#!/usr/bin/env bash
# shellcheck disable=SC2034
# Common utilities for miaur

MIAUR_VERSION="0.1.0"

# Colors (respect pacman Color / NO_COLOR / non-tty)
_miaur_color_enabled() {
	[[ -n ${NO_COLOR:-} ]] && return 1
	[[ ! -t 1 ]] && return 1
	if [[ -f /etc/pacman.conf ]] && grep -Eq '^[[:space:]]*Color([[:space:]]|$)' /etc/pacman.conf 2>/dev/null; then
		return 0
	fi
	# Default: enable on tty even if pacman Color is commented
	return 0
}

if _miaur_color_enabled; then
	C_RED=$'\033[31m'
	C_GREEN=$'\033[32m'
	C_YELLOW=$'\033[33m'
	C_BLUE=$'\033[34m'
	C_CYAN=$'\033[36m'
	C_BOLD=$'\033[1m'
	C_DIM=$'\033[2m'
	C_RESET=$'\033[0m'
else
	C_RED= C_GREEN= C_YELLOW= C_BLUE= C_CYAN= C_BOLD= C_DIM= C_RESET=
fi

msg() { printf '%s::%s %s\n' "${C_BOLD}${C_BLUE}" "${C_RESET}" "$*" >&2; }
msg2() { printf '%s ->%s %s\n' "${C_BOLD}${C_BLUE}" "${C_RESET}" "$*" >&2; }
warn() { printf '%s==>%s WARNING: %s\n' "${C_BOLD}${C_YELLOW}" "${C_RESET}" "$*" >&2; }
error() { printf '%s==>%s ERROR: %s\n' "${C_BOLD}${C_RED}" "${C_RESET}" "$*" >&2; }
die() { error "$*"; exit 1; }

need_cmd() {
	local c
	for c in "$@"; do
		command -v "$c" >/dev/null 2>&1 || die "required command not found: $c"
	done
}

# Prefer system curl — some user PATH wrappers break AUR HTTPS
resolve_curl() {
	if [[ -n ${MIAUR_CURL:-} ]]; then
		printf '%s' "$MIAUR_CURL"
	elif [[ -x /usr/bin/curl ]]; then
		printf '%s' /usr/bin/curl
	else
		command -v curl
	fi
}

# Strip version constraints from a dep string: foo>=1.0 -> foo
dep_name() {
	local d=$1
	d=${d%%[><=]*}
	d=${d%%:*}
	printf '%s' "$d"
}

vercmp_safe() {
	# pacman --print returns 0 if equal, 1 if first >, -1 if second >
	/usr/bin/vercmp "$1" "$2"
}

is_pkg_installed() {
	pacman -Q "$1" &>/dev/null
}

pkg_local_version() {
	pacman -Q "$1" 2>/dev/null | awk '{print $2}'
}

# Run command as root via sudo
as_root() {
	if [[ ${EUID:-$(id -u)} -eq 0 ]]; then
		"$@"
	else
		${MIAUR_SUDO:-sudo} ${MIAUR_SUDOFLAGS:-} "$@"
	fi
}

# Keep sudo credentials alive in background
_sudo_loop_pid=
sudoloop_start() {
	[[ ${MIAUR_SUDOLOOP:-0} -eq 1 ]] || return 0
	[[ ${EUID:-$(id -u)} -eq 0 ]] && return 0
	${MIAUR_SUDO:-sudo} -v || return 1
	(
		while true; do
			sleep 60
			${MIAUR_SUDO:-sudo} -v || exit
		done
	) &
	_sudo_loop_pid=$!
}

sudoloop_stop() {
	if [[ -n ${_sudo_loop_pid:-} ]]; then
		kill "$_sudo_loop_pid" 2>/dev/null || true
		wait "$_sudo_loop_pid" 2>/dev/null || true
		_sudo_loop_pid=
	fi
}

trap sudoloop_stop EXIT