"""Class representing Nextcloud service."""
import base64
import subprocess
import typing
from selfprivacy_api.jobs import Jobs
from selfprivacy_api.services.generic_service_mover import FolderMoveNames, move_service
from selfprivacy_api.services.generic_size_counter import get_storage_usage
from selfprivacy_api.services.generic_status_getter import get_service_status
from selfprivacy_api.services.service import Service, ServiceDnsRecord, ServiceStatus
from selfprivacy_api.utils import ReadUserData, WriteUserData
from selfprivacy_api.utils.block_devices import BlockDevice
from selfprivacy_api.utils.network import get_ip4


class Nextcloud(Service):
    """Class representing Nextcloud service."""

    @staticmethod
    def get_id(self) -> str:
        """Return service id."""
        return "nextcloud"

    @staticmethod
    def get_display_name() -> str:
        """Return service display name."""
        return "Nextcloud"

    @staticmethod
    def get_description() -> str:
        """Return service description."""
        return "Nextcloud is a cloud storage service that offers a web interface and a desktop client."

    @staticmethod
    def get_svg_icon() -> str:
        """Read SVG icon from file and return it as base64 encoded string."""
        with open("selfprivacy_api/services/nextcloud/nextcloud.svg", "rb") as f:
            return base64.b64encode(f.read()).decode("utf-8")

    @staticmethod
    def is_movable() -> bool:
        return True

    @staticmethod
    def is_required() -> bool:
        return False

    @staticmethod
    def is_enabled() -> bool:
        with ReadUserData() as user_data:
            return user_data.get("nextcloud", {}).get("enable", False)

    @staticmethod
    def get_status() -> ServiceStatus:
        """
        Return Nextcloud status from systemd.
        Use command return code to determine status.

        Return code 0 means service is running.
        Return code 1 or 2 means service is in error stat.
        Return code 3 means service is stopped.
        Return code 4 means service is off.
        """
        return get_service_status("phpfpm-nextcloud.service")

    @staticmethod
    def enable():
        """Enable Nextcloud service."""
        with WriteUserData() as user_data:
            if "nextcloud" not in user_data:
                user_data["nextcloud"] = {}
            user_data["nextcloud"]["enable"] = True

    @staticmethod
    def disable():
        """Disable Nextcloud service."""
        with WriteUserData() as user_data:
            if "nextcloud" not in user_data:
                user_data["nextcloud"] = {}
            user_data["nextcloud"]["enable"] = False

    @staticmethod
    def stop():
        """Stop Nextcloud service."""
        subprocess.Popen(["systemctl", "stop", "phpfpm-nextcloud.service"])

    @staticmethod
    def start():
        """Start Nextcloud service."""
        subprocess.Popen(["systemctl", "start", "phpfpm-nextcloud.service"])

    @staticmethod
    def restart():
        """Restart Nextcloud service."""
        subprocess.Popen(["systemctl", "restart", "phpfpm-nextcloud.service"])

    @staticmethod
    def get_configuration() -> dict:
        """Return Nextcloud configuration."""
        return {}

    @staticmethod
    def set_configuration(config_items):
        return super().set_configuration(config_items)

    @staticmethod
    def get_logs():
        """Return Nextcloud logs."""
        return ""

    @staticmethod
    def get_storage_usage() -> int:
        """
        Calculate the real storage usage of /var/lib/nextcloud and all subdirectories.
        Calculate using pathlib.
        Do not follow symlinks.
        """
        return get_storage_usage("/var/lib/nextcloud")

    @staticmethod
    def get_location() -> str:
        """Get the name of disk where Nextcloud is installed."""
        with ReadUserData() as user_data:
            if user_data.get("useBinds", False):
                return user_data.get("nextcloud", {}).get("location", "sda1")
            else:
                return "sda1"

    @staticmethod
    def get_dns_records() -> typing.List[ServiceDnsRecord]:
        return [
            ServiceDnsRecord(
                type="A",
                name="cloud",
                content=get_ip4(),
                ttl=3600,
            ),
        ]

    def move_to_volume(self, volume: BlockDevice):
        job = Jobs.get_instance().add(
            name="services.nextcloud.move",
            description=f"Moving Nextcloud to volume {volume.name}",
        )
        move_service(
            self,
            volume,
            job,
            [
                FolderMoveNames(
                    name="nextcloud",
                    bind_location="/var/lib/nextcloud",
                    owner="nextcloud",
                    group="nextcloud",
                ),
            ],
            "nextcloud",
        )
        return job