#!/usr/bin/env bash

playbook_add() {
	pkg install curl

	case "${BASHTARD_PLATFORM[key]}" in
		linux-debian|linux-ubuntu)
			info "$BASHTARD_PLAYBOOK" "Configure package manager repositories"
			curl https://baltocdn.com/helm/signing.asc | gpg --dearmor > /usr/share/keyrings/helm.gpg
			printf "deb [arch=%s signed-by=%s] %s all main\n" \
				"$(dpkg --print-architecture)" \
				"/usr/share/keyrings/helm.gpg" \
				"https://baltocdn.com/helm/stable/debian/" \
				> "/etc/apt/sources.list.d/$BASHTARD_PLAYBOOK.list"
			apt update
			;;
	esac

	info "$BASHTARD_PLAYBOOK" "Installing additional programs"
	pkg install helm

	info "$BASHTARD_PLAYBOOK" "Writing config.yaml for k3s"
	mkdir -pv -- /etc/rancher/k3s
	cat <<-EOF > /etc/rancher/k3s/config.yaml
	node-name: "${BASHTARD_PLATFORM[fqdn]}"
	cluster-cidr: 172.19.0.0/16
	service-cidr: 172.20.0.0/16
	cluster-domain: cluster.local
	EOF

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

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

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

	playbook_sync
}

playbook_sync() {
	local data
	local helm_cmd
	local kubeconfig

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

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

	notice "$BASHTARD_PLAYBOOK/helm" "Ensure all Helm repos exist"
	while read -r repo
	do
		helm repo add "$repo" "$(config "$BASHTARD_PLAYBOOK.helm.repos.$repo.url")"
	done < <(config_subkeys "$BASHTARD_PLAYBOOK.helm.repos")

	notice "$BASHTARD_PLAYBOOK/helm" "Updating Helm repository contents"
	helm repo update

	notice "$BASHTARD_PLAYBOOK/helm" "Upgrading Helm charts"
	while read -r app
	do
		helm_cmd=(
			"helm" "upgrade"
			"--install"
			"--kubeconfig" "$kubeconfig"
			"--timeout" "$(config "$BASHTARD_PLAYBOOK.helm.timeout" "30s")"
			"--namespace" "$(config "$BASHTARD_PLAYBOOK.helm.apps.$app.namespace" "default")"
		)

		# Add values
		helm_cmd+=("--values" "$data/helm.d/$(config "$BASHTARD_PLAYBOOK.helm.apps.$app.values")")

		# Set which chart to upgrade
		helm_cmd+=("$app")
		helm_cmd+=("$(config "$BASHTARD_PLAYBOOK.helm.apps.$app.repo")/$(config "$BASHTARD_PLAYBOOK.helm.apps.$app.chart")")

		notice "$BASHTARD_PLAYBOOK/helm/$app" "> ${helm_cmd[*]}"
		${helm_cmd[@]}

		unset helm_cmd
	done < <(config_subkeys "$BASHTARD_PLAYBOOK.helm.apps")
}

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