import torch.nn as nn

class TumorClassification(nn.Module):
    def __init__(self):
        super().__init__()
        self.model = nn.Sequential(
            nn.Conv2d(1, 32, 3, 1, 1),      # con1d
            nn.ReLU(),
            nn.MaxPool2d(2),

            nn.Conv2d(32, 64, 3, 1, 1),     # con2d
            nn.ReLU(),
            nn.MaxPool2d(2),

            nn.Conv2d(64, 128, 3, 1, 1),    # con3d
            nn.ReLU(),
            nn.MaxPool2d(2),

            nn.Flatten(),
            nn.Linear(128 * 26 * 26, 512),  # 128×26×26 = 86528
            nn.ReLU(),
            nn.Linear(512, 4)               # 4 classes
        )

    def forward(self, x):
        return self.model(x)

class GliomaStageModel(nn.Module):
    def __init__(self):
        super().__init__()
        self.fc1 = nn.Linear(9, 100)
        self.fc2 = nn.Linear(100, 50)
        self.fc3 = nn.Linear(50, 30)
        self.out = nn.Linear(30, 4)  # 4 stages

    def forward(self, x):
        x = nn.functional.relu(self.fc1(x))
        x = nn.functional.relu(self.fc2(x))
        x = nn.functional.relu(self.fc3(x))
        return self.out(x)