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3DModelGeneration_PointCloud
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from typing import Any, Dict

import torch
import torch.nn as nn

from .sdf import CrossAttentionPointCloudSDFModel
from .transformer import (
    CLIPImageGridPointDiffusionTransformer,
    CLIPImageGridUpsamplePointDiffusionTransformer,
    CLIPImagePointDiffusionTransformer,
    PointDiffusionTransformer,
    UpsamplePointDiffusionTransformer,
)

MODEL_CONFIGS = {
    "base40M-imagevec": {
        "cond_drop_prob": 0.1,
        "heads": 8,
        "init_scale": 0.25,
        "input_channels": 6,
        "layers": 12,
        "n_ctx": 1024,
        "name": "CLIPImagePointDiffusionTransformer",
        "output_channels": 12,
        "time_token_cond": True,
        "token_cond": True,
        "width": 512,
    },
    "base40M-textvec": {
        "cond_drop_prob": 0.1,
        "heads": 8,
        "init_scale": 0.25,
        "input_channels": 6,
        "layers": 12,
        "n_ctx": 1024,
        "name": "CLIPImagePointDiffusionTransformer",
        "output_channels": 12,
        "time_token_cond": True,
        "token_cond": True,
        "width": 512,
    },
    "base40M-uncond": {
        "heads": 8,
        "init_scale": 0.25,
        "input_channels": 6,
        "layers": 12,
        "n_ctx": 1024,
        "name": "PointDiffusionTransformer",
        "output_channels": 12,
        "time_token_cond": True,
        "width": 512,
    },
    "base40M": {
        "cond_drop_prob": 0.1,
        "heads": 8,
        "init_scale": 0.25,
        "input_channels": 6,
        "layers": 12,
        "n_ctx": 1024,
        "name": "CLIPImageGridPointDiffusionTransformer",
        "output_channels": 12,
        "time_token_cond": True,
        "width": 512,
    },
    "base300M": {
        "cond_drop_prob": 0.1,
        "heads": 16,
        "init_scale": 0.25,
        "input_channels": 6,
        "layers": 24,
        "n_ctx": 1024,
        "name": "CLIPImageGridPointDiffusionTransformer",
        "output_channels": 12,
        "time_token_cond": True,
        "width": 1024,
    },
    "base1B": {
        "cond_drop_prob": 0.1,
        "heads": 32,
        "init_scale": 0.25,
        "input_channels": 6,
        "layers": 24,
        "n_ctx": 1024,
        "name": "CLIPImageGridPointDiffusionTransformer",
        "output_channels": 12,
        "time_token_cond": True,
        "width": 2048,
    },
    "upsample": {
        "channel_biases": [0.0, 0.0, 0.0, -1.0, -1.0, -1.0],
        "channel_scales": [2.0, 2.0, 2.0, 0.007843137255, 0.007843137255, 0.007843137255],
        "cond_ctx": 1024,
        "cond_drop_prob": 0.1,
        "heads": 8,
        "init_scale": 0.25,
        "input_channels": 6,
        "layers": 12,
        "n_ctx": 3072,
        "name": "CLIPImageGridUpsamplePointDiffusionTransformer",
        "output_channels": 12,
        "time_token_cond": True,
        "width": 512,
    },
    "sdf": {
        "decoder_heads": 4,
        "decoder_layers": 4,
        "encoder_heads": 4,
        "encoder_layers": 8,
        "init_scale": 0.25,
        "n_ctx": 4096,
        "name": "CrossAttentionPointCloudSDFModel",
        "width": 256,
    },
}


def model_from_config(config: Dict[str, Any], device: torch.device) -> nn.Module:
    config = config.copy()
    name = config.pop("name")
    if name == "PointDiffusionTransformer":
        return PointDiffusionTransformer(device=device, dtype=torch.float32, **config)
    elif name == "CLIPImagePointDiffusionTransformer":
        return CLIPImagePointDiffusionTransformer(device=device, dtype=torch.float32, **config)
    elif name == "CLIPImageGridPointDiffusionTransformer":
        return CLIPImageGridPointDiffusionTransformer(device=device, dtype=torch.float32, **config)
    elif name == "UpsamplePointDiffusionTransformer":
        return UpsamplePointDiffusionTransformer(device=device, dtype=torch.float32, **config)
    elif name == "CLIPImageGridUpsamplePointDiffusionTransformer":
        return CLIPImageGridUpsamplePointDiffusionTransformer(
            device=device, dtype=torch.float32, **config
        )
    elif name == "CrossAttentionPointCloudSDFModel":
        return CrossAttentionPointCloudSDFModel(device=device, dtype=torch.float32, **config)
    raise ValueError(f"unknown model name: {name}")