# Fabfile to:
#    - update the remote system(s)
#    - download and install an application


from fabric.api import *

env.hosts = [
    'IP ADDRESS HERE!',
  # 'ip.add.rr.ess
  # 'server2.domain.tld',
]

# Set the username
env.user   = "root"

# Set the password [NOT RECOMMENDED]
env.password = "passwd"

def install_ubuntu_packages():
	"""
	Install mosquitto, redis, and postgres
	"""

	run("apt-get update")
	run("apt-get upgrade")

	run("apt-get install mosquitto")
	run("apt-get install redis-server")
	run("apt-get install postgresql")


def add_system_users():
	"""
	Add system users for all the server functions
	"""

	run("useradd -M -r -s /bin/false gatewaybridge")
	run("useradd -M -r -s /bin/false loraserver")
	run("useradd -M -r -s /bin/false appserver")



def create_database_with_user():
	"""
	Add database user as owner to a newly created database
	"""
### Add Postgres Database

# create postgress user with password
# create postgres database with owner
	pass


def download_and_unpack():

	# LoRa Gateway Bridge
	run("wget https://github.com/brocaar/lora-gateway-bridge/releases/download/VERSION/lora_gateway_bridge_VERSION_linux_amd64.tar.gz")
	run("tar zxf lora_gateway_bridge_VERSION_linux_amd64.tar.gz")
	run("mkdir -p /opt/lora-gateway-bridge/bin")
	run("mv loraserver /opt/lora-gateway-bridge/bin")

	# LoRa Network Server
	run("wget https://github.com/brocaar/loraserver/releases/download/VERSION/loraserver_VERSION_linux_amd64.tar.gz")
	run("tar zxf loraserver_VERSION_linux_amd64.tar.gz")
	run("mkdir -p /opt/loraserver/bin")
	run("mv loraserver /opt/loraserver/bin")

	# LoRa App Server
	run("wget https://github.com/brocaar/lora-app-server/releases/download/VERSION/lora_app_server_VERSION_linux_amd64.tar.gz")
	run("tar zxf lora_app_server_VERSION_linux_amd64.tar.gz")
	run("mkdir -p /opt/lora-app-server/bin")
	run("mv lora-app-server /opt/lora-app-server/bin")



def create_self_signed_certificate():
### TLS self signed certificate
	pass


def system_daemon_setup():

	"""
	[Unit]
	Description=lora-gateway-bridge
	After=mosquitto.service

	[Service]
	User=gatewaybridge
	Group=gatewaybridge
	ExecStart=/opt/lora-gateway-bridge/bin/lora-gateway-bridge
	Restart=on-failure

	[Install]
	WantedBy=multi-user.target
	"""

	("/etc/systemd/system/lora-gateway-bridge.service")

	"""
	[Unit]
	Description=loraserver
	After=mosquitto.service

	[Service]
	User=loraserver
	Group=loraserver
	ExecStart=/opt/loraserver/bin/loraserver
	Restart=on-failure

	[Install]
	WantedBy=multi-user.target
	"""
	("/etc/systemd/system/loraserver.service")

	"""
	[Unit]
	Description=lora-app-server
	After=mosquitto.service postgresql.service

	[Service]
	User=appserver
	Group=appserver
	ExecStart=/opt/lora-app-server/bin/lora-app-server
	Restart=on-failure

	[Install]
	WantedBy=multi-user.target
	"""
	("/etc/systemd/system/lora-app-server.service")

def service_config_file():

	run("mkdir /etc/systemd/system/lora-gateway-bridge.service.d")

	"""
	[Service]
	Environment="SETTING_A=value_a"
	Environment="SETTING_B=value_b"
	"""

	run("mkdir /etc/systemd/system/loraserver.service.d")

	"""
	[Service]
	Environment="NET_ID=010203"
	Environment="BAND=EU_863_870"
	Environment="BIND=127.0.0.1:8000"
	Environment="REDIS_URL=redis://localhost:6379"
	Environment="GW_MQTT_SERVER=tcp://localhost:1883"
	Environment="AS_SERVER=127.0.0.1:8001"
	"""

	run("mkdir /etc/systemd/system/lora-app-server.service.d")

	"""
	[Service]
	Environment="BIND=127.0.0.1:8001"
	Environment="HTTP_BIND=0.0.0.0:8080"
	Environment="NS_SERVER=127.0.0.1:8000"
	Environment="HTTP_TLS_CERT=/opt/lora-app-server/certs/http.pem"
	Environment="HTTP_TLS_KEY=/opt/lora-app-server/certs/http-key.pem"
	Environment="DB_AUTOMIGRATE=True"
	Environment="MIGRATE_NODE_SESSIONS=True"
	Environment="REDIS_URL=redis://localhost:6379"
	Environment="POSTGRES_DSN=postgres://loraserver:dbpassword@localhost/loraserver?sslmode=disable"
	"""


def restart_all_service():

	run("systemctl daemon-reload")

	run("systemctl restart lora-gateway-bridge")
	run("systemctl restart loraserver")
	run("systemctl restart lora-app-server")



### Service log check

# For Gateway
# For Lora Server
# For Lora App Serv