Add CGM direction arrow to Waybar

scripts/.local/share/scripts/cgm-value

@@ -1,14 +1,33 @@
 #!/bin/sh
 
+NIGHTSCOUT_URL="https://nightscout.coolneng.duckdns.org"
+CONNECTIVITY_URL="freebsd.org"
+
 fetch_value() {
     CGM_VALUE=$(curl -s -H "api-secret: $(pass api/nightscout)" -H "accept: application/json" \
-        "https://nightscout.coolneng.duckdns.org/api/v1/entries?count=1" |
+        "$NIGHTSCOUT_URL/api/v1/entries?count=1")
-        grep -o '"sgv":[0-9]*' | cut -d ":" -f 2)
+    GLUCOSE=$(echo "$CGM_VALUE" | grep -o '"sgv":[0-9]*' | cut -d ":" -f 2)
-    echo "$CGM_VALUE"
+    DIRECTION=$(
+        echo "$CGM_VALUE" | grep -o '"direction":"[a-zA-Z]*"' | cut -d ":" -f 2 | tr -d \"
+    )
+}
+
+format_output() {
+    case "$DIRECTION" in
+        *"Up"*)
+            printf "{\"text\": \"%s\",\"alt\": \"up\"}" "$GLUCOSE"
+            ;;
+        *"Down"*)
+            printf "{\"text\": \"%s\",\"alt\": \"down\"}" "$GLUCOSE"
+            ;;
+        "Flat")
+            printf "{\"text\": \"%s\",\"alt\": \"flat\"}" "$GLUCOSE"
+            ;;
+    esac
 }
 
 check_connectivity() {
-    if nc -zw1 freebsd.org 443; then
+    if nc -zw1 "$CONNECTIVITY_URL" 443; then
         fetch_value
     else
         echo "NA"
@@ -16,3 +35,4 @@ check_connectivity() {
 }
 
 check_connectivity
+format_output

waybar/.config/waybar/config

@@ -80,8 +80,14 @@
         "interval": 2
     },
     "custom/cgm-value": {
-        "format": "<span foreground='#88C0D0'>󱄦</span> {}",
+        "format": "<span foreground='#88C0D0'>󱄦</span> {}{icon} ",
         "exec": "$HOME/.local/share/scripts/cgm-value",
-        "interval": 2
+        "interval": 2,
+        "return-type":"json",
+        "format-icons": {
+         "up": "󰁜",
+         "down": "󰁃",
+         "flat": "󰁔",
+        }
     }
 }