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LAUNCHER - CASCADE.bat

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+@echo off
+CALL env\Scripts\activate
+python app.py --inbrowser
+
+REM List of possible arguments
+
+REM			--inbrowser    		Automatically open the url in browser, if --share is used, the public url will be automatically open instead
+REM			--server_port    	Choose a specific server port, default=7860 (example --server_port 420    so the local url will be:  http://127.0.0.1:420)
+REM			--share				Creates a public URL

README.md

@@ -1,3 +1,20 @@
+--inbrowser Automatically open the url in browser, if --share is used, the public url will be automatically open instead
+
+--server_port Choose a specific server port, default=7860 (example --server_port 420 so the local url will be: http://127.0.0.1:420)
+
+--share Creates a public URL
+
 ---
-license: unknown
+title: Stable Cascade
+emoji: 👁
+colorFrom: blue
+colorTo: purple
+sdk: gradio
+sdk_version: 4.18.0
+app_file: app.py
+pinned: false
+license: mit
+hf_oauth: true
 ---
+
+Check out the configuration reference at https://huggingface.co/docs/hub/spaces-config-reference

app.py

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+import os
+import random
+import gradio as gr
+import numpy as np
+import PIL.Image
+import torch
+import argparse
+from typing import List
+from diffusers.utils import numpy_to_pil
+from diffusers import StableCascadeDecoderPipeline, StableCascadePriorPipeline
+from diffusers.pipelines.wuerstchen import DEFAULT_STAGE_C_TIMESTEPS
+from previewer.modules import Previewer
+
+os.environ['TOKENIZERS_PARALLELISM'] = 'false'
+
+DESCRIPTION = "# Stable Cascade"
+DESCRIPTION += "\n<p style=\"text-align: center\">Неофициальная демонстрация Stable Cascade от <a href='https://www.youtube.com/@nerual_dreming/' target='_blank'>Nerual Dreming и нейросети</a> основано на <a href='https://huggingface.co/stabilityai/stable-cascade' target='_blank'>Stable Cascade</a>, новая модель высокого разрешения для генерации изображений по текстовому запросу от Stability AI, основанная на архитектуре Würstchen - <a href='https://huggingface.co/stabilityai/stable-cascade/blob/main/LICENSE' target='_blank'>только для некоммерческого и научного использования</a></p>"
+
+MAX_SEED = np.iinfo(np.int32).max
+CACHE_EXAMPLES = False
+MAX_IMAGE_SIZE = int(os.getenv("MAX_IMAGE_SIZE", "1536"))
+USE_TORCH_COMPILE = False
+ENABLE_CPU_OFFLOAD = os.getenv("ENABLE_CPU_OFFLOAD") == "1"
+PREVIEW_IMAGES = True
+
+parser = argparse.ArgumentParser(description='Gradio App Control')
+parser.add_argument('--share', action='store_true', help='Create a public shareable URL')
+parser.add_argument('--inbrowser', action='store_true', help='Automatically launch the application in a browser')
+parser.add_argument('--server_port', type=int, default=7860, help='Server port')
+args = parser.parse_args()
+
+dtype = torch.bfloat16
+if torch.cuda.is_available():
+  device = "cuda"
+elif torch.backends.mps.is_available():
+  device = "mps"
+  dtype = torch.float32
+else:
+  device = "cpu"
+print(f"device={device}")
+if device != "cpu":
+    prior_pipeline = StableCascadePriorPipeline.from_pretrained("stabilityai/stable-cascade-prior", torch_dtype=dtype)#.to(device)
+    decoder_pipeline = StableCascadeDecoderPipeline.from_pretrained("stabilityai/stable-cascade",  torch_dtype=dtype)#.to(device) 
+
+    if ENABLE_CPU_OFFLOAD:
+        prior_pipeline.enable_model_cpu_offload()
+        decoder_pipeline.enable_model_cpu_offload()
+    else:
+        prior_pipeline.to(device)
+        decoder_pipeline.to(device)
+
+    if USE_TORCH_COMPILE:
+        prior_pipeline.prior = torch.compile(prior_pipeline.prior, mode="reduce-overhead", fullgraph=True)
+        decoder_pipeline.decoder = torch.compile(decoder_pipeline.decoder, mode="max-autotune", fullgraph=True)
+    
+    if PREVIEW_IMAGES:
+        previewer = Previewer()
+        previewer_state_dict = torch.load("previewer/previewer_v1_100k.pt", map_location=torch.device('cpu'))["state_dict"]
+        previewer.load_state_dict(previewer_state_dict)
+        def callback_prior(i, t, latents):
+            output = previewer(latents)
+            output = numpy_to_pil(output.clamp(0, 1).permute(0, 2, 3, 1).float().cpu().numpy())
+            return output
+        callback_steps = 1
+    else:
+        previewer = None
+        callback_prior = None
+        callback_steps = None
+else:
+    prior_pipeline = None
+    decoder_pipeline = None
+
+
+def randomize_seed_fn(seed: int, randomize_seed: bool) -> int:
+    if randomize_seed:
+        seed = random.randint(0, MAX_SEED)
+    return seed
+
+def generate(
+    prompt: str,
+    negative_prompt: str = "",
+    seed: int = 0,
+    width: int = 1024,
+    height: int = 1024,
+    prior_num_inference_steps: int = 30,
+    # prior_timesteps: List[float] = None,
+    prior_guidance_scale: float = 4.0,
+    decoder_num_inference_steps: int = 12,
+    # decoder_timesteps: List[float] = None,
+    decoder_guidance_scale: float = 0.0,
+    num_images_per_prompt: int = 2,
+#    profile: gr.OAuthProfile | None = None,
+) -> PIL.Image.Image:
+    previewer.eval().requires_grad_(False).to(device).to(dtype)
+    prior_pipeline.to(device)
+    decoder_pipeline.to(device)
+    
+    generator = torch.Generator().manual_seed(seed)
+    prior_output = prior_pipeline(
+        prompt=prompt,
+        height=height,
+        width=width,
+        num_inference_steps=prior_num_inference_steps,
+        timesteps=DEFAULT_STAGE_C_TIMESTEPS,
+        negative_prompt=negative_prompt,
+        guidance_scale=prior_guidance_scale,
+        num_images_per_prompt=num_images_per_prompt,
+        generator=generator,
+        callback=callback_prior,
+        callback_steps=callback_steps
+    )
+
+    if PREVIEW_IMAGES:
+        for _ in range(len(DEFAULT_STAGE_C_TIMESTEPS)):
+            r = next(prior_output)
+            if isinstance(r, list):
+                yield r[0]
+        prior_output = r
+
+    decoder_output = decoder_pipeline(
+        image_embeddings=prior_output.image_embeddings,
+        prompt=prompt,
+        num_inference_steps=decoder_num_inference_steps,
+        # timesteps=decoder_timesteps,
+        guidance_scale=decoder_guidance_scale,
+        negative_prompt=negative_prompt,
+        generator=generator,
+        output_type="pil",
+    ).images
+
+    yield decoder_output[0]
+
+
+examples = [
+    "An astronaut riding a green horse",
+    "A mecha robot in a favela by Tarsila do Amaral",
+    "The sprirt of a Tamagotchi wandering in the city of Los Angeles",
+    "A delicious feijoada ramen dish"
+]
+
+with gr.Blocks() as demo:
+    gr.Markdown(DESCRIPTION)
+    gr.DuplicateButton(
+        value="Duplicate Space for private use",
+        elem_id="duplicate-button",
+        visible=os.getenv("SHOW_DUPLICATE_BUTTON") == "1",
+    )
+    with gr.Group():
+        with gr.Row():
+            prompt = gr.Text(
+                label="Prompt",
+                show_label=False,
+                max_lines=1,
+                placeholder="Введите запрос",
+                container=False,
+            )
+            run_button = gr.Button("Создать", scale=0)
+        result = gr.Image(label="Result", show_label=False)
+    with gr.Accordion("Дополнительные опции", open=False):
+        negative_prompt = gr.Text(
+            label="Негативный запорос",
+            max_lines=1,
+            placeholder="Введите негативный запрос",
+        )
+
+        seed = gr.Slider(
+            label="Seed",
+            minimum=0,
+            maximum=MAX_SEED,
+            step=1,
+            value=0,
+        )
+        randomize_seed = gr.Checkbox(label="Случайный seed", value=True)
+        with gr.Row():
+            width = gr.Slider(
+                label="Ширина",
+                minimum=1024,
+                maximum=MAX_IMAGE_SIZE,
+                step=512,
+                value=1024,
+            )
+            height = gr.Slider(
+                label="Высота",
+                minimum=1024,
+                maximum=MAX_IMAGE_SIZE,
+                step=512,
+                value=1024,
+            )
+            num_images_per_prompt = gr.Slider(
+                label="Количество изображений",
+                minimum=1,
+                maximum=2,
+                step=1,
+                value=1,
+            )
+        with gr.Row():
+            prior_guidance_scale = gr.Slider(
+                label="Prior Guidance Scale",
+                minimum=0,
+                maximum=20,
+                step=0.1,
+                value=4.0,
+            )
+            prior_num_inference_steps = gr.Slider(
+                label="Prior Inference Steps",
+                minimum=10,
+                maximum=30,
+                step=1,
+                value=20,
+            )
+
+            decoder_guidance_scale = gr.Slider(
+                label="Decoder Guidance Scale",
+                minimum=0,
+                maximum=0,
+                step=0.1,
+                value=0.0,
+            )
+            decoder_num_inference_steps = gr.Slider(
+                label="Decoder Inference Steps",
+                minimum=4,
+                maximum=12,
+                step=1,
+                value=10,
+            )
+
+    gr.Examples(
+        examples=examples,
+        inputs=prompt,
+        outputs=result,
+        fn=generate,
+        cache_examples=CACHE_EXAMPLES,
+    )
+
+    inputs = [
+            prompt,
+            negative_prompt,
+            seed,
+            width,
+            height,
+            prior_num_inference_steps,
+            # prior_timesteps,
+            prior_guidance_scale,
+            decoder_num_inference_steps,
+            # decoder_timesteps,
+            decoder_guidance_scale,
+            num_images_per_prompt,
+    ]
+    gr.on(
+        triggers=[prompt.submit, negative_prompt.submit, run_button.click],
+        fn=randomize_seed_fn,
+        inputs=[seed, randomize_seed],
+        outputs=seed,
+        queue=False,
+        api_name=False,
+    ).then(
+        fn=generate,
+        inputs=inputs,
+        outputs=result,
+        api_name="run",
+    )
+    
+with gr.Blocks(css="style.css") as demo_with_history:
+    with gr.Tab("App"):
+        demo.render()
+
+if __name__ == "__main__":
+    launch_args = {
+        'inbrowser': args.inbrowser,
+        'share': args.share,
+        'server_port' : args.server_port,
+    }
+    demo_with_history.launch(**launch_args)

previewer/modules.py

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+from torch import nn
+
+
+# Fast Decoder for Stage C latents. E.g. 16 x 24 x 24 -> 3 x 192 x 192
+class Previewer(nn.Module):
+    def __init__(self, c_in=16, c_hidden=512, c_out=3):
+        super().__init__()
+        self.blocks = nn.Sequential(
+            nn.Conv2d(c_in, c_hidden, kernel_size=1),  # 16 channels to 512 channels
+            nn.GELU(),
+            nn.BatchNorm2d(c_hidden),
+
+            nn.Conv2d(c_hidden, c_hidden, kernel_size=3, padding=1),
+            nn.GELU(),
+            nn.BatchNorm2d(c_hidden),
+
+            nn.ConvTranspose2d(c_hidden, c_hidden // 2, kernel_size=2, stride=2),  # 16 -> 32
+            nn.GELU(),
+            nn.BatchNorm2d(c_hidden // 2),
+
+            nn.Conv2d(c_hidden // 2, c_hidden // 2, kernel_size=3, padding=1),
+            nn.GELU(),
+            nn.BatchNorm2d(c_hidden // 2),
+
+            nn.ConvTranspose2d(c_hidden // 2, c_hidden // 4, kernel_size=2, stride=2),  # 32 -> 64
+            nn.GELU(),
+            nn.BatchNorm2d(c_hidden // 4),
+
+            nn.Conv2d(c_hidden // 4, c_hidden // 4, kernel_size=3, padding=1),
+            nn.GELU(),
+            nn.BatchNorm2d(c_hidden // 4),
+
+            nn.ConvTranspose2d(c_hidden // 4, c_hidden // 4, kernel_size=2, stride=2),  # 64 -> 128
+            nn.GELU(),
+            nn.BatchNorm2d(c_hidden // 4),
+
+            nn.Conv2d(c_hidden // 4, c_hidden // 4, kernel_size=3, padding=1),
+            nn.GELU(),
+            nn.BatchNorm2d(c_hidden // 4),
+
+            nn.Conv2d(c_hidden // 4, c_out, kernel_size=1),
+        )
+
+    def forward(self, x):
+        return self.blocks(x)

previewer/previewer_v1_100k.pt

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+version https://git-lfs.github.com/spec/v1
+oid sha256:14a141d7156cf41bd32d6b68e2fc4d2cedb02db1697f862d52458670eb788958
+size 47820715

previewer/text2img_wurstchen_b_v1_previewer_100k.pt

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+version https://git-lfs.github.com/spec/v1
+oid sha256:76e82483253b24430b20e3e0c98ec2f9aeb45f0b487f7b330bac044b5de0d6f7
+size 45244773

requirements.txt

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+git+https://github.com/kashif/diffusers.git@diffusers-yield-callback
+accelerate
+safetensors
+transformers

style.css

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+h1 {
+  text-align: center;
+  justify-content: center; 
+}
+[role="tabpanel"]{border: 0}
+#duplicate-button {
+  margin: auto;
+  color: #fff;
+  background: #1565c0;
+  border-radius: 100vh;
+}
+
+.gradio-container {
+  max-width: 690px! important;
+}
+
+#share-btn-container{padding-left: 0.5rem !important; padding-right: 0.5rem !important; background-color: #000000; justify-content: center; align-items: center; border-radius: 9999px !important; max-width: 13rem; margin-left: auto;margin-top: 0.35em;}
+div#share-btn-container > div {flex-direction: row;background: black;align-items: center}
+#share-btn-container:hover {background-color: #060606}
+#share-btn {all: initial; color: #ffffff;font-weight: 600; cursor:pointer; font-family: 'IBM Plex Sans', sans-serif; margin-left: 0.5rem !important; padding-top: 0.5rem !important; padding-bottom: 0.5rem !important;right:0;font-size: 15px;}
+#share-btn * {all: unset}
+#share-btn-container div:nth-child(-n+2){width: auto !important;min-height: 0px !important;}
+#share-btn-container .wrap {display: none !important}
+#share-btn-container.hidden {display: none!important}

user_history.py

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+"""
+User History is a plugin that you can add to your Spaces to cache generated images for your users.
+
+Key features:
+- 🤗 Sign in with Hugging Face
+- Save generated images with their metadata: prompts, timestamp, hyper-parameters, etc.
+- Export your history as zip.
+- Delete your history to respect privacy.
+- Compatible with Persistent Storage for long-term storage.
+- Admin panel to check configuration and disk usage .
+
+Useful links:
+- Demo: https://huggingface.co/spaces/Wauplin/gradio-user-history
+- README: https://huggingface.co/spaces/Wauplin/gradio-user-history/blob/main/README.md
+- Source file: https://huggingface.co/spaces/Wauplin/gradio-user-history/blob/main/user_history.py
+- Discussions: https://huggingface.co/spaces/Wauplin/gradio-user-history/discussions
+"""
+import json
+import os
+import shutil
+import warnings
+from datetime import datetime
+from functools import cache
+from pathlib import Path
+from typing import Callable, Dict, List, Tuple
+from uuid import uuid4
+
+import gradio as gr
+import numpy as np
+import requests
+from filelock import FileLock
+from PIL.Image import Image
+
+
+def setup(folder_path: str | Path | None = None) -> None:
+    user_history = _UserHistory()
+    user_history.folder_path = _resolve_folder_path(folder_path)
+    user_history.initialized = True
+
+
+def render() -> None:
+    user_history = _UserHistory()
+
+    # initialize with default config
+    if not user_history.initialized:
+        print("Initializing user history with default config. Use `user_history.setup(...)` to customize folder_path.")
+        setup()
+
+    # Render user history tab
+    gr.Markdown(
+        "## Your past generations\n\nLog in to keep a gallery of your previous generations. Your history will be saved"
+        " and available on your next visit. Make sure to export your images from time to time as this gallery may be"
+        " deleted in the future."
+    )
+
+    if os.getenv("SYSTEM") == "spaces" and not os.path.exists("/data"):
+        gr.Markdown(
+            "**⚠️ Persistent storage is disabled, meaning your history will be lost if the Space gets restarted."
+            " Only the Space owner can setup a Persistent Storage. If you are not the Space owner, consider"
+            " duplicating this Space to set your own storage.⚠️**"
+        )
+
+    with gr.Row():
+        gr.LoginButton(min_width=250)
+        #gr.LogoutButton(min_width=250)
+        refresh_button = gr.Button(
+            "Refresh",
+            icon="https://huggingface.co/spaces/Wauplin/gradio-user-history/resolve/main/assets/icon_refresh.png",
+        )
+        export_button = gr.Button(
+            "Export",
+            icon="https://huggingface.co/spaces/Wauplin/gradio-user-history/resolve/main/assets/icon_download.png",
+        )
+        delete_button = gr.Button(
+            "Delete history",
+            icon="https://huggingface.co/spaces/Wauplin/gradio-user-history/resolve/main/assets/icon_delete.png",
+        )
+
+    # "Export zip" row (hidden by default)
+    with gr.Row():
+        export_file = gr.File(file_count="single", file_types=[".zip"], label="Exported history", visible=False)
+
+    # "Config deletion" row (hidden by default)
+    with gr.Row():
+        confirm_button = gr.Button("Confirm delete all history", variant="stop", visible=False)
+        cancel_button = gr.Button("Cancel", visible=False)
+
+    # Gallery
+    gallery = gr.Gallery(
+        label="Past images",
+        show_label=True,
+        elem_id="gallery",
+        object_fit="contain",
+        columns=5,
+        height=600,
+        preview=False,
+        show_share_button=False,
+        show_download_button=False,
+    )
+    gr.Markdown(
+        "User history is powered by"
+        " [Wauplin/gradio-user-history](https://huggingface.co/spaces/Wauplin/gradio-user-history). Integrate it to"
+        " your own Space in just a few lines of code!"
+    )
+    gallery.attach_load_event(_fetch_user_history, every=None)
+
+    # Interactions
+    refresh_button.click(fn=_fetch_user_history, inputs=[], outputs=[gallery], queue=False)
+    export_button.click(fn=_export_user_history, inputs=[], outputs=[export_file], queue=False)
+
+    # Taken from https://github.com/gradio-app/gradio/issues/3324#issuecomment-1446382045
+    delete_button.click(
+        lambda: [gr.update(visible=True), gr.update(visible=True)],
+        outputs=[confirm_button, cancel_button],
+        queue=False,
+    )
+    cancel_button.click(
+        lambda: [gr.update(visible=False), gr.update(visible=False)],
+        outputs=[confirm_button, cancel_button],
+        queue=False,
+    )
+    confirm_button.click(_delete_user_history).then(
+        lambda: [gr.update(visible=False), gr.update(visible=False)],
+        outputs=[confirm_button, cancel_button],
+        queue=False,
+    )
+
+    # Admin section (only shown locally or when logged in as Space owner)
+    _admin_section()
+
+
+def save_image(
+    profile: gr.OAuthProfile | None,
+    image: Image | np.ndarray | str | Path,
+    label: str | None = None,
+    metadata: Dict | None = None,
+):
+    # Ignore images from logged out users
+    if profile is None:
+        return
+    username = profile["preferred_username"]
+
+    # Ignore images if user history not used
+    user_history = _UserHistory()
+    if not user_history.initialized:
+        warnings.warn(
+            "User history is not set in Gradio demo. Saving image is ignored. You must use `user_history.render(...)`"
+            " first."
+        )
+        return
+
+    # Copy image to storage
+    image_path = _copy_image(image, dst_folder=user_history._user_images_path(username))
+
+    # Save new image + metadata
+    if metadata is None:
+        metadata = {}
+    if "datetime" not in metadata:
+        metadata["datetime"] = str(datetime.now())
+    data = {"path": str(image_path), "label": label, "metadata": metadata}
+    with user_history._user_lock(username):
+        with user_history._user_jsonl_path(username).open("a") as f:
+            f.write(json.dumps(data) + "\n")
+
+
+#############
+# Internals #
+#############
+
+
+class _UserHistory(object):
+    _instance = None
+    initialized: bool = False
+    folder_path: Path
+
+    def __new__(cls):
+        # Using singleton pattern => we don't want to expose an object (more complex to use) but still want to keep
+        # state between `render` and `save_image` calls.
+        if cls._instance is None:
+            cls._instance = super(_UserHistory, cls).__new__(cls)
+        return cls._instance
+
+    def _user_path(self, username: str) -> Path:
+        path = self.folder_path / username
+        path.mkdir(parents=True, exist_ok=True)
+        return path
+
+    def _user_lock(self, username: str) -> FileLock:
+        """Ensure history is not corrupted if concurrent calls."""
+        return FileLock(self.folder_path / f"{username}.lock")  # lock outside of folder => better when exporting ZIP
+
+    def _user_jsonl_path(self, username: str) -> Path:
+        return self._user_path(username) / "history.jsonl"
+
+    def _user_images_path(self, username: str) -> Path:
+        path = self._user_path(username) / "images"
+        path.mkdir(parents=True, exist_ok=True)
+        return path
+
+
+def _fetch_user_history(profile: gr.OAuthProfile | None) -> List[Tuple[str, str]]:
+    """Return saved history for that user, if it exists."""
+    # Cannot load history for logged out users
+    if profile is None:
+        return []
+    username = profile["preferred_username"]
+
+    user_history = _UserHistory()
+    if not user_history.initialized:
+        warnings.warn("User history is not set in Gradio demo. You must use `user_history.render(...)` first.")
+        return []
+
+    with user_history._user_lock(username):
+        # No file => no history saved yet
+        jsonl_path = user_history._user_jsonl_path(username)
+        if not jsonl_path.is_file():
+            return []
+
+        # Read history
+        images = []
+        for line in jsonl_path.read_text().splitlines():
+            data = json.loads(line)
+            images.append((data["path"], data["label"] or ""))
+        return list(reversed(images))
+
+
+def _export_user_history(profile: gr.OAuthProfile | None) -> Dict | None:
+    """Zip all history for that user, if it exists and return it as a downloadable file."""
+    # Cannot load history for logged out users
+    if profile is None:
+        return None
+    username = profile["preferred_username"]
+
+    user_history = _UserHistory()
+    if not user_history.initialized:
+        warnings.warn("User history is not set in Gradio demo. You must use `user_history.render(...)` first.")
+        return None
+
+    # Zip history
+    with user_history._user_lock(username):
+        path = shutil.make_archive(
+            str(_archives_path() / f"history_{username}"), "zip", user_history._user_path(username)
+        )
+
+    return gr.update(visible=True, value=path)
+
+
+def _delete_user_history(profile: gr.OAuthProfile | None) -> None:
+    """Delete all history for that user."""
+    # Cannot load history for logged out users
+    if profile is None:
+        return
+    username = profile["preferred_username"]
+
+    user_history = _UserHistory()
+    if not user_history.initialized:
+        warnings.warn("User history is not set in Gradio demo. You must use `user_history.render(...)` first.")
+        return
+
+    with user_history._user_lock(username):
+        shutil.rmtree(user_history._user_path(username))
+
+
+####################
+# Internal helpers #
+####################
+
+
+def _copy_image(image: Image | np.ndarray | str | Path, dst_folder: Path) -> Path:
+    """Copy image to the images folder."""
+    # Already a path => copy it
+    if isinstance(image, str):
+        image = Path(image)
+    if isinstance(image, Path):
+        dst = dst_folder / f"{uuid4().hex}_{Path(image).name}"  # keep file ext
+        shutil.copyfile(image, dst)
+        return dst
+
+    # Still a Python object => serialize it
+    if isinstance(image, np.ndarray):
+        image = Image.fromarray(image)
+    if isinstance(image, Image):
+        dst = dst_folder / f"{uuid4().hex}.png"
+        image.save(dst)
+        return dst
+
+    raise ValueError(f"Unsupported image type: {type(image)}")
+
+
+def _resolve_folder_path(folder_path: str | Path | None) -> Path:
+    if folder_path is not None:
+        return Path(folder_path).expanduser().resolve()
+
+    if os.getenv("SYSTEM") == "spaces" and os.path.exists("/data"):  # Persistent storage is enabled!
+        return Path("/data") / "_user_history"
+
+    # Not in a Space or Persistent storage not enabled => local folder
+    return Path(__file__).parent / "_user_history"
+
+
+def _archives_path() -> Path:
+    # Doesn't have to be on persistent storage as it's only used for download
+    path = Path(__file__).parent / "_user_history_exports"
+    path.mkdir(parents=True, exist_ok=True)
+    return path
+
+
+#################
+# Admin section #
+#################
+
+
+def _admin_section() -> None:
+    title = gr.Markdown()
+    title.attach_load_event(_display_if_admin(), every=None)
+
+
+def _display_if_admin() -> Callable:
+    def _inner(profile: gr.OAuthProfile | None) -> str:
+        if profile is None:
+            return ""
+        if profile["preferred_username"] in _fetch_admins():
+            return _admin_content()
+        return ""
+
+    return _inner
+
+
+def _admin_content() -> str:
+    return f"""
+## Admin section
+
+Running on **{os.getenv("SYSTEM", "local")}** (id: {os.getenv("SPACE_ID")}). {_get_msg_is_persistent_storage_enabled()}
+
+Admins: {', '.join(_fetch_admins())}
+
+{_get_nb_users()} user(s), {_get_nb_images()} image(s)
+
+### Configuration
+
+History folder: *{_UserHistory().folder_path}*
+
+Exports folder: *{_archives_path()}*
+
+### Disk usage
+
+{_disk_space_warning_message()}
+"""
+
+
+def _get_nb_users() -> int:
+    user_history = _UserHistory()
+    if not user_history.initialized:
+        return 0
+    if user_history.folder_path is not None and user_history.folder_path.exists():
+        return len([path for path in user_history.folder_path.iterdir() if path.is_dir()])
+    return 0
+
+
+def _get_nb_images() -> int:
+    user_history = _UserHistory()
+    if not user_history.initialized:
+        return 0
+    if user_history.folder_path is not None and user_history.folder_path.exists():
+        return len([path for path in user_history.folder_path.glob("*/images/*")])
+    return 0
+
+
+def _get_msg_is_persistent_storage_enabled() -> str:
+    if os.getenv("SYSTEM") == "spaces":
+        if os.path.exists("/data"):
+            return "Persistent storage is enabled."
+        else:
+            return (
+                "Persistent storage is not enabled. This means that user histories will be deleted when the Space is"
+                " restarted. Consider adding a Persistent Storage in your Space settings."
+            )
+    return ""
+
+
+def _disk_space_warning_message() -> str:
+    user_history = _UserHistory()
+    if not user_history.initialized:
+        return ""
+
+    message = ""
+    if user_history.folder_path is not None:
+        total, used, _ = _get_disk_usage(user_history.folder_path)
+        message += f"History folder: **{used / 1e9 :.0f}/{total / 1e9 :.0f}GB** used ({100*used/total :.0f}%)."
+
+    total, used, _ = _get_disk_usage(_archives_path())
+    message += f"\n\nExports folder: **{used / 1e9 :.0f}/{total / 1e9 :.0f}GB** used ({100*used/total :.0f}%)."
+
+    return f"{message.strip()}"
+
+
+def _get_disk_usage(path: Path) -> Tuple[int, int, int]:
+    for path in [path] + list(path.parents):  # first check target_dir, then each parents one by one
+        try:
+            return shutil.disk_usage(path)
+        except OSError:  # if doesn't exist or can't read => fail silently and try parent one
+            pass
+    return 0, 0, 0
+
+
+@cache
+def _fetch_admins() -> List[str]:
+    # Running locally => fake user is admin
+    if os.getenv("SYSTEM") != "spaces":
+        return ["FakeGradioUser"]
+
+    # Running in Space but no space_id => ???
+    space_id = os.getenv("SPACE_ID")
+    if space_id is None:
+        return ["Unknown"]
+
+    # Running in Space => try to fetch organization members
+    # Otherwise, it's not an organization => namespace is the user
+    namespace = space_id.split("/")[0]
+    response = requests.get(f"https://huggingface.co/api/organizations/{namespace}/members")
+    if response.status_code == 200:
+        return sorted((member["user"] for member in response.json()), key=lambda x: x.lower())
+    return [namespace]