feat(scripts): meteo

configs/packages/default.nix

@@ -119,6 +119,7 @@ in {
     scripts.playlist
     scripts.devanagari
     scripts.betacode # ancient greek betacode to unicode converter
+    scripts.meteo
     nur.repos.kmein.mahlzeit
     # nur.repos.kmein.slide
     nur.repos.kmein.vimv

packages/scripts/default.nix

@@ -94,6 +94,12 @@ in rec {
     name = "tag";
   };
 
+  meteo = wrapScript {
+    packages = [ pkgs.jq pkgs.curl pkgs.xdotool pkgs.sxiv pkgs.gnused ];
+    script = ./meteo.sh;
+    name = "meteo";
+  };
+
   booksplit = wrapScript {
     packages = [ pkgs.ffmpeg tag ];
     script = "${voidrice}/.local/bin/booksplit";

packages/scripts/meteo.sh

@@ -0,0 +1,76 @@
+#! /bin/sh
+# usage: meteo --list
+# usage: meteo --update
+# usage: meteo STATION
+set -efu
+
+# TODO XDG
+CONFIG_DIR=$HOME/.config/wetter
+STATIONS_FILE=$CONFIG_DIR/stations.json
+
+case ${1-} in
+  --list)
+    sed -n 's/^\s*\(--[^)]\+\))$/\1/p' "$0"
+    jq -r -n \
+    --slurpfile stations_file "$STATIONS_FILE" \
+    '
+      $stations_file[0] as $known_stations |
+
+      $known_stations | keys[]
+    '
+    exit
+  ;;
+  --update)
+    mkdir -p "$(dirname "$STATIONS_FILE")"
+    exec >"$STATIONS_FILE"
+
+    curl -fsS http://wetterstationen.meteomedia.de/ |
+    jq -Rrs '
+      def decodeHTML:
+        gsub("ä";"ä") |
+        gsub("ö";"ö") |
+        gsub("ü";"ü") |
+        gsub("Ä";"Ä") |
+        gsub("Ö";"Ö") |
+        gsub("Ü";"Ü") |
+        gsub("ß";"ß")
+        ;
+      [
+        match(".*<option value=\"/\\?map=Deutschland&station=(?<station>[0-9]+)\">(?<name>[^<]+)</option>";"g")
+        .captures |
+        map({"\(.name)":(.string)}) |
+        add |
+        {"\(.name|decodeHTML)":(.station|tonumber)}
+      ] |
+      add
+    '
+    exit
+  ;;
+esac
+
+# set -x
+
+station=${1-103840}
+station=$(jq -e -n \
+--arg station "$station" \
+--slurpfile stations_file "$STATIONS_FILE" \
+'
+  $stations_file[0] as $known_stations |
+
+  $station |
+  if test("^[0-9]+$") then
+    tonumber
+  else
+    $known_stations[.]
+  end
+')
+cache="/tmp/${LOGNAME}_wetter_$station.png"
+curl -sS \
+    "http://wetterstationen.meteomedia.de/messnetz/vorhersagegrafik/$station.png" \
+    -o "$cache"
+
+if window_id=$(xdotool search --name "^sxiv - $cache$"); then
+  xdotool key --window "$window_id" r
+else
+  sxiv "$cache" &
+fi