convert-json.awk

function camel2snake(str) {
  if (match(str, /(.*)([a-z0-9]+)([A-Z]+)(.*)/, cap))
    return camel2snake(cap[1] cap[2] "_" tolower(cap[3]) cap[4]);

  return str;
}

function fixWord(str) {
  if (match(str, /(.*)(SMTP)([A-Z]+)(.*)/, cap))
    return fixWord(cap[1] "Smtp" "_" tolower(cap[3]) cap[4]);

  if (match(str, /(.*)(GitLab)([A-Z]+)(.*)/, cap))
    return fixWord(cap[1] "Gitlab" "_" tolower(cap[3]) cap[4]);

  return str;
}

/^ *"([[:alnum:]]+)Settings": {$/ {
  match($0, /^ *"([[:alnum:]]+)Settings": {$/, s);
  print;
  next;
}

/^ *"([[:alnum:]]+)": +(-?[0-9]+|true|false|[[]]+)?(".*")?(,)?$/ {
  match($0, /^ *"([[:alnum:]]+)": +(-?[0-9]+|true|false|[[]]+)?(".*")?(,)?$/, v);
  envkey = toupper(s[1] "_" camel2snake(fixWord(v[1])));
  if (v[2] == "")
    printf "        \"%s\": \"{{var \"%s\" | default %s}}\"%s\n", v[1], envkey, v[3], v[4];
  else
    printf "        \"%s\": {{var \"%s\" | default \"%s\"}}%s\n", v[1], envkey, v[2], v[4];
  next;
}

{
  print;
}