How to redirect to HTTP non-www to HTTPS www by htaccess

RewriteEngine On
#we replace domain.com/$1 with %{SERVER_NAME}%{REQUEST_URI}.
RewriteCond %{HTTP_HOST} !^www\. [NC]
RewriteRule ^(.*) https://www.%{SERVER_NAME}%{REQUEST_URI} [L,R=301]

#here we dont use www as non www was already redirected to www.
RewriteCond %{HTTPS} off
RewriteRule ^(.*) https://%{SERVER_NAME}%{REQUEST_URI} [L,R=301]

RewriteEngine On

RewriteCond %{HTTP_HOST} !^www\. [NC]
RewriteRule ^(.*)$ http://www.example.com/$1 [L,R=301]

RewriteCond %{HTTPS} off
RewriteRule ^(.*)$ https://www.example.com/$1 [L,R=301]