#!/bin/bash
# Linter installation: command probes, Arch/AUR detection, and the pacman /
# AUR-helper dispatch for shellcheck, shfmt, checkbashisms and bashate.
#
# Sourced by shell_check.sh; split out to keep it under the 250-line cap.
# Sourced rather than run, so it inherits the caller's options and reads
# SKIP_INSTALL and VERBOSE, which the entry sets from its arguments above the
# source line.

is_cmd() { command -v "$1" >/dev/null 2>&1; }

is_arch() { is_cmd pacman; }
have_aur_helper() { is_cmd yay || is_cmd paru; }

install_if_missing() {
	local pkg cmd
	pkg="$1"
	cmd="$2"
	if is_cmd "$cmd"; then
		[[ $VERBOSE == "true" ]] && log_info "Found $cmd"
		return 0
	fi

	if [[ $SKIP_INSTALL == "true" ]]; then
		log_warn "Skipping install of $pkg ($cmd not found)"
		return 1
	fi

	if is_arch; then
		log_info "Installing $pkg via pacman..."
		if ! sudo pacman -S --needed --noconfirm "$pkg"; then
			log_warn "Failed to install $pkg via pacman."
			return 1
		fi
		return 0
	else
		log_warn "Non-Arch system detected. Please install '$pkg' manually."
		return 1
	fi
}

install_linters() {
	local ok=0

	# Core linters
	install_if_missing shellcheck shellcheck || ok=1
	install_if_missing shfmt shfmt || ok=1

	# Optional linters (best-effort)
	# checkbashisms may be in repos or AUR; try pacman first, then AUR helper
	if ! is_cmd checkbashisms; then
		if is_arch; then
			if ! sudo pacman -S --needed --noconfirm checkbashisms 2>/dev/null; then
				if have_aur_helper; then
					log_info "Installing checkbashisms from AUR (requires yay/paru)..."
					if is_cmd yay; then yay -S --noconfirm checkbashisms || true; fi
					if is_cmd paru; then paru -S --noconfirm checkbashisms || true; fi
				else
					log_warn "checkbashisms not installed (no AUR helper)."
				fi
			fi
		fi
	fi

	# bashate (python-based), typically available as python-bashate in AUR
	if ! is_cmd bashate; then
		if is_arch && have_aur_helper; then
			log_info "Installing bashate from AUR (requires yay/paru)..."
			if is_cmd yay; then yay -S --noconfirm python-bashate || true; fi
			if is_cmd paru; then paru -S --noconfirm python-bashate || true; fi
		else
			# Try pip if user has it and wants to
			if is_cmd pipx; then
				log_info "Installing bashate via pipx..."
				pipx install bashate || true
			elif is_cmd pip3; then
				log_info "Installing bashate via pip (user)..."
				pip3 install --user bashate || true
			else
				log_warn "bashate not installed (no AUR helper or pip available)."
			fi
		fi
	fi

	return "$ok"
}