"""t14: the adb_command ACTION is selectable — the contract HA reads.

The user's report was that the Shield could not be selected for the
``nvidia_shield.adb_command`` action, so he ran his diagnostics through the
deprecated ``androidtv`` integration instead. The cause was measured against the
installed Home Assistant (2026.10.1), not guessed:

* ``ServiceRegistry.async_register`` takes no ``target`` — a target CANNOT be
  declared at registration;
* the frontend's target picker comes from the service DESCRIPTION, which HA builds
  from ``services.yaml`` or from ``homeassistant.helpers.service.async_set_service_schema``,
  and the runtime description WINS;
* therefore THIS integration must publish a description carrying
  ``target: {entity: [{domain: media_player}]}`` — that is the picker.

This file pins the published contract itself, without any HA installed: the
description, and the copy in BOTH translation files. The registration and the
resolution are exercised in ``test_command_routing.py::TestAdbCommandService``
(stubs) and in ``tests/test_adb_command_real_ha.py`` (real HA).
"""

from __future__ import annotations

import json
from pathlib import Path

import pytest

_ROOT = Path(__file__).resolve().parent.parent
_SHIELD = _ROOT / "custom_components" / "nvidia_shield"


@pytest.fixture(name="const")
def const_fixture():
    """The integration's const module, loaded by path like every other test."""
    import sys

    import conftest

    if "nsh.const" not in sys.modules:
        conftest._load_module("nsh.const", conftest._SHIELD_DIR / "const.py")
    return sys.modules["nsh.const"]


def _strings(name: str) -> dict:
    return json.loads((_SHIELD / name).read_text(encoding="utf-8"))


class TestThePublishedTarget:
    """What HA is told the action accepts."""

    def test_the_target_is_the_shields_media_player_entity(self, const):
        assert const.ADB_COMMAND_SERVICE_TARGET == {
            "entity": [{"domain": const.ADB_COMMAND_TARGET_DOMAIN}]
        }
        assert const.ADB_COMMAND_TARGET_DOMAIN == "media_player"

    def test_the_description_carries_the_target_and_the_two_fields(self, const):
        description = const.ADB_COMMAND_SERVICE_DESCRIPTION

        # the picker: without this key the UI offers no Shield at all
        assert description["target"] is const.ADB_COMMAND_SERVICE_TARGET
        assert set(description["fields"]) == {"command", "entity_id"}
        assert description["fields"]["command"]["required"] is True
        # a plain (non-required) field: the TARGET is what selects the Shield, and
        # an entity_id given anyway still has to point at a participant
        assert "required" not in description["fields"]["entity_id"]

    def test_the_response_key_is_the_one_the_old_integration_returned(self, const):
        # the user's captures read `adb_response`; keeping the name means a template
        # written against `androidtv.adb_command` keeps working
        assert const.ADB_COMMAND_RESPONSE_KEY == "adb_response"


class TestTheCopyMatchesBothTranslationFiles:
    """The description's prose is duplicated in the translations — so it cannot drift.

    ``strings.json``/``translations/en.json`` are where HA's translations live and
    the description is what the frontend receives; the two copies must stay
    identical, and every raised translation_key needs copy in BOTH files or the user
    sees a bare key (t29's lesson, applied to t14's two new keys).
    """

    @pytest.mark.parametrize("name", ["strings.json", "translations/en.json"])
    def test_the_service_copy_matches_the_description(self, const, name):
        service = _strings(name)["services"]["adb_command"]
        description = const.ADB_COMMAND_SERVICE_DESCRIPTION

        assert service["name"] == description["name"]
        assert service["description"] == description["description"]
        for field, copy in description["fields"].items():
            assert service["fields"][field]["name"] == copy["name"]
            assert service["fields"][field]["description"] == copy["description"]

    @pytest.mark.parametrize("name", ["strings.json", "translations/en.json"])
    def test_the_new_exception_keys_have_copy(self, const, name):
        exceptions = _strings(name)["exceptions"]

        for key in ("no_target", "ambiguous_target", "unsupported_target"):
            assert exceptions[key]["title"], (name, key)
            assert exceptions[key]["message"], (name, key)

        # the placeholders the handler fills in are the ones the copy names
        assert "{entity_id}" in exceptions["ambiguous_target"]["message"]
        assert "{entity_id}" in exceptions["unsupported_target"]["message"]
        assert "{service}" in exceptions["no_target"]["message"]

    def test_both_files_are_identical(self):
        # they are two copies of the same English copy — a divergence would mean one
        # of them is dead weight
        assert (_SHIELD / "strings.json").read_text(
            encoding="utf-8"
        ) == (_SHIELD / "translations" / "en.json").read_text(encoding="utf-8")

    def test_the_entity_field_copy_names_the_picker(self):
        # the field the YAML caller passes has to say what to pass, now that the
        # picker is the primary way in
        for name in ("strings.json", "translations/en.json"):
            copy = _strings(name)["services"]["adb_command"]["fields"]["entity_id"]
            assert "media_player" in copy["description"]
            assert "device_id" in copy["description"]