"""Project-wide constants for browser-cli.

Only static values live here. Runtime-derived state (e.g. installed version,
open sockets, locks) stays in the owning module.
"""
from __future__ import annotations

import os
from pathlib import Path

APP_NAME = "browser-cli"
PYPI_PACKAGE_NAME = "real-browser-cli"
RUNTIME_DIRNAME = ".browser_cli"
DEFAULT_ALIAS = "default"

NATIVE_HOST_NAME = "com.browsercli.host"
EXTENSION_ID = "bfpmkhngkjnfhabmfckgeohlilokodkg"
WEBSTORE_EXTENSION_ID = "hekaebjhbhhdbmakimmaklbblbmccahp"
FIREFOX_EXTENSION_ID = "browser-cli@yiprawr.dev"
ALLOWED_EXTENSION_IDS = [EXTENSION_ID, WEBSTORE_EXTENSION_ID]
SUPPORTED_BROWSERS = ["chrome", "chromium", "brave", "edge", "vivaldi", "firefox"]

# Public store listings — the default install path now that the extension is
# published. Chromium-family browsers (Brave/Edge/Vivaldi/Chromium) can all
# install from the Chrome Web Store.
CHROME_WEBSTORE_URL = f"https://chromewebstore.google.com/detail/browser-cli/{WEBSTORE_EXTENSION_ID}"
FIREFOX_ADDON_URL = "https://addons.mozilla.org/firefox/addon/browser-cli/"

PROTOCOL_MIN_CLIENT = "0.9.0"
MAX_MSG_BYTES = 32 * 1024 * 1024
DEFAULT_REMOTE_PORT = 443
# Count cap requested per page. The extension fills each page up to this many
# items OR a byte budget (whichever comes first), so large items (e.g. data-URI
# favicons) stay under the 1MB native-messaging limit while small items pack
# into far fewer roundtrips.
DEFAULT_PAGE_SIZE = 1000
# Hard upper bound on total items collected across all pages, and the loop-guard
# page count. Kept independent of page size so byte-budgeted small pages don't
# falsely trip the guard.
MAX_PAGED_ITEMS = 10_000
DEFAULT_TRANSPORT_THRESHOLD = 512
# How long a remote serve connection stays open waiting for the next command on
# an established encrypted session before closing. Lets the client reuse one
# authenticated connection for multiple commands instead of re-handshaking.
REMOTE_SESSION_IDLE_TIMEOUT = 30

NO_ROUTE_COMMANDS = {"browser-cli.targets", "browser-cli.auth.keys", "browser-cli.auth.trust", "browser-cli.auth.policy"}
GENTLE_MODES = ["auto", "normal", "gentle", "ultra"]

PAGEABLE_COMMANDS = {
  "tabs.list",
  "tabs.filter",
  "tabs.query",
  "group.list",
  "group.tabs",
  "group.query",
  "windows.list",
  "dom.query",
  "dom.text",
  "dom.attr",
  "extract.links",
  "extract.images",
  "extract.json",
  "session.list",
}

NATIVE_HOST_DIRS = {
  "chrome": {
    "linux":  [Path.home() / ".config/google-chrome/NativeMessagingHosts"],
    "darwin": [Path.home() / "Library/Application Support/Google/Chrome/NativeMessagingHosts"],
  },
  "chromium": {
    "linux":  [Path.home() / ".config/chromium/NativeMessagingHosts"],
    "darwin": [Path.home() / "Library/Application Support/Chromium/NativeMessagingHosts"],
  },
  "brave": {
    "linux":  [Path.home() / ".config/BraveSoftware/Brave-Browser/NativeMessagingHosts"],
    "darwin": [Path.home() / "Library/Application Support/BraveSoftware/Brave-Browser/NativeMessagingHosts"],
  },
  "edge": {
    "linux":  [Path.home() / ".config/microsoft-edge/NativeMessagingHosts"],
    "darwin": [Path.home() / "Library/Application Support/Microsoft Edge/NativeMessagingHosts"],
  },
  "vivaldi": {
    "linux":  [Path.home() / ".config/vivaldi/NativeMessagingHosts"],
    "darwin": [Path.home() / "Library/Application Support/Vivaldi/NativeMessagingHosts"],
  },
  "firefox": {
    "linux":  [Path.home() / ".mozilla/native-messaging-hosts"],
    "darwin": [Path.home() / "Library/Application Support/Mozilla/NativeMessagingHosts"],
  },
}

WINDOWS_NATIVE_HOST_REGISTRY_KEYS = {
  "chrome": [r"Software\Google\Chrome\NativeMessagingHosts"],
  "chromium": [r"Software\Chromium\NativeMessagingHosts"],
  "brave": [r"Software\BraveSoftware\Brave-Browser\NativeMessagingHosts"],
  "edge": [r"Software\Microsoft\Edge\NativeMessagingHosts"],
  "vivaldi": [r"Software\Vivaldi\NativeMessagingHosts"],
  "firefox": [r"Software\Mozilla\NativeMessagingHosts"],
}

CONFIG_DIR = Path(os.environ.get("XDG_CONFIG_HOME", str(Path.home() / ".config"))) / APP_NAME
DEFAULT_KEY_PATH = CONFIG_DIR / "client.key.pem"
DEFAULT_AUTHORIZED_KEYS_PATH = CONFIG_DIR / "authorized_keys"

SSH_AGENTC_REQUEST_IDENTITIES = 11
SSH_AGENT_IDENTITIES_ANSWER = 12
SSH_AGENTC_SIGN_REQUEST = 13
SSH_AGENT_SIGN_RESPONSE = 14

PQ_KEX_ALG = "ML-KEM-768"
PQ_TRANSPORT_ALG = "ML-KEM-768+ChaCha20Poly1305"

SER_JSON = 0
SER_MSGPACK = 1
COMP_NONE = 0
COMP_ZLIB = 1
COMP_GZIP = 2
COMP_ZSTD = 3