From 6c379fe0a506e4405e3e8d5f3dda4c94cbcd8496 Mon Sep 17 00:00:00 2001
From: Galen Guyer <galen@galenguyer.com>
Date: Fri, 5 Aug 2022 12:06:31 -0400
Subject: Install packages, preinstall and install methods, locations

---
 dots                    | 49 ++++++++++++++++++++++++++++++++++++++++++++++++-
 lib/packages.sh         | 10 ++++++++++
 modules/test/install.sh | 11 +++++++++++
 3 files changed, 69 insertions(+), 1 deletion(-)
 create mode 100644 lib/packages.sh
 create mode 100644 modules/test/install.sh

diff --git a/dots b/dots
index 4e24674..3c1807b 100755
--- a/dots
+++ b/dots
@@ -1,5 +1,14 @@
 #!/usr/bin/env bash
-source lib/*
+# load our paths first
+_BASE="$(realpath $0)"
+_BASENAME="$(basename $_BASE)"
+_BASEDIR="$(dirname $_BASE)"
+
+# enter our host directory so we know where everything is
+cd "$_BASEDIR"
+
+# source all library files
+for lib in lib/*; do source $lib; done
 
 function intro() {
 cat <<EOF
@@ -13,6 +22,44 @@ EOF
 function main() {
 	intro
 	echo "Running as $(id -un) on $(os::distro)"
+
+	MODULES=modules/**/install.sh
+
+	# perform preinstall tasks
+	REQUIRED_PACKAGES=()
+	for module in $MODULES; do
+		# make sure we're not using something from previous runs
+		unset -f preinstall
+
+		# load the module
+		source $module
+
+		# if we have a newly defined preinstall function, enter the module directory and run it
+		if [[ "$(type -t preinstall)" == "function" ]]; then
+			cd "$_scriptdir"
+			preinstall
+			cd "$_BASEDIR"
+		fi
+	done
+
+	# install any requested packages
+	[[ ${#REQUIRED_PACKAGES[@]} -gt 0 ]] && packages::install ${REQUIRED_PACKAGES[@]}
+
+	# perform installation tasks
+	for module in $MODULES; do
+		# make sure we're not using something from previous runs
+		unset -f install
+
+		# load the module
+		source $module
+
+		# if we have a newly defined install function, enter the module directory and run it
+		if [[ "$(type -t install)" == "function" ]]; then
+			cd "$_scriptdir"
+			install
+			cd "$_BASEDIR"
+		fi
+	done
 }
 
 main $@
diff --git a/lib/packages.sh b/lib/packages.sh
new file mode 100644
index 0000000..05fac0a
--- /dev/null
+++ b/lib/packages.sh
@@ -0,0 +1,10 @@
+function packages::install() {
+	case "$(os::distro)" in
+		"archlinux")
+			sudo pacman -S --needed $@
+			;;
+		*)
+			echo "Unknown distro, cannot install packages"
+			;;
+	esac
+}
diff --git a/modules/test/install.sh b/modules/test/install.sh
new file mode 100644
index 0000000..2adaf16
--- /dev/null
+++ b/modules/test/install.sh
@@ -0,0 +1,11 @@
+_script="$(realpath ${BASH_SOURCE[0]})"
+_scriptname="$(basename $_script)"
+_scriptdir="$(dirname $_script)"
+_modulename="$(basename $_scriptdir)"
+
+#function preinstall() {
+#}
+
+function install() {
+	echo "module name: $_modulename"
+}
-- 
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