#! /bin/bash

set -euo pipefail
IFS=$' \t\n'
export LANG=C
SCRIPT_NAME="$(basename "$0")"

trap 'rm -f "$TMP_INV_INI"' EXIT

TMP_INV_INI="$(mktemp --suffix=_"${SCRIPT_NAME%%.*}".ini)"

mk_ini_tmp_inv() {
cat <<-EOF >"$TMP_INV_INI"
[all:vars]
os = linux

[web]
srv-web1 web=1
srv-web2 web=2

[db]
srv-db1 db=1
srv-db2 db=2

[plop]
test-ansible
EOF
}

arg_list() {
        mk_ini_tmp_inv
        ansible-inventory -i "$TMP_INV_INI" --list
}

arg_host() {
        mk_ini_tmp_inv
        ansible-inventory -i "$TMP_INV_INI" --host "$1"
}

usage() {
        ansible-doc -t inventory script
}

while [ "${1-}" != "" ]; do
    case $1 in
        --list )                        shift
                                        arg_list
                                ;;
        --host )                        shift
                                        arg_host "$1"
                                ;;
        -h | --help )                   usage
                                        exit 0
                                ;;
        --)                             # End of all options
                                        shift
                                        break
                                ;;
        -*)                             echo "SCRIPT_NAME: invalid option" >&2
                                        echo "Try '$SCRIPT_NAME --help' for more information." >&2
                                        exit 1
                                ;;
        *)
                                        usage
                                ;;
    esac
    shift
done