Simplify and cleanup push functions

.config/fish/functions/push.fish

@@ -0,0 +1,25 @@
+function push -a message -d 'Send a push notification to your phone via pushover (optional delay as second arg)'
+    argparse 'u/url=' 'p/priority=' -- $argv
+
+    set -l host (cat /etc/hostname)
+
+    if test -z "$_flag_p"
+        set _flag_p '0'
+    end
+
+    set payload \
+        "{
+  \"token\": \"$pushover_token\",
+  \"user\": \"$pushover_user\",
+  \"title\": \"Push from $host\",
+  \"url\": \"$_flag_u\",
+  \"priority\": $_flag_p,
+  \"message\": \"$message\"
+}"
+
+    curl \
+        -X POST \
+        -H 'Content-Type: application/json' \
+        -d "$payload" \
+        https://api.pushover.net/1/messages.json
+end