"""Tests for ratatoskr.sessions per docs/contracts/issues/2.contract.md."""

import httpx
import pytest
import respx

from ratatoskr.sessions import (
    SessionApiFailed,
    create_character,
    delete_character,
    endpoint_for_plane,
    get_capabilities,
    get_character_state,
    get_me,
    get_session_bifrost,
    list_character_models,
)


class TestEndpointForPlane:
    """Issue #17 — endpoint_for_plane: plane name → Worldtree-visible base URL."""

    def test_memory_plane_maps_to_8391(self) -> None:
        """memory [tracer]: 'memory' → http://<host>:8391 (POST-001)."""
        assert endpoint_for_plane("memory", "10.100.10.50") == "http://10.100.10.50:8391"

    def test_affect_plane_maps_to_8390(self) -> None:
        """affect: 'affect' → http://<host>:8390 (POST-001)."""
        assert endpoint_for_plane("affect", "10.100.10.50") == "http://10.100.10.50:8390"

    def test_combined_plane_maps_to_8392(self) -> None:
        """combined [#18 composite]: 'combined' → http://<host>:8392 (POST-001)."""
        assert endpoint_for_plane("combined", "10.100.10.50") == "http://10.100.10.50:8392"

    def test_unknown_plane_raises_value_error(self) -> None:
        """unknown_plane [adversarial]: any other plane → ValueError (PRE-001)."""
        with pytest.raises(ValueError):
            endpoint_for_plane("persona", "10.100.10.50")


class TestGetMe:
    """docs/contracts/issues/2.contract.md FN get_me (slice: capabilities+me)."""

    @respx.mock
    async def test_happy_authenticated(self) -> None:
        """happy_authenticated [happy,tracer]: 200 → parsed identity dict verbatim."""
        respx.get("https://w.example/me").mock(
            return_value=httpx.Response(
                200,
                json={
                    "user_id": "alice",
                    "scopes": ["conversations.read", "conversations.write"],
                    "tier": "user",
                    "key_id": "a1b2c3d4",
                    "key_label": "alice phone",
                },
            )
        )
        async with httpx.AsyncClient(base_url="https://w.example") as client:
            me = await get_me(client)
        assert me["user_id"] == "alice"
        assert me["tier"] == "user"
        assert me["key_id"] == "a1b2c3d4"
        assert me["scopes"] == ["conversations.read", "conversations.write"]

    @respx.mock
    async def test_anonymous_dev_mode(self) -> None:
        """anonymous_dev_mode: 200 anonymous shape → dict with tier=anonymous."""
        respx.get("https://w.example/me").mock(
            return_value=httpx.Response(
                200,
                json={
                    "user_id": "anonymous",
                    "scopes": ["conversations.read"],
                    "tier": "anonymous",
                },
            )
        )
        async with httpx.AsyncClient(base_url="https://w.example") as client:
            me = await get_me(client)
        assert me["tier"] == "anonymous"
        assert "key_id" not in me  # optional fields omitted, not null

    @respx.mock
    async def test_401_raises_session_api_failed(self) -> None:
        """401_raises [error]: bad/absent key → SessionApiFailed(status=401)."""
        respx.get("https://w.example/me").mock(
            return_value=httpx.Response(401, json={"detail": "auth_invalid"})
        )
        async with httpx.AsyncClient(base_url="https://w.example") as client:
            with pytest.raises(SessionApiFailed) as exc:
                await get_me(client)
        assert exc.value.status == 401


class TestGetCapabilities:
    """docs/contracts/issues/2.contract.md FN get_capabilities (slice: capabilities+me)."""

    @respx.mock
    async def test_happy(self) -> None:
        """happy [happy]: 200 → ephemeral_templates dict verbatim."""
        respx.get("https://w.example/capabilities").mock(
            return_value=httpx.Response(
                200,
                json={
                    "ephemeral_templates": {
                        "echo": {
                            "allowed_models": ["glm5-turbo", "glm4.7"],
                            "default_model": "glm5-turbo",
                            "system_prompt_max_bytes": 32768,
                        }
                    }
                },
            )
        )
        async with httpx.AsyncClient(base_url="https://w.example") as client:
            caps = await get_capabilities(client)
        echo = caps["ephemeral_templates"]["echo"]
        assert echo["default_model"] == "glm5-turbo"
        assert echo["system_prompt_max_bytes"] == 32768

    @respx.mock
    async def test_non_200_raises(self) -> None:
        """non_200_raises [error]: 500 → SessionApiFailed(status=500)."""
        respx.get("https://w.example/capabilities").mock(
            return_value=httpx.Response(500, content=b"boom")
        )
        async with httpx.AsyncClient(base_url="https://w.example") as client:
            with pytest.raises(SessionApiFailed) as exc:
                await get_capabilities(client)
        assert exc.value.status == 500


class TestGetSessionBifrost:
    """#2 contract — get_session_bifrost (GET /admin/sessions/{id}/bifrost, #176)."""

    @respx.mock
    async def test_happy_uses_admin_bearer(self) -> None:
        """happy [happy,tracer]: 200 → binding dict; request carries the ADMIN bearer (override)."""
        route = respx.get("https://w.example/admin/sessions/s1/bifrost").mock(
            return_value=httpx.Response(
                200,
                json={
                    "endpoint_url": "https://bifrost.example/mcp",
                    "consumer_id": "alice",
                    "connected": True,
                    "capabilities_granted": ["tools:call", "tools:read"],
                    "tools": [{"name": "bifrost.alice.echo", "description": "echo"}],
                },
            )
        )
        async with httpx.AsyncClient(
            base_url="https://w.example",
            headers={"Authorization": "Bearer consumer-key"},
        ) as client:
            state = await get_session_bifrost(client, "s1", admin_key="admin-xyz")
        assert state["connected"] is True
        assert state["tools"][0]["name"] == "bifrost.alice.echo"
        # the request overrode the client's default consumer bearer with the admin key
        assert route.calls[0].request.headers["Authorization"] == "Bearer admin-xyz"

    @respx.mock
    async def test_403_scope_denied(self) -> None:
        """403 [error]: admin key lacks admin.sessions.read → SessionApiFailed(403)."""
        respx.get("https://w.example/admin/sessions/s1/bifrost").mock(
            return_value=httpx.Response(403, json={"error_code": "auth_scope_denied"})
        )
        async with httpx.AsyncClient(base_url="https://w.example") as client:
            with pytest.raises(SessionApiFailed) as exc:
                await get_session_bifrost(client, "s1", admin_key="k")
        assert exc.value.status == 403

    @respx.mock
    async def test_404_not_bound(self) -> None:
        """404 [error]: session_not_bifrost_bound → SessionApiFailed(404)."""
        respx.get("https://w.example/admin/sessions/s1/bifrost").mock(
            return_value=httpx.Response(404, json={"error_code": "session_not_bifrost_bound"})
        )
        async with httpx.AsyncClient(base_url="https://w.example") as client:
            with pytest.raises(SessionApiFailed) as exc:
                await get_session_bifrost(client, "s1", admin_key="k")
        assert exc.value.status == 404

    @respx.mock
    async def test_empty_admin_key_asserts(self) -> None:
        """empty_admin_key [adversarial]: '' → AssertionError; no HTTP issued."""
        route = respx.get("https://w.example/admin/sessions/s1/bifrost").mock(
            return_value=httpx.Response(200, json={})
        )
        async with httpx.AsyncClient(base_url="https://w.example") as client:
            with pytest.raises(AssertionError):
                await get_session_bifrost(client, "s1", admin_key="")
        assert route.call_count == 0


class TestTransientCharacters:
    """docs/contracts/issues/2.contract.md — transient-character wrappers (#161)."""

    @respx.mock
    async def test_list_models(self) -> None:
        """list_models [happy,tracer]: 200 → {items:[...]} verbatim."""
        respx.get("https://w.example/models/available-for-characters").mock(
            return_value=httpx.Response(200, json={"items": [{"name": "fast", "thinking": False}]})
        )
        async with httpx.AsyncClient(base_url="https://w.example") as client:
            models = await list_character_models(client)
        assert models["items"][0]["name"] == "fast"

    @respx.mock
    async def test_create_body_and_response(self) -> None:
        """create [happy]: body is {character, state}; 201 → {character_id, ttl_expires_at}."""
        import json as _json

        route = respx.post("https://w.example/characters").mock(
            return_value=httpx.Response(201, json={"character_id": "char_x", "ttl_expires_at": "t"})
        )
        async with httpx.AsyncClient(base_url="https://w.example") as client:
            out = await create_character(client, {"schema_version": "1", "name": "H"})
        assert out["character_id"] == "char_x"
        body = _json.loads(route.calls[0].request.content)
        assert body == {"character": {"schema_version": "1", "name": "H"}, "state": None}

    @respx.mock
    async def test_get_state(self) -> None:
        """get_state [happy]: 200 → live PAD/emotions snapshot."""
        respx.get("https://w.example/characters/char_x/state").mock(
            return_value=httpx.Response(200, json={"schema_version": "1", "pad": [0.4, 0.1, -0.2]})
        )
        async with httpx.AsyncClient(base_url="https://w.example") as client:
            state = await get_character_state(client, "char_x")
        assert state["pad"] == [0.4, 0.1, -0.2]

    @respx.mock
    async def test_delete_204(self) -> None:
        """delete [happy]: 204 → None."""
        respx.delete("https://w.example/characters/char_x").mock(return_value=httpx.Response(204))
        async with httpx.AsyncClient(base_url="https://w.example") as client:
            assert await delete_character(client, "char_x") is None

    @respx.mock
    async def test_create_403_scope(self) -> None:
        """create_403 [error]: key lacks character.write → SessionApiFailed(403)."""
        respx.post("https://w.example/characters").mock(
            return_value=httpx.Response(403, json={"error_code": "auth_scope_denied"})
        )
        async with httpx.AsyncClient(base_url="https://w.example") as client:
            with pytest.raises(SessionApiFailed) as exc:
                await create_character(client, {"name": "H"})
        assert exc.value.status == 403