Convert string in Shell - shell

Question

I have a following varaible:
tags = {
environment = "development",
provider = "ServiceOne",
ansible_role = "nfs-role",
comment = "mysql"
}
In my pipeline i need to convert it to the following:
tfh pushvars -overwrite-all -dry-run false -hcl-var "tags={environment=\"development\", provider=\"ServiceOne\", ansible_role=\"nfs-rolep\",comment= \"mysql\"}"
I have tried with SED and AWK but couldn't get any result?
This is where i am standing now:
#!/bin/bash
#[[ -z "$2" ]] && echo "==> Usage: ./transform_tfe_vars.sh <<INPUT_FILE>> <<OUTPUT_FILE>>" && exit 1;
vars_file=${1}
#output_file=${2}
tmp_file=".todelete.tmp"
cmd "$vars_file" | grep -v '^#' | awk '!/^$/' > "$tmp_file"
while read -r p; do
a=$(echo "$p" | awk '{print $1}')
b=$(echo "$p" | awk '{print $3}')
echo "tfh pushvars -overwrite-all -dry-run false -shcl-var \"$a=\\""$b""\""
done <$tmp_file

Answer 1

A shell read loop is always the wrong approach for manipulating text, see why-is-using-a-shell-loop-to-process-text-considered-bad-practice. The guys who invented shell also invented awk for shell to call to manipulate text.
It looks like this might be what you're trying to do:
#!/usr/bin/env bash
(( $# == 2 )) || { echo "==> Usage: ${0##*/} <<INPUT_FILE>> <<OUTPUT_FILE>>"; exit 1; }
vars_file="$1"
output_file="$2"
awk '
BEGIN {
ORS = ""
print "tfh pushvars -overwrite-all -dry-run false -hcl-var \""
}
NF && !/^#/ {
gsub(/[[:space:]]/,"")
gsub(/"/,"\\\\&")
print
}
END {
print "\"\n"
}
' "$vars_file" > "$output_file"