From 436c78fb7f1e8f53543d070fb450168385a2057a Mon Sep 17 00:00:00 2001
From: Guido Longoni <guido.longoni@briq.it>
Date: Sat, 1 Feb 2020 15:12:30 +0100
Subject: [PATCH] completato npm.sh

---
 featlib/npm.sh | 57 +++++++++++++++++++++++++++++++++++++++++++++++++-
 1 file changed, 56 insertions(+), 1 deletion(-)

diff --git a/featlib/npm.sh b/featlib/npm.sh
index ce36757..775b4fa 100755
--- a/featlib/npm.sh
+++ b/featlib/npm.sh
@@ -28,4 +28,59 @@ function feat_add_npm() {
     npm install -g n
 }
 
-#TODO: aggiungere npm_feat_needed e tutte le altre funzioni correlate 
\ No newline at end of file
+function npm_initialized() {
+    [ -s 'package.json' ]
+}
+
+function npm_feat_added() {
+	npm list >/dev/null 2>&1 | grep -q "$FEAT@"
+}
+
+function npm-g_feat_added() {
+	npm list -g >/dev/null 2>&1 | grep -q "$FEAT@"
+}
+
+function npm_feat_missing() {
+    npm list 2>&1 >/dev/null | grep -q 'missing[^ ]* *'"$FEAT"'@' 
+}
+
+function npm-g_feat_add() {
+	npm install -g npm
+	npm install -g "$1"
+}
+
+function npm_feat_add() {
+	npm install -g npm
+	npm install "$1"
+}
+
+function npm_feat_needed() {
+	feat_needed "npm"
+	FEAT="$1"
+	if ! npm_initialized; then
+		npm init -y
+	fi
+	if npm_feat_added "$FEAT"; then
+		if npm_feat_missing "$FEAT"; then
+			npm install
+		fi
+	else
+		if type "npm_feat_add_$FEAT" > /dev/null 2>&1 ; then
+			eval "npm_feat_add_$FEAT"
+		else
+			npm_feat_add "$FEAT"
+		fi
+	fi
+}
+
+function npm-g_feat_needed() {
+	feat_needed "npm"
+	FEAT="$1"
+	if ! npm-g_feat_added "$FEAT"; then
+		if type "npm-g_feat_add_$FEAT" > /dev/null 2>&1 ; then
+			eval "npm-g_feat_add_$FEAT"
+		else
+			npm-g_feat_add "$FEAT"
+		fi
+	fi
+}