"""Verify LSTM removal at the 3 wiring points, VideoHead/TalkerHead preserved."""
import torch
import sys
import os

sys.path.insert(0, os.path.join(os.path.dirname(__file__), "..", ".."))

from arbitor.main import ARBModel
from arbitor.components import LossWeights, LossComponents


def _get_model():
    return ARBModel()


def test_lstm_removed():
    model = _get_model()
    assert not hasattr(model, "lstm"), "lstm should be removed"
    assert not hasattr(model, "lstm_enabled"), "lstm_enabled should be removed"
    assert not hasattr(model, "switch_conversation"), "switch_conversation removed"
    assert not hasattr(model, "reset_conversation"), "reset_conversation removed"
    print(" PASS test_lstm_removed")


def test_conv_vq_removed():
    model = _get_model()
    assert not hasattr(model, "conv_vq"), "conv_vq should be removed"
    assert not hasattr(model, "conv_vq_enabled"), "conv_vq_enabled removed"
    assert not hasattr(model, "_conv_vq_ready"), "_conv_vq_ready removed"
    print(" PASS test_conv_vq_removed")


def test_video_head_preserved():
    model = _get_model()
    assert hasattr(model, "video_head"), "video_head should exist"
    print(" PASS test_video_head_preserved")


def test_talker_head_preserved():
    model = _get_model()
    assert hasattr(model, "talker_head"), "talker_head should exist"
    print(" PASS test_talker_head_preserved")


def test_attention_wired():
    model = _get_model()
    assert hasattr(model, "attention"), "attention module missing"
    assert hasattr(model, "attention_enabled"), "attention_enabled flag missing"
    print(" PASS test_attention_wired")


def test_kv_ledger_exists():
    model = _get_model()
    assert hasattr(model, "kv_ledger"), "kv_ledger missing"
    assert hasattr(model, "kq_cache"), "kq_cache missing"
    print(" PASS test_kv_ledger_exists")


def test_loss_cleanup():
    lw = LossWeights()
    assert not hasattr(lw, "lstm_hidden_reg")
    assert not hasattr(lw, "conv_vq_commitment")
    lc = LossComponents(weights=lw)
    assert not hasattr(lc, "lstm_hidden_reg")
    assert not hasattr(lc, "conv_vq_commitment")
    print(" PASS test_loss_cleanup")


def test_moe_clean():
    model = _get_model()
    if model.moe is not None:
        assert not hasattr(model.moe, "router_h"), "router_h should be removed"
        assert not hasattr(model.moe, "lstm_enabled"), "lstm_enabled should be removed"
    print(" PASS test_moe_clean")


def test_memory_budget():
    from arbitor.config import KV_LEDGER_SIZE, KQ_CACHE_SIZE
    ledger_bytes = KV_LEDGER_SIZE * 4
    kq_bytes = KQ_CACHE_SIZE * 4
    total_mb = (ledger_bytes + kq_bytes) / (1024 * 1024)
    assert total_mb < 100
    print(f" PASS test_memory_budget ({total_mb:.2f} MB)")


if __name__ == "__main__":
    test_lstm_removed()
    test_conv_vq_removed()
    test_video_head_preserved()
    test_talker_head_preserved()
    test_attention_wired()
    test_kv_ledger_exists()
    test_loss_cleanup()
    test_moe_clean()
    test_memory_budget()
    print("\nAll LSTM removal tests PASS")