#!/bin/bash
set -euo pipefail

#
# Helper functions
#
declare -i term_width=80

h1() {
    declare border padding text
    border='\e[1;34m'"$(printf '=%.0s' $(seq 1 "$term_width"))"'\e[0m'
    padding="$(printf ' %.0s' $(seq 1 $(((term_width - $(wc -m <<<"$*")) / 2))))"
    text="\\e[1m$*\\e[0m"
    echo -e "$border"
    echo -e "${padding}${text}${padding}"
    echo -e "$border"
}

h2() {
    printf '\e[1;33m==>\e[37;1m %s\e[0m\n' "$*"
}

k9s_version="${1:-v0.24.15}"; shift || true

h1 "Install k9s"
h2 "Version: ${k9s_version}"

# download and install.
wget -qO- "https://github.com/derailed/k9s/releases/download/$k9s_version/k9s_Linux_x86_64.tar.gz" \
  | tar xzf - k9s
install -m 755 k9s /usr/local/bin/
rm k9s

# try it.
k9s version