zsh: alarm: add elapsed time

functions/misc.zsh

@@ -75,22 +75,46 @@ function alarm {
         echo "Usage: alarm 5[s]|5m|1h"
         return 1
     fi
+    value=$1
+
     local t
-    if [[ $1 = *"m" ]]; then
-        t=$((${1/m/}*60))
-        extra="($1)"
-    elif [[ $1 = *"h" ]]; then
-        t=$((${1/h/}*3600))
-        extra="($1)"
-    elif [[ $1 = *"s" ]]; then
-        t=${1/s/}
+    if [[ $value = *"m" ]]; then
+        t=$((${value/m/}*60))
+    elif [[ $value = *"h" ]]; then
+        t=$((${value/h/}*3600))
+    elif [[ $value = *"s" ]]; then
+        t=${value/s/}
     else
-        t=$1
+        t=$value
     fi
 
-    echo "Setting a timer for $1 $extra"
+    function format(){
+        if [[ $1 -lt 60 ]]; then
+            printf "00:%02is" $1
+            return
+        fi
 
-    sleep $t && beeper
+        if [[ $1 -lt 3600 ]]; then
+            minutes=$(($1/60))
+            seconds=$(($1%60))
+            printf "%02dm:%02dm" $minutes $seconds
+            return
+        fi
+
+        hours=$(($1/3600))
+        remainder=$(($1%3600))
+        printf "%dh:%s" hours "$(format $remainder)"
+    }
+
+    count=$t
+    while [[ $count -ge 0 ]]; do
+        echo -en "Set a timer for $1 │ remaining=$(format $count)"
+        count=$((count-1))
+        sleep 1
+        echo -en "\r"
+    done
+    echo -e "\nDone!"
+    beeper
 }