import gc

import torch
from detoxify import Detoxify
from transformers import AutoModelForSequenceClassification, AutoTokenizer, pipeline

from app.core.config import TR_OFF_MODEL_PATH

_STATE = {
    "T_O": None,
    "M_O": None,
    "GB_PIPE": None,
    "D_EN": None,
    "D_MULTI": None,
    "TORCH_DEVICE": None,
}


def load_system():
    if _STATE["T_O"] is not None:
        return _STATE

    device_id = 0 if torch.cuda.is_available() else -1
    torch_device = torch.device("cuda" if torch.cuda.is_available() else "cpu")
    print(f"[LOAD] Device: {torch_device}")

    tokenizer_o = AutoTokenizer.from_pretrained(TR_OFF_MODEL_PATH)
    model_o = AutoModelForSequenceClassification.from_pretrained(TR_OFF_MODEL_PATH).to(torch_device)
    model_o.eval()
    print("[LOAD] BERTurk yüklendi")

    if torch_device.type == "cpu":
        try:
            model_o = torch.quantization.quantize_dynamic(
                model_o,
                {torch.nn.Linear},
                dtype=torch.qint8,
            )
            model_o.eval()
            gc.collect()
            print("[LOAD] BERTurk INT8 OK")
        except Exception as e:
            print(f"[LOAD] BERTurk INT8 HATA: {e}")

    try:
        gibberish = pipeline(
            "text-classification",
            model="madhurjindal/autonlp-Gibberish-Detector-492513457",
            device=device_id,
        )
        print("[LOAD] Gibberish yüklendi")
    except Exception as e:
        print(f"[LOAD] Gibberish HATA: {e}")
        gibberish = None

    detox_en = Detoxify("original")
    print("[LOAD] Detoxify EN yüklendi")
    detox_multi = Detoxify("multilingual")
    print("[LOAD] Detoxify Multi yüklendi")

    if torch_device.type == "cpu":
        try:
            detox_en.model = torch.quantization.quantize_dynamic(
                detox_en.model,
                {torch.nn.Linear},
                dtype=torch.qint8,
            )
            gc.collect()
            print("[LOAD] Detoxify EN INT8 OK")
        except Exception as e:
            print(f"[LOAD] Detoxify EN INT8 HATA: {e}")
        try:
            detox_multi.model = torch.quantization.quantize_dynamic(
                detox_multi.model,
                {torch.nn.Linear},
                dtype=torch.qint8,
            )
            gc.collect()
            print("[LOAD] Detoxify Multi INT8 OK")
        except Exception as e:
            print(f"[LOAD] Detoxify Multi INT8 HATA: {e}")

    _STATE.update(
        {
            "T_O": tokenizer_o,
            "M_O": model_o,
            "GB_PIPE": gibberish,
            "D_EN": detox_en,
            "D_MULTI": detox_multi,
            "TORCH_DEVICE": torch_device,
        }
    )
    print("[LOAD] Sistem hazir")

    return _STATE


def get_model_state():
    return load_system()