# SPDX-License-Identifier: Apache-2.0
from collections.abc import Iterable
from typing import Optional

import torch
from torch import nn
from transformers import PretrainedConfig

from vllm.attention import Attention, AttentionType
from vllm.compilation.decorators import support_torch_compile
from vllm.config import CacheConfig, VllmConfig
from vllm.distributed import get_tensor_model_parallel_world_size
from vllm.model_executor.layers.activation import (get_act_and_mul_fn,
                                                   get_act_fn)
from vllm.model_executor.layers.linear import (ColumnParallelLinear,
                                               MergedColumnParallelLinear,
                                               QKVParallelLinear,
                                               ReplicatedLinear,
                                               RowParallelLinear)
from vllm.model_executor.layers.quantization import QuantizationConfig
from vllm.model_executor.layers.rotary_embedding import get_rope
from vllm.model_executor.layers.vocab_parallel_embedding import (
    VocabParallelEmbedding)
from vllm.model_executor.model_loader.weight_utils import default_weight_loader
from vllm.model_executor.models import SupportsV0Only
from vllm.model_executor.models.interfaces import SupportsQuant
from vllm.model_executor.models.utils import WeightsMapper
from vllm.sequence import IntermediateTensors


class BertWithRopeEmbedding(nn.Module):

    def __init__(self, config: PretrainedConfig):

        super().__init__()
        if config.position_embedding_type not in ["rope", "rotary"]:
            raise ValueError("Only 'rotary'('rope') position_embedding_type" +
                             " is supported")

        self.word_embeddings = VocabParallelEmbedding(config.vocab_size,
                                                      config.hidden_size)
        if config.type_vocab_size > 0:
            self.token_type_embeddings = VocabParallelEmbedding(
                config.type_vocab_size, config.hidden_size)
        else:
            self.token_type_embeddings = None

        self.LayerNorm = nn.LayerNorm(config.hidden_size,
                                      eps=config.layer_norm_eps)

    def forward(
        self,
        input_ids: torch.Tensor,
        token_type_ids: Optional[torch.Tensor] = None,
    ) -> torch.Tensor:
        input_shape = input_ids.size()
        inputs_embeds = self.word_embeddings(input_ids)

        embeddings = inputs_embeds
        if self.token_type_embeddings is not None:
            if token_type_ids is None:
                token_type_ids = torch.zeros(input_shape,
                                             dtype=torch.long,
                                             device=inputs_embeds.device)

            token_type_embeddings = self.token_type_embeddings(token_type_ids)
            embeddings += token_type_embeddings

        embeddings = self.LayerNorm(embeddings)
        return embeddings


class BertWithRopeAttention(nn.Module):

    def __init__(
        self,
        hidden_size: int,
        num_attention_heads: int,
        cache_config: Optional[CacheConfig] = None,
        quant_config: Optional[QuantizationConfig] = None,
        bias: bool = True,
        rotary_kwargs: Optional[dict] = None,
        prefix: str = "",
    ):
        super().__init__()

        self.hidden_size = hidden_size
        tp_size = get_tensor_model_parallel_world_size()

        self.total_num_heads = num_attention_heads
        assert self.total_num_heads % tp_size == 0

        self.num_heads = self.total_num_heads // tp_size
        self.total_num_kv_heads = self.total_num_heads
        self.head_dim = self.hidden_size // self.total_num_heads
        assert self.head_dim * self.total_num_heads == self.hidden_size

        self.num_kv_heads = max(1, self.total_num_kv_heads // tp_size)

        self.q_size = self.num_heads * self.head_dim
        self.kv_size = self.num_kv_heads * self.head_dim
        self.scaling = self.head_dim**-0.5

        self.qkv_proj = QKVParallelLinear(
            hidden_size=self.hidden_size,
            head_size=self.head_dim,
            total_num_heads=self.total_num_heads,
            total_num_kv_heads=self.total_num_kv_heads,
            bias=bias,
            quant_config=quant_config,
            prefix=f"{prefix}.qkv_proj")

        self.rotary_emb = get_rope(**rotary_kwargs)

        self.attn = Attention(num_heads=self.num_heads,
                              head_size=self.head_dim,
                              scale=self.scaling,
                              num_kv_heads=self.num_kv_heads,
                              cache_config=cache_config,
                              quant_config=quant_config,
                              prefix=f"{prefix}.attn",
                              attn_type=AttentionType.ENCODER_ONLY)

        self.out_proj = RowParallelLinear(input_size=hidden_size,
                                          output_size=hidden_size,
                                          bias=bias,
                                          quant_config=quant_config,
                                          prefix=f"{prefix}.dense")

    def forward(
        self,
        positions: torch.Tensor,
        hidden_states: torch.Tensor,
    ) -> torch.Tensor:
        qkv, _ = self.qkv_proj(hidden_states)
        q, k, v = qkv.split([self.q_size, self.kv_size, self.kv_size], dim=-1)
        q, k = self.rotary_emb(positions, q, k)
        attn_output = self.attn(q, k, v)
        output, _ = self.out_proj(attn_output)
        return output


class BertWithRopeGatedMLP(nn.Module):

    def __init__(self,
                 hidden_size: int,
                 intermediate_size: int,
                 hidden_act: str,
                 bias: bool = True,
                 quant_config: Optional[QuantizationConfig] = None,
                 prefix: str = ""):
        super().__init__()
        self.act_fn = get_act_and_mul_fn(hidden_act)
        self.gate_up_proj = MergedColumnParallelLinear(
            hidden_size,
            [intermediate_size] * 2,
            bias=bias,
            quant_config=quant_config,
            prefix=f"{prefix}.gate_up_proj",
        )
        self.down_proj = RowParallelLinear(input_size=intermediate_size,
                                           output_size=hidden_size,
                                           bias=bias,
                                           quant_config=quant_config,
                                           prefix=f"{prefix}.down_proj")

    def forward(self, hidden_states: torch.Tensor) -> torch.Tensor:
        gate_up, _ = self.gate_up_proj(hidden_states)
        hidden_states = self.act_fn(gate_up)
        hidden_states, _ = self.down_proj(hidden_states)
        return hidden_states


class BertWithRopeMLP(nn.Module):

    def __init__(self,
                 hidden_size: int,
                 intermediate_size: int,
                 hidden_act: str,
                 bias: bool = True,
                 quant_config: Optional[QuantizationConfig] = None,
                 prefix: str = ""):
        super().__init__()
        self.act_fn = get_act_fn(hidden_act)
        self.up_proj = ColumnParallelLinear(input_size=hidden_size,
                                            output_size=intermediate_size,
                                            bias=bias,
                                            quant_config=quant_config,
                                            prefix=f"{prefix}.up_proj")
        self.down_proj = RowParallelLinear(input_size=intermediate_size,
                                           output_size=hidden_size,
                                           bias=bias,
                                           quant_config=quant_config,
                                           prefix=f"{prefix}.down_proj")

    def forward(self, hidden_states: torch.Tensor) -> torch.Tensor:
        hidden_states, _ = self.up_proj(hidden_states)
        hidden_states = self.act_fn(hidden_states)
        hidden_states, _ = self.down_proj(hidden_states)
        return hidden_states


class NomicRouter(nn.Module):

    def __init__(self, hidden_size: int, moe_num_experts: int, moe_top_k: int):
        super().__init__()
        self.moe_top_k = moe_top_k
        self.layer = ReplicatedLinear(hidden_size, moe_num_experts, bias=False)

    def forward(
        self, x: torch.Tensor
    ) -> tuple[torch.Tensor, torch.Tensor, torch.LongTensor]:
        weights = self.layer(x.view(-1, x.shape[-1]))[0].softmax(
            dim=-1, dtype=torch.float32)
        top_weights, top_experts = torch.topk(weights, self.moe_top_k, dim=-1)
        weights = weights.to(x.dtype)
        top_weights = top_weights.to(x.dtype)
        return weights, top_weights, top_experts  # type: ignore


class NomicExpertMLP(nn.Module):

    def __init__(self, hidden_size: int, ffn_hidden_size: int,
                 moe_num_experts: int, ffn_act_fn: str):
        super().__init__()
        self.hidden_size = hidden_size
        self.ffn_hidden_size = ffn_hidden_size
        self.moe_num_experts = moe_num_experts

        self.w1 = nn.Parameter(
            torch.empty(moe_num_experts * ffn_hidden_size, hidden_size))
        self.w2 = nn.Parameter(
            torch.empty(moe_num_experts * ffn_hidden_size, hidden_size))
        self.activation_fn = get_act_fn(ffn_act_fn)

    def forward(self, x: torch.Tensor, expert_idx: int) -> torch.Tensor:
        expert_w1 = self.w1.view(self.moe_num_experts, self.ffn_hidden_size,
                                 self.hidden_size)[expert_idx]
        expert_w2 = self.w2.view(self.moe_num_experts, self.ffn_hidden_size,
                                 self.hidden_size)[expert_idx]

        x1 = x.matmul(expert_w1.t())
        act_out = self.activation_fn(x1)
        x2 = act_out.matmul(expert_w2)
        return x2


class NomicExperts(nn.Module):

    def __init__(self, config, hidden_size: int, ffn_hidden_size: int,
                 moe_num_experts: int):
        super().__init__()
        self.moe_num_experts = moe_num_experts

        self.mlp = NomicExpertMLP(hidden_size=config.n_embd,
                                  ffn_hidden_size=config.n_inner,
                                  moe_num_experts=moe_num_experts,
                                  ffn_act_fn=config.hidden_act)
        self.bias = nn.Parameter(torch.zeros(config.n_embd))

    def forward(self, x: torch.Tensor, weights: torch.Tensor,
                top_weights: torch.Tensor,
                top_experts: torch.LongTensor) -> torch.Tensor:
        q_len, hidden_size = x.shape
        x = x.view(-1, hidden_size)
        out = torch.zeros_like(x)

        expert_mask = nn.functional.one_hot(
            top_experts, num_classes=self.moe_num_experts).permute(2, 1, 0)
        for expert_idx in range(0, self.moe_num_experts):
            topk_idx, token_idx = torch.where(expert_mask[expert_idx])
            if token_idx.shape[0] == 0:
                continue

            token_list = token_idx.tolist()
            topk_list = topk_idx.tolist()

            expert_tokens = x[None, token_list].reshape(-1, hidden_size)
            expert_out = self.mlp(
                expert_tokens, expert_idx) * top_weights[token_list, topk_list,
                                                         None]

            out.index_add_(0, token_idx, expert_out)

        out = out.reshape(q_len, hidden_size)
        return out + self.bias


class NomicMoELayer(nn.Module):

    def __init__(self, config: PretrainedConfig):
        super().__init__()

        self.router = NomicRouter(
            config.n_embd,
            moe_num_experts=config.num_experts,
            moe_top_k=config.moe_top_k,
        )

        self.experts = NomicExperts(
            config,
            hidden_size=config.n_embd,
            ffn_hidden_size=config.n_inner,
            moe_num_experts=config.num_experts,
        )

    def forward(self, x: torch.Tensor):
        weights, top_weights, top_experts = self.router(x)
        out = self.experts(x, weights, top_weights, top_experts)
        return out


class BertWithRopeBlock(nn.Module):

    def __init__(self,
                 config: PretrainedConfig,
                 cache_config: Optional[CacheConfig] = None,
                 quant_config: Optional[QuantizationConfig] = None,
                 moe: bool = False,
                 bias: bool = True,
                 rotary_kwargs: Optional[dict] = None,
                 prefix: str = ""):
        super().__init__()
        self.attn = BertWithRopeAttention(
            hidden_size=config.hidden_size,
            num_attention_heads=config.num_attention_heads,
            cache_config=cache_config,
            quant_config=quant_config,
            bias=bias,
            rotary_kwargs=rotary_kwargs,
            prefix=f"{prefix}.attention")

        if moe:
            self.mlp = NomicMoELayer(config=config, )
        else:
            if config.hidden_act in ["silu", "geglu"]:
                self.mlp = BertWithRopeGatedMLP(
                    hidden_size=config.hidden_size,
                    intermediate_size=config.intermediate_size,
                    hidden_act=config.hidden_act,
                    bias=bias,
                    quant_config=quant_config,
                    prefix=f"{prefix}.mlp")
            else:
                self.mlp = BertWithRopeMLP(
                    hidden_size=config.hidden_size,
                    intermediate_size=config.intermediate_size,
                    hidden_act=config.hidden_act,
                    bias=bias,
                    quant_config=quant_config,
                    prefix=f"{prefix}.mlp")

        self.attn_ln = nn.LayerNorm(config.hidden_size,
                                    eps=config.layer_norm_eps)
        self.mlp_ln = nn.LayerNorm(config.hidden_size,
                                   eps=config.layer_norm_eps)

    def forward(self, positions: torch.Tensor, hidden_states: torch.Tensor):
        attn_output = self.attn(positions, hidden_states)
        hidden_states = self.attn_ln(hidden_states + attn_output)
        mlp_out = self.mlp(hidden_states)
        hidden_states = self.mlp_ln(hidden_states + mlp_out)
        return hidden_states


@support_torch_compile
class BertWithRopeEncoder(nn.Module):

    def __init__(self,
                 vllm_config: VllmConfig,
                 bias: bool = True,
                 rotary_kwargs: Optional[dict] = None,
                 prefix: str = ""):
        super().__init__()
        config = vllm_config.model_config.hf_config
        cache_config = vllm_config.cache_config
        quant_config = vllm_config.quant_config
        every_n = getattr(config, "moe_every_n_layers", 0)
        self.layers = nn.ModuleList([
            BertWithRopeBlock(config=config,
                              cache_config=cache_config,
                              quant_config=quant_config,
                              bias=bias,
                              moe=every_n > 0 and (layer_idx % every_n == 1),
                              rotary_kwargs=rotary_kwargs,
                              prefix=f"{prefix}.layer.{layer_idx}")
            for layer_idx in range(config.num_hidden_layers)
        ])

    def forward(
        self,
        positions: torch.Tensor,
        hidden_states: torch.Tensor,
    ) -> torch.Tensor:
        for layer in self.layers:
            hidden_states = layer(positions, hidden_states)
        return hidden_states


class BertWithRope(nn.Module, SupportsV0Only, SupportsQuant):
    hf_to_vllm_mapper = WeightsMapper(orig_to_new_prefix={"model.": ""})

    def __init__(self, *, vllm_config: VllmConfig, prefix: str = ""):
        super().__init__()
        self.vllm_config = vllm_config
        self.config = self.config_verify(vllm_config)
        self.embeddings = BertWithRopeEmbedding(self.config)
        self.encoder = BertWithRopeEncoder(
            vllm_config=vllm_config,
            bias=getattr(self.config, "bias", True),
            rotary_kwargs=self.config.rotary_kwargs,
            prefix=f"{prefix}.encoder")

    def config_verify(self, vllm_config):
        raise NotImplementedError

    def forward(
        self,
        input_ids: Optional[torch.Tensor],
        positions: torch.Tensor,
        intermediate_tensors: Optional[IntermediateTensors] = None,
        inputs_embeds: Optional[torch.Tensor] = None,
        token_type_ids: Optional[torch.Tensor] = None,
    ) -> torch.Tensor:
        if inputs_embeds is not None:
            hidden_states = inputs_embeds
        else:
            hidden_states = self.embeddings(input_ids=input_ids,
                                            token_type_ids=token_type_ids)
        return self.encoder(positions, hidden_states)

    def load_weights(self, weights: Iterable[tuple[str,
                                                   torch.Tensor]]) -> set[str]:
        weights = self.hf_to_vllm_mapper.apply(weights)

        if self.config.hidden_act in ["silu", "geglu"]:
            stacked_params_mapping = [
                # (param_name, shard_name, shard_id)
                ("gate_up_proj", "gate_proj", 0),
                ("gate_up_proj", "up_proj", 1),
            ]
        else:
            stacked_params_mapping = []

        params_dict = dict(self.named_parameters())
        loaded_params: set[str] = set()
        for name, loaded_weight in weights:
            if "pooler" in name:
                continue
            for (param_name, weight_name, shard_id) in stacked_params_mapping:
                if weight_name not in name:
                    continue
                name = name.replace(weight_name, param_name)
                # Skip loading extra bias for GPTQ models.
                if name.endswith(".bias") and name not in params_dict:
                    continue
                param = params_dict[name]
                weight_loader = param.weight_loader
                weight_loader(param, loaded_weight, shard_id)
                break
            else:
                # Skip loading extra bias for GPTQ models.
                if name.endswith(".bias") and name not in params_dict:
                    continue
                param = params_dict[name]
                weight_loader = getattr(param, "weight_loader",
                                        default_weight_loader)
                weight_loader(param, loaded_weight)
            loaded_params.add(name)
        return loaded_params


class NomicBertModel(BertWithRope):
    # for https://huggingface.co/nomic-ai/nomic-bert-2048

    hf_to_vllm_mapper = WeightsMapper(
        orig_to_new_substr={
            "emb_ln": "embeddings.LayerNorm",
            "attn.Wqkv": "attn.qkv_proj",
            "norm1": "attn_ln",
            "mlp.fc1.": "mlp.up_proj.",
            "mlp.fc11": "mlp.up_proj",
            "mlp.fc12": "mlp.gate_proj",
            "mlp.fc2": "mlp.down_proj",
            "norm2": "mlp_ln",
        })

    def config_verify(self, vllm_config):
        config = vllm_config.model_config.hf_config

        assert config.__class__.__name__ == "NomicBertConfig"
        assert config.activation_function in ["swiglu", "gelu"]
        config.position_embedding_type = getattr(config,
                                                 "position_embedding_type",
                                                 "rope")

        if config.activation_function == "swiglu":
            config.hidden_act = "silu"
        else:
            config.hidden_act = config.activation_function

        assert (config.mlp_fc1_bias == config.mlp_fc2_bias ==
                config.qkv_proj_bias)
        config.bias = config.qkv_proj_bias

        assert config.rotary_emb_scale_base is None
        assert not config.rotary_emb_interleaved

        config.layer_norm_eps = config.layer_norm_epsilon
        config.intermediate_size = config.n_inner
        config.hidden_size = config.n_embd
        config.num_hidden_layers = config.n_layer

        head_dim = config.hidden_size // config.num_attention_heads
        rotary_emb_dim = head_dim * config.rotary_emb_fraction
        config.rotary_kwargs = {
            "head_size": head_dim,
            "rotary_dim": rotary_emb_dim,
            "max_position": config.max_trained_positions,
            "base": getattr(config, "rope_theta", config.rotary_emb_base),
            "rope_scaling": getattr(config, "rope_scaling", None)
        }

        # we ignore config.rotary_scaling_factor so that for datasets shorter
        # than max_trained_positions 2048, the results are consistent
        # with SentenceTransformer.
        # The context extension uses vllm style rope_theta and rope_scaling.
        # See #17785

        return config


class GteNewModel(BertWithRope):
    # for https://huggingface.co/Alibaba-NLP/new-impl

    hf_to_vllm_mapper = WeightsMapper(
        orig_to_new_substr={
            "new.": "",
            "layer": "layers",
            "attention.qkv_proj": "attn.qkv_proj",
            "attention.o_proj": "attn.out_proj",
        })

    def __init__(self, *, vllm_config: VllmConfig, prefix: str = ""):
        super().__init__(vllm_config=vllm_config, prefix=prefix)

        # GteNewModel only gate_up_proj does not have bias.
        # Hack method learned from vllm/model_executor/models/glm.py
        for layer in self.encoder.layers:
            layer.mlp.gate_up_proj.bias = None
            layer.mlp.gate_up_proj.skip_bias_add = True

    def config_verify(self, vllm_config):
        config = vllm_config.model_config.hf_config

        assert config.__class__.__name__ == "NewConfig"
        assert config.hidden_act == "gelu"

        config.hidden_act = "geglu"

        head_dim = config.hidden_size // config.num_attention_heads
        config.rotary_kwargs = {
            "head_size": head_dim,
            "rotary_dim": getattr(config, "rotary_emb_dim", head_dim),
            "max_position": config.max_position_embeddings,
            "base": config.rope_theta,
            "rope_scaling": getattr(config, "rope_scaling", None)
        }
        return config

    def split_up_gate_proj(self, weights: Iterable[tuple[str, torch.Tensor]]):
        n = "mlp.up_gate_proj"
        for name, weight in weights:
            if n in name:
                up, gate = weight.chunk(2, dim=0)
                yield name.replace(n, "mlp.up_proj"), up
                yield name.replace(n, "mlp.gate_proj"), gate
            else:
                yield name, weight

    def ignore_unnecessary_layers(self,
                                  weights: Iterable[tuple[str, torch.Tensor]]):
        for name, weight in weights:
            if name.startswith("classifier"):
                continue
            yield name, weight

    def load_weights(self, weights: Iterable[tuple[str,
                                                   torch.Tensor]]) -> set[str]:
        weights = self.ignore_unnecessary_layers(weights)
        weights = self.split_up_gate_proj(weights)
        return super().load_weights(weights)


class SnowflakeGteNewModel(GteNewModel):
    # for Snowflake/snowflake-arctic-embed-m-v2.0

    hf_to_vllm_mapper = WeightsMapper(
        orig_to_new_substr={
            "layer": "layers",
            "attention.qkv_proj": "attn.qkv_proj",
            "attention.o_proj": "attn.out_proj",
        })

    def config_verify(self, vllm_config):
        config = vllm_config.model_config.hf_config

        assert config.__class__.__name__ == "GteConfig"
        assert config.hidden_act == "gelu"

        config.hidden_act = "geglu"

        head_dim = config.hidden_size // config.num_attention_heads
        config.rotary_kwargs = {
            "head_size": head_dim,
            "rotary_dim": getattr(config, "rotary_emb_dim", head_dim),
            "max_position": config.max_position_embeddings,
            "base": config.rope_theta,
            "rope_scaling": getattr(config, "rope_scaling", None)
        }
        return config


class JinaRobertaModel(BertWithRope):
    # for https://huggingface.co/jinaai/jina-embeddings-v3

    hf_to_vllm_mapper = WeightsMapper(
        orig_to_new_substr={
            "emb_ln": "embeddings.LayerNorm",
            "mixer.Wqkv": "attn.qkv_proj",
            "mixer.out_proj": "attn.out_proj",
            "norm1": "attn_ln",
            "mlp.fc1.": "mlp.up_proj.",
            "mlp.fc2": "mlp.down_proj",
            "norm2": "mlp_ln",
        })

    def config_verify(self, vllm_config):
        config = vllm_config.model_config.hf_config

        assert config.__class__.__name__ == "XLMRobertaFlashConfig"

        head_dim = config.hidden_size // config.num_attention_heads
        config.rotary_kwargs = {
            "head_size": head_dim,
            "rotary_dim": getattr(config, "rotary_emb_dim", head_dim),
            "max_position": config.max_position_embeddings,
            "base": getattr(config, "rope_theta", config.rotary_emb_base),
            "rope_scaling": getattr(config, "rope_scaling", None)
        }
        return config

    def forward(
        self,
        input_ids: torch.Tensor,
        position_ids: torch.Tensor,
        intermediate_tensors: Optional[IntermediateTensors] = None,
        inputs_embeds: Optional[torch.Tensor] = None,
        token_type_ids: Optional[torch.Tensor] = None,
    ) -> torch.Tensor:
        return super().forward(input_ids=input_ids,
                               positions=position_ids,
                               intermediate_tensors=intermediate_tensors,
                               inputs_embeds=inputs_embeds,
                               token_type_ids=token_type_ids)

    @torch.inference_mode()
    def jina_merge_lora_weights(self, weights: Iterable[tuple[str,
                                                              torch.Tensor]]):
        # use for jina-embeddings-v3
        # Merge Lora weights into a single weight tensor.
        # This is a temporary solution until we have a better way to handle

        scaling = self.config.lora_alpha / self.config.lora_rank
        device = self.vllm_config.device_config.device

        weights = {name: weight for name, weight in weights}

        o = ".original"
        a = ".0.lora_A"
        b = ".0.lora_B"

        # text-matching
        i = -1

        for name in list(weights.keys()):
            if o in name:
                dtype = weights[name].dtype
                shape = weights[name].shape
                weight_name = name[:-len(o)]

                if "embeddings" in weight_name:
                    B = weights[weight_name + a][i].to(device).float()
                    A = weights[weight_name + b][i].to(device).float()
                else:
                    B = weights[weight_name + b][i].to(device).float()
                    A = weights[weight_name + a][i].to(device).float()

                weight = (weights[weight_name + o].to(device) +
                          torch.matmul(B, A).view(shape) * scaling)
                weight = weight.cpu().to(dtype)

                weights[weight_name.replace(".parametrizations", "")] = weight

                del weights[weight_name + o], weights[weight_name +
                                                      a], weights[weight_name +
                                                                  b]

        return [(name, weight) for name, weight in weights.items()]

    def load_weights(self, weights: Iterable[tuple[str,
                                                   torch.Tensor]]) -> set[str]:
        weights = self.jina_merge_lora_weights(weights)
        return super().load_weights(weights)