"""Constants for the Reticulum integration."""

from __future__ import annotations

from typing import Final

DOMAIN: Final = "reticulum"

# ---------------------------------------------------------------------------
# Configuration keys
# ---------------------------------------------------------------------------
CONF_TARGET_HOST: Final = "target_host"
CONF_TARGET_PORT: Final = "target_port"
CONF_INTERFACE_NAME: Final = "interface_name"
CONF_DISPLAY_NAME: Final = "display_name"

# Options
CONF_ENABLE_ASSIST: Final = "enable_assist"
CONF_ASSIST_AGENT: Final = "assist_agent"
CONF_ASSIST_LANGUAGE: Final = "assist_language"
CONF_ALLOWED_IDENTITIES: Final = "allowed_identities"
CONF_ALLOW_ALL: Final = "allow_all_senders"
CONF_DEFAULT_RECIPIENT: Final = "default_recipient"
CONF_ANNOUNCE_INTERVAL: Final = "announce_interval"
CONF_PROPAGATION_NODE: Final = "propagation_node"
CONF_SYNC_INTERVAL: Final = "sync_interval"
CONF_DELIVERY_METHOD: Final = "delivery_method"
CONF_STAMP_COST: Final = "stamp_cost"
CONF_LOGLEVEL: Final = "loglevel"
CONF_GREETING: Final = "greeting"

# ---------------------------------------------------------------------------
# Defaults
# ---------------------------------------------------------------------------
DEFAULT_INTERFACE_NAME: Final = "HA TCP Client"
DEFAULT_DISPLAY_NAME: Final = "Home Assistant"
DEFAULT_TARGET_PORT: Final = 4242
DEFAULT_ANNOUNCE_INTERVAL: Final = 1800  # seconds; 0 disables periodic announce
DEFAULT_SYNC_INTERVAL: Final = 0  # seconds; 0 disables propagation-node sync
DEFAULT_DELIVERY_METHOD: Final = "direct"
DEFAULT_STAMP_COST: Final = 0
DEFAULT_LOGLEVEL: Final = 3  # RNS.LOG_NOTICE

DELIVERY_METHODS: Final = ["direct", "opportunistic", "propagated"]

# ---------------------------------------------------------------------------
# Subentries
# ---------------------------------------------------------------------------
# The config entry is the shared Reticulum stack (RNS + TCP interface); each
# LXMF identity is a config subentry of this type.
SUBENTRY_TYPE_IDENTITY: Final = "identity"

# ---------------------------------------------------------------------------
# Storage
# ---------------------------------------------------------------------------
STORAGE_SUBDIR: Final = "reticulum"
IDENTITIES_SUBDIR: Final = "identities"
IDENTITY_FILENAME: Final = "identity"
CONFIG_FILENAME: Final = "config"
ATTACHMENTS_SUBDIR: Final = "attachments"

# ---------------------------------------------------------------------------
# Dispatcher signals
# ---------------------------------------------------------------------------
# Per-stack and per-identity update signals; suffix with entry_id / subentry_id.
SIGNAL_STACK_PREFIX: Final = f"{DOMAIN}_stack"
SIGNAL_IDENTITY_PREFIX: Final = f"{DOMAIN}_identity"


def stack_signal(entry_id: str) -> str:
    """Dispatcher signal for a stack (hub) state update."""
    return f"{SIGNAL_STACK_PREFIX}_{entry_id}"


def identity_signal(subentry_id: str) -> str:
    """Dispatcher signal for an identity state update."""
    return f"{SIGNAL_IDENTITY_PREFIX}_{subentry_id}"

# ---------------------------------------------------------------------------
# Events
# ---------------------------------------------------------------------------
EVENT_MESSAGE_RECEIVED: Final = f"{DOMAIN}_message_received"
EVENT_MESSAGE_DELIVERED: Final = f"{DOMAIN}_message_delivered"
EVENT_MESSAGE_FAILED: Final = f"{DOMAIN}_message_failed"
EVENT_ANNOUNCE_RECEIVED: Final = f"{DOMAIN}_announce_received"

# ---------------------------------------------------------------------------
# Services
# ---------------------------------------------------------------------------
SERVICE_SEND_MESSAGE: Final = "send_message"
SERVICE_ANNOUNCE: Final = "announce"
SERVICE_REQUEST_PATH: Final = "request_path"
SERVICE_SYNC_PROPAGATION: Final = "sync_propagation"
SERVICE_SET_PROPAGATION_NODE: Final = "set_propagation_node"

ATTR_DESTINATION: Final = "destination"
ATTR_CONTENT: Final = "content"
ATTR_TITLE: Final = "title"
ATTR_METHOD: Final = "method"
ATTR_FIELDS: Final = "fields"
ATTR_MAX_MESSAGES: Final = "max_messages"
# Which identity a domain service should act through (title or LXMF address).
# Omit to use the only/first identity.
ATTR_IDENTITY: Final = "identity"

# ---------------------------------------------------------------------------
# LXMF address geometry
# ---------------------------------------------------------------------------
# Reticulum truncated destination hashes are 16 bytes -> 32 hex chars.
DEST_HASH_LEN: Final = 32