wtf: further improvements

system/desktop/wtf.nix

@@ -3,6 +3,38 @@ let
 
   unstable = import <nixpkgs-unstable> { };
 
+  networkStatus = let
+
+    q-online = ''
+      if ${pkgs.curl}/bin/curl -s google.com >/dev/null; then
+        echo 'status: online'
+      else
+        echo 'status: offline '
+      fi
+    '';
+
+    q-wireless = ''
+      for dev in $(
+        ${pkgs.iw}/bin/iw dev \
+          | ${pkgs.gnused}/bin/sed -n 's/^\s*Interface\s\+\([0-9a-z]\+\)$/\1/p'
+      ); do
+        inet=$(${pkgs.iproute}/bin/ip addr show $dev \
+          | ${pkgs.gnused}/bin/sed -n 's/.*inet \([0-9]\+\.[0-9]\+\.[0-9]\+\.[0-9]\+\).*/\1/p') \
+          || unset inet
+        ssid=$(${pkgs.iw}/bin/iw dev $dev link \
+          | ${pkgs.gnused}/bin/sed -n 's/.*\tSSID: \(.*\)/\1/p' \
+          | ${pkgs.coreutils}/bin/tr -d '\r') \
+          || unset ssid
+        printf '%s: %s %s\n' $dev ''${inet+ $inet} ''${ssid+ $ssid}
+      done
+    '';
+
+  in pkgs.writers.writeBash "network-status" ''
+    ${q-wireless}
+    ${q-online}
+    ${pkgs.coreutils}/bin/uptime
+  '';
+
   taskNextWeek = pkgs.writers.writeDash "taskweek" ''
     ${pkgs.taskwarrior}/bin/task \
                         export \
@@ -183,15 +215,6 @@ let
           refreshInterval = 3600;
         };
 
-        uptime = cmdRunner {
-          title = "uptime";
-          cmd = "uptime";
-          top = 3;
-          left = 1;
-          height = 1;
-          width = 3;
-        };
-
         active-users = cmdRunner {
           title = "users";
           cmd = activeUsers;
@@ -221,6 +244,26 @@ let
           width = 2;
           refreshInterval = 60;
         };
+
+        network-status = cmdRunner {
+          title = "network status";
+          cmd = networkStatus;
+          top = 3;
+          left = 1;
+          height = 1;
+          width = 3;
+          refreshInterval = 60;
+        };
+
+        uptime = cmdRunner {
+          enabled = false;
+          title = "uptime";
+          cmd = "uptime";
+          top = 3;
+          left = 1;
+          height = 1;
+          width = 3;
+        };
       };
     };
   };