feat: Initial commit

17 files changed, 539 insertions, 0 deletions

diff --git a/.dir-locals.el b/.dir-locals.el
new file mode 100644
index 0000000..dd0f300
--- /dev/null
+++ b/.dir-locals.el
@@ -0,0 +1,5 @@
+((nil . ((cider-preferred-build-tool . clojure-cli)
+         (cider-shadow-default-options . "app")
+         (cider-default-cljs-repl . custom)
+         (cider-clojure-cli-aliases . "-M:dev")
+         (cider-merge-sessions . :project))))
diff --git a/.gitignore b/.gitignore
new file mode 100644
index 0000000..7868acb
--- /dev/null
+++ b/.gitignore
@@ -0,0 +1,8 @@
+/resources/public
+node_modules
+.shadow-cljs
+public
+classes
+*.jar
+.cpcache
+.nrepl-port
\ No newline at end of file
diff --git a/deps.edn b/deps.edn
new file mode 100644
index 0000000..b61e31c
--- /dev/null
+++ b/deps.edn
@@ -0,0 +1,18 @@
+{:deps {com.github.TeamNewPipe/NewpipeExtractor {:mvn/version "6a85836"}
+        com.squareup.okhttp3/okhttp {:mvn/version "4.10.0"}
+        http-kit/http-kit {:mvn/version "2.7.0-alpha1"}
+        compojure/compojure {:mvn/version "1.7.0"}
+        org.clojure/clojure {:mvn/version "1.11.1"}
+        org.clojure/clojurescript {:mvn/version "1.11.60"}
+        ring/ring {:mvn/version "1.9.5"}
+        ring/ring-json {:mvn/version "0.5.1"}
+        org.clojure/java.data {:mvn/version "1.0.95"}}
+ :paths ["src/backend" "public" "classes"]
+ :mvn/repos {"jitpack"
+             {:url "https://jitpack.io"}}
+ :aliases
+ {:dev
+  {:extra-paths ["src/frontend"]
+   :extra-deps {thheller/shadow-cljs {:mvn/version "2.20.1"}}}
+  :run
+  {:main-opts ["-m" "tau.core"]}}}
diff --git a/package.json b/package.json
new file mode 100644
index 0000000..2854666
--- /dev/null
+++ b/package.json
@@ -0,0 +1,11 @@
+{
+  "name": "tau",
+  "version": "1.0.0",
+  "description": "An alternative frontend for media services",
+  "main": "index.js",
+  "scripts": {
+    "test": "echo \"Error: no test specified\" && exit 1"
+  },
+  "author": "conses",
+  "license": "GPL-3.0-or-later"
+}
diff --git a/shadow-cljs.edn b/shadow-cljs.edn
new file mode 100644
index 0000000..b0788ce
--- /dev/null
+++ b/shadow-cljs.edn
@@ -0,0 +1,8 @@
+{:deps {:aliases [:frontend]}
+ :dev-http {8080 "public"}
+ :builds
+ {:app
+  {:target :browser
+   :output-dir "public/js"
+   :asset-path "/js"
+   :modules {:main {:entries [tau.core]}}}}}
diff --git a/src/backend/tau/api/channel.clj b/src/backend/tau/api/channel.clj
new file mode 100644
index 0000000..26d3b34
--- /dev/null
+++ b/src/backend/tau/api/channel.clj
@@ -0,0 +1,52 @@
+(ns tau.api.channel
+  (:require
+   [tau.api.stream :as stream]
+   [clojure.java.data :as j]
+   [ring.util.codec :refer [url-decode]])
+  (:import
+   org.schabi.newpipe.extractor.channel.ChannelInfo
+   org.schabi.newpipe.extractor.NewPipe
+   org.schabi.newpipe.extractor.Page))
+
+(defrecord Channel
+    [id name description verified? banner avatar
+     subscriber-count donation-links next-page
+     related-streams])
+
+(defrecord ChannelResult
+    [name description verified? thumbnail-url url
+     subscriber-count stream-count])
+
+(defrecord ChannelPage
+    [next-page related-streams])
+
+(defn get-channel-result
+  [channel]
+  (map->ChannelResult
+   {:name (.getName channel)
+    :thumbnail-url (.getThumbnailUrl channel)
+    :url (.getUrl channel)
+    :description (.getDescription channel)
+    :subscriber-count (.getSubscriberCount channel)
+    :stream-count (.getStreamCount channel)
+    :verified? (.isVerified channel)}))
+
+(defn get-channel-info
+  ([url]
+   (let [info (ChannelInfo/getInfo (url-decode url))]
+     (map->Channel
+      {:id (.getId info)
+       :name (.getName info)
+       :verified? (.isVerified info)
+       :banner (.getBannerUrl info)
+       :avatar (.getAvatarUrl info)
+       :subscriber-count (.getSubscriberCount info)
+       :donation-links (.getDonationLinks info)
+       :next-page (j/from-java (.getNextPage info))
+       :related-streams (map #(stream/get-stream-result %) (.getRelatedItems info))})))
+  ([url page-url]
+   (let [service (NewPipe/getServiceByUrl (url-decode url))
+         info (ChannelInfo/getMoreItems service url (Page. (url-decode page-url)))]
+     (map->ChannelPage
+      {:related-streams (map #(stream/get-stream-result %) (.getItems info))
+       :next-page (j/from-java (.getNextPage info))}))))
diff --git a/src/backend/tau/api/comment.clj b/src/backend/tau/api/comment.clj
new file mode 100644
index 0000000..18881cb
--- /dev/null
+++ b/src/backend/tau/api/comment.clj
@@ -0,0 +1,47 @@
+(ns tau.api.comment
+  (:require
+   [clojure.java.data :as j]
+   [ring.util.codec :refer [url-decode]])
+  (:import
+   org.schabi.newpipe.extractor.NewPipe
+   org.schabi.newpipe.extractor.Page
+   org.schabi.newpipe.extractor.comments.CommentsInfoItem
+   org.schabi.newpipe.extractor.comments.CommentsInfo))
+
+(defrecord CommentsPage
+    [next-page disabled? comments])
+
+(defrecord Comment
+    [id text upload-name upload-avatar upload-date upload-url
+     upload-verified? like-count hearted-by-upload? pinned? replies])
+
+(defn get-comment-result
+  [comment]
+  (map->Comment
+   {:id (.getCommentId comment)
+    :text (.getCommentText comment)
+    :upload-name (.getUploaderName comment)
+    :upload-avatar (.getUploaderAvatarUrl comment)
+    :upload-date (.getTextualUploadDate comment)
+    :upload-url (.getUploaderUrl comment)
+    :upload-verified? (.isUploaderVerified comment)
+    :like-count (.getLikeCount comment)
+    :hearted-by-upload? (.isHeartedByUploader comment)
+    :pinned? (.isPinned comment)
+    :replies (when (.getReplies comment)
+               (j/from-java (.getReplies comment)))}))
+
+(defn get-comments-info
+  ([url]
+   (let [info (CommentsInfo/getInfo (url-decode url))]
+     (map->CommentsPage
+      {:comments (map #(get-comment-result %) (.getRelatedItems info))
+       :next-page (j/from-java (.getNextPage info))
+       :disabled? (.isCommentsDisabled info)})))
+  ([url page-url]
+   (let [service (NewPipe/getServiceByUrl (url-decode url))
+         info (CommentsInfo/getMoreItems service url (Page. (url-decode page-url)))]
+     (map->CommentsPage
+      {:comments (map #(get-comment-result %) (.getItems info))
+       :next-page (j/from-java (.getNextPage info))
+       :disabled? false}))))
diff --git a/src/backend/tau/api/kiosk.clj b/src/backend/tau/api/kiosk.clj
new file mode 100644
index 0000000..81e0030
--- /dev/null
+++ b/src/backend/tau/api/kiosk.clj
@@ -0,0 +1,47 @@
+(ns tau.api.kiosk
+  (:require
+   [clojure.java.data :as j]
+   [tau.api.stream :as stream]
+   [ring.util.codec :refer [url-decode]])
+  (:import
+   org.schabi.newpipe.extractor.StreamingService
+   org.schabi.newpipe.extractor.Page
+   org.schabi.newpipe.extractor.kiosk.KioskInfo
+   org.schabi.newpipe.extractor.NewPipe))
+
+(defrecord KioskList
+    [default-kiosk available-kiosks])
+
+(defrecord Kiosk
+    [id url next-page related-streams])
+
+(defrecord KioskPage
+    [next-page related-streams])
+
+(defn get-kiosk-info
+  ([kiosk-id service-id]
+   (let [service (NewPipe/getService service-id)
+         extractor (.getExtractorById (.getKioskList service) kiosk-id nil)
+         info (KioskInfo/getInfo extractor)]
+     (map->Kiosk
+      {:id (.getId info)
+       :url (.getUrl info)
+       :next-page (j/from-java (.getNextPage info))
+       :related-streams (map #(stream/get-stream-result %) (.getRelatedItems info))})))
+  ([kiosk-id service-id page-url]
+   (let  [service (NewPipe/getService service-id)
+          extractor (.getExtractorById (.getKioskList service) kiosk-id nil)
+          url (url-decode page-url)
+          kiosk-info (KioskInfo/getInfo extractor)
+          info (KioskInfo/getMoreItems service (.getUrl kiosk-info) (Page. url))]
+     (map->KioskPage
+      {:next-page (j/from-java (.getNextPage info))
+       :related-streams (map #(stream/get-stream-result %) (.getItems info))}))))
+
+(defn get-kiosk-list-info
+  [service-id]
+  (let [service (NewPipe/getService service-id)
+        kiosks (.getKioskList service)]
+    (map->KioskList
+     {:default-kiosk (.getDefaultKioskId kiosks)
+      :available-kiosks (.getAvailableKiosks kiosks)})))
diff --git a/src/backend/tau/api/playlist.clj b/src/backend/tau/api/playlist.clj
new file mode 100644
index 0000000..ccc0d6a
--- /dev/null
+++ b/src/backend/tau/api/playlist.clj
@@ -0,0 +1,51 @@
+(ns tau.api.playlist
+  (:require
+   [clojure.java.data :as j]
+   [tau.api.stream :as stream]
+   [ring.util.codec :refer [url-decode]])
+  (:import
+   org.schabi.newpipe.extractor.playlist.PlaylistInfo
+   org.schabi.newpipe.extractor.Page
+   org.schabi.newpipe.extractor.NewPipe))
+
+(defrecord Playlist
+    [id name playlist-type thumbnail-url uploader-name uploader-url
+     uploader-avatar banner-url next-page stream-count related-streams])
+
+(defrecord PlaylistResult
+    [name thumbnail-url url upload-author stream-count])
+
+(defrecord PlaylistPage
+    [next-page related-streams])
+
+(defn get-playlist-result
+  [playlist]
+  (map->PlaylistResult
+   {:name (.getName playlist)
+    :thumbnail-url (.getThumbnailUrl playlist)
+    :url (.getUrl playlist)
+    :upload-author (.getUploaderName playlist)
+    :stream-count (.getStreamCount playlist)}))
+
+(defn get-playlist-info
+  ([url]
+   (let [service (NewPipe/getServiceByUrl (url-decode url))
+         info (PlaylistInfo/getInfo service (url-decode url))]
+     (map->Playlist
+      {:id (.getId info)
+       :name (.getName info)
+       :playlist-type (j/from-java (.getPlaylistType info))
+       :thumbnail-url (.getThumbnailUrl info)
+       :banner-url (.getBannerUrl info)
+       :uploader-name (.getUploaderName info)
+       :uploader-url (.getUploaderUrl info)
+       :uploader-avatar (.getUploaderAvatarUrl info)
+       :stream-count (.getStreamCount info)
+       :next-page (j/from-java (.getNextPage info))
+       :related-streams (map #(stream/get-stream-result %) (.getRelatedItems info))})))
+  ([url page-url]
+   (let [service (NewPipe/getServiceByUrl (url-decode url))
+         info (PlaylistInfo/getMoreItems service url (Page. (url-decode page-url)))]
+     (map->PlaylistPage
+      {:next-page (j/from-java (.getNextPage info))
+       :related-streams (map #(stream/get-stream-result %) (.getItems info))}))))
diff --git a/src/backend/tau/api/search.clj b/src/backend/tau/api/search.clj
new file mode 100644
index 0000000..4969f10
--- /dev/null
+++ b/src/backend/tau/api/search.clj
@@ -0,0 +1,49 @@
+(ns tau.api.search
+  (:require
+   [tau.api.stream :as stream]
+   [tau.api.channel :as channel]
+   [tau.api.playlist :as playlist]
+   [clojure.java.data :as j]
+   [ring.util.codec :refer [url-encode url-decode]])
+  (:import
+   org.schabi.newpipe.extractor.search.SearchInfo
+   org.schabi.newpipe.extractor.InfoItem
+   org.schabi.newpipe.extractor.NewPipe
+   org.schabi.newpipe.extractor.Page))
+
+(defrecord SearchResult
+    [items next-page search-suggestion corrected-search?])
+
+(defrecord SearchResultPage
+    [items next-page])
+
+(defn get-search-results
+  [items]
+  (map #(case (.name (.getInfoType %))
+          "STREAM" (stream/get-stream-result %)
+          "CHANNEL" (channel/get-channel-result %)
+          "PLAYLIST" (playlist/get-playlist-result %))
+       items))
+
+(defn get-search-info
+  ([service-id query content-filters sort-filter]
+   (let [service (NewPipe/getService service-id)
+         query-handler (.. service
+                           (getSearchQHFactory)
+                           (fromQuery query (or content-filters '()) (or sort-filter "")))
+         info (SearchInfo/getInfo service query-handler)]
+     (map->SearchResult
+      {:items (get-search-results (.getRelatedItems info))
+       :next-page (j/from-java (.getNextPage info))
+       :search-suggestion (.getSearchSuggestion info)
+       :corrected-search? (.isCorrectedSearch info)})))
+  ([service-id query content-filters sort-filter page-url]
+   (let [service (NewPipe/getService service-id)
+         url (url-decode page-url)
+         query-handler (.. service
+                           (getSearchQHFactory)
+                           (fromQuery query (or content-filters '()) (or sort-filter "")))
+         info (SearchInfo/getMoreItems service query-handler (Page. url))]
+     (map->SearchResultPage
+      {:items (get-search-results (.getItems info))
+       :next-page (j/from-java (.getNextPage info))}))))
diff --git a/src/backend/tau/api/service.clj b/src/backend/tau/api/service.clj
new file mode 100644
index 0000000..de2e994
--- /dev/null
+++ b/src/backend/tau/api/service.clj
@@ -0,0 +1,24 @@
+(ns tau.api.service
+  (:require
+   [clojure.java.data :as j]
+   [tau.api.kiosk :as kiosk])
+  (:import
+   org.schabi.newpipe.extractor.NewPipe
+   org.schabi.newpipe.extractor.kiosk.KioskList
+   org.schabi.newpipe.extractor.StreamingService))
+
+(defrecord Service
+    [id info base-url kiosk-list])
+
+(defn get-service-info
+  [service]
+  (map->Service
+   {:id (.getServiceId service)
+    :info (j/from-java (.getServiceInfo service))
+    :base-url (.getBaseUrl service)
+    :kiosk-list (map #(kiosk/get-kiosk-info % (.getServiceId service))
+                     (.getAvailableKiosks (.getKioskList service)))}))
+
+(defn get-service-list-info
+  []
+  (map #(get-service-info %) (NewPipe/getServices)))
diff --git a/src/backend/tau/api/stream.clj b/src/backend/tau/api/stream.clj
new file mode 100644
index 0000000..d0a7c81
--- /dev/null
+++ b/src/backend/tau/api/stream.clj
@@ -0,0 +1,66 @@
+(ns tau.api.stream
+  (:require
+   [clojure.java.data :as j]
+   [ring.util.codec :refer [url-decode]])
+  (:import
+   org.schabi.newpipe.extractor.stream.StreamInfo
+   org.schabi.newpipe.extractor.NewPipe
+   org.schabi.newpipe.extractor.localization.DateWrapper
+   java.time.Instant))
+
+(defrecord Stream
+    [name description upload-date
+     upload-author upload-url upload-avatar
+     thumbnail-url service-id duration view-count like-count
+     dislike-count subscriber-count upload-verified? hls-url
+     dash-mpd-url category tags audio-streams video-streams
+     related-streams])
+
+(defrecord StreamResult
+    [name url thumbnail-url upload-author upload-url
+     upload-avatar upload-date short-description
+     duration view-count uploaded verified?])
+
+(defn get-stream-result
+  [stream]
+  (map->StreamResult
+   {:url (.getUrl stream)
+    :name (.getName stream)
+    :thumbnail-url (.getThumbnailUrl stream)
+    :upload-author (.getUploaderName stream)
+    :upload-url (.getUploaderUrl stream)
+    :upload-avatar (.getUploaderAvatarUrl stream)
+    :upload-date (.getTextualUploadDate stream)
+    :short-description (.getShortDescription stream)
+    :duration (.getDuration stream)
+    :view-count (.getViewCount stream)
+    :uploaded (if (.getUploadDate stream)
+                (.. stream (getUploadDate) (offsetDateTime) (toInstant) (toEpochMilli))
+                -1)
+    :verified? (.isUploaderVerified stream)}))
+
+(defn get-stream-info
+  [url]
+  (let [info (StreamInfo/getInfo (url-decode url))]
+    (map->Stream
+     {:name (.getName info)
+      :description (.. info (getDescription) (getContent))
+      :upload-date (.getTextualUploadDate info)
+      :upload-author (.getUploaderName info)
+      :upload-url (.getUploaderUrl info)
+      :upload-avatar (.getUploaderAvatarUrl info)
+      :upload-verified? (.isUploaderVerified info)
+      :service-id (.getServiceId info)
+      :thumbnail-url (.getThumbnailUrl info)
+      :duration (.getDuration info)
+      :tags (.getTags info)
+      :category (.getCategory info)
+      :view-count (.getViewCount info)
+      :like-count (.getLikeCount info)
+      :dislike-count (.getDislikeCount info)
+      :subscriber-count (.getUploaderSubscriberCount info)
+      :audio-streams (j/from-java (.getAudioStreams info))
+      :video-streams (j/from-java (.getVideoStreams info))
+      :hls-url (.getHlsUrl info)
+      :dash-mpd-url (.getDashMpdUrl info)
+      :related-streams (map #(get-stream-result %) (.getRelatedStreams info))})))
diff --git a/src/backend/tau/core.clj b/src/backend/tau/core.clj
new file mode 100644
index 0000000..8fb8b07
--- /dev/null
+++ b/src/backend/tau/core.clj
@@ -0,0 +1,11 @@
+(ns tau.core
+  (:require
+   [tau.services.http :as http]))
+
+(defn -main
+  [& _]
+  (http/start-server! 3000))
+
+(defn reset
+  []
+  (http/stop-server!))
diff --git a/src/backend/tau/downloader_impl.clj b/src/backend/tau/downloader_impl.clj
new file mode 100644
index 0000000..8a62821
--- /dev/null
+++ b/src/backend/tau/downloader_impl.clj
@@ -0,0 +1,64 @@
+(ns tau.downloader-impl
+  (:import
+   [org.schabi.newpipe.extractor.downloader Response Request]
+   [okhttp3 Request$Builder OkHttpClient$Builder RequestBody])
+  (:gen-class
+   :extends org.schabi.newpipe.extractor.downloader.Downloader
+   :constructors {[okhttp3.OkHttpClient$Builder] []}
+   :name tau.DownloaderImpl
+   :init downloader-impl
+   :state state
+   :methods [#^{:static true} [init [] tau.DownloaderImpl]
+             #^{:static true} [getInstance [] tau.DownloaderImpl]]
+   :prefix "-"
+   :main false))
+
+(def user-agent "Mozilla/5.0 (Windows NT 10.0; rv:91.0) Gecko/20100101 Firefox/91.0")
+(def instance (atom nil))
+
+(defn -downloader-impl [builder]
+  [[] (atom {:client
+             (.. builder
+                 (readTimeout 30 (java.util.concurrent.TimeUnit/SECONDS))
+                 (build))})])
+
+(defn -init
+  ([]
+   (-init (OkHttpClient$Builder.)))
+  ([builder]
+   (reset! instance (tau.DownloaderImpl. builder))))
+
+(defn -getInstance []
+  (if @instance @instance (-init)))
+
+(defn -execute [this request]
+  (let [http-method (.httpMethod request)
+        url (.url request)
+        headers (.headers request)
+        data-to-send (.dataToSend request)
+        request-body (when data-to-send (RequestBody/create nil data-to-send))
+        request-builder (.. (Request$Builder.)
+                            (method http-method request-body)
+                            (url url)
+                            (addHeader "User-Agent" user-agent))]
+    (doseq [pair (.entrySet headers)]
+      (let [header-name (.getKey pair)
+            header-value-list (.getValue pair)]
+        (if (> (.size header-value-list) 1)
+          (do
+            (.removeHeader request-builder header-name)
+            (doseq [header-value header-value-list]
+              (.addHeader request-builder header-name header-value)))
+          (if (= (.size header-value-list) 1)
+            (.header request-builder header-name (.get header-value-list 0))))))
+    (let [response (.. (@(.state this) :client) (newCall (.build request-builder)) (execute))
+          body (.body response)
+          response-body-to-return (when body (.string body))
+          latest-url (.. response (request) (url) (toString))]
+      (when (= (.code response) 429)
+        (.close response))
+      (Response. (.code response)
+                 (.message response)
+                 (.. response (headers) (toMultimap))
+                 response-body-to-return
+                 latest-url))))
diff --git a/src/backend/tau/services/http.clj b/src/backend/tau/services/http.clj
new file mode 100644
index 0000000..6101b52
--- /dev/null
+++ b/src/backend/tau/services/http.clj
@@ -0,0 +1,73 @@
+(ns tau.services.http
+  (:require
+   [org.httpkit.server :refer [run-server]]
+   [ring.middleware.reload :refer [wrap-reload]]
+   [ring.middleware.params :refer [wrap-params]]
+   [ring.middleware.json :refer [wrap-json-response]]
+   [ring.util.response :refer [response]]
+   [compojure.route :as route]
+   [compojure.core :refer :all]
+   [compojure.coercions :refer [as-int]]
+   [clojure.string :as str]
+   [tau.api.stream :as stream]
+   [tau.api.search :as search]
+   [tau.api.channel :as channel]
+   [tau.api.playlist :as playlist]
+   [tau.api.comment :as comment]
+   [tau.api.kiosk :as kiosk]
+   [tau.api.service :as service])
+  (:import
+   tau.DownloaderImpl
+   org.schabi.newpipe.extractor.NewPipe
+   org.schabi.newpipe.extractor.localization.Localization))
+
+(defonce server (atom nil))
+
+(defn stop-server!
+  []
+  (when @server
+    (@server :timeout 100)
+    (reset! server nil)))
+
+(defroutes app-routes
+  (context "/api" []
+           (GET "/stream" [url]
+                (response (stream/get-stream-info url)))
+           (GET "/search" [serviceId :<< as-int q sortFilter contentFilters nextPage]
+                (let [content-filters (when contentFilters (str/split contentFilters #","))]
+                  (response (if nextPage
+                              (search/get-search-info serviceId q content-filters sortFilter nextPage)
+                              (search/get-search-info serviceId q content-filters sortFilter)))))
+           (GET "/channel" [url nextPage]
+                (if nextPage
+                  (response (channel/get-channel-info url nextPage))
+                  (response (channel/get-channel-info url))))
+           (GET "/playlist" [url nextPage]
+                (if nextPage
+                  (response (playlist/get-playlist-info url nextPage))
+                  (response (playlist/get-playlist-info url))))
+           (GET "/comments" [url nextPage]
+                (if nextPage
+                  (response (comment/get-comments-info url nextPage))
+                  (response (comment/get-comments-info url))))
+           (GET "/services" []
+                (response (service/get-service-list-info)))
+           (context "/kiosks" []
+                    (GET "/" [serviceId :<< as-int]
+                         (response (kiosk/get-kiosk-list-info serviceId)))
+                    (GET "/:kioskId" [kioskId serviceId :<< as-int nextPage]
+                         (if nextPage
+                           (response (kiosk/get-kiosk-info kioskId serviceId nextPage))
+                           (response (kiosk/get-kiosk-info kioskId serviceId)))))))
+
+(defn make-handler
+  []
+  (-> #'app-routes
+      wrap-params
+      (wrap-json-response {:pretty true})
+      wrap-reload))
+
+(defn start-server!
+  [port]
+  (NewPipe/init (DownloaderImpl/init) (Localization. "en" "GB"))
+  (reset! server (run-server (make-handler) {:port port})))
diff --git a/src/backend/tau/utils.clj b/src/backend/tau/utils.clj
new file mode 100644
index 0000000..41c0086
--- /dev/null
+++ b/src/backend/tau/utils.clj
@@ -0,0 +1 @@
+(ns tau.utils)
diff --git a/src/frontend/tau/core.cljs b/src/frontend/tau/core.cljs
new file mode 100644
index 0000000..e2417cc
--- /dev/null
+++ b/src/frontend/tau/core.cljs
@@ -0,0 +1,4 @@
+(ns tau.core)
+
+(defn mount-app
+  [])