import torch
from torchvision.models import EfficientNet_B2_Weights, efficientnet_b2
from torch import nn

def  create_effnet_b2(num_classes:int = 3, seed:int = 42):

    eff_weights = EfficientNet_B2_Weights.DEFAULT
    efficientnet_transform = eff_weights.transforms()

    effnet_model = efficientnet_b2(eff_weights)
    
    
    for params in effnet_model.parameters():
        params.requires_grad = False
        
    torch.manual_seed(seed=seed)
     
    effnet_model.classifier = nn.Sequential(
            nn.Dropout(p=0.3, inplace=True),
            nn.Linear(in_features=1408, out_features=num_classes, bias=True)
    )   
    
        
    return effnet_model, efficientnet_transform