"""Code-side guards around the real-LLM director path: the anti-repetition retry,
new_character repair defaults, and the /no_think compaction switch."""

from __future__ import annotations

from visualnovel import config, orchestrator
from visualnovel.schemas import (
    Character,
    Directives,
    DirectorOutput,
    GameState,
    NewCharacter,
    Scene,
    Turn,
)


def _state() -> GameState:
    s = GameState(
        seed=1,
        vibe="v",
        style_guide="s",
        scene=Scene(id="a", place="A", description="d", present=["moth"]),
        characters={"moth": Character(id="moth", name="Moth", one_line="a moth")},
    )
    s.recent_turns.append(Turn(player="hi", speaker="moth", dialogue="The wood remembers you."))
    return s


class _RecordingLLM:
    """Returns scripted complete_json payloads and records every call's kwargs."""

    def __init__(self, replies: list[dict]) -> None:
        self.replies = list(replies)
        self.calls: list[dict] = []

    def complete(self, messages, **kw):  # pragma: no cover - unused here
        return ""

    def complete_json(self, messages, schema, **kw):
        self.calls.append({"messages": messages, **kw})
        return self.replies.pop(0)


def _payload(dialogue: str) -> dict:
    return {"speaker": "moth", "dialogue": dialogue, "emotion": "neutral"}


def test_repetition_triggers_one_hotter_retry(monkeypatch):
    monkeypatch.setattr(config, "USE_MOCK", False)
    state = _state()
    llm = _RecordingLLM([_payload("The wood remembers you."), _payload("A fresh new line.")])
    out = orchestrator.direct_turn(llm, state, "hello")
    assert len(llm.calls) == 2
    assert llm.calls[1]["temperature"] == 0.9
    assert llm.calls[1]["presence_penalty"] == 0.8
    assert "You already said this line" in llm.calls[1]["messages"][1]["content"]
    assert out.dialogue == "A fresh new line."


def test_no_repetition_means_single_call(monkeypatch):
    monkeypatch.setattr(config, "USE_MOCK", False)
    state = _state()
    llm = _RecordingLLM([_payload("Something entirely different.")])
    out = orchestrator.direct_turn(llm, state, "hello")
    assert len(llm.calls) == 1
    assert out.dialogue == "Something entirely different."


def test_failed_retry_keeps_first_output(monkeypatch):
    monkeypatch.setattr(config, "USE_MOCK", False)
    state = _state()

    class _FailsSecond(_RecordingLLM):
        def complete_json(self, messages, schema, **kw):
            if self.calls:
                self.calls.append({})
                raise RuntimeError("boom")
            return super().complete_json(messages, schema, **kw)

    llm = _FailsSecond([_payload("The wood remembers you.")])
    out = orchestrator.direct_turn(llm, state, "hello")
    assert out.dialogue == "The wood remembers you."  # repeat kept rather than crash


def test_llm_failure_falls_back_to_safe_line(monkeypatch):
    monkeypatch.setattr(config, "USE_MOCK", False)

    class _Broken:
        def complete(self, *a, **kw):  # pragma: no cover
            return ""

        def complete_json(self, *a, **kw):
            raise RuntimeError("model exploded")

    out = orchestrator.direct_turn(_Broken(), _state(), "hello")
    assert out.speaker == "moth"  # first present character
    assert out.dialogue  # a bland in-fiction line, never a crash


def test_mock_mode_never_calls_llm():
    class _Bomb:
        def complete(self, *a, **kw):
            raise AssertionError("must not be called in mock mode")

        def complete_json(self, *a, **kw):
            raise AssertionError("must not be called in mock mode")

    out = orchestrator.direct_turn(_Bomb(), _state(), "hello")
    assert out.dialogue


def test_repair_fills_new_character_defaults():
    state = _state()
    out = DirectorOutput(
        speaker="moth",
        dialogue="x",
        directives=Directives(
            new_character=NewCharacter(id="aoi", name="Aoi", one_line="quiet girl", appearance="")
        ),
    )
    repaired = orchestrator._repair(state, out)
    nc = repaired.directives.new_character
    assert nc.traits == ["curious", "reserved"]
    assert nc.appearance == "quiet girl"  # falls back to one_line


def test_compact_memory_sends_no_think(monkeypatch):
    monkeypatch.setattr(config, "USE_MOCK", False)
    state = _state()
    for i in range(2 * config.RECENT_TURNS_K + 1):
        state.recent_turns.append(Turn(player=f"p{i}", speaker="moth", dialogue=f"d{i}"))

    captured: dict = {}

    class _Stub:
        def complete(self, messages, **kw):
            captured["messages"] = messages
            return "A neat prose summary."

        def complete_json(self, messages, schema, **kw):  # pragma: no cover
            return {}

    orchestrator.compact_memory(_Stub(), state)
    assert captured["messages"][1]["content"].rstrip().endswith("/no_think")
    assert state.summary == "A neat prose summary."


def test_directive_schema_forces_emotion_and_delta():
    from visualnovel import prompts

    schema = prompts.directive_schema()
    # The grammar must not let the model omit these (it does, when optional):
    # emotion otherwise stays "neutral", relationship_delta stays 0 forever
    assert "emotion" in schema["required"]
    assert "relationship_delta" in schema["$defs"]["Directives"]["required"]


def test_scout_schema_requires_new_character():
    from visualnovel import prompts

    scout = prompts.scout_schema()["$defs"]["Directives"]
    assert "new_character" in scout["required"]
    assert scout["properties"]["new_character"] == {"$ref": "#/$defs/NewCharacter"}
    # the cached base schema must stay untouched (new_character optional elsewhere)
    base = prompts.directive_schema()["$defs"]["Directives"]
    assert "new_character" not in base.get("required", [])


def test_scout_uses_guaranteed_schema(monkeypatch):
    monkeypatch.setattr(config, "USE_MOCK", False)
    state = _state()
    llm = _RecordingLLM(
        [
            {
                "speaker": "yuki",
                "dialogue": "Oh - hello! I am Yuki.",
                "emotion": "shy",
                "directives": {
                    "new_character": {
                        "id": "yuki",
                        "name": "Yuki",
                        "one_line": "a quiet bookworm",
                        "appearance": "glasses",
                    }
                },
            }
        ]
    )

    captured: dict = {}
    original = llm.complete_json

    def _spy(messages, schema, **kw):
        captured["schema"] = schema
        return original(messages, schema, **kw)

    llm.complete_json = _spy
    out = orchestrator.direct_turn(llm, state, "", action="scout")
    assert "new_character" in captured["schema"]["$defs"]["Directives"]["required"]
    assert out.directives.new_character is not None
    assert out.speaker == "yuki"  # the newcomer may speak on arrival


def test_scout_stage_full_keeps_optional_schema(monkeypatch):
    monkeypatch.setattr(config, "USE_MOCK", False)
    state = _state()
    state.scene.present = ["moth", "a", "b"]  # MAX_PRESENT reached
    llm = _RecordingLLM([_payload("The courtyard is quiet today.")])

    captured: dict = {}
    original = llm.complete_json

    def _spy(messages, schema, **kw):
        captured["schema"] = schema
        captured["user"] = messages[1]["content"]
        return original(messages, schema, **kw)

    llm.complete_json = _spy
    orchestrator.direct_turn(llm, state, "", action="scout")
    assert "new_character" not in captured["schema"]["$defs"]["Directives"].get("required", [])
    assert "The stage is full" in captured["user"]


def test_repair_clips_runaway_new_character_fields():
    state = _state()
    out = DirectorOutput(
        speaker="moth",
        dialogue="x",
        directives=Directives(
            new_character=NewCharacter(
                id="kaaris",
                name="Kaaris",
                one_line="a towering president",
                appearance="muscular, bald",
                goals="to maintain control " * 300,  # runaway generation
            )
        ),
    )
    repaired = orchestrator._repair(state, out)
    assert len(repaired.directives.new_character.goals.split()) <= 50


def test_action_note_outside_player_quotes():
    from visualnovel import memory, prompts

    state = _state()
    note = prompts.action_note("scout")
    ctx = memory.assemble_context(state, "", action_note=note)
    assert "DIRECTOR NOTE (mandatory):" in ctx
    # the note must not sit inside the quoted player line
    assert 'NOW SAYS: "…"' in ctx


def test_newcomer_may_speak_on_arrival_turn():
    # "Look around" introduces someone — the newcomer must survive _repair as speaker
    # even though they are not yet in scene.present (apply_directives adds them after).
    state = _state()
    out = DirectorOutput(
        speaker="Yuki!",  # raw LLM id, needs slug normalization
        dialogue="Oh - were you looking for me?",
        directives=Directives(
            new_character=NewCharacter(
                id="Yuki!", name="Yuki", one_line="a quiet bookworm", appearance="glasses"
            )
        ),
    )
    repaired = orchestrator._repair(state, out)
    assert repaired.speaker == "yuki"  # normalized to the id apply_directives will create


def test_director_output_backward_compatible():
    # An old /tmp pending_out (pre remember_fact) must still validate
    old = {"speaker": "moth", "dialogue": "hi", "emotion": "joy", "directives": {}}
    out = DirectorOutput.model_validate(old)
    assert out.directives.remember_fact is None