import torch
import torch.nn as nn
from model import ActionClassificationModel
from dataset import CustomImageFolder
from torchvision.transforms import transforms

# 1. Define data preprocessing
test_transforms = transforms.Compose([
    transforms.Resize((112, 112)),
    transforms.ToTensor(),
    transforms.Normalize([0.485, 0.456, 0.406], [0.229, 0.224, 0.225])
])

# 2. Load test dataset
test_dataset = CustomImageFolder("dataset/val", transform=test_transforms)
test_loader = torch.utils.data.DataLoader(
    test_dataset, batch_size=4, shuffle=False, num_workers=0
)

# 3. Load the saved model
model = ActionClassificationModel()
model.load_state_dict(torch.load("model_epoch_10.pth"))  # Replace with your desired checkpoint file

# 4. Test the model on the test dataset
correct = 0
total = 0
with torch.no_grad():
    for data in test_loader:
        inputs, labels = data
        outputs = model(inputs)
        _, predicted = torch.max(outputs.data, 1)
        total += labels.size(0)
        correct += (predicted == labels).sum().item()

accuracy = 100 * correct / total
print('Accuracy of the network on the test images: %d %%' % accuracy)