feat: check for the existence of Zola binary before running Zola cmds

scripts/zola.sh

@@ -17,10 +17,11 @@
 
 set -euo pipefail
 
+readonly PROJECT_ROOT=$(pwd)
 readonly TARBALL=zola.tar.gz
 readonly SOURCE="https://github.com/getzola/zola/releases/download/v0.15.3/zola-v0.15.3-x86_64-unknown-linux-gnu.tar.gz"
 
-readonly BIN_PATH=bin
+readonly BIN_PATH=tmp/bin
 readonly BIN=$BIN_PATH/zola
 
 readonly DIST=public
@@ -43,11 +44,17 @@ EOF
 }
 
 download() {
-	echo "Downloading Zola"
-	wget --quiet --output-document=$TARBALL $SOURCE
-	tar -xvzf $TARBALL > /dev/null
-	rm $TARBALL
-	echo "Downloaded zola into $BIN" 
+	if [ ! -e $BIN_PATH ];
+	then
+		mkdir -p $BIN_PATH
+		cd $BIN_PATH
+		echo "[*] Downloading Zola"
+		wget --quiet --output-document=$TARBALL $SOURCE
+		tar -xvzf $TARBALL > /dev/null
+		rm $TARBALL
+		echo "[*] Downloaded zola into $BIN"
+		cd $PROJECT_ROOT
+	fi
 }
 
 init() {
@@ -78,10 +85,11 @@ no_absolute_url() {
 clean() {
 	rm -rf $BIN_PATH || true
 	rm -rf $DIST || true
-	echo "Workspace cleaned"
+	echo "[*] Workspace cleaned"
 }
 
 check_arg $1
+download
 
 if match_arg $1 'i' 'install'
 then