#!/usr/bin/env bash

playbook_add() {
	pkg install curl

	info "$BASHTARD_PLAYBOOK/add" "Writing config.yaml for k3s"
	mkdir -pv -- /etc/rancher/k3s
	{
		cat <<-EOF
		node-name: "${BASHTARD_PLATFORM[fqdn]}"
		node-ip: "$(config "$BASHTARD_PLAYBOOK.internal-ip" "127.0.0.1")"
		bind-address: "$(config "$BASHTARD_PLAYBOOK.bind-address" "0.0.0.0")"
		cluster-cidr: "$(config "$BASHTARD_PLAYBOOK.cluster-cidr" "172.19.0.0/16")"
		service-cidr: "$(config "$BASHTARD_PLAYBOOK.service-cidr" "172.20.0.0/16")"
		cluster-domain: "$(config "$BASHTARD_PLAYBOOK.cluster-domain" "cluster.local")"
		service-node-port-range: "$(config "$BASHTARD_PLAYBOOK.service-node-port-min" "30000")-$(config "$BASHTARD_PLAYBOOK.service-node-port-max" "32767")"
		flannel-ipv6-masq: true
		disable:
		- traefik
		EOF

		if [[ -n "$(config_subkeys "$BASHTARD_PLAYBOOK.flannel.interfaces")" ]]
		then
			printf "flannel-iface:\n"

			while read -r iface
			do
				printf -- "- %s\n" "$(config "$BASHTARD_PLAYBOOK.flannel.interfaces.$iface")"
			done < <( config_subkeys "$BASHTARD_PLAYBOOK.flannel.interfaces" )
		fi

		if [[ -n "$(config "$BASHTARD_PLAYBOOK.external-ip" "")" ]]
		then
			printf "%s: \"%s\"\n" "node-external-ip" "$(config "$BASHTARD_PLAYBOOK.external-ip" "")"
		fi
	} > "$(config "fs.etcdir")/rancher/k3s/config.yaml"

	info "$BASHTARD_PLAYBOOK/add" "Installing k3s"
	curl -sfL https://get.k3s.io | sh -s - server --cluster-init  # I hate this

	notice "$BASHTARD_PLAYBOOK/add" "Creating data directories"
	mkdir -pv -- "$(playbook_path "data")/manifests.d"

	notice "$BASHTARD_PLAYBOOK/add" "Waiting for node to become available"
	{ grep -q -m 1 "${BASHTARD_PLATFORM[fqdn]}[[:space:]]\+Ready"; kill $!; } < <(k3s kubectl get node -w)

	playbook_sync
}

playbook_sync() {
	local data
	local kubeconfig
	local manifest_prefix
	local values

	data="$(playbook_path "data")"
	kubeconfig="$(config "fs.etcdir")/rancher/k3s/k3s.yaml"

	notice "$BASHTARD_PLAYBOOK/sync" "Applying manifests.d"
	kubectl --kubeconfig "$kubeconfig" apply --recursive --filename "$data/manifests.d" || true
}

playbook_del() {
	/usr/local/bin/k3s-uninstall.sh
}