add `fund_user` sndev command (#1214)

* add `fund_user` sndev command

* update help and set msats rather than add

---------

Co-authored-by: keyan <keyan.kousha+huumn@gmail.com>

sndev

@@ -219,6 +219,43 @@ USAGE
   echo "$help"
 }
 
+sndev__fund_user() {
+  shift
+  if [ -z "$1" ]; then
+    echo "<nym> argument required"
+    sndev__help_fund_user
+    exit 1
+  fi
+  if [ -z "$2" ]; then
+    echo "<msats> argument required"
+    sndev__help_fund_user
+    exit 2
+  fi
+  re='^[0-9]+$'
+  if ! [[ $2 =~ $re ]]; then
+   echo "<msats> is not a positive integer"
+   sndev__help_fund_user
+   exit 3
+  fi
+  docker__exec db psql -U sn -d stackernews -q <<EOF
+    UPDATE users set msats = $2 where name = '$1';
+EOF
+}
+
+sndev__help_fund_user() {
+  help="
+fund a nym without using an LN invoice (local only)
+
+USAGE
+  $ sndev fund_user <nym> <msats>
+
+  <nym> - the name of the user you want to fund
+  <msats> - the amount of millisatoshis to set the account to. Must be >= 0
+"
+
+  echo "$help"
+}
+
 sndev__fund() {
   shift
   docker__stacker_lnd -t payinvoice "$@"
@@ -516,6 +553,7 @@ COMMANDS
 
   sn:
     login         login as a nym
+    fund_user     fund a nym without using an LN invoice
 
   lnd:
     fund          pay a bolt11 for funding