fix(radio): clean up files after 1h

lib/streams.nix

@@ -64,6 +64,12 @@ in [
     logo = "https://www.lyrikline.org/themes/lyrik/svg/Logo_lyrikline_pure.svg";
     desc = "24/7 zufällige Wiedergaben von lyrikline.org.";
   }
+  {
+    stream = "https://radio.kmein.de/wikipedia.ogg";
+    station = "Wikipedia";
+    desc = "Zufällige Wikipedia-Artikel";
+    logo = "https://de.wikipedia.org/wiki/Wikipedia:Enzyklop%C3%A4die/Logo_von_Wikipedia#/media/Datei:Wikipedia-logo-v2.svg";
+  }
   {
     stream = "http://162.244.80.20:6948";
     station = "Cool Jazz Florida";
@@ -1167,15 +1173,15 @@ importJSON ./radiorecord.json
     station = "Dhol Radio";
     desc = "ਪੰਜਾਬੀ ਸੰਗੀਤ";
   }
-  { logo = bhaktiworld-logo; stream = bhaktiworld "2bhanuman"; station = bhaktiworld-name "Hanuman"; }
-  { logo = bhaktiworld-logo; stream = bhaktiworld "djbeat"; station = bhaktiworld-name "Mantra Shakti"; }
-  { logo = bhaktiworld-logo; stream = bhaktiworld "gurbani"; station = bhaktiworld-name "Sangam"; }
-  { logo = bhaktiworld-logo; stream = bhaktiworld "hot"; station = bhaktiworld-name "Shiv"; }
-  { logo = bhaktiworld-logo; stream = bhaktiworld "ibadat"; station = bhaktiworld-name "Devi Maa"; }
-  { logo = bhaktiworld-logo; stream = bhaktiworld "iskon2b"; station = bhaktiworld-name "Om Sai"; }
-  { logo = bhaktiworld-logo; stream = bhaktiworld "millenniumhits"; station = bhaktiworld-name "Krishna"; }
-  { logo = bhaktiworld-logo; stream = bhaktiworld "dard"; station = bhaktiworld-name "Shri Ram"; }
-  { logo = bhaktiworld-logo; stream = bhaktiworld "bhaktiworldindia"; station = bhaktiworld-name "Ganesh"; }
+  { stream = bhaktiworld "2bhanuman"; station = bhaktiworld-name "Hanuman"; }
+  { stream = bhaktiworld "djbeat"; station = bhaktiworld-name "Mantra Shakti"; }
+  { stream = bhaktiworld "gurbani"; station = bhaktiworld-name "Sangam"; }
+  { stream = bhaktiworld "hot"; station = bhaktiworld-name "Shiv"; }
+  { stream = bhaktiworld "ibadat"; station = bhaktiworld-name "Devi Maa"; }
+  { stream = bhaktiworld "iskon2b"; station = bhaktiworld-name "Om Sai"; }
+  { stream = bhaktiworld "millenniumhits"; station = bhaktiworld-name "Krishna"; }
+  { stream = bhaktiworld "dard"; station = bhaktiworld-name "Shri Ram"; }
+  { stream = bhaktiworld "bhaktiworldindia"; station = bhaktiworld-name "Ganesh"; }
   {
     station = "Rockabilly Radio";
     stream = "http://lin3.ash.fast-serv.com:6026/stream_96";

systems/makanek/configuration.nix

@@ -14,7 +14,7 @@ in
     ./moodle-dl-borsfaye.nix
     ./names.nix
     ./nextcloud.nix
-    ./radio
+    ./radio.nix
     ./retiolum-map.nix
     ./tarot.nix
     ./urlwatch.nix

systems/makanek/radio.nix

@@ -1,5 +1,7 @@
 { lib, pkgs, config, ... }:
 let
+  inherit (import <niveum/lib>) tmpfilesConfig;
+  liquidsoapDirectory = "/var/cache/liquidsoap";
   icecastPassword = "hackme";
   lyrikline-poem = pkgs.writers.writeDash "lyrikline.sh" ''
     set -efu
@@ -21,7 +23,7 @@ let
     author="$(${pkgs.htmlq}/bin/htmlq -f "$html" --text '#gedicht-autor')"
     title="$(${pkgs.htmlq}/bin/htmlq -f "$html" --text .gedicht-originaltitel)"
 
-    echo "annotate:title=\"$title\",album=\"$poem_url\",artist=\"$author\":$poem_file"
+    echo "annotate:title=\"$title | $poem_url\",artist=\"$author\":$poem_file"
   '';
   stavenhagen-poem = pkgs.writers.writeDash "stavenhagen.sh" ''
     base=https://www.deutschelyrik.de
@@ -36,50 +38,87 @@ let
 
     ${pkgs.curl}/bin/curl -sSL "$base/$poem" > "$html"
 
-    printf "annotate:title=\"%s\",album=\"%s\",artist=\"%s\":$base/%s\n" \
+    printf "annotate:title=\"%s | %s\",artist=\"%s\":$base/%s\n" \
       "$(${pkgs.htmlq}/bin/htmlq --text '.ce_text h1' -f "$html")" \
       "$base/$poem" \
       "$(${pkgs.htmlq}/bin/htmlq --text 'h1 + p em' -f "$html")" \
       "$(${pkgs.htmlq}/bin/htmlq 'audio source' --attribute src -f "$html")"
   '';
+  wikipedia-article = pkgs.writers.writeDash "wikipedia.sh" ''
+    set -efu
+    opus=$(mktemp ${liquidsoapDirectory}/wikipedia.XXX.opus)
+
+    html=$(mktemp)
+    trap clean EXIT
+    clean() {
+      rm "$html"
+    }
+
+    ${pkgs.curl}/bin/curl -sSL https://de.wikipedia.org/wiki/Spezial:Zuf%C3%A4llige_Seite > "$html"
+
+    ${pkgs.htmlq}/bin/htmlq '.mw-parser-output p' --text -f "$html" \
+      | ${pkgs.gnused}/bin/sed 's/\[[0-9]\+]//g' \
+      | ${pkgs.espeak}/bin/espeak -v german-mbrola-6 -w /dev/stdout \
+      | ${pkgs.opusTools}/bin/opusenc --quiet - "$opus"
+
+    printf "annotate:title=\"%s\":%s" \
+      "$(${pkgs.htmlq}/bin/htmlq -f "$html" --text h1)" \
+      "$opus"
+  '';
 in {
   # https://github.com/savonet/liquidsoap/issues/1043#issuecomment-593354427
   services.liquidsoap.streams.radio = pkgs.writeText "lyrikline.liq" ''
     set("protocol.external.curl","${pkgs.curl}/bin/curl")
 
-    def random_lyrikline() =
-      uri = list.hd(default="", get_process_lines("${lyrikline-poem}"))
-      request.create(uri, persistent=true)
+    def random_url(script) =
+      mksafe(audio_to_stereo(request.dynamic.list(
+        fun () -> list.map(request.create, get_process_lines(script))
+      )))
     end
 
-    def random_stavenhagen() =
-      uri = list.hd(default="", get_process_lines("${stavenhagen-poem}"))
-      request.create(uri, persistent=true)
-    end
-
-    lyrikline = mksafe(audio_to_stereo(request.dynamic(random_lyrikline)))
-
     output.icecast(
       mount = '/lyrikline.ogg',
       port = ${toString config.services.icecast.listen.port},
       password = "${icecastPassword}",
       description = "lyrikline. listen to the poet (unofficial)",
-      %vorbis(quality = 1),
-      lyrikline
+      %vorbis,
+      random_url("${lyrikline-poem}")
     )
 
-    stavenhagen = mksafe(audio_to_stereo(request.dynamic(random_stavenhagen)))
-
     output.icecast(
       mount = '/lyrik.ogg',
       port = ${toString config.services.icecast.listen.port},
       password = "${icecastPassword}",
       description = "Lyrik für alle – Neue Lust auf Lyrik | www.deutschelyrik.de",
-      %vorbis(quality = 1),
-      stavenhagen
+      %vorbis,
+      random_url("${stavenhagen-poem}")
+    )
+
+    output.icecast(
+      mount = '/wikipedia.ogg',
+      port = ${toString config.services.icecast.listen.port},
+      password = "${icecastPassword}",
+      description = "Zufällige Artikel von Wikipedia",
+      genre = "useless knowledge",
+      %vorbis,
+      random_url("${wikipedia-article}")
     )
   '';
 
+  systemd.services.radio.environment.TMPDIR = liquidsoapDirectory;
+
+  systemd.tmpfiles.rules = [
+    (tmpfilesConfig {
+      type = "d";
+      path = liquidsoapDirectory;
+      mode = "0750";
+      user = "liquidsoap";
+      group = "liquidsoap";
+      age = "1h";
+    })
+  ];
+
+
   services.icecast = {
     enable = true;
     hostname = "radio.kmein.de";
@@ -87,7 +126,7 @@ in {
     listen.port = 6457;
     extraConf = ''
       <authentication>
-       <source-password>${icecastPassword}</source-password>
+        <source-password>${icecastPassword}</source-password>
       </authentication>
     '';
   };

systems/makanek/radio/station-list.nix

@@ -1,43 +0,0 @@
-{ pkgs, lib, stations }:
-let
-  theStations = lib.mapAttrsToList (name: value: value // {name = name;}) stations;
-in
-pkgs.writeText "index.html" ''
-  <!doctype html>
-  <html>
-    <head>
-      <title>radio.kierán</title>
-      <link
-        rel="stylesheet"
-        href="//cdn.rawgit.com/necolas/normalize.css/master/normalize.css"
-      />
-      <link
-        rel="stylesheet"
-        href="https://cdnjs.cloudflare.com/ajax/libs/bulma/0.9.2/css/bulma.min.css"
-      />
-      <meta name="viewport" content="width=device-width, initial-scale=1" />
-      <meta charset="utf-8" />
-    </head>
-    <body>
-      <main class="section">
-        <div class="subtitle is-3">Welcome to</div>
-        <h1 class="title is-1">radio.kierán</h1>
-
-        <div class="columns is-multiline">
-          ${lib.concatMapStringsSep "\n" (station: ''
-            <div class="column">
-              <div class="box">
-                <strong class="is-uppercase">${station.name}</strong>
-                (<a href="/${station.name}/status">status</a>, <a href="/${station.name}/listen.ogg">link</a>)
-
-                <p class="has-text-grey">${station.description}</p>
-                <hr/>
-                <audio style="width:100%" controls src="/${station.name}/listen.ogg"/>
-              </div>
-            </div>'') theStations
-          }
-        </div>
-      </main>
-    </body>
-  </html>
-''