# Copyright (c) Meta Platforms, Inc. and affiliates.
# All rights reserved.
#
# This source code is licensed under the license found in the
# LICENSE file in the root directory of this source tree.

import os
import cv2
import numpy as np
import gradio as gr
import sys
import shutil
from datetime import datetime
import glob
import gc
import time
import spaces
import requests
import websocket
import json
import uuid
import base64
import io


sys.path.append("vggt/")

from visual_util import predictions_to_glb

# Remote VGGT service host
VGGT_HOST = os.getenv("VGGT_HOST", "134.199.133.34")

# No longer loading model locally
# model = None


# -------------------------------------------------------------------------
# Remote service communication functions
# -------------------------------------------------------------------------
def _open_ws(client_id: str, token: str):
    """Open WebSocket connection to remote VGGT service"""
    ws = websocket.WebSocket()
    ws.connect(f"ws://{VGGT_HOST}/ws?clientId={client_id}&token={token}", timeout=1800)
    return ws


def _submit_inference(target_dir: str, client_id: str, token: str) -> str:
    """Submit inference job to remote VGGT service"""
    # Prepare image files for upload
    image_names = glob.glob(os.path.join(target_dir, "images", "*"))
    image_names = sorted(image_names)

    if len(image_names) == 0:
        raise ValueError("No images found. Check your upload.")

    # Encode images as base64
    images_data = []
    for img_path in image_names:
        with open(img_path, "rb") as f:
            img_bytes = f.read()
            img_b64 = base64.b64encode(img_bytes).decode("utf-8")
            images_data.append(
                {"filename": os.path.basename(img_path), "data": img_b64}
            )

    payload = {"images": images_data, "client_id": client_id}

    resp = requests.post(
        f"http://{VGGT_HOST}/inference?token={token}", json=payload, timeout=1800
    )

    if resp.status_code != 200:
        raise RuntimeError(f"VGGT service /inference err: {resp.text}")

    data = resp.json()
    if "job_id" not in data:
        raise RuntimeError(f"/inference no job_id: {data}")

    return data["job_id"]


def _get_result(job_id: str, token: str) -> dict:
    """Get inference result from remote VGGT service"""
    resp = requests.get(
        f"http://{VGGT_HOST}/result/{job_id}?token={token}", timeout=1800
    )
    resp.raise_for_status()
    result = resp.json()
    return result.get(job_id, {})


# -------------------------------------------------------------------------
# 1) Core model inference (now forwards to remote service)
# -------------------------------------------------------------------------
def run_model(target_dir, model=None) -> dict:
    """
    Run the VGGT model on images in the 'target_dir/images' folder and return predictions.
    Now forwards to remote VGGT service instead of running locally.
    """
    print(f"Processing images from {target_dir}")

    # Load image names for validation
    image_names = glob.glob(os.path.join(target_dir, "images", "*"))
    image_names = sorted(image_names)
    print(f"Found {len(image_names)} images")
    if len(image_names) == 0:
        raise ValueError("No images found. Check your upload.")

    # Generate client ID and token
    client_id = str(uuid.uuid4())
    token = str(uuid.uuid4())

    # Open WebSocket for progress updates
    print("Connecting to remote VGGT service...")
    ws = _open_ws(client_id, token)

    # Submit inference job
    print("Submitting inference job...")
    job_id = _submit_inference(target_dir, client_id, token)

    # Monitor progress via WebSocket
    print("Monitoring inference progress...")
    ws.settimeout(180)
    while True:
        try:
            out = ws.recv()
            if isinstance(out, (bytes, bytearray)):
                continue

            msg = json.loads(out)
            if msg.get("type") == "executing":
                data = msg.get("data", {})
                if data.get("job_id") != job_id:
                    continue
                node = data.get("node")
                if node is None:
                    # Job complete
                    break
                print(f"Processing node: {node}")
        except Exception as e:
            print(f"WebSocket error: {e}")
            break

    ws.close()

    # Get final result
    print("Retrieving inference results...")
    result = _get_result(job_id, token)

    if "predictions" not in result:
        raise RuntimeError(f"No predictions in result: {result}")

    # Deserialize predictions from base64-encoded numpy arrays
    predictions = {}
    for key, value in result["predictions"].items():
        if isinstance(value, str):
            # Decode base64 numpy array
            arr_bytes = base64.b64decode(value)
            predictions[key] = np.load(io.BytesIO(arr_bytes), allow_pickle=True)
        else:
            predictions[key] = np.array(value)

    # Backend has already computed world_points_from_depth
    print("Received predictions from backend")

    return predictions


# -------------------------------------------------------------------------
# 2) Handle uploaded video/images --> produce target_dir + images
# -------------------------------------------------------------------------
def handle_uploads(input_video, input_images):
    """
    Create a new 'target_dir' + 'images' subfolder, and place user-uploaded
    images or extracted frames from video into it. Return (target_dir, image_paths).
    """
    start_time = time.time()
    gc.collect()

    # Create a unique folder name
    timestamp = datetime.now().strftime("%Y%m%d_%H%M%S_%f")
    target_dir = f"input_images_{timestamp}"
    target_dir_images = os.path.join(target_dir, "images")

    # Clean up if somehow that folder already exists
    if os.path.exists(target_dir):
        shutil.rmtree(target_dir)
    os.makedirs(target_dir)
    os.makedirs(target_dir_images)

    image_paths = []

    # --- Handle images ---
    if input_images is not None:
        for file_data in input_images:
            if isinstance(file_data, dict) and "name" in file_data:
                file_path = file_data["name"]
            else:
                file_path = file_data
            dst_path = os.path.join(target_dir_images, os.path.basename(file_path))
            shutil.copy(file_path, dst_path)
            image_paths.append(dst_path)

    # --- Handle video ---
    if input_video is not None:
        if isinstance(input_video, dict) and "name" in input_video:
            video_path = input_video["name"]
        else:
            video_path = input_video

        vs = cv2.VideoCapture(video_path)
        fps = vs.get(cv2.CAP_PROP_FPS)
        frame_interval = int(fps * 1)  # 1 frame/sec

        count = 0
        video_frame_num = 0
        while True:
            gotit, frame = vs.read()
            if not gotit:
                break
            count += 1
            if count % frame_interval == 0:
                image_path = os.path.join(
                    target_dir_images, f"{video_frame_num:06}.png"
                )
                cv2.imwrite(image_path, frame)
                image_paths.append(image_path)
                video_frame_num += 1

    # Sort final images for gallery
    image_paths = sorted(image_paths)

    end_time = time.time()
    print(
        f"Files copied to {target_dir_images}; took {end_time - start_time:.3f} seconds"
    )
    return target_dir, image_paths


# -------------------------------------------------------------------------
# 3) Update gallery on upload
# -------------------------------------------------------------------------
def update_gallery_on_upload(input_video, input_images):
    """
    Whenever user uploads or changes files, immediately handle them
    and show in the gallery. Return (target_dir, image_paths).
    If nothing is uploaded, returns "None" and empty list.
    """
    if not input_video and not input_images:
        return None, None, None, None
    target_dir, image_paths = handle_uploads(input_video, input_images)
    return (
        None,
        target_dir,
        image_paths,
        "Upload complete. Click 'Reconstruct' to begin 3D processing.",
    )


# -------------------------------------------------------------------------
# 4) Reconstruction: uses the target_dir plus any viz parameters
# -------------------------------------------------------------------------
def gradio_demo(
    target_dir,
    conf_thres=3.0,
    frame_filter="All",
    mask_black_bg=False,
    mask_white_bg=False,
    show_cam=True,
    mask_sky=False,
    prediction_mode="Pointmap Regression",
):
    """
    Perform reconstruction using the already-created target_dir/images.
    """
    if not os.path.isdir(target_dir) or target_dir == "None":
        return None, "No valid target directory found. Please upload first.", None, None

    start_time = time.time()
    gc.collect()

    # Prepare frame_filter dropdown
    target_dir_images = os.path.join(target_dir, "images")
    all_files = (
        sorted(os.listdir(target_dir_images))
        if os.path.isdir(target_dir_images)
        else []
    )
    all_files = [f"{i}: {filename}" for i, filename in enumerate(all_files)]
    frame_filter_choices = ["All"] + all_files

    print("Running run_model...")
    predictions = run_model(target_dir)

    # Save predictions
    prediction_save_path = os.path.join(target_dir, "predictions.npz")
    np.savez(prediction_save_path, **predictions)

    # Handle None frame_filter
    if frame_filter is None:
        frame_filter = "All"

    # Build a GLB file name
    glbfile = os.path.join(
        target_dir,
        f"glbscene_{conf_thres}_{frame_filter.replace('.', '_').replace(':', '').replace(' ', '_')}_maskb{mask_black_bg}_maskw{mask_white_bg}_cam{show_cam}_sky{mask_sky}_pred{prediction_mode.replace(' ', '_')}.glb",
    )

    # Convert predictions to GLB
    glbscene = predictions_to_glb(
        predictions,
        conf_thres=conf_thres,
        filter_by_frames=frame_filter,
        mask_black_bg=mask_black_bg,
        mask_white_bg=mask_white_bg,
        show_cam=show_cam,
        mask_sky=mask_sky,
        target_dir=target_dir,
        prediction_mode=prediction_mode,
    )
    glbscene.export(file_obj=glbfile)

    # Cleanup
    del predictions
    gc.collect()

    end_time = time.time()
    print(f"Total time: {end_time - start_time:.2f} seconds")
    log_msg = (
        f"Reconstruction Success ({len(all_files)} frames). Waiting for visualization."
    )

    return (
        glbfile,
        log_msg,
        gr.Dropdown(choices=frame_filter_choices, value=frame_filter, interactive=True),
    )


# -------------------------------------------------------------------------
# 5) Helper functions for UI resets + re-visualization
# -------------------------------------------------------------------------
def clear_fields():
    """
    Clears the 3D viewer, the stored target_dir, and empties the gallery.
    """
    return None


def update_log():
    """
    Display a quick log message while waiting.
    """
    return "Loading and Reconstructing..."


def update_visualization(
    target_dir,
    conf_thres,
    frame_filter,
    mask_black_bg,
    mask_white_bg,
    show_cam,
    mask_sky,
    prediction_mode,
    is_example,
):
    """
    Reload saved predictions from npz, create (or reuse) the GLB for new parameters,
    and return it for the 3D viewer. If is_example == "True", skip.
    """

    # If it's an example click, skip as requested
    if is_example == "True":
        return (
            None,
            "No reconstruction available. Please click the Reconstruct button first.",
        )

    if not target_dir or target_dir == "None" or not os.path.isdir(target_dir):
        return (
            None,
            "No reconstruction available. Please click the Reconstruct button first.",
        )

    predictions_path = os.path.join(target_dir, "predictions.npz")
    if not os.path.exists(predictions_path):
        return (
            None,
            f"No reconstruction available at {predictions_path}. Please run 'Reconstruct' first.",
        )

    loaded = np.load(predictions_path, allow_pickle=True)
    predictions = {key: loaded[key] for key in loaded.keys()}

    glbfile = os.path.join(
        target_dir,
        f"glbscene_{conf_thres}_{frame_filter.replace('.', '_').replace(':', '').replace(' ', '_')}_maskb{mask_black_bg}_maskw{mask_white_bg}_cam{show_cam}_sky{mask_sky}_pred{prediction_mode.replace(' ', '_')}.glb",
    )

    if not os.path.exists(glbfile):
        glbscene = predictions_to_glb(
            predictions,
            conf_thres=conf_thres,
            filter_by_frames=frame_filter,
            mask_black_bg=mask_black_bg,
            mask_white_bg=mask_white_bg,
            show_cam=show_cam,
            mask_sky=mask_sky,
            target_dir=target_dir,
            prediction_mode=prediction_mode,
        )
        glbscene.export(file_obj=glbfile)

    return glbfile, "Updating Visualization"


# -------------------------------------------------------------------------
# Example images
# -------------------------------------------------------------------------

# Get the absolute directory of app.py to ensure correct resource paths
APP_DIR = os.path.dirname(os.path.abspath(__file__))

# Use absolute paths for all example videos to ensure they load correctly in containerized environments
# canyon_video = os.path.join(APP_DIR, "examples/videos/Studlagil_Canyon_East_Iceland.mp4")
great_wall_video = os.path.join(APP_DIR, "examples/videos/great_wall.mp4")
colosseum_video = os.path.join(APP_DIR, "examples/videos/Colosseum.mp4")
room_video = os.path.join(APP_DIR, "examples/videos/room.mp4")
kitchen_video = os.path.join(APP_DIR, "examples/videos/kitchen.mp4")
fern_video = os.path.join(APP_DIR, "examples/videos/fern.mp4")
single_cartoon_video = os.path.join(APP_DIR, "examples/videos/single_cartoon.mp4")
single_oil_painting_video = os.path.join(
    APP_DIR, "examples/videos/single_oil_painting.mp4"
)
pyramid_video = os.path.join(APP_DIR, "examples/videos/pyramid.mp4")


# -------------------------------------------------------------------------
# 6) Build Gradio UI
# -------------------------------------------------------------------------
theme = gr.themes.Ocean()
theme.set(
    checkbox_label_background_fill_selected="*button_primary_background_fill",
    checkbox_label_text_color_selected="*button_primary_text_color",
)

with gr.Blocks(
    theme=theme,
    css="""
    .custom-log * {
        font-style: italic;
        font-size: 22px !important;
        background-image: linear-gradient(120deg, #0ea5e9 0%, #6ee7b7 60%, #34d399 100%);
        -webkit-background-clip: text;
        background-clip: text;
        font-weight: bold !important;
        color: transparent !important;
        text-align: center !important;
    }
    
    .example-log * {
        font-style: italic;
        font-size: 16px !important;
        background-image: linear-gradient(120deg, #0ea5e9 0%, #6ee7b7 60%, #34d399 100%);
        -webkit-background-clip: text;
        background-clip: text;
        color: transparent !important;
    }
    
    #my_radio .wrap {
        display: flex;
        flex-wrap: nowrap;
        justify-content: center;
        align-items: center;
    }

    #my_radio .wrap label {
        display: flex;
        width: 50%;
        justify-content: center;
        align-items: center;
        margin: 0;
        padding: 10px 0;
        box-sizing: border-box;
    }
    """,
) as demo:

    # Instead of gr.State, we use a hidden Textbox:
    is_example = gr.Textbox(label="is_example", visible=False, value="None")
    num_images = gr.Textbox(label="num_images", visible=False, value="None")

    gr.HTML(
        """
    <h1>🏛️ VGGT: Visual Geometry Grounded Transformer</h1>
    <p>
    <a href="https://github.com/facebookresearch/vggt">🌟 GitHub Repository</a> |
    <a href="https://vgg-t.github.io/">🚀 Project Page</a>
    </p>

    <div style="font-size: 16px; line-height: 1.5;">
    <p>Upload a video or a set of images to create a 3D reconstruction of a scene or object. VGGT takes these images and generates all key 3D attributes, including extrinsic and intrinsic camera parameters, point maps, depth maps, and 3D point tracks.</p>

    <h3>Getting Started:</h3>
    <ol>
        <li><strong>Upload Your Data:</strong> Use the "Upload Video" or "Upload Images" buttons on the left to provide your input. Videos will be automatically split into individual frames (one frame per second).</li>
        <li><strong>Preview:</strong> Your uploaded images will appear in the gallery on the left.</li>
        <li><strong>Reconstruct:</strong> Click the "Reconstruct" button to start the 3D reconstruction process.</li>
        <li><strong>Visualize:</strong> The 3D reconstruction will appear in the viewer on the right. You can rotate, pan, and zoom to explore the model, and download the GLB file. Note the visualization of 3D points may be slow for a large number of input images.</li>
        <li>
        <strong>Adjust Visualization (Optional):</strong>
        After reconstruction, you can fine-tune the visualization using the options below
        <details style="display:inline;">
            <summary style="display:inline;">(<strong>click to expand</strong>):</summary>
            <ul>
            <li><em>Confidence Threshold:</em> Adjust the filtering of points based on confidence.</li>
            <li><em>Show Points from Frame:</em> Select specific frames to display in the point cloud.</li>
            <li><em>Show Camera:</em> Toggle the display of estimated camera positions.</li>
            <li><em>Filter Sky / Filter Black Background:</em> Remove sky or black-background points.</li>
            <li><em>Select a Prediction Mode:</em> Choose between "Depthmap and Camera Branch" or "Pointmap Branch."</li>
            </ul>
        </details>
        </li>
    </ol>
    <p><strong style="color: #0ea5e9;">Please note:</strong> <span style="color: #0ea5e9; font-weight: bold;">Our model itself usually only needs less than 1 second to reconstruct a scene. However, visualizing 3D points may take tens of seconds due to third-party rendering, which are independent of VGGT's processing time. Please be patient or, for faster visualization, use a local machine to run our demo from our <a href="https://github.com/facebookresearch/vggt">GitHub repository</a>. </span></p>
    </div>
    """
    )

    target_dir_output = gr.Textbox(label="Target Dir", visible=False, value="None")

    with gr.Row():
        with gr.Column(scale=2):
            input_video = gr.Video(label="Upload Video", interactive=True)
            input_images = gr.File(
                file_count="multiple", label="Upload Images", interactive=True
            )

            image_gallery = gr.Gallery(
                label="Preview",
                columns=4,
                height="300px",
                object_fit="contain",
                preview=True,
            )

        with gr.Column(scale=4):
            with gr.Column():
                gr.Markdown("**3D Reconstruction (Point Cloud and Camera Poses)**")
                log_output = gr.Markdown(
                    "Please upload a video or images, then click Reconstruct.",
                    elem_classes=["custom-log"],
                )
                reconstruction_output = gr.Model3D(
                    height=520, zoom_speed=0.5, pan_speed=0.5
                )

            with gr.Row():
                submit_btn = gr.Button("Reconstruct", scale=1, variant="primary")
                clear_btn = gr.ClearButton(
                    [
                        input_video,
                        input_images,
                        reconstruction_output,
                        log_output,
                        target_dir_output,
                        image_gallery,
                    ],
                    scale=1,
                )

            with gr.Row():
                prediction_mode = gr.Radio(
                    ["Depthmap and Camera Branch", "Pointmap Branch"],
                    label="Select a Prediction Mode",
                    value="Depthmap and Camera Branch",
                    scale=1,
                    elem_id="my_radio",
                )

            with gr.Row():
                conf_thres = gr.Slider(
                    minimum=0,
                    maximum=100,
                    value=50,
                    step=0.1,
                    label="Confidence Threshold (%)",
                )
                frame_filter = gr.Dropdown(
                    choices=["All"], value="All", label="Show Points from Frame"
                )
                with gr.Column():
                    show_cam = gr.Checkbox(label="Show Camera", value=True)
                    mask_sky = gr.Checkbox(label="Filter Sky", value=False)
                    mask_black_bg = gr.Checkbox(
                        label="Filter Black Background", value=False
                    )
                    mask_white_bg = gr.Checkbox(
                        label="Filter White Background", value=False
                    )

    # ---------------------- Examples section ----------------------
    examples = [
        [
            colosseum_video,
            "22",
            None,
            20.0,
            False,
            False,
            True,
            False,
            "Depthmap and Camera Branch",
            "True",
        ],
        [
            pyramid_video,
            "30",
            None,
            35.0,
            False,
            False,
            True,
            False,
            "Depthmap and Camera Branch",
            "True",
        ],
        [
            single_cartoon_video,
            "1",
            None,
            15.0,
            False,
            False,
            True,
            False,
            "Depthmap and Camera Branch",
            "True",
        ],
        [
            single_oil_painting_video,
            "1",
            None,
            20.0,
            False,
            False,
            True,
            True,
            "Depthmap and Camera Branch",
            "True",
        ],
        # [canyon_video, "14", None, 40.0, False, False, True, False, "Depthmap and Camera Branch", "True"],
        [
            room_video,
            "8",
            None,
            5.0,
            False,
            False,
            True,
            False,
            "Depthmap and Camera Branch",
            "True",
        ],
        [
            kitchen_video,
            "25",
            None,
            50.0,
            False,
            False,
            True,
            False,
            "Depthmap and Camera Branch",
            "True",
        ],
        [
            fern_video,
            "20",
            None,
            45.0,
            False,
            False,
            True,
            False,
            "Depthmap and Camera Branch",
            "True",
        ],
    ]

    def example_pipeline(
        input_video,
        num_images_str,
        input_images,
        conf_thres,
        mask_black_bg,
        mask_white_bg,
        show_cam,
        mask_sky,
        prediction_mode,
        is_example_str,
    ):
        """
        1) Copy example images to new target_dir
        2) Reconstruct
        3) Return model3D + logs + new_dir + updated dropdown + gallery
        We do NOT return is_example. It's just an input.
        """
        target_dir, image_paths = handle_uploads(input_video, input_images)
        # Always use "All" for frame_filter in examples
        frame_filter = "All"
        glbfile, log_msg, dropdown = gradio_demo(
            target_dir,
            conf_thres,
            frame_filter,
            mask_black_bg,
            mask_white_bg,
            show_cam,
            mask_sky,
            prediction_mode,
        )
        return glbfile, log_msg, target_dir, dropdown, image_paths

    gr.Markdown("Click any row to load an example.", elem_classes=["example-log"])

    gr.Examples(
        examples=examples,
        inputs=[
            input_video,
            num_images,
            input_images,
            conf_thres,
            mask_black_bg,
            mask_white_bg,
            show_cam,
            mask_sky,
            prediction_mode,
            is_example,
        ],
        outputs=[
            reconstruction_output,
            log_output,
            target_dir_output,
            frame_filter,
            image_gallery,
        ],
        fn=example_pipeline,
        cache_examples=False,
        examples_per_page=50,
    )

    # -------------------------------------------------------------------------
    # "Reconstruct" button logic:
    #  - Clear fields
    #  - Update log
    #  - gradio_demo(...) with the existing target_dir
    #  - Then set is_example = "False"
    # -------------------------------------------------------------------------
    submit_btn.click(fn=clear_fields, inputs=[], outputs=[reconstruction_output]).then(
        fn=update_log, inputs=[], outputs=[log_output]
    ).then(
        fn=gradio_demo,
        inputs=[
            target_dir_output,
            conf_thres,
            frame_filter,
            mask_black_bg,
            mask_white_bg,
            show_cam,
            mask_sky,
            prediction_mode,
        ],
        outputs=[reconstruction_output, log_output, frame_filter],
    ).then(
        fn=lambda: "False", inputs=[], outputs=[is_example]  # set is_example to "False"
    )

    # -------------------------------------------------------------------------
    # Real-time Visualization Updates
    # -------------------------------------------------------------------------
    conf_thres.change(
        update_visualization,
        [
            target_dir_output,
            conf_thres,
            frame_filter,
            mask_black_bg,
            mask_white_bg,
            show_cam,
            mask_sky,
            prediction_mode,
            is_example,
        ],
        [reconstruction_output, log_output],
    )
    frame_filter.change(
        update_visualization,
        [
            target_dir_output,
            conf_thres,
            frame_filter,
            mask_black_bg,
            mask_white_bg,
            show_cam,
            mask_sky,
            prediction_mode,
            is_example,
        ],
        [reconstruction_output, log_output],
    )
    mask_black_bg.change(
        update_visualization,
        [
            target_dir_output,
            conf_thres,
            frame_filter,
            mask_black_bg,
            mask_white_bg,
            show_cam,
            mask_sky,
            prediction_mode,
            is_example,
        ],
        [reconstruction_output, log_output],
    )
    mask_white_bg.change(
        update_visualization,
        [
            target_dir_output,
            conf_thres,
            frame_filter,
            mask_black_bg,
            mask_white_bg,
            show_cam,
            mask_sky,
            prediction_mode,
            is_example,
        ],
        [reconstruction_output, log_output],
    )
    show_cam.change(
        update_visualization,
        [
            target_dir_output,
            conf_thres,
            frame_filter,
            mask_black_bg,
            mask_white_bg,
            show_cam,
            mask_sky,
            prediction_mode,
            is_example,
        ],
        [reconstruction_output, log_output],
    )
    mask_sky.change(
        update_visualization,
        [
            target_dir_output,
            conf_thres,
            frame_filter,
            mask_black_bg,
            mask_white_bg,
            show_cam,
            mask_sky,
            prediction_mode,
            is_example,
        ],
        [reconstruction_output, log_output],
    )
    prediction_mode.change(
        update_visualization,
        [
            target_dir_output,
            conf_thres,
            frame_filter,
            mask_black_bg,
            mask_white_bg,
            show_cam,
            mask_sky,
            prediction_mode,
            is_example,
        ],
        [reconstruction_output, log_output],
    )

    # -------------------------------------------------------------------------
    # Auto-update gallery whenever user uploads or changes their files
    # -------------------------------------------------------------------------
    input_video.change(
        fn=update_gallery_on_upload,
        inputs=[input_video, input_images],
        outputs=[reconstruction_output, target_dir_output, image_gallery, log_output],
    )
    input_images.change(
        fn=update_gallery_on_upload,
        inputs=[input_video, input_images],
        outputs=[reconstruction_output, target_dir_output, image_gallery, log_output],
    )

    demo.queue(max_size=20).launch(show_error=True, share=True, ssr_mode=False)