import torch
import yaml
import sys
import copy
import os
sys.path.append("/home/ubuntu/Desktop/Domain_Adaptation_Project/repos/SVDSAM/")

from data_utils import *
from model import *
from utils import *
from data_transforms.glas_transform import GLAS_Transform

label_names = ['Glands']
label_dict = {}
# visualize_dict = {}
for i,ln in enumerate(label_names):
        label_dict[ln] = i
        # visualize_dict[ln] = visualize_li[i]

def parse_args():
    parser = argparse.ArgumentParser()

    parser.add_argument('--data_folder', default='config_tmp.yml',
                        help='data folder file path')

    parser.add_argument('--data_config', default='config_tmp.yml',
                        help='data config file path')

    parser.add_argument('--model_config', default='model_baseline.yml',
                        help='model config file path')

    parser.add_argument('--pretrained_path', default=None,
                        help='pretrained model path')

    parser.add_argument('--save_path', default='checkpoints/temp.pth',
                        help='pretrained model path')

    parser.add_argument('--gt_path', default='',
                        help='ground truth path')

    parser.add_argument('--device', default='cuda:0', help='device to train on')

    parser.add_argument('--labels_of_interest', default='Left Prograsp Forceps,Maryland Bipolar Forceps,Right Prograsp Forceps,Left Large Needle Driver,Right Large Needle Driver', help='labels of interest')

    parser.add_argument('--codes', default='1,2,1,3,3', help='numeric label to save per instrument')

    args = parser.parse_args()

    return args

def main():
    args = parse_args()
    with open(args.data_config, 'r') as f:
        data_config = yaml.load(f, Loader=yaml.FullLoader)
    with open(args.model_config, 'r') as f:
        model_config = yaml.load(f, Loader=yaml.FullLoader)
    labels_of_interest = args.labels_of_interest.split(',')

    #make folder to save visualizations
    os.makedirs(os.path.join(args.save_path,"preds"),exist_ok=True)
    os.makedirs(os.path.join(args.save_path,"rescaled_preds"),exist_ok=True)
    if args.gt_path:
        os.makedirs(os.path.join(args.save_path,"rescaled_gt"),exist_ok=True)

    #load model
    # model = Prompt_Adapted_SAM(config=model_config, label_text_dict=label_dict, device=args.device, training_strategy='svdtuning')
    model = Prompt_Adapted_SAM(config=model_config, label_text_dict=label_dict, device=args.device, training_strategy='lora')
    
    #legacy model support
    if args.pretrained_path:
        sdict = torch.load(args.pretrained_path, map_location=args.device)
        # for key in list(sdict.keys()):
        #     if 'sam_encoder.neck' in key:
        #         if '0' in key:
        #             new_key = key.replace('0','conv1')
        #         if '1' in key:
        #             new_key = key.replace('1','ln1')
        #         if '2' in key:
        #             new_key = key.replace('2','conv2')
        #         if '3' in key:
        #             new_key = key.replace('3','ln2')
        #         sdict[new_key] = sdict[key]
        #         _ = sdict.pop(key)
        #     if 'mask_decoder' in key:
        #         if 'trainable' in key:
        #             _ = sdict.pop(key)   
        
        model.load_state_dict(sdict,strict=True)
    model = model.to(args.device)
    model = model.eval()

    #load data transform
    data_transform = GLAS_Transform(config=data_config)

    #dice
    dices = []
    ious=[]

    #load data
    for i,img_name in enumerate(sorted(os.listdir(args.data_folder))):
        if (('png' not in img_name) and ('jpg' not in img_name) and ('jpeg' not in img_name) and ('bmp' not in img_name)):
            continue
        if 'anno' in img_name:
            continue
        # if i%5!=0:
        #     continue
        img_path = (os.path.join(args.data_folder,img_name))
        if args.gt_path:
            gt_path = (os.path.join(args.data_folder,img_name[:-4]+'_anno.bmp'))

        # print(img_path)
        img = torch.as_tensor(np.array(Image.open(img_path).convert("RGB")))
        img = img.permute(2,0,1)
        C,H,W = img.shape
        #make a dummy mask of shape 1XHXW
        if args.gt_path:
            label = torch.Tensor(np.array(Image.open(gt_path)))
            if len(label.shape)==3:
                label = label[:,:,0]
            label = label.unsqueeze(0)
            mask = (label>0)+0
            # plt.imshow(gold)
            # plt.show()

        else:
            mask = torch.zeros((1,H,W))
        img, mask = data_transform(img, mask, is_train=False, apply_norm=True)
        mask = (mask>=0.5)+0

        #get image embeddings
        img = img.unsqueeze(0).to(args.device)  #1XCXHXW
        img_embeds = model.get_image_embeddings(img)

        # generate masks for all labels of interest
        img_embeds_repeated = img_embeds.repeat(len(labels_of_interest),1,1,1)
        x_text = [t for t in labels_of_interest]
        masks = model.get_masks_for_multiple_labels(img_embeds_repeated, x_text).cpu()

        plt.imshow((masks[0]>=0.5), cmap='gray')
        plt.savefig(os.path.join(args.save_path,'rescaled_preds', img_name[:-4]+'.png'))
        plt.close()

        if args.gt_path:
            plt.imshow((mask[0]), cmap='gray')
            plt.savefig(os.path.join(args.save_path,'rescaled_gt', img_name[:-4]+'.png'))
            plt.close()

        # print("dice: ",dice_coef(label, (masks>0.5)+0))
        dices.append(dice_coef(mask, (masks>=0.5)+0))
        ious.append(iou_coef(mask, (masks>=0.5)+0))
        # break
    print(torch.mean(torch.Tensor(dices)))
    print(torch.mean(torch.Tensor(ious)))

if __name__ == '__main__':
    main()