+avg,SOURCE_CATEGORY_SEARCH
+away.vk.com,SOURCE_CATEGORY_SOCIAL
+awe.sm,SOURCE_CATEGORY_SOCIAL
+b.hatena.ne.jp,SOURCE_CATEGORY_SOCIAL
+baby-gaga,SOURCE_CATEGORY_SOCIAL
+baby-gaga.com,SOURCE_CATEGORY_SOCIAL
+babyblog.ru,SOURCE_CATEGORY_SOCIAL
+babylon,SOURCE_CATEGORY_SEARCH
+badoo,SOURCE_CATEGORY_SOCIAL
+badoo.com,SOURCE_CATEGORY_SOCIAL
+baidu,SOURCE_CATEGORY_SEARCH
+bebo,SOURCE_CATEGORY_SOCIAL
+bebo.com,SOURCE_CATEGORY_SOCIAL
+beforeitsnews,SOURCE_CATEGORY_SOCIAL
+beforeitsnews.com,SOURCE_CATEGORY_SOCIAL
+bharatstudent,SOURCE_CATEGORY_SOCIAL
+bharatstudent.com,SOURCE_CATEGORY_SOCIAL
+biglobe,SOURCE_CATEGORY_SEARCH
+biglobe.co.jp,SOURCE_CATEGORY_SEARCH
+biglobe.ne.jp,SOURCE_CATEGORY_SEARCH
+biip.no,SOURCE_CATEGORY_SOCIAL
+bing,SOURCE_CATEGORY_SEARCH
+biswap.org,SOURCE_CATEGORY_SOCIAL
+bit.ly,SOURCE_CATEGORY_SOCIAL
+blackcareernetwork.com,SOURCE_CATEGORY_SOCIAL
+blackplanet,SOURCE_CATEGORY_SOCIAL
+blackplanet.com,SOURCE_CATEGORY_SOCIAL
+blip.fm,SOURCE_CATEGORY_SOCIAL
+blog.com,SOURCE_CATEGORY_SOCIAL
+blog.feedspot.com,SOURCE_CATEGORY_SOCIAL
+blog.goo.ne.jp,SOURCE_CATEGORY_SOCIAL
+blog.naver.com,SOURCE_CATEGORY_SOCIAL
+blog.twitch.tv,SOURCE_CATEGORY_VIDEO
+blog.yahoo.co.jp,SOURCE_CATEGORY_SOCIAL
+blogg.no,SOURCE_CATEGORY_SOCIAL
+bloggang.com,SOURCE_CATEGORY_SOCIAL
+blogger,SOURCE_CATEGORY_SOCIAL
+blogger.com,SOURCE_CATEGORY_SOCIAL
+blogher,SOURCE_CATEGORY_SOCIAL
+blogher.com,SOURCE_CATEGORY_SOCIAL
+bloglines,SOURCE_CATEGORY_SOCIAL
+bloglines.com,SOURCE_CATEGORY_SOCIAL
+blogs.com,SOURCE_CATEGORY_SOCIAL
+blogsome,SOURCE_CATEGORY_SOCIAL
+blogsome.com,SOURCE_CATEGORY_SOCIAL
+blogspot,SOURCE_CATEGORY_SOCIAL
+blogspot.com,SOURCE_CATEGORY_SOCIAL
+blogster,SOURCE_CATEGORY_SOCIAL
+blogster.com,SOURCE_CATEGORY_SOCIAL
+blurtit,SOURCE_CATEGORY_SOCIAL
+blurtit.com,SOURCE_CATEGORY_SOCIAL
+bookmarks.yahoo.co.jp,SOURCE_CATEGORY_SOCIAL
+bookmarks.yahoo.com,SOURCE_CATEGORY_SOCIAL
+br.pinterest.com,SOURCE_CATEGORY_SOCIAL
+br.search.yahoo.com,SOURCE_CATEGORY_SEARCH
+brightkite,SOURCE_CATEGORY_SOCIAL
+brightkite.com,SOURCE_CATEGORY_SOCIAL
+brizzly,SOURCE_CATEGORY_SOCIAL
+brizzly.com,SOURCE_CATEGORY_SOCIAL
+business.facebook.com,SOURCE_CATEGORY_SOCIAL
+buzzfeed,SOURCE_CATEGORY_SOCIAL
+buzzfeed.com,SOURCE_CATEGORY_SOCIAL
+buzznet,SOURCE_CATEGORY_SOCIAL
+buzznet.com,SOURCE_CATEGORY_SOCIAL
+ca.search.yahoo.com,SOURCE_CATEGORY_SEARCH
+cafe.naver.com,SOURCE_CATEGORY_SOCIAL
+cafemom,SOURCE_CATEGORY_SOCIAL
+cafemom.com,SOURCE_CATEGORY_SOCIAL
+camospace,SOURCE_CATEGORY_SOCIAL
+camospace.com,SOURCE_CATEGORY_SOCIAL
+canalblog.com,SOURCE_CATEGORY_SOCIAL
+care.com,SOURCE_CATEGORY_SOCIAL
+care2,SOURCE_CATEGORY_SOCIAL
+care2.com,SOURCE_CATEGORY_SOCIAL
+caringbridge.org,SOURCE_CATEGORY_SOCIAL
+catster,SOURCE_CATEGORY_SOCIAL
+catster.com,SOURCE_CATEGORY_SOCIAL
+cbnt.io,SOURCE_CATEGORY_SOCIAL
+cellufun,SOURCE_CATEGORY_SOCIAL
+cellufun.com,SOURCE_CATEGORY_SOCIAL
+centerblog.net,SOURCE_CATEGORY_SOCIAL
+centrum.cz,SOURCE_CATEGORY_SEARCH
+ch.search.yahoo.com,SOURCE_CATEGORY_SEARCH
+chat.zalo.me,SOURCE_CATEGORY_SOCIAL
+checkout.shopify.com,SOURCE_CATEGORY_SHOPPING
+checkout.stripe.com,SOURCE_CATEGORY_SHOPPING
+chegg.com,SOURCE_CATEGORY_SOCIAL
+chicagonow,SOURCE_CATEGORY_SOCIAL
+chicagonow.com,SOURCE_CATEGORY_SOCIAL
+chiebukuro.yahoo.co.jp,SOURCE_CATEGORY_SOCIAL
+cl.search.yahoo.com,SOURCE_CATEGORY_SEARCH
+classmates,SOURCE_CATEGORY_SOCIAL
+classmates.com,SOURCE_CATEGORY_SOCIAL
+classquest,SOURCE_CATEGORY_SOCIAL
+classquest.com,SOURCE_CATEGORY_SOCIAL
+cn.bing.com,SOURCE_CATEGORY_SEARCH
+cnn,SOURCE_CATEGORY_SEARCH
+co.pinterest.com,SOURCE_CATEGORY_SOCIAL
+co.search.yahoo.com,SOURCE_CATEGORY_SEARCH
+cocolog-nifty,SOURCE_CATEGORY_SOCIAL
+cocolog-nifty.com,SOURCE_CATEGORY_SOCIAL
+comcast,SOURCE_CATEGORY_SEARCH
+conduit,SOURCE_CATEGORY_SEARCH
+copainsdavant.linternaute.com,SOURCE_CATEGORY_SOCIAL
+couchsurfing.org,SOURCE_CATEGORY_SOCIAL
+cozycot,SOURCE_CATEGORY_SOCIAL
+cozycot.com,SOURCE_CATEGORY_SOCIAL
+cr.shopping.naver.com,SOURCE_CATEGORY_SHOPPING
+cr2.shopping.naver.com,SOURCE_CATEGORY_SHOPPING
+crackle,SOURCE_CATEGORY_VIDEO
+crackle.com,SOURCE_CATEGORY_VIDEO
+cross.tv,SOURCE_CATEGORY_SOCIAL
+crunchyroll,SOURCE_CATEGORY_SOCIAL
+crunchyroll.com,SOURCE_CATEGORY_SOCIAL
+curiositystream,SOURCE_CATEGORY_VIDEO
+curiositystream.com,SOURCE_CATEGORY_VIDEO
+cyworld,SOURCE_CATEGORY_SOCIAL
+cyworld.com,SOURCE_CATEGORY_SOCIAL
+cz.pinterest.com,SOURCE_CATEGORY_SOCIAL
+d.hatena.ne.jp,SOURCE_CATEGORY_SOCIAL
+d.tube,SOURCE_CATEGORY_VIDEO
+dailymotion,SOURCE_CATEGORY_VIDEO
+dailymotion.com,SOURCE_CATEGORY_VIDEO
+dailystrength.org,SOURCE_CATEGORY_SOCIAL
+dashboard.twitch.tv,SOURCE_CATEGORY_VIDEO
+daum,SOURCE_CATEGORY_SEARCH
+daum.net,SOURCE_CATEGORY_SEARCH
+de.search.yahoo.com,SOURCE_CATEGORY_SEARCH
+deluxe.com,SOURCE_CATEGORY_SOCIAL
+deviantart,SOURCE_CATEGORY_SOCIAL
+deviantart.com,SOURCE_CATEGORY_SOCIAL
+dianping,SOURCE_CATEGORY_SOCIAL
+dianping.com,SOURCE_CATEGORY_SOCIAL
+digg,SOURCE_CATEGORY_SOCIAL
+digg.com,SOURCE_CATEGORY_SOCIAL
+diigo,SOURCE_CATEGORY_SOCIAL
+diigo.com,SOURCE_CATEGORY_SOCIAL
+discover.hubpages.com,SOURCE_CATEGORY_SOCIAL
+disneyplus,SOURCE_CATEGORY_VIDEO
+disneyplus.com,SOURCE_CATEGORY_VIDEO
+disqus,SOURCE_CATEGORY_SOCIAL
+disqus.com,SOURCE_CATEGORY_SOCIAL
+dk.search.yahoo.com,SOURCE_CATEGORY_SEARCH
+dogpile,SOURCE_CATEGORY_SEARCH
+dogpile.com,SOURCE_CATEGORY_SEARCH
+dogster,SOURCE_CATEGORY_SOCIAL
+dogster.com,SOURCE_CATEGORY_SOCIAL
+dol2day,SOURCE_CATEGORY_SOCIAL
+dol2day.com,SOURCE_CATEGORY_SOCIAL
+doostang,SOURCE_CATEGORY_SOCIAL
+doostang.com,SOURCE_CATEGORY_SOCIAL
+dopplr,SOURCE_CATEGORY_SOCIAL
+dopplr.com,SOURCE_CATEGORY_SOCIAL
+douban,SOURCE_CATEGORY_SOCIAL
+douban.com,SOURCE_CATEGORY_SOCIAL
+draft.blogger.com,SOURCE_CATEGORY_SOCIAL
+draugiem.lv,SOURCE_CATEGORY_SOCIAL
+drugs-forum,SOURCE_CATEGORY_SOCIAL
+drugs-forum.com,SOURCE_CATEGORY_SOCIAL
+duckduckgo,SOURCE_CATEGORY_SEARCH
+dzone,SOURCE_CATEGORY_SOCIAL
+dzone.com,SOURCE_CATEGORY_SOCIAL
+ebay,SOURCE_CATEGORY_SHOPPING
+ebay.co.uk,SOURCE_CATEGORY_SHOPPING
+ebay.com,SOURCE_CATEGORY_SHOPPING
+ebay.com.au,SOURCE_CATEGORY_SHOPPING
+ebay.de,SOURCE_CATEGORY_SHOPPING
+ecosia.org,SOURCE_CATEGORY_SEARCH
+edublogs.org,SOURCE_CATEGORY_SOCIAL
+elftown,SOURCE_CATEGORY_SOCIAL
+elftown.com,SOURCE_CATEGORY_SOCIAL
+email.seznam.cz,SOURCE_CATEGORY_SEARCH
+eniro,SOURCE_CATEGORY_SEARCH
+epicurious.com,SOURCE_CATEGORY_SOCIAL
+es.search.yahoo.com,SOURCE_CATEGORY_SEARCH
+espanol.search.yahoo.com,SOURCE_CATEGORY_SEARCH
+etsy,SOURCE_CATEGORY_SHOPPING
+etsy.com,SOURCE_CATEGORY_SHOPPING
+everforo.com,SOURCE_CATEGORY_SOCIAL
+exalead.com,SOURCE_CATEGORY_SEARCH
+exblog.jp,SOURCE_CATEGORY_SOCIAL
+excite.com,SOURCE_CATEGORY_SEARCH
+extole,SOURCE_CATEGORY_SOCIAL
+extole.com,SOURCE_CATEGORY_SOCIAL
+facebook,SOURCE_CATEGORY_SOCIAL
+facebook.com,SOURCE_CATEGORY_SOCIAL
+faceparty,SOURCE_CATEGORY_SOCIAL
+faceparty.com,SOURCE_CATEGORY_SOCIAL
+fandom.com,SOURCE_CATEGORY_SOCIAL
+fanpop,SOURCE_CATEGORY_SOCIAL
+fanpop.com,SOURCE_CATEGORY_SOCIAL
+fark,SOURCE_CATEGORY_SOCIAL
+fark.com,SOURCE_CATEGORY_SOCIAL
+fast.wistia.net,SOURCE_CATEGORY_VIDEO
+fb,SOURCE_CATEGORY_SOCIAL
+fb.me,SOURCE_CATEGORY_SOCIAL
+fc2,SOURCE_CATEGORY_SOCIAL
+fc2.com,SOURCE_CATEGORY_SOCIAL
+feedspot,SOURCE_CATEGORY_SOCIAL
+feministing,SOURCE_CATEGORY_SOCIAL
+feministing.com,SOURCE_CATEGORY_SOCIAL
+fi.search.yahoo.com,SOURCE_CATEGORY_SEARCH
+filmaffinity,SOURCE_CATEGORY_SOCIAL
+filmaffinity.com,SOURCE_CATEGORY_SOCIAL
+firmy.cz,SOURCE_CATEGORY_SEARCH
+flickr,SOURCE_CATEGORY_SOCIAL
+flickr.com,SOURCE_CATEGORY_SOCIAL
+flipboard,SOURCE_CATEGORY_SOCIAL
+flipboard.com,SOURCE_CATEGORY_SOCIAL
+folkdirect,SOURCE_CATEGORY_SOCIAL
+folkdirect.com,SOURCE_CATEGORY_SOCIAL
+foodservice,SOURCE_CATEGORY_SOCIAL
+foodservice.com,SOURCE_CATEGORY_SOCIAL
+forums.androidcentral.com,SOURCE_CATEGORY_SOCIAL
+forums.crackberry.com,SOURCE_CATEGORY_SOCIAL
+forums.imore.com,SOURCE_CATEGORY_SOCIAL
+forums.nexopia.com,SOURCE_CATEGORY_SOCIAL
+forums.webosnation.com,SOURCE_CATEGORY_SOCIAL
+forums.wpcentral.com,SOURCE_CATEGORY_SOCIAL
+fotki,SOURCE_CATEGORY_SOCIAL
+fotki.com,SOURCE_CATEGORY_SOCIAL
+fotolog,SOURCE_CATEGORY_SOCIAL
+fotolog.com,SOURCE_CATEGORY_SOCIAL
+foursquare,SOURCE_CATEGORY_SOCIAL
+foursquare.com,SOURCE_CATEGORY_SOCIAL
+fr.search.yahoo.com,SOURCE_CATEGORY_SEARCH
+free.facebook.com,SOURCE_CATEGORY_SOCIAL
+friendfeed,SOURCE_CATEGORY_SOCIAL
+friendfeed.com,SOURCE_CATEGORY_SOCIAL
+fruehstueckstreff.org,SOURCE_CATEGORY_SOCIAL
+fubar,SOURCE_CATEGORY_SOCIAL
+fubar.com,SOURCE_CATEGORY_SOCIAL
+gaiaonline,SOURCE_CATEGORY_SOCIAL
+gaiaonline.com,SOURCE_CATEGORY_SOCIAL
+gamerdna,SOURCE_CATEGORY_SOCIAL
+gamerdna.com,SOURCE_CATEGORY_SOCIAL
+gather.com,SOURCE_CATEGORY_SOCIAL
+geni.com,SOURCE_CATEGORY_SOCIAL
+getpocket.com,SOURCE_CATEGORY_SOCIAL
+glassboard,SOURCE_CATEGORY_SOCIAL
+glassboard.com,SOURCE_CATEGORY_SOCIAL
+glassdoor,SOURCE_CATEGORY_SOCIAL
+glassdoor.com,SOURCE_CATEGORY_SOCIAL
+globo,SOURCE_CATEGORY_SEARCH
+go.mail.ru,SOURCE_CATEGORY_SEARCH
+godtube,SOURCE_CATEGORY_SOCIAL
+godtube.com,SOURCE_CATEGORY_SOCIAL
+goldenline.pl,SOURCE_CATEGORY_SOCIAL
+goldstar,SOURCE_CATEGORY_SOCIAL
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+weibo.com,SOURCE_CATEGORY_SOCIAL
+wer-weiss-was.de,SOURCE_CATEGORY_SOCIAL
+weread,SOURCE_CATEGORY_SOCIAL
+weread.com,SOURCE_CATEGORY_SOCIAL
+whatsapp,SOURCE_CATEGORY_SOCIAL
+whatsapp.com,SOURCE_CATEGORY_SOCIAL
+wiki.answers.com,SOURCE_CATEGORY_SOCIAL
+wikihow.com,SOURCE_CATEGORY_SOCIAL
+wikitravel.org,SOURCE_CATEGORY_SOCIAL
+wistia,SOURCE_CATEGORY_VIDEO
+wistia.com,SOURCE_CATEGORY_VIDEO
+woot.com,SOURCE_CATEGORY_SOCIAL
+wordpress,SOURCE_CATEGORY_SOCIAL
+wordpress.com,SOURCE_CATEGORY_SOCIAL
+wordpress.org,SOURCE_CATEGORY_SOCIAL
+xanga,SOURCE_CATEGORY_SOCIAL
+xanga.com,SOURCE_CATEGORY_SOCIAL
+xing,SOURCE_CATEGORY_SOCIAL
+xing.com,SOURCE_CATEGORY_SOCIAL
+yahoo,SOURCE_CATEGORY_SEARCH
+yahoo-mbga.jp,SOURCE_CATEGORY_SOCIAL
+yahoo.co.jp,SOURCE_CATEGORY_SEARCH
+yahoo.com,SOURCE_CATEGORY_SEARCH
+yammer,SOURCE_CATEGORY_SOCIAL
+yammer.com,SOURCE_CATEGORY_SOCIAL
+yandex,SOURCE_CATEGORY_SEARCH
+yandex.by,SOURCE_CATEGORY_SEARCH
+yandex.com,SOURCE_CATEGORY_SEARCH
+yandex.com.tr,SOURCE_CATEGORY_SEARCH
+yandex.fr,SOURCE_CATEGORY_SEARCH
+yandex.kz,SOURCE_CATEGORY_SEARCH
+yandex.ru,SOURCE_CATEGORY_SEARCH
+yandex.ua,SOURCE_CATEGORY_SEARCH
+yandex.uz,SOURCE_CATEGORY_SEARCH
+yelp,SOURCE_CATEGORY_SOCIAL
+yelp.co.uk,SOURCE_CATEGORY_SOCIAL
+yelp.com,SOURCE_CATEGORY_SOCIAL
+youku,SOURCE_CATEGORY_VIDEO
+youku.com,SOURCE_CATEGORY_VIDEO
+youroom.in,SOURCE_CATEGORY_SOCIAL
+youtube,SOURCE_CATEGORY_VIDEO
+youtube.com,SOURCE_CATEGORY_VIDEO
+za.pinterest.com,SOURCE_CATEGORY_SOCIAL
+zalo,SOURCE_CATEGORY_SOCIAL
+zen.yandex.ru,SOURCE_CATEGORY_SEARCH
+zoo.gr,SOURCE_CATEGORY_SOCIAL
+zooppa,SOURCE_CATEGORY_SOCIAL
+zooppa.com,SOURCE_CATEGORY_SOCIAL

test/plausible_web/controllers/api/external_controller_test.exs

@@ -1219,6 +1219,731 @@ defmodule PlausibleWeb.Api.ExternalControllerTest do
     end
   end
 
+  describe "acquisition channel tests" do
+    setup do
+      site = insert(:site)
+      {:ok, site: site}
+    end
+
+    test "parses cross network channel", %{conn: conn, site: site} do
+      params = %{
+        name: "pageview",
+        url: "http://example.com/?utm_campaign=cross-network",
+        domain: site.domain
+      }
+
+      conn =
+        conn
+        |> put_req_header("user-agent", @user_agent)
+        |> post("/api/event", params)
+
+      session = get_created_session(site)
+
+      assert response(conn, 202) == "ok"
+      assert session.channel == "Cross-network"
+    end
+
+    test "parses paid shopping channel based on campaign/medium", %{conn: conn, site: site} do
+      params = %{
+        name: "pageview",
+        url: "http://example.com/?utm_campaign=shopping&utm_medium=paid",
+        domain: site.domain
+      }
+
+      conn =
+        conn
+        |> put_req_header("user-agent", @user_agent)
+        |> post("/api/event", params)
+
+      session = get_created_session(site)
+
+      assert response(conn, 202) == "ok"
+      assert session.channel == "Paid Shopping"
+    end
+
+    test "parses paid shopping channel based on referrer source and medium", %{
+      conn: conn,
+      site: site
+    } do
+      params = %{
+        name: "pageview",
+        url: "http://example.com?utm_medium=paid",
+        referrer: "https://shopify.com",
+        domain: site.domain
+      }
+
+      conn =
+        conn
+        |> put_req_header("user-agent", @user_agent)
+        |> post("/api/event", params)
+
+      session = get_created_session(site)
+
+      assert response(conn, 202) == "ok"
+      assert session.channel == "Paid Shopping"
+    end
+
+    test "parses paid shopping channel based on referrer utm_source and medium", %{
+      conn: conn,
+      site: site
+    } do
+      params = %{
+        name: "pageview",
+        url: "http://example.com?utm_source=shopify&utm_medium=paid",
+        domain: site.domain
+      }
+
+      conn =
+        conn
+        |> put_req_header("user-agent", @user_agent)
+        |> post("/api/event", params)
+
+      session = get_created_session(site)
+
+      assert response(conn, 202) == "ok"
+      assert session.channel == "Paid Shopping"
+    end
+
+    test "parses paid search channel based on referrer and medium", %{conn: conn, site: site} do
+      params = %{
+        name: "pageview",
+        url: "http://example.com?utm_medium=paid",
+        referrer: "https://duckduckgo.com",
+        domain: site.domain
+      }
+
+      conn =
+        conn
+        |> put_req_header("user-agent", @user_agent)
+        |> post("/api/event", params)
+
+      session = get_created_session(site)
+
+      assert response(conn, 202) == "ok"
+      assert session.channel == "Paid Search"
+    end
+
+    test "parses paid search channel based on gclid", %{conn: conn, site: site} do
+      params = %{
+        name: "pageview",
+        url: "http://example.com?gclid=123identifier",
+        referrer: "https://google.com",
+        domain: site.domain
+      }
+
+      conn =
+        conn
+        |> put_req_header("user-agent", @user_agent)
+        |> post("/api/event", params)
+
+      session = get_created_session(site)
+
+      assert response(conn, 202) == "ok"
+      assert session.channel == "Paid Search"
+    end
+
+    test "is not paid search when gclid is present on non-google referrer", %{
+      conn: conn,
+      site: site
+    } do
+      params = %{
+        name: "pageview",
+        url: "http://example.com?gclid=123identifier",
+        referrer: "https://duckduckgo.com",
+        domain: site.domain
+      }
+
+      conn =
+        conn
+        |> put_req_header("user-agent", @user_agent)
+        |> post("/api/event", params)
+
+      session = get_created_session(site)
+
+      assert response(conn, 202) == "ok"
+      assert session.channel == "Organic Search"
+    end
+
+    test "parses paid search channel based on msclkid", %{conn: conn, site: site} do
+      params = %{
+        name: "pageview",
+        url: "http://example.com?msclkid=123identifier",
+        referrer: "https://bing.com",
+        domain: site.domain
+      }
+
+      conn =
+        conn
+        |> put_req_header("user-agent", @user_agent)
+        |> post("/api/event", params)
+
+      session = get_created_session(site)
+
+      assert response(conn, 202) == "ok"
+      assert session.channel == "Paid Search"
+    end
+
+    test "is not paid search when msclkid is present on non-bing referrer", %{
+      conn: conn,
+      site: site
+    } do
+      params = %{
+        name: "pageview",
+        url: "http://example.com?msclkid=123identifier",
+        referrer: "https://duckduckgo.com",
+        domain: site.domain
+      }
+
+      conn =
+        conn
+        |> put_req_header("user-agent", @user_agent)
+        |> post("/api/event", params)
+
+      session = get_created_session(site)
+
+      assert response(conn, 202) == "ok"
+      assert session.channel == "Organic Search"
+    end
+
+    test "parses paid search channel based on utm_source and medium", %{conn: conn, site: site} do
+      params = %{
+        name: "pageview",
+        url: "http://example.com?utm_source=google&utm_medium=paid",
+        domain: site.domain
+      }
+
+      conn =
+        conn
+        |> put_req_header("user-agent", @user_agent)
+        |> post("/api/event", params)
+
+      session = get_created_session(site)
+
+      assert response(conn, 202) == "ok"
+      assert session.channel == "Paid Search"
+    end
+
+    test "parses paid social channel based on referrer and medium", %{conn: conn, site: site} do
+      params = %{
+        name: "pageview",
+        url: "http://example.com?utm_medium=paid",
+        referrer: "https://tiktok.com",
+        domain: site.domain
+      }
+
+      conn =
+        conn
+        |> put_req_header("user-agent", @user_agent)
+        |> post("/api/event", params)
+
+      session = get_created_session(site)
+
+      assert response(conn, 202) == "ok"
+      assert session.channel == "Paid Social"
+    end
+
+    test "parses paid social channel based on utm_source and medium", %{conn: conn, site: site} do
+      params = %{
+        name: "pageview",
+        url: "http://example.com?utm_source=tiktok&utm_medium=paid",
+        domain: site.domain
+      }
+
+      conn =
+        conn
+        |> put_req_header("user-agent", @user_agent)
+        |> post("/api/event", params)
+
+      session = get_created_session(site)
+
+      assert response(conn, 202) == "ok"
+      assert session.channel == "Paid Social"
+    end
+
+    test "parses paid video channel based on referrer and medium", %{conn: conn, site: site} do
+      params = %{
+        name: "pageview",
+        url: "http://example.com?utm_medium=paid",
+        referrer: "https://youtube.com",
+        domain: site.domain
+      }
+
+      conn =
+        conn
+        |> put_req_header("user-agent", @user_agent)
+        |> post("/api/event", params)
+
+      session = get_created_session(site)
+
+      assert response(conn, 202) == "ok"
+      assert session.channel == "Paid Video"
+    end
+
+    test "parses paid video channel based on utm_source and medium", %{conn: conn, site: site} do
+      params = %{
+        name: "pageview",
+        url: "http://example.com?utm_source=youtube&utm_medium=paid",
+        domain: site.domain
+      }
+
+      conn =
+        conn
+        |> put_req_header("user-agent", @user_agent)
+        |> post("/api/event", params)
+
+      session = get_created_session(site)
+
+      assert response(conn, 202) == "ok"
+      assert session.channel == "Paid Video"
+    end
+
+    test "parses display channel", %{conn: conn, site: site} do
+      params = %{
+        name: "pageview",
+        url: "http://example.com?utm_medium=banner",
+        domain: site.domain
+      }
+
+      conn =
+        conn
+        |> put_req_header("user-agent", @user_agent)
+        |> post("/api/event", params)
+
+      session = get_created_session(site)
+
+      assert response(conn, 202) == "ok"
+      assert session.channel == "Display"
+    end
+
+    test "parses paid other channel", %{conn: conn, site: site} do
+      params = %{
+        name: "pageview",
+        url: "http://example.com?utm_medium=cpc",
+        domain: site.domain
+      }
+
+      conn =
+        conn
+        |> put_req_header("user-agent", @user_agent)
+        |> post("/api/event", params)
+
+      session = get_created_session(site)
+
+      assert response(conn, 202) == "ok"
+      assert session.channel == "Paid Other"
+    end
+
+    test "parses organic shopping channel from referrer", %{conn: conn, site: site} do
+      params = %{
+        name: "pageview",
+        url: "http://example.com",
+        referrer: "https://walmart.com",
+        domain: site.domain
+      }
+
+      conn =
+        conn
+        |> put_req_header("user-agent", @user_agent)
+        |> post("/api/event", params)
+
+      session = get_created_session(site)
+
+      assert response(conn, 202) == "ok"
+      assert session.channel == "Organic Shopping"
+    end
+
+    test "parses organic shopping channel from utm_source", %{conn: conn, site: site} do
+      params = %{
+        name: "pageview",
+        url: "http://example.com?utm_source=walmart",
+        domain: site.domain
+      }
+
+      conn =
+        conn
+        |> put_req_header("user-agent", @user_agent)
+        |> post("/api/event", params)
+
+      session = get_created_session(site)
+
+      assert response(conn, 202) == "ok"
+      assert session.channel == "Organic Shopping"
+    end
+
+    test "parses organic shopping channel from utm_campaign", %{conn: conn, site: site} do
+      params = %{
+        name: "pageview",
+        url: "http://example.com?utm_campaign=shop",
+        domain: site.domain
+      }
+
+      conn =
+        conn
+        |> put_req_header("user-agent", @user_agent)
+        |> post("/api/event", params)
+
+      session = get_created_session(site)
+
+      assert response(conn, 202) == "ok"
+      assert session.channel == "Organic Shopping"
+    end
+
+    test "parses organic social channel from referrer", %{conn: conn, site: site} do
+      params = %{
+        name: "pageview",
+        url: "http://example.com",
+        referrer: "http://facebook.com",
+        domain: site.domain
+      }
+
+      conn =
+        conn
+        |> put_req_header("user-agent", @user_agent)
+        |> post("/api/event", params)
+
+      session = get_created_session(site)
+
+      assert response(conn, 202) == "ok"
+      assert session.channel == "Organic Social"
+    end
+
+    test "parses organic social channel from utm_source", %{conn: conn, site: site} do
+      params = %{
+        name: "pageview",
+        url: "http://example.com?utm_source=twitter",
+        domain: site.domain
+      }
+
+      conn =
+        conn
+        |> put_req_header("user-agent", @user_agent)
+        |> post("/api/event", params)
+
+      session = get_created_session(site)
+
+      assert response(conn, 202) == "ok"
+      assert session.channel == "Organic Social"
+    end
+
+    test "parses organic social channel from utm_medium", %{conn: conn, site: site} do
+      params = %{
+        name: "pageview",
+        url: "http://example.com?utm_medium=social",
+        domain: site.domain
+      }
+
+      conn =
+        conn
+        |> put_req_header("user-agent", @user_agent)
+        |> post("/api/event", params)
+
+      session = get_created_session(site)
+
+      assert response(conn, 202) == "ok"
+      assert session.channel == "Organic Social"
+    end
+
+    test "parses organic video channel from referrer", %{conn: conn, site: site} do
+      params = %{
+        name: "pageview",
+        url: "http://example.com",
+        referrer: "https://vimeo.com",
+        domain: site.domain
+      }
+
+      conn =
+        conn
+        |> put_req_header("user-agent", @user_agent)
+        |> post("/api/event", params)
+
+      session = get_created_session(site)
+
+      assert response(conn, 202) == "ok"
+      assert session.channel == "Organic Video"
+    end
+
+    test "parses organic video channel from utm_source", %{conn: conn, site: site} do
+      params = %{
+        name: "pageview",
+        url: "http://example.com?utm_source=vimeo",
+        domain: site.domain
+      }
+
+      conn =
+        conn
+        |> put_req_header("user-agent", @user_agent)
+        |> post("/api/event", params)
+
+      session = get_created_session(site)
+
+      assert response(conn, 202) == "ok"
+      assert session.channel == "Organic Video"
+    end
+
+    test "parses organic video channel from utm_medium", %{conn: conn, site: site} do
+      params = %{
+        name: "pageview",
+        url: "http://example.com?utm_medium=video",
+        domain: site.domain
+      }
+
+      conn =
+        conn
+        |> put_req_header("user-agent", @user_agent)
+        |> post("/api/event", params)
+
+      session = get_created_session(site)
+
+      assert response(conn, 202) == "ok"
+      assert session.channel == "Organic Video"
+    end
+
+    test "parses organic search channel from referrer", %{conn: conn, site: site} do
+      params = %{
+        name: "pageview",
+        url: "http://example.com",
+        referrer: "http://duckduckgo.com",
+        domain: site.domain
+      }
+
+      conn =
+        conn
+        |> put_req_header("user-agent", @user_agent)
+        |> post("/api/event", params)
+
+      session = get_created_session(site)
+
+      assert response(conn, 202) == "ok"
+      assert session.channel == "Organic Search"
+    end
+
+    test "parses organic search channel from utm_source", %{conn: conn, site: site} do
+      params = %{
+        name: "pageview",
+        url: "http://example.com?utm_source=duckduckgo",
+        domain: site.domain
+      }
+
+      conn =
+        conn
+        |> put_req_header("user-agent", @user_agent)
+        |> post("/api/event", params)
+
+      session = get_created_session(site)
+
+      assert response(conn, 202) == "ok"
+      assert session.channel == "Organic Search"
+    end
+
+    test "parses referral channel from utm_medium", %{conn: conn, site: site} do
+      params = %{
+        name: "pageview",
+        url: "http://example.com?utm_medium=referral",
+        domain: site.domain
+      }
+
+      conn =
+        conn
+        |> put_req_header("user-agent", @user_agent)
+        |> post("/api/event", params)
+
+      session = get_created_session(site)
+
+      assert response(conn, 202) == "ok"
+      assert session.channel == "Referral"
+    end
+
+    test "parses email channel from utm_source", %{conn: conn, site: site} do
+      params = %{
+        name: "pageview",
+        url: "http://example.com?utm_source=email",
+        domain: site.domain
+      }
+
+      conn =
+        conn
+        |> put_req_header("user-agent", @user_agent)
+        |> post("/api/event", params)
+
+      session = get_created_session(site)
+
+      assert response(conn, 202) == "ok"
+      assert session.channel == "Email"
+    end
+
+    test "parses email channel from utm_medium", %{conn: conn, site: site} do
+      params = %{
+        name: "pageview",
+        url: "http://example.com?utm_medium=email",
+        domain: site.domain
+      }
+
+      conn =
+        conn
+        |> put_req_header("user-agent", @user_agent)
+        |> post("/api/event", params)
+
+      session = get_created_session(site)
+
+      assert response(conn, 202) == "ok"
+      assert session.channel == "Email"
+    end
+
+    test "parses affiliates channel from utm_medium", %{conn: conn, site: site} do
+      params = %{
+        name: "pageview",
+        url: "http://example.com?utm_medium=affiliate",
+        domain: site.domain
+      }
+
+      conn =
+        conn
+        |> put_req_header("user-agent", @user_agent)
+        |> post("/api/event", params)
+
+      session = get_created_session(site)
+
+      assert response(conn, 202) == "ok"
+      assert session.channel == "Affiliates"
+    end
+
+    test "parses audio channel from utm_medium", %{conn: conn, site: site} do
+      params = %{
+        name: "pageview",
+        url: "http://example.com?utm_medium=audio",
+        domain: site.domain
+      }
+
+      conn =
+        conn
+        |> put_req_header("user-agent", @user_agent)
+        |> post("/api/event", params)
+
+      session = get_created_session(site)
+
+      assert response(conn, 202) == "ok"
+      assert session.channel == "Audio"
+    end
+
+    test "parses sms channel from utm_source", %{conn: conn, site: site} do
+      params = %{
+        name: "pageview",
+        url: "http://example.com?utm_source=sms",
+        domain: site.domain
+      }
+
+      conn =
+        conn
+        |> put_req_header("user-agent", @user_agent)
+        |> post("/api/event", params)
+
+      session = get_created_session(site)
+
+      assert response(conn, 202) == "ok"
+      assert session.channel == "SMS"
+    end
+
+    test "parses sms channel from utm_medium", %{conn: conn, site: site} do
+      params = %{
+        name: "pageview",
+        url: "http://example.com?utm_medium=sms",
+        domain: site.domain
+      }
+
+      conn =
+        conn
+        |> put_req_header("user-agent", @user_agent)
+        |> post("/api/event", params)
+
+      session = get_created_session(site)
+
+      assert response(conn, 202) == "ok"
+      assert session.channel == "SMS"
+    end
+
+    test "parses mobile push notifications channel from utm_medium with push", %{
+      conn: conn,
+      site: site
+    } do
+      params = %{
+        name: "pageview",
+        url: "http://example.com?utm_medium=app-push",
+        domain: site.domain
+      }
+
+      conn =
+        conn
+        |> put_req_header("user-agent", @user_agent)
+        |> post("/api/event", params)
+
+      session = get_created_session(site)
+
+      assert response(conn, 202) == "ok"
+      assert session.channel == "Mobile Push Notifications"
+    end
+
+    test "parses mobile push notifications channel from utm_medium", %{conn: conn, site: site} do
+      params = %{
+        name: "pageview",
+        url: "http://example.com?utm_medium=example-mobile",
+        domain: site.domain
+      }
+
+      conn =
+        conn
+        |> put_req_header("user-agent", @user_agent)
+        |> post("/api/event", params)
+
+      session = get_created_session(site)
+
+      assert response(conn, 202) == "ok"
+      assert session.channel == "Mobile Push Notifications"
+    end
+
+    test "parses referral channel if session starts with a simple referral", %{
+      conn: conn,
+      site: site
+    } do
+      params = %{
+        name: "pageview",
+        url: "http://example.com",
+        referrer: "https://othersite.com",
+        domain: site.domain
+      }
+
+      conn =
+        conn
+        |> put_req_header("user-agent", @user_agent)
+        |> post("/api/event", params)
+
+      session = get_created_session(site)
+
+      assert response(conn, 202) == "ok"
+      assert session.channel == "Referral"
+    end
+
+    test "parses direct channel if session starts without referrer or utm tags", %{
+      conn: conn,
+      site: site
+    } do
+      params = %{
+        name: "pageview",
+        url: "http://example.com",
+        domain: site.domain
+      }
+
+      conn =
+        conn
+        |> put_req_header("user-agent", @user_agent)
+        |> post("/api/event", params)
+
+      session = get_created_session(site)
+
+      assert response(conn, 202) == "ok"
+      assert session.channel == "Direct"
+    end
+  end
+
   describe "user_id generation" do
     setup do
       site = insert(:site)