325 lines
6.1 KiB
Bash
325 lines
6.1 KiB
Bash
#!/usr/bin/env bash
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#==============================#
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# Global #
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#==============================#
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DEBUG=${DEBUG:-"false"}
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#==============================#
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# Injected #
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#==============================#
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hosts="@hosts@"
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help_root="@help@"
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#==============================#
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# Logging #
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#==============================#
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text_reset="\e[m"
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text_bold="\e[1m"
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text_dim="\e[2m"
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text_italic="\e[3m"
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text_underline="\e[4m"
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text_blink="\e[5m"
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text_highlight="\e[7m"
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text_hidden="\e[8m"
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text_strike="\e[9m"
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text_fg_red="\e[38;5;1m"
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text_fg_green="\e[38;5;2m"
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text_fg_yellow="\e[38;5;3m"
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text_fg_blue="\e[38;5;4m"
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text_fg_magenta="\e[38;5;5m"
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text_fg_cyan="\e[38;5;6m"
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text_fg_white="\e[38;5;7m"
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text_fg_dim="\e[38;5;8m"
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text_bg_red="\e[48;5;1m"
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text_bg_green="\e[48;5;2m"
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text_bg_yellow="\e[48;5;3m"
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text_bg_blue="\e[48;5;4m"
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text_bg_magenta="\e[48;5;5m"
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text_bg_cyan="\e[48;5;6m"
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text_bg_white="\e[48;5;7m"
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text_bg_dim="\e[48;5;8m"
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# Usage: log_info <message>
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log_info() {
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echo -e "${text_fg_blue}info${text_reset} $1"
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}
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# Usage: log_todo <message>
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log_todo() {
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echo -e "${text_bg_magenta}${text_fg_white}todo${text_reset} $1"
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}
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# Usage: log_debug <message>
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log_debug() {
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if [[ $DEBUG == true ]]; then
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echo -e "${text_fg_dim}debug${text_reset} $1"
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fi
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}
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# Usage: log_warn <message>
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log_warn() {
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echo -e "${text_fg_yellow}warn${text_reset} $1"
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}
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# Usage: log_error <message>
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log_error() {
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echo -e "${text_fg_red}error${text_reset} $1"
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}
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# Usage: log_fatal <message> [exit-code]
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log_fatal() {
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echo -e "${text_fg_white}${text_bg_red}fatal${text_reset} $1"
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if [ -z ${2:-} ]; then
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exit 1
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else
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exit $2
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fi
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}
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# Usage: clear_previous_line [number]
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clear_line() {
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echo -e "\e[${1:-"1"}A\e[2K"
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}
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# Usage:
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# rewrite_line <message>
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# rewrite_line <number> <message>
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rewrite_line() {
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if [[ $# == 1 ]]; then
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echo -e "\e[1A\e[2K${1}"
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else
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echo -e "\e[${1}A\e[2K${2}"
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fi
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}
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#==============================#
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# Options #
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#==============================#
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positional_args=()
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opt_help=false
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opt_pick=false
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opt_list=false
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# Usage: missing_value <option>
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missing_opt_value() {
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log_fatal "Option $1 requires a value"
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}
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# shellcheck disable=SC2154
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while [[ $# > 0 ]]; do
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case "$1" in
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-h|--help)
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opt_help=true
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shift
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;;
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-p|--pick)
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opt_pick=true
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shift
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;;
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-l|--list)
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opt_list=true
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shift
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;;
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--show-trace)
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opt_show_trace=true
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shift
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;;
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--debug)
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DEBUG=true
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shift
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;;
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--)
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shift
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break
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;;
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-*|--*)
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echo "Unknown option $1"
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exit 1
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;;
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*)
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positional_args+=("$1")
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shift
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;;
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esac
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done
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passthrough_args=($@)
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show_trace=""
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#==============================#
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# Helpers #
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#==============================#
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# Usage: split <string> <delimiter>
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split() {
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IFS=$'\n' read -d "" -ra arr <<< "${1//$2/$'\n'}"
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printf '%s\n' "${arr[@]}"
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}
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# Usage: lstrip <string> <pattern>
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lstrip() {
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printf '%s\n' "${1##$2}"
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}
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# Usage: show_help <path>
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show_help() {
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log_debug "Showing help: ${text_bold}$1${text_reset}"
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source "${help_root}/$1.sh"
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}
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# Usage: require_flake_nix
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require_flake_nix() {
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if ! [ -f ./flake.nix ]; then
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log_fatal "This command requires a flake.nix file, but one was not found in the current directory."
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fi
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}
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# Usage: get_flake_attributes <output> <flake-uri>
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get_flake_attributes() {
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local outputs=""
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# NOTE: Some flakes may not contain the values we're looking for. In
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# which case, we swallow errors here to keep the output clean.
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set +e
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outputs=$(nix eval --impure --raw --expr "\
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let
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flake = builtins.getFlake \"$2\";
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outputs =
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if builtins.elem \"$1\" [ \"packages\" \"devShells\" \"apps\" ] then
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builtins.attrNames (flake.\"$1\".\${builtins.currentSystem} or {})
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else
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builtins.attrNames (flake.\"$1\" or {});
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names = builtins.map (output: \"$2#\" + output) outputs;
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in
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builtins.concatStringsSep \" \" names
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" 2>/dev/null)
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set -e
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echo "$outputs"
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}
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# Usage: replace_each <pattern> <text> <data>
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replace_each() {
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local results=()
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for item in $3; do
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if [[ "$item" == $1* ]]; then
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results+=("$2$(lstrip $item $1)")
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else
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results+=("$item")
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fi
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done
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echo "${results[*]}"
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}
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# Usage: prefix_each <prefix> <data>
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prefix_each() {
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local results=()
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for item in $2; do
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results+=("$1 $item")
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done
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echo "${results[*]}"
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}
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# Usage: join_by <delimiter> <data> <data> [...<data>]
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join_by() {
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local d=${1-} f=${2-}
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if shift 2; then
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printf %s "$f" "${@/#/$d}"
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fi
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}
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# Usage: privileged <command>
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privileged() {
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cmd="$@"
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if command -v sudo >/dev/null; then
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log_debug "sudo $cmd"
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sudo $cmd
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elif command -v doas >/dev/null; then
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log_debug "doas $cmd"
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doas $cmd
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else
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log_warn "Could not find ${text_bold}sudo${text_reset} or ${text_bold}doas${text_reset}. Executing without privileges."
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log_debug "$cmd"
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eval "$cmd"
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fi
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}
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#==============================#
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# Commands #
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#==============================#
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nixos_hosts_all() {
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if [[ $opt_help == true ]]; then
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show_help nixos-hosts
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exit 0
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fi
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if [[ -z "${hosts}" ]]; then
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log_error "To use this program, override it with your nixosConfigurations:"
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log_error ""
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log_error " nixos-hosts.override {"
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log_error " inherit (self) nixosConfigurations;"
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log_error " }"
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log_error ""
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log_fatal "No hosts configured."
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fi
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if [ "${opt_list}" == "true" ]; then
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local csv=$(cat "${hosts}")
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local csv_data=$(echo -n "$csv" | tail +2)
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while read -r line; do
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local name=$(split "${line}" "," | head -n 1)
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echo "${name}"
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done <<< "${csv_data}"
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exit 0
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fi
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host=$(gum table --selected.foreground="4" --widths=32,20 < "${hosts}")
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if [ -z "${host}" ]; then
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exit 0
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else
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local name=$(split "${host}" "," | head -n 1)
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echo $name
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fi
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}
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#==============================#
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# Execute #
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#==============================#
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if [ -z "${positional_args:-}" ]; then
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if [[ $opt_help == true ]]; then
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show_help "nixos-hosts"
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exit 0
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else
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log_debug "Running subcommand: ${text_bold}nixos_hosts_all${text_reset}"
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nixos_hosts_all
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exit 0
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fi
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fi
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case ${positional_args[0]} in
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*)
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log_fatal "Unknown subcommand: ${text_bold}${positional_args[0]}${text_reset}"
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;;
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esac
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