"""Plugin-side tests for the browser provider migration (PR #25214).

Covers:

- All three bundled plugins (browserbase, browser-use, firecrawl)
  instantiate and self-report the expected ABC defaults.
- Each plugin's ``is_available()`` correctly reflects env-var presence.
- The browser_registry resolves an active provider in the documented
  scenarios:
    * explicit config wins ignoring availability (so dispatcher surfaces
      a typed credentials error)
    * legacy preference walk: browser-use → browserbase (filtered by
      availability)
    * firecrawl is NOT in the legacy walk — explicit-only
    * unknown name falls through to auto-detect
    * ``local`` short-circuits to None

These tests use *real* imports from the plugin modules — no mocking of
provider classes themselves — so the test catches drift in the ABC
interface, the registry, and the plugin glue layer simultaneously.
Mirrors ``tests/plugins/web/test_web_search_provider_plugins.py`` from
PR #25182.
"""
from __future__ import annotations

import pytest


# ---------------------------------------------------------------------------
# Helpers
# ---------------------------------------------------------------------------


def _clear_browser_env(monkeypatch: pytest.MonkeyPatch) -> None:
    """Strip every browser-provider env var so is_available() returns False."""
    for k in (
        "BROWSERBASE_API_KEY",
        "BROWSERBASE_PROJECT_ID",
        "BROWSERBASE_BASE_URL",
        "BROWSER_USE_API_KEY",
        "BROWSER_USE_GATEWAY_URL",
        "FIRECRAWL_API_KEY",
        "FIRECRAWL_API_URL",
        "FIRECRAWL_BROWSER_TTL",
        "TOOL_GATEWAY_DOMAIN",
        "TOOL_GATEWAY_USER_TOKEN",
    ):
        monkeypatch.delenv(k, raising=False)


def _ensure_plugins_loaded() -> None:
    """Idempotently load plugins so the registry is populated."""
    from hermes_cli.plugins import _ensure_plugins_discovered

    _ensure_plugins_discovered()


# ---------------------------------------------------------------------------
# Per-test isolation
# ---------------------------------------------------------------------------


@pytest.fixture(autouse=True)
def _isolate_env(monkeypatch: pytest.MonkeyPatch) -> None:
    """Each test starts with a clean browser-provider env."""
    _clear_browser_env(monkeypatch)


# ---------------------------------------------------------------------------
# Bundled plugins register
# ---------------------------------------------------------------------------





# ---------------------------------------------------------------------------
# is_available() behavior
# ---------------------------------------------------------------------------


class TestIsAvailable:
    """Each plugin's ``is_available()`` reflects env-var presence accurately."""

    def test_browserbase_requires_both_api_key_and_project_id(
        self, monkeypatch: pytest.MonkeyPatch
    ) -> None:
        _ensure_plugins_loaded()
        from agent.browser_registry import get_provider

        p = get_provider("browserbase")
        assert p is not None
        assert p.is_available() is False

        # API key alone is insufficient.
        monkeypatch.setenv("BROWSERBASE_API_KEY", "key")
        assert p.is_available() is False

        # Both env vars set → available.
        monkeypatch.setenv("BROWSERBASE_PROJECT_ID", "proj")
        assert p.is_available() is True


    def test_browser_use_satisfied_by_api_key(
        self, monkeypatch: pytest.MonkeyPatch
    ) -> None:
        _ensure_plugins_loaded()
        from agent.browser_registry import get_provider

        p = get_provider("browser-use")
        assert p is not None
        assert p.is_available() is False
        monkeypatch.setenv("BROWSER_USE_API_KEY", "key")
        assert p.is_available() is True

    def test_firecrawl_requires_api_key(self, monkeypatch: pytest.MonkeyPatch) -> None:
        _ensure_plugins_loaded()
        from agent.browser_registry import get_provider

        p = get_provider("firecrawl")
        assert p is not None
        assert p.is_available() is False
        monkeypatch.setenv("FIRECRAWL_API_KEY", "key")
        assert p.is_available() is True


# ---------------------------------------------------------------------------
# Registry resolution semantics
# ---------------------------------------------------------------------------


class TestRegistryResolution:
    """``_resolve()`` implements the documented three-rule precedence."""

    def test_resolve_none_with_no_creds_returns_none(self) -> None:
        """No config, no env → local mode (None)."""
        _ensure_plugins_loaded()
        from agent.browser_registry import _resolve

        assert _resolve(None) is None

    def test_explicit_local_returns_none(self) -> None:
        """``cloud_provider: local`` is a positive choice; short-circuits to None."""
        _ensure_plugins_loaded()
        from agent.browser_registry import _resolve

        assert _resolve("local") is None


    def test_legacy_walk_prefers_browser_use_over_browserbase(
        self, monkeypatch: pytest.MonkeyPatch
    ) -> None:
        """Rule 3: walk order is browser-use → browserbase."""
        _ensure_plugins_loaded()
        from agent.browser_registry import _resolve

        # Both available — browser-use should win.
        monkeypatch.setenv("BROWSER_USE_API_KEY", "k1")
        monkeypatch.setenv("BROWSERBASE_API_KEY", "k2")
        monkeypatch.setenv("BROWSERBASE_PROJECT_ID", "p")

        provider = _resolve(None)
        assert provider is not None
        assert provider.name == "browser-use"


# ---------------------------------------------------------------------------
# Picker integration
# ---------------------------------------------------------------------------


class TestPickerIntegration:
    """`_plugin_browser_providers()` exposes all three plugins as picker rows."""

    def test_picker_rows_match_registered_plugins(self) -> None:
        _ensure_plugins_loaded()
        from hermes_cli.tools_config import _plugin_browser_providers

        from agent.browser_registry import list_providers

        rows = _plugin_browser_providers()
        names = sorted(r.get("browser_provider") for r in rows)
        # Picker rows are exactly the registered plugins that expose a setup schema.
        expected = sorted(
            p.name for p in list_providers() if p.get_setup_schema() is not None
        )
        assert names and names == expected