mirror of
https://github.com/plausible/analytics.git
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298 lines
8.3 KiB
Elixir
298 lines
8.3 KiB
Elixir
defmodule PlausibleWeb.Api.ExternalController do
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use PlausibleWeb, :controller
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require Logger
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def event(conn, _params) do
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params = parse_body(conn)
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Sentry.Context.set_extra_context(%{request: params})
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case create_event(conn, params) do
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{:ok, _} ->
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conn |> send_resp(202, "")
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{:error, changeset} ->
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request = Sentry.Plug.build_request_interface_data(conn, [])
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Sentry.capture_message("Error processing event",
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extra: %{errors: inspect(changeset.errors), params: params, request: request}
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)
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Logger.info("Error processing event: #{inspect(changeset)}")
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conn |> send_resp(400, "")
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end
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end
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def error(conn, _params) do
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request = Sentry.Plug.build_request_interface_data(conn, [])
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Sentry.capture_message("JS snippet error", request: request)
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send_resp(conn, 200, "")
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end
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def health(conn, _params) do
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postgres_health =
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case Ecto.Adapters.SQL.query(Plausible.Repo, "SELECT 1", []) do
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{:ok, _} -> "ok"
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e -> "error: #{inspect(e)}"
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end
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clickhouse_health =
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case Ecto.Adapters.SQL.query(Plausible.ClickhouseRepo, "SELECT 1", []) do
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{:ok, _} -> "ok"
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e -> "error: #{inspect(e)}"
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end
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status =
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case {postgres_health, clickhouse_health} do
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{"ok", "ok"} -> 200
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_ -> 500
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end
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put_status(conn, status)
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|> json(%{
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postgres: postgres_health,
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clickhouse: clickhouse_health
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})
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end
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defp parse_user_agent(conn) do
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user_agent = Plug.Conn.get_req_header(conn, "user-agent") |> List.first()
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if user_agent do
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Cachex.fetch!(:user_agents, user_agent, fn ua ->
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{:commit, UAInspector.parse(ua)}
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end)
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end
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end
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defp create_event(conn, params) do
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params = %{
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"name" => params["n"] || params["name"],
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"url" => params["u"] || params["url"],
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"referrer" => params["r"] || params["referrer"],
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"domain" => params["d"] || params["domain"],
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"screen_width" => params["w"] || params["screen_width"],
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"hash_mode" => params["h"] || params["hashMode"],
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"meta" => parse_meta(params)
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}
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ua = parse_user_agent(conn)
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if is_bot?(ua) do
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{:ok, nil}
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else
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uri = params["url"] && URI.parse(params["url"])
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query = if uri && uri.query, do: URI.decode_query(uri.query), else: %{}
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ref = parse_referrer(uri, params["referrer"])
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country_code = visitor_country(conn)
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salts = Plausible.Session.Salts.fetch()
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event_attrs = %{
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timestamp: NaiveDateTime.utc_now() |> NaiveDateTime.truncate(:second),
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name: params["name"],
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hostname: strip_www(uri && uri.host),
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domain: strip_www(params["domain"]) || strip_www(uri && uri.host),
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pathname: get_pathname(uri, params["hash_mode"]),
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user_id: generate_user_id(conn, params, salts[:current]),
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referrer_source: get_referrer_source(query, ref) || "",
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referrer: clean_referrer(ref) || "",
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utm_medium: query["utm_medium"] || "",
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utm_source: query["utm_source"] || "",
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utm_campaign: query["utm_campaign"] || "",
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country_code: country_code || "",
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operating_system: (ua && os_name(ua)) || "",
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operating_system_version: (ua && os_version(ua)) || "",
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browser: (ua && browser_name(ua)) || "",
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browser_version: (ua && browser_version(ua)) || "",
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screen_size: calculate_screen_size(params["screen_width"]) || "",
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"meta.key": Map.keys(params["meta"]),
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"meta.value": Map.values(params["meta"]) |> Enum.map(&Kernel.to_string/1)
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}
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changeset = Plausible.ClickhouseEvent.changeset(%Plausible.ClickhouseEvent{}, event_attrs)
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if changeset.valid? do
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previous_user_id = salts[:previous] && generate_user_id(conn, params, salts[:previous])
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event = struct(Plausible.ClickhouseEvent, event_attrs)
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session_id = Plausible.Session.Store.on_event(event, previous_user_id)
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Map.put(event, :session_id, session_id)
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|> Plausible.Event.WriteBuffer.insert()
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else
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{:error, changeset}
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end
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end
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end
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defp is_bot?(%UAInspector.Result.Bot{}), do: true
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defp is_bot?(%UAInspector.Result{client: %UAInspector.Result.Client{name: "Headless Chrome"}}),
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do: true
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defp is_bot?(_), do: false
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defp parse_meta(params) do
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raw_meta = params["m"] || params["meta"] || params["p"] || params["props"]
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if raw_meta do
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case Jason.decode(raw_meta) do
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{:ok, props} when is_map(props) -> props
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_ -> %{}
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end
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else
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%{}
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end
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end
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defp get_pathname(nil, _), do: "/"
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defp get_pathname(uri, hash_mode) do
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pathname =
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(uri.path || "/")
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|> URI.decode()
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if hash_mode && uri.fragment do
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pathname <> "#" <> URI.decode(uri.fragment)
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else
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pathname
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end
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end
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defp visitor_country(conn) do
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result =
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PlausibleWeb.RemoteIp.get(conn)
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|> Geolix.lookup()
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|> Map.get(:country)
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if result && result.country do
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result.country.iso_code
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end
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end
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defp parse_referrer(_, nil), do: nil
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defp parse_referrer(uri, referrer_str) do
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referrer_uri = URI.parse(referrer_str)
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if strip_www(referrer_uri.host) !== strip_www(uri.host) && referrer_uri.host !== "localhost" do
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RefInspector.parse(referrer_str)
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end
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end
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defp generate_user_id(conn, params, salt) do
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user_agent = List.first(Plug.Conn.get_req_header(conn, "user-agent")) || ""
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ip_address = PlausibleWeb.RemoteIp.get(conn)
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domain = strip_www(params["domain"]) || ""
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SipHash.hash!(salt, user_agent <> ip_address <> domain)
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end
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defp calculate_screen_size(nil), do: nil
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defp calculate_screen_size(width) when width < 576, do: "Mobile"
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defp calculate_screen_size(width) when width < 992, do: "Tablet"
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defp calculate_screen_size(width) when width < 1440, do: "Laptop"
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defp calculate_screen_size(width) when width >= 1440, do: "Desktop"
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defp clean_referrer(nil), do: nil
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defp clean_referrer(ref) do
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uri = URI.parse(ref.referer)
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if right_uri?(uri) do
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host = String.replace_prefix(uri.host, "www.", "")
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path = uri.path || ""
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host <> String.trim_trailing(path, "/")
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end
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end
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defp parse_body(conn) do
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{:ok, body, _conn} = Plug.Conn.read_body(conn)
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Jason.decode!(body)
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end
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defp strip_www(nil), do: nil
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defp strip_www(hostname) do
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String.replace_prefix(hostname, "www.", "")
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end
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defp browser_name(ua) do
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case ua.client do
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:unknown -> ""
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%UAInspector.Result.Client{name: "Mobile Safari"} -> "Safari"
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%UAInspector.Result.Client{name: "Chrome Mobile"} -> "Chrome"
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%UAInspector.Result.Client{name: "Chrome Mobile iOS"} -> "Chrome"
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%UAInspector.Result.Client{name: "Firefox Mobile"} -> "Firefox"
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%UAInspector.Result.Client{name: "Firefox Mobile iOS"} -> "Firefox"
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%UAInspector.Result.Client{name: "Opera Mobile"} -> "Opera"
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%UAInspector.Result.Client{name: "Chrome Webview"} -> "Mobile App"
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%UAInspector.Result.Client{type: "mobile app"} -> "Mobile App"
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client -> client.name
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end
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end
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defp major_minor(:unknown), do: ""
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defp major_minor(version) do
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version
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|> String.split(".")
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|> Enum.take(2)
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|> Enum.join(".")
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end
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defp browser_version(ua) do
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case ua.client do
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:unknown -> ""
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%UAInspector.Result.Client{type: "mobile app"} -> ""
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client -> major_minor(client.version)
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end
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end
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defp os_name(ua) do
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case ua.os do
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:unknown -> ""
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os -> os.name
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end
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end
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defp os_version(ua) do
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case ua.os do
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:unknown -> ""
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os -> major_minor(os.version)
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end
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end
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defp get_referrer_source(query, ref) do
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source = query["utm_source"] || query["source"] || query["ref"]
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source || get_source_from_referrer(ref)
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end
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defp get_source_from_referrer(nil), do: nil
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defp get_source_from_referrer(ref) do
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case ref.source do
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:unknown ->
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clean_uri(ref.referer)
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source ->
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source
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end
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end
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defp clean_uri(uri) do
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uri = URI.parse(String.trim(uri))
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if right_uri?(uri) do
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String.replace_leading(uri.host, "www.", "")
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end
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end
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defp right_uri?(%URI{host: nil}), do: false
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defp right_uri?(%URI{host: host, scheme: scheme})
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when scheme in ["http", "https"] and byte_size(host) > 0,
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do: true
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defp right_uri?(_), do: false
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end
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