# Initially pulled from https://github.com/black-forest-labs/flux

import os
from dataclasses import dataclass

from invokeai.backend.flux.model import FluxParams
from invokeai.backend.flux.modules.autoencoder import AutoEncoderParams


@dataclass
class ModelSpec:
    params: FluxParams
    ae_params: AutoEncoderParams
    ckpt_path: str | None
    ae_path: str | None
    repo_id: str | None
    repo_flow: str | None
    repo_ae: str | None


configs = {
    "flux-dev": ModelSpec(
        repo_id="black-forest-labs/FLUX.1-dev",
        repo_flow="flux1-dev.safetensors",
        repo_ae="ae.safetensors",
        ckpt_path=os.getenv("FLUX_DEV"),
        params=FluxParams(
            in_channels=64,
            vec_in_dim=768,
            context_in_dim=4096,
            hidden_size=3072,
            mlp_ratio=4.0,
            num_heads=24,
            depth=19,
            depth_single_blocks=38,
            axes_dim=[16, 56, 56],
            theta=10_000,
            qkv_bias=True,
            guidance_embed=True,
        ),
        ae_path=os.getenv("AE"),
        ae_params=AutoEncoderParams(
            resolution=256,
            in_channels=3,
            ch=128,
            out_ch=3,
            ch_mult=[1, 2, 4, 4],
            num_res_blocks=2,
            z_channels=16,
            scale_factor=0.3611,
            shift_factor=0.1159,
        ),
    ),
    "flux-schnell": ModelSpec(
        repo_id="black-forest-labs/FLUX.1-schnell",
        repo_flow="flux1-schnell.safetensors",
        repo_ae="ae.safetensors",
        ckpt_path=os.getenv("FLUX_SCHNELL"),
        params=FluxParams(
            in_channels=64,
            vec_in_dim=768,
            context_in_dim=4096,
            hidden_size=3072,
            mlp_ratio=4.0,
            num_heads=24,
            depth=19,
            depth_single_blocks=38,
            axes_dim=[16, 56, 56],
            theta=10_000,
            qkv_bias=True,
            guidance_embed=False,
        ),
        ae_path=os.getenv("AE"),
        ae_params=AutoEncoderParams(
            resolution=256,
            in_channels=3,
            ch=128,
            out_ch=3,
            ch_mult=[1, 2, 4, 4],
            num_res_blocks=2,
            z_channels=16,
            scale_factor=0.3611,
            shift_factor=0.1159,
        ),
    ),
}