# created with great guidance from https://github.com/NimaBoscarino

import gradio as gr

import kornia as K
from kornia.core import Tensor


# Define Functions
def box_blur_fn(file, box_blur):      
    # load the image using the rust backend          
    img: Tensor = K.io.load_image(file.name, K.io.ImageLoadType.RGB32)
    img = img[None]  # 1xCxHxW / fp32 / [0, 1]

    x_out: Tensor = K.filters.box_blur(img, (int(box_blur), int(box_blur)))
    
    return K.utils.tensor_to_image(x_out)


def blur_pool2d_fn(file, blur_pool2d):      
    # load the image using the rust backend          
    img: Tensor = K.io.load_image(file.name, K.io.ImageLoadType.RGB32)
    img = img[None]  # 1xCxHxW / fp32 / [0, 1]

    x_out: Tensor = K.filters.blur_pool2d(img, int(blur_pool2d))
    
    return K.utils.tensor_to_image(x_out)


def gaussian_blur_fn(file, gaussian_blur2d):      
    # load the image using the rust backend          
    img: Tensor = K.io.load_image(file.name, K.io.ImageLoadType.RGB32)
    img = img[None]  # 1xCxHxW / fp32 / [0, 1]

    x_out: Tensor = K.filters.gaussian_blur2d(img, 
                                              (int(gaussian_blur2d), int(gaussian_blur2d)),
                                              (float(gaussian_blur2d), float(gaussian_blur2d)))
    
    return K.utils.tensor_to_image(x_out)


def max_blur_pool2d_fn(file, max_blur_pool2d):
    # load the image using the rust backend          
    img: Tensor = K.io.load_image(file.name, K.io.ImageLoadType.RGB32)
    img = img[None]  # 1xCxHxW / fp32 / [0, 1]

    x_out: Tensor = K.filters.max_blur_pool2d(img, int(max_blur_pool2d))
    
    return K.utils.tensor_to_image(x_out)


def median_blur_fn(file, median_blur):      
    # load the image using the rust backend          
    img: Tensor = K.io.load_image(file.name, K.io.ImageLoadType.RGB32)
    img = img[None]  # 1xCxHxW / fp32 / [0, 1]

    x_out: Tensor = K.filters.median_blur(img, (int(median_blur), int(median_blur)))

    return K.utils.tensor_to_image(x_out)


# Define Examples
examples = [
    ["examples/monkey.jpg", 1, 1, 1, 1, 1],
    ["examples/pikachu.jpg", 1, 1, 1, 1, 1]
]


# Define Demos
box_blur_demo = gr.Interface(
    box_blur_fn,
    [
        gr.inputs.Image(type="file"),
        gr.inputs.Slider(minimum=1, maximum=20, step=1, default=10, label="Box Blur")
    ],
    "image",
    examples=examples,
    # title=title,
    # description=description,
    # article=article,
    # live=True # --> 2022.09.08: Bug with click and dragging button. See: https://huggingface.co/spaces/kornia/kornia-image-filtering/discussions/2#63206d3b54a96c8e65c1fed2
)


blur_pool2d_demo = gr.Interface(
    blur_pool2d_fn,
    [
        gr.inputs.Image(type="file"),
        gr.inputs.Slider(minimum=1, maximum=40, step=1, default=20, label="Blur Pool")
    ],
    "image",
    examples=examples,
    # title=title,
    # description=description,
    # article=article,
    # live=True # --> 2022.09.08: Bug with click and dragging button. See: https://huggingface.co/spaces/kornia/kornia-image-filtering/discussions/2#63206d3b54a96c8e65c1fed2
)


gaussian_blur_demo = gr.Interface(
    gaussian_blur_fn,
    [
        gr.inputs.Image(type="file"),
        gr.inputs.Slider(minimum=1, maximum=30, step=2, default=15, label="Gaussian Blur")
    ],
    "image",
    examples=examples,
    # title=title,
    # description=description,
    # article=article,
    # live=True # --> 2022.09.08: Bug with click and dragging button. See: https://huggingface.co/spaces/kornia/kornia-image-filtering/discussions/2#63206d3b54a96c8e65c1fed2
)


max_blur_pool2d_demo = gr.Interface(
    max_blur_pool2d_fn,
    [
        gr.inputs.Image(type="file"),
        gr.inputs.Slider(minimum=1, maximum=40, step=1, default=20, label="Max Pool")
    ],
    "image",
    examples=examples,
    # title=title,
    # description=description,
    # article=article,
    # live=True # --> 2022.09.08: Bug with click and dragging button. See: https://huggingface.co/spaces/kornia/kornia-image-filtering/discussions/2#63206d3b54a96c8e65c1fed2
)

median_blur_demo = gr.Interface(
    median_blur_fn,
    [
        gr.inputs.Image(type="file"),
        gr.inputs.Slider(minimum=1, maximum=30, step=2, default=15, label="Median Blur")
    ],
    "image",
    examples=examples,
    # title=title,
    # description=description,
    # article=article,
    # live=True # --> 2022.09.08: Bug with click and dragging button. See: https://huggingface.co/spaces/kornia/kornia-image-filtering/discussions/2#63206d3b54a96c8e65c1fed2
)


# Create Interface
demo = gr.TabbedInterface(
    [
      box_blur_demo,
      blur_pool2d_demo,
      gaussian_blur_demo,
      max_blur_pool2d_demo,
      median_blur_demo
    ], 
    [
      "Box Blur", 
      "Blur Pool",
      "Gaussian Blur",
      "Max Pool",
      "Median Blur"
    ]
)

demo.launch()