import os, sys
import random
import warnings

os.system("python -m pip install -e segment_anything")
os.system("python -m pip install -e GroundingDINO")
os.system("pip install --upgrade diffusers[torch]")
os.system("pip install opencv-python pycocotools matplotlib onnxruntime onnx ipykernel")
os.system("wget http://cleancoastindia.com//SsagarSvc/Uploads/sample1.jpg")
os.system("wget http://cleancoastindia.com/SsagarSvc/Uploads/sample2.jpg")
os.system("wget http://cleancoastindia.com/SsagarSvc/Uploads/sample3.jpg")
os.system("wget http://cleancoastindia.com/SsagarSvc/Uploads/sample4.jpg")
os.system("wget http://cleancoastindia.com/SsagarSvc/Uploads/sample5.jpg")
os.system("wget http://cleancoastindia.com/SsagarSvc/Uploads/sample6.jpg")
os.system("wget http://huggingface.co/ShilongLiu/GroundingDINO/resolve/main/groundingdino_swint_ogc.pth")
os.system("wget http://huggingface.co/spaces/mrtlive/segment-anything-model/resolve/main/sam_vit_h_4b8939.pth")
sys.path.append(os.path.join(os.getcwd(), "GroundingDINO"))
sys.path.append(os.path.join(os.getcwd(), "segment_anything"))
sys.path.append(os.path.join(os.getcwd(), "Roboto-Regular"))
warnings.filterwarnings("ignore")

import gradio as gr
import argparse

import numpy as np
import torch
import torchvision
from PIL import Image, ImageDraw, ImageFont

# Grounding DINO
import GroundingDINO.groundingdino.datasets.transforms as T
from GroundingDINO.groundingdino.models import build_model
from GroundingDINO.groundingdino.util.slconfig import SLConfig
from GroundingDINO.groundingdino.util.utils import clean_state_dict, get_phrases_from_posmap

# segment anything
from segment_anything import build_sam, SamPredictor
import numpy as np

# diffusers
import torch
from diffusers import StableDiffusionInpaintPipeline

# BLIP
from transformers import BlipProcessor, BlipForConditionalGeneration


def generate_caption(processor, blip_model, raw_image):
    # unconditional image captioning
    inputs = processor(raw_image, return_tensors="pt").to(
        "cuda", torch.float16)
    out = blip_model.generate(**inputs)
    caption = processor.decode(out[0], skip_special_tokens=True)
    return caption


def transform_image(image_pil):
    transform = T.Compose(
        [
            T.RandomResize([800], max_size=1333),
            T.ToTensor(),
            T.Normalize([0.485, 0.456, 0.406], [0.229, 0.224, 0.225]),
        ]
    )
    image, _ = transform(image_pil, None)  # 3, h, w
    return image


def load_model(model_config_path, model_checkpoint_path, device):
    args = SLConfig.fromfile(model_config_path)
    args.device = device
    model = build_model(args)
    checkpoint = torch.load(model_checkpoint_path, map_location="cpu")
    load_res = model.load_state_dict(
        clean_state_dict(checkpoint["model"]), strict=False)
    print(load_res)
    _ = model.eval()
    return model


def get_grounding_output(model, image, caption, box_threshold, text_threshold, with_logits=True):
    # caption="all plastic.all metal.all paper.all glass.all cardboard.all wood.all rubber"
    # caption="plastic.metal.paper.glass.cardboard.wood.rubber"
    print(caption)
    caption = caption.lower()
    caption = caption.strip()
    if not caption.endswith("."):
        caption = caption + "."

    with torch.no_grad():
        outputs = model(image[None], captions=[caption])
    logits = outputs["pred_logits"].cpu().sigmoid()[0]  # (nq, 256)
    boxes = outputs["pred_boxes"].cpu()[0]  # (nq, 4)
    logits.shape[0]

    # filter output
    logits_filt = logits.clone()
    boxes_filt = boxes.clone()
    filt_mask = logits_filt.max(dim=1)[0] > box_threshold
    logits_filt = logits_filt[filt_mask]  # num_filt, 256
    boxes_filt = boxes_filt[filt_mask]  # num_filt, 4
    logits_filt.shape[0]

    # get phrase
    tokenlizer = model.tokenizer
    tokenized = tokenlizer(caption)
    # build pred
    pred_phrases = []
    scores = []
    for logit, box in zip(logits_filt, boxes_filt):
        pred_phrase = get_phrases_from_posmap(
            logit > text_threshold, tokenized, tokenlizer)
        if with_logits:
            pred_phrases.append(
                pred_phrase + f"({str(logit.max().item())[:4]})")
        else:
            pred_phrases.append(pred_phrase)
        scores.append(logit.max().item())

    return boxes_filt, torch.Tensor(scores), pred_phrases


def draw_mask(mask, draw, random_color=False):
    if random_color:
        color = (random.randint(0, 255), random.randint(
            0, 255), random.randint(0, 255), 153)
    else:
        color = (30, 144, 255, 153)

    nonzero_coords = np.transpose(np.nonzero(mask))

    for coord in nonzero_coords:
        draw.point(coord[::-1], fill=color)


def draw_box(box, draw, label):
    # random color
    color = tuple(np.random.randint(0, 255, size=3).tolist())

    draw.rectangle(((box[0], box[1]), (box[2], box[3])),
                   outline=color, width=2)

    if label:
        # font = ImageFont.load_default()
        font = ImageFont.truetype("Roboto-Regular.ttf", 20)
        if hasattr(font, "getbbox"):
            bbox = draw.textbbox((box[0], box[1]), str(label), font)
        else:
            w, h = draw.textsize(str(label), font)
            bbox = (box[0], box[1], w + box[0], box[1] + h)
        draw.rectangle(bbox, fill=color)
        # draw.text((box[0], box[1]), str(label), fill="white")
        draw.text((box[0], box[1]), label)


config_file = 'GroundingDINO/groundingdino/config/GroundingDINO_SwinT_OGC.py'
ckpt_repo_id = "ShilongLiu/GroundingDINO"
ckpt_filenmae = "groundingdino_swint_ogc.pth"
sam_checkpoint = 'sam_vit_h_4b8939.pth'
output_dir = "outputs"
device = 'cuda' if torch.cuda.is_available() else 'cpu'

blip_processor = None
blip_model = None
groundingdino_model = None
sam_predictor = None
inpaint_pipeline = None


def run_grounded_sam(input_image, text_prompt, box_threshold, text_threshold, iou_threshold):
    global blip_processor, blip_model, groundingdino_model, sam_predictor, inpaint_pipeline
    task_type = "seg"
    box_threshold = 0.3
    text_threshold = 0.3
    iou_threshold = 0.75
    # make dir
    os.makedirs(output_dir, exist_ok=True)
    # load image
    image_pil = input_image.convert("RGB")
    transformed_image = transform_image(image_pil)

    if groundingdino_model is None:
        groundingdino_model = load_model(
            config_file, ckpt_filenmae, device=device)

    # run grounding dino model
    boxes_filt, scores, pred_phrases = get_grounding_output(
        groundingdino_model, transformed_image, text_prompt, box_threshold, text_threshold
    )

    size = image_pil.size

    # process boxes
    H, W = size[1], size[0]
    for i in range(boxes_filt.size(0)):
        boxes_filt[i] = boxes_filt[i] * torch.Tensor([W, H, W, H])
        boxes_filt[i][:2] -= boxes_filt[i][2:] / 2
        boxes_filt[i][2:] += boxes_filt[i][:2]

    boxes_filt = boxes_filt.cpu()

    # nms
    print(f"Before NMS: {boxes_filt.shape[0]} boxes")
    nms_idx = torchvision.ops.nms(
        boxes_filt, scores, iou_threshold).numpy().tolist()
    boxes_filt = boxes_filt[nms_idx]
    pred_phrases = [pred_phrases[idx] for idx in nms_idx]
    print(f"After NMS: {boxes_filt.shape[0]} boxes")

    if task_type == 'seg' and boxes_filt.shape[0] > 0:
        if sam_predictor is None:
            # initialize SAM
            assert sam_checkpoint, 'sam_checkpoint is not found!'
            sam = build_sam(checkpoint=sam_checkpoint)
            sam.to(device=device)
            sam_predictor = SamPredictor(sam)

        image = np.array(image_pil)
        sam_predictor.set_image(image)

        transformed_boxes = sam_predictor.transform.apply_boxes_torch(
            boxes_filt, image.shape[:2]).to(device)

        masks, _, _ = sam_predictor.predict_torch(
            point_coords=None,
            point_labels=None,
            boxes=transformed_boxes,
            multimask_output=False,
        )
        # masks: [1, 1, 512, 512]

    if task_type == 'seg' and len(masks) > 0:
        mask_image = Image.new('RGBA', size, color=(0, 0, 0, 0))

        mask_draw = ImageDraw.Draw(mask_image)
        for mask in masks:
            draw_mask(mask[0].cpu().numpy(), mask_draw, random_color=True)

        image_draw = ImageDraw.Draw(image_pil)
        label_string = ""
        label_stringarr = []
        for box, label in zip(boxes_filt, pred_phrases):
            # draw_box(box, image_draw, label)
            index = label.find("(")
            if index != -1:
                new_label = label[:index].strip()
                label_stringarr.append(new_label)
                draw_box(box, image_draw, new_label)
            else:
                new_label = label
                label_stringarr.append(new_label)
                draw_box(box, image_draw, new_label)
                # print(label_stringarr)
        label_counts = []
        counts = {}
        for label in label_stringarr:
            if label in counts:
                counts[label] += 1
            else:
                counts[label] = 1
        for label, count in counts.items():
            label_counts.append(f"{label}: {count}")
        label_counts_string = "\n".join(label_counts)
        print(label_counts_string)
        image_pil = image_pil.convert('RGBA')
        image_pil.alpha_composite(mask_image)
        return image_pil, label_counts_string
        # return [image_pil, mask_image]
    else:
        raise gr.InvalidOutputException("Model output is empty")
        print("number of  masks".format(len(masks)))


if __name__ == "__main__":
    parser = argparse.ArgumentParser("Marine Litter", add_help=True)
    parser.add_argument("--debug", action="store_true",
                        help="using debug mode")
    parser.add_argument("--share", action="store_true", help="share the app")
    parser.add_argument('--no-gradio-queue', action="store_true",
                        help='path to the SAM checkpoint')
    args = parser.parse_args()

    print(args)

    block = gr.Blocks()
    if not args.no_gradio_queue:
        block = block.queue()

    with block:
        with gr.Row():
            with gr.Column():
                gr.Markdown("# Litter Segmentation and Detection")
                input_image = gr.Image(type="pil", label="Upload Image", interactive=True)
                
                # , value="demo1.jpg"
                # task_type = gr.Dropdown(
                text_prompt = gr.Dropdown(["plastic.metal.paper.glass.rubber.wood",
                                           "bottle.cap.cup.rope.tire.cigarette.bag.slippers.can.card board box.paper.wrapper.food.coconut.dustbin.cover"],
                                          value="plastic.metal.paper.glass.rubber.wood", label="select or enter prompt separate with dot . ",allow_custom_value=True)
                # text_prompt = gr.Textbox(label="Text Prompt",
                #   value="plastic.metal.paper.glass.cardboard.wood.rubber")
                run_button = gr.Button("Run")
                gr.Markdown("# Image Examples")
                #gr.Examples(["sample1.jpg", "sample2.jpg","sample3.jpg","sample4.jpg","sample5.jpg","sample6.jpg"], input_image,cache_examples=False)
                gr.Examples(examples=["sample1.jpg", "sample2.jpg", "sample3.jpg", "sample4.jpg", "sample5.jpg", "sample6.jpg"],inputs=[input_image],cache_examples=False)
                # with gr.Accordion("Advanced options", open=False):
                      
            with gr.Column():
                gr.Markdown("# Model Output")
                gallery = gr.Image("Segmented Output")
                gr.Markdown("# No of classes and count")
                lbl = gr.Label("Classes Detected")
                # gallery = gr.Gallery(
                #    label="Generated images", show_label=True, elem_id="gallery"
                # ).style(preview=True, grid=2, object_fit="scale-down")

        run_button.click(fn=run_grounded_sam, inputs=[input_image, text_prompt],
                         outputs=[gallery, lbl])

    block.launch(debug=args.debug, share=args.share, show_error=True)
    #block.launch(debug=True, show_error=True)