"""The mind pipeline: the deliberation pass (think privately before answering)."""
from __future__ import annotations

import importlib

import pytest


@pytest.fixture
def lyra(tmp_path, monkeypatch):
    monkeypatch.setenv("LYRA_DB_PATH", str(tmp_path / "test.db"))
    from lyra import llm
    monkeypatch.setattr(llm, "embed", lambda texts: [[0.1, 0.2, 0.3] for _ in texts])
    import lyra.memory as memory
    importlib.reload(memory)
    import lyra.mind as mind
    importlib.reload(mind)
    return memory, mind


def test_should_deliberate_skips_trivial(lyra):
    _, mind = lyra
    assert mind._should_deliberate("How would we actually start building this?")
    assert mind._should_deliberate("I disagree, that seems risky")
    for trivial in ("ok", "lol", "thanks", "yeah", "nice", "👍", "k"):
        assert not mind._should_deliberate(trivial)
    assert not mind._should_deliberate("ok!")        # punctuation stripped
    assert not mind._should_deliberate("hey")         # too short


def test_deliberation_note_runs_and_appends(lyra, monkeypatch):
    _, mind = lyra
    calls = []

    def fake_complete(messages, backend=None, model=None):
        calls.append(messages)
        return "I actually think the first move is the smallest end-to-end slice."

    monkeypatch.setattr(mind.llm, "complete", fake_complete)
    note = mind._deliberation_note("s1", "How would we start on this?", "cloud", None, [])
    assert note and note["role"] == "system"
    assert "first move is the smallest" in note["content"]      # her thinking carried in
    assert "numbered list" in note["content"].lower()           # voice enforcement attached
    assert len(calls) == 1


def test_deliberation_skipped_when_disabled(lyra, monkeypatch):
    _, mind = lyra
    monkeypatch.setenv("CHAT_DELIBERATE", "false")
    called = []
    monkeypatch.setattr(mind.llm, "complete", lambda *a, **k: called.append(1) or "x")
    assert mind._deliberation_note("s1", "a real substantive question here", "cloud", None, []) is None
    assert called == []                                          # no LLM call when off


def test_assemble_runs_the_pipeline(lyra, monkeypatch):
    memory, mind = lyra
    monkeypatch.setenv("CHAT_DELIBERATE", "false")  # keep it offline for the structure test
    memory.ensure_session("s1")
    turn = mind.assemble("s1", "hey what's up", "cloud", None)
    assert turn.mode is not None                       # route ran
    assert turn.messages and turn.messages[-1]["role"] == "user"   # compose ran
    assert turn.messages[-1]["content"] == "hey what's up"


# --- mind/mouth split (P3) ----------------------------------------------

def test_mouth_target_off_by_default(monkeypatch):
    import importlib
    from lyra import config
    monkeypatch.delenv("MOUTH_BACKEND", raising=False)
    monkeypatch.delenv("MOUTH_MODEL", raising=False)
    import lyra.chat as chat
    importlib.reload(chat)
    assert chat._mouth_target(config.load(), "cloud", "gpt-4o") is None  # mouth == mind


def test_mouth_target_when_configured(monkeypatch):
    import importlib
    from lyra import config
    monkeypatch.setenv("MOUTH_BACKEND", "local")
    monkeypatch.setenv("MOUTH_MODEL", "dolphin3:8b")
    import lyra.chat as chat
    importlib.reload(chat)
    assert chat._mouth_target(config.load(), "cloud", "gpt-4o") == ("local", "dolphin3:8b")


def test_voice_messages_carries_draft_and_instruction(lyra):
    _, mind = lyra
    out = mind.voice_messages([{"role": "user", "content": "hi"}], "draft with FACT 42")
    assert out[-2] == {"role": "assistant", "content": "draft with FACT 42"}
    assert out[-1]["role"] == "system" and "your own voice" in out[-1]["content"].lower()


def test_voice_pass_revoices_then_falls_back(lyra, monkeypatch):
    _, mind = lyra
    import importlib
    import lyra.chat as chat
    importlib.reload(chat)
    monkeypatch.setattr(chat.llm, "complete", lambda msgs, backend=None, model=None: "voiced (FACT 42)")
    assert chat._voice_pass([], "draft FACT 42", "local", "dolphin3:8b") == "voiced (FACT 42)"
    # on failure it keeps the mind's draft (chat must not break)
    def boom(*a, **k):
        raise RuntimeError("mouth down")
    monkeypatch.setattr(chat.llm, "complete", boom)
    assert chat._voice_pass([], "draft FACT 42", "local", "dolphin3:8b") == "draft FACT 42"