"""Websocket commands for the Backup integration."""

from typing import Any

import voluptuous as vol

from homeassistant.components import websocket_api
from homeassistant.core import HomeAssistant, callback

from .config import ScheduleState
from .const import DATA_MANAGER, LOGGER
from .manager import ManagerStateEvent
from .models import Folder


@callback
def async_register_websocket_handlers(hass: HomeAssistant, with_hassio: bool) -> None:
    """Register websocket commands."""
    websocket_api.async_register_command(hass, backup_agents_info)

    if with_hassio:
        websocket_api.async_register_command(hass, handle_backup_end)
        websocket_api.async_register_command(hass, handle_backup_start)

    websocket_api.async_register_command(hass, handle_details)
    websocket_api.async_register_command(hass, handle_info)
    websocket_api.async_register_command(hass, handle_create)
    websocket_api.async_register_command(hass, handle_create_with_automatic_settings)
    websocket_api.async_register_command(hass, handle_delete)
    websocket_api.async_register_command(hass, handle_restore)
    websocket_api.async_register_command(hass, handle_subscribe_events)

    websocket_api.async_register_command(hass, handle_config_info)
    websocket_api.async_register_command(hass, handle_config_update)


@websocket_api.require_admin
@websocket_api.websocket_command({vol.Required("type"): "backup/info"})
@websocket_api.async_response
async def handle_info(
    hass: HomeAssistant,
    connection: websocket_api.ActiveConnection,
    msg: dict[str, Any],
) -> None:
    """List all stored backups."""
    manager = hass.data[DATA_MANAGER]
    backups, agent_errors = await manager.async_get_backups()
    connection.send_result(
        msg["id"],
        {
            "agent_errors": {
                agent_id: str(err) for agent_id, err in agent_errors.items()
            },
            "backups": [backup.as_frontend_json() for backup in backups.values()],
            "last_attempted_automatic_backup": manager.config.data.last_attempted_automatic_backup,
            "last_completed_automatic_backup": manager.config.data.last_completed_automatic_backup,
        },
    )


@websocket_api.require_admin
@websocket_api.websocket_command(
    {
        vol.Required("type"): "backup/details",
        vol.Required("backup_id"): str,
    }
)
@websocket_api.async_response
async def handle_details(
    hass: HomeAssistant,
    connection: websocket_api.ActiveConnection,
    msg: dict[str, Any],
) -> None:
    """Get backup details for a specific backup."""
    backup, agent_errors = await hass.data[DATA_MANAGER].async_get_backup(
        msg["backup_id"]
    )
    connection.send_result(
        msg["id"],
        {
            "agent_errors": {
                agent_id: str(err) for agent_id, err in agent_errors.items()
            },
            "backup": backup.as_frontend_json() if backup else None,
        },
    )


@websocket_api.require_admin
@websocket_api.websocket_command(
    {
        vol.Required("type"): "backup/delete",
        vol.Required("backup_id"): str,
    }
)
@websocket_api.async_response
async def handle_delete(
    hass: HomeAssistant,
    connection: websocket_api.ActiveConnection,
    msg: dict[str, Any],
) -> None:
    """Delete a backup."""
    agent_errors = await hass.data[DATA_MANAGER].async_delete_backup(msg["backup_id"])
    connection.send_result(
        msg["id"],
        {
            "agent_errors": {
                agent_id: str(err) for agent_id, err in agent_errors.items()
            }
        },
    )


@websocket_api.require_admin
@websocket_api.websocket_command(
    {
        vol.Required("type"): "backup/restore",
        vol.Required("backup_id"): str,
        vol.Required("agent_id"): str,
        vol.Optional("password"): str,
        vol.Optional("restore_addons"): [str],
        vol.Optional("restore_database", default=True): bool,
        vol.Optional("restore_folders"): [vol.Coerce(Folder)],
        vol.Optional("restore_homeassistant", default=True): bool,
    }
)
@websocket_api.async_response
async def handle_restore(
    hass: HomeAssistant,
    connection: websocket_api.ActiveConnection,
    msg: dict[str, Any],
) -> None:
    """Restore a backup."""
    await hass.data[DATA_MANAGER].async_restore_backup(
        msg["backup_id"],
        agent_id=msg["agent_id"],
        password=msg.get("password"),
        restore_addons=msg.get("restore_addons"),
        restore_database=msg["restore_database"],
        restore_folders=msg.get("restore_folders"),
        restore_homeassistant=msg["restore_homeassistant"],
    )
    connection.send_result(msg["id"])


@websocket_api.require_admin
@websocket_api.websocket_command(
    {
        vol.Required("type"): "backup/generate",
        vol.Required("agent_ids"): [str],
        vol.Optional("include_addons"): [str],
        vol.Optional("include_all_addons", default=False): bool,
        vol.Optional("include_database", default=True): bool,
        vol.Optional("include_folders"): [vol.Coerce(Folder)],
        vol.Optional("include_homeassistant", default=True): bool,
        vol.Optional("name"): str,
        vol.Optional("password"): str,
    }
)
@websocket_api.async_response
async def handle_create(
    hass: HomeAssistant,
    connection: websocket_api.ActiveConnection,
    msg: dict[str, Any],
) -> None:
    """Generate a backup."""

    backup = await hass.data[DATA_MANAGER].async_initiate_backup(
        agent_ids=msg["agent_ids"],
        include_addons=msg.get("include_addons"),
        include_all_addons=msg["include_all_addons"],
        include_database=msg["include_database"],
        include_folders=msg.get("include_folders"),
        include_homeassistant=msg["include_homeassistant"],
        name=msg.get("name"),
        password=msg.get("password"),
    )
    connection.send_result(msg["id"], backup)


@websocket_api.require_admin
@websocket_api.websocket_command(
    {
        vol.Required("type"): "backup/generate_with_automatic_settings",
    }
)
@websocket_api.async_response
async def handle_create_with_automatic_settings(
    hass: HomeAssistant,
    connection: websocket_api.ActiveConnection,
    msg: dict[str, Any],
) -> None:
    """Generate a backup with stored settings."""

    config_data = hass.data[DATA_MANAGER].config.data
    backup = await hass.data[DATA_MANAGER].async_initiate_backup(
        agent_ids=config_data.create_backup.agent_ids,
        include_addons=config_data.create_backup.include_addons,
        include_all_addons=config_data.create_backup.include_all_addons,
        include_database=config_data.create_backup.include_database,
        include_folders=config_data.create_backup.include_folders,
        include_homeassistant=True,  # always include HA
        name=config_data.create_backup.name,
        password=config_data.create_backup.password,
        with_automatic_settings=True,
    )
    connection.send_result(msg["id"], backup)


@websocket_api.ws_require_user(only_supervisor=True)
@websocket_api.websocket_command({vol.Required("type"): "backup/start"})
@websocket_api.async_response
async def handle_backup_start(
    hass: HomeAssistant,
    connection: websocket_api.ActiveConnection,
    msg: dict[str, Any],
) -> None:
    """Backup start notification."""
    manager = hass.data[DATA_MANAGER]
    LOGGER.debug("Backup start notification")

    try:
        await manager.async_pre_backup_actions()
    except Exception as err:  # noqa: BLE001
        connection.send_error(msg["id"], "pre_backup_actions_failed", str(err))
        return

    connection.send_result(msg["id"])


@websocket_api.ws_require_user(only_supervisor=True)
@websocket_api.websocket_command({vol.Required("type"): "backup/end"})
@websocket_api.async_response
async def handle_backup_end(
    hass: HomeAssistant,
    connection: websocket_api.ActiveConnection,
    msg: dict[str, Any],
) -> None:
    """Backup end notification."""
    manager = hass.data[DATA_MANAGER]
    LOGGER.debug("Backup end notification")

    try:
        await manager.async_post_backup_actions()
    except Exception as err:  # noqa: BLE001
        connection.send_error(msg["id"], "post_backup_actions_failed", str(err))
        return

    connection.send_result(msg["id"])


@websocket_api.require_admin
@websocket_api.websocket_command({vol.Required("type"): "backup/agents/info"})
@websocket_api.async_response
async def backup_agents_info(
    hass: HomeAssistant,
    connection: websocket_api.ActiveConnection,
    msg: dict[str, Any],
) -> None:
    """Return backup agents info."""
    manager = hass.data[DATA_MANAGER]
    connection.send_result(
        msg["id"],
        {
            "agents": [{"agent_id": agent_id} for agent_id in manager.backup_agents],
        },
    )


@websocket_api.require_admin
@websocket_api.websocket_command({vol.Required("type"): "backup/config/info"})
@websocket_api.async_response
async def handle_config_info(
    hass: HomeAssistant,
    connection: websocket_api.ActiveConnection,
    msg: dict[str, Any],
) -> None:
    """Send the stored backup config."""
    manager = hass.data[DATA_MANAGER]
    connection.send_result(
        msg["id"],
        {
            "config": manager.config.data.to_dict(),
        },
    )


@websocket_api.require_admin
@websocket_api.websocket_command(
    {
        vol.Required("type"): "backup/config/update",
        vol.Optional("create_backup"): vol.Schema(
            {
                vol.Optional("agent_ids"): vol.All(list[str]),
                vol.Optional("include_addons"): vol.Any(list[str], None),
                vol.Optional("include_all_addons"): bool,
                vol.Optional("include_database"): bool,
                vol.Optional("include_folders"): vol.Any([vol.Coerce(Folder)], None),
                vol.Optional("name"): vol.Any(str, None),
                vol.Optional("password"): vol.Any(str, None),
            },
        ),
        vol.Optional("retention"): vol.Schema(
            {
                vol.Optional("copies"): vol.Any(int, None),
                vol.Optional("days"): vol.Any(int, None),
            },
        ),
        vol.Optional("schedule"): vol.All(str, vol.Coerce(ScheduleState)),
    }
)
@websocket_api.async_response
async def handle_config_update(
    hass: HomeAssistant,
    connection: websocket_api.ActiveConnection,
    msg: dict[str, Any],
) -> None:
    """Update the stored backup config."""
    manager = hass.data[DATA_MANAGER]
    changes = dict(msg)
    changes.pop("id")
    changes.pop("type")
    await manager.config.update(**changes)
    connection.send_result(msg["id"])


@websocket_api.require_admin
@websocket_api.websocket_command({vol.Required("type"): "backup/subscribe_events"})
@websocket_api.async_response
async def handle_subscribe_events(
    hass: HomeAssistant,
    connection: websocket_api.ActiveConnection,
    msg: dict[str, Any],
) -> None:
    """Subscribe to backup events."""

    def on_event(event: ManagerStateEvent) -> None:
        connection.send_message(websocket_api.event_message(msg["id"], event))

    manager = hass.data[DATA_MANAGER]
    on_event(manager.last_event)
    connection.subscriptions[msg["id"]] = manager.async_subscribe_events(on_event)
    connection.send_result(msg["id"])