#!/usr/bin/env bash

playbook_add() {
	local dl_arch
	local dl_baseurl
	local dl_binary
	local dl_version
	local buffer

	# Install seaweedfs
	case "${BASHTARD_PLATFORM[arch]}" in
		x86_64) dl_arch=amd64 ;;
		*) die "NYI" ;;
	esac

	dl_baseurl="https://github.com/seaweedfs/seaweedfs/releases/download"
	dl_binary="$(printf "%s_%s.tar.gz" "${BASHTARD_PLATFORM[os]}" "$dl_arch")"
	dl_version="3.50"

	buffer="$(tmpdir)"

	chgdir "$buffer"

	info "$BASHTARD_PLAYBOOK/add" "Fetching $dl_baseurl/$dl_version/$dl_binary"
	curl -L "$dl_baseurl/$dl_version/$dl_binary" \
		> "$dl_binary"

	tar xzf "$dl_binary"
	mv -v -- "weed" "$(config "fs.bindir")/weed"

	# Create mount.weed symlink
	ln -fsv "$(config "fs.bindir")/weed" "$(config "fs.bindir")/mount.weed"

	# Generate systemd unit file
	case "${BASHTARD_PLATFORM[init]}" in
		systemd)
			cat <<-EOF > "$(config "fs.etcdir")/systemd/system/seaweedfs.service"
			[Unit]
			Description=SeaweedFS
			After=network.target

			[Service]
			Type=simple
			User=root
			Group=root

			ExecStart=$(config "fs.bindir")/weed server -options="$(config "fs.etcdir")/seaweedfs/server.conf"
			WorkingDirectory=/var/lib/seaweedfs
			SyslogIdentifier=seaweedfs

			[Install]
			WantedBy=multi-user.target
			EOF

			systemctl daemon-reload
			;;
		*) die "NYI"
	esac

	# Create directories
	mkdir -pv -- "/var/lib/seaweedfs"
	mkdir -pv -- "$(config "fs.etcdir")/seaweedfs"

	# Perform initial configuration
	playbook_sync

	# Start the service
	svc enable seaweedfs
	svc start seaweedfs
}

playbook_sync() {
	# Generate config file
	file_template "server.conf" \
		"datadir=/var/lib/seaweedfs" \
		"ip=$(config "vpn-tinc.ipv4")" \
		"volume_size=1024" \
		"reserved_space=10GiB" \
		> "$(config "fs.etcdir")/seaweedfs/server.conf"

	[[ "$BASHTARD_ACTION" == "add" ]] && return

	# Reload service
	svc restart seaweedfs
}

playbook_del() {
	# Stop service
	svc stop seaweedfs
	svc disable seaweedfs

	# Remove systemd unit file
	rm -fr -- "$(config "fs.etcdir")/systemd/system/seaweedfs.service"

	# Remove configuration files
	rm -fr -- "$(config "fs.etcdir")/seaweedfs"

	# Remove downloaded binary and symlinks
	rm -fr -- "$(config "fs.bindir")/weed"
	rm -fr -- "$(config "fs.bindir")/mount.weed"
}