From bd200b655d7ccfd158e1184234622bddcc2b1c2d Mon Sep 17 00:00:00 2001
From: =?UTF-8?q?Kier=C3=A1n=20Meinhardt?= <kmein@posteo.de>
Date: Wed, 7 Apr 2021 09:45:36 +0200
Subject: [PATCH] feat(scripts): meteo

---
 configs/packages/default.nix |  1 +
 packages/scripts/default.nix |  6 +++
 packages/scripts/meteo.sh    | 76 ++++++++++++++++++++++++++++++++++++
 3 files changed, 83 insertions(+)
 create mode 100755 packages/scripts/meteo.sh

diff --git a/configs/packages/default.nix b/configs/packages/default.nix
index ffe77bc..a66fee3 100644
--- a/configs/packages/default.nix
+++ b/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
diff --git a/packages/scripts/default.nix b/packages/scripts/default.nix
index 714d6f1..9591022 100644
--- a/packages/scripts/default.nix
+++ b/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 = "${voidrice}/.local/bin/booksplit";
diff --git a/packages/scripts/meteo.sh b/packages/scripts/meteo.sh
new file mode 100755
index 0000000..7e91201
--- /dev/null
+++ b/packages/scripts/meteo.sh
@@ -0,0 +1,76 @@
+#! /bin/sh
+# usage: meteo --list
+# usage: meteo --update
+# usage: meteo STATION
+set -efu
+
+# TODO XDG
+CONFIG_DIR=$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("&auml;";"ä") |
+        gsub("&ouml;";"ö") |
+        gsub("&uuml;";"ü") |
+        gsub("&Auml;";"Ä") |
+        gsub("&Ouml;";"Ö") |
+        gsub("&Uuml;";"Ü") |
+        gsub("&szlig;";"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