import plotly_express as px
import torch
import torch.nn.functional as F
import torchvision.transforms.functional as Vision
import cv2
import math
import numpy as np
import os
from pathlib import Path


def DumpTensorToImage(tensor, name, forceSquare=False, scale=1.0, Contrast=None, GridValue=None, Value2Log=False):
    if len(tensor.shape) != 2 and len(tensor.shape) != 1 and len(tensor.shape) != 3:
        raise ("Error input dims")
    if ("." not in name) or (name.split(".")[-1] not in {"jpg", "png", "bmp"}):
        raise ("Error input name")
    if Value2Log:
        DumpTensorToLog(tensor, name[:-4] + ".log")

    if len(tensor.shape) == 3:
        channel = tensor.shape[0]
        x = math.ceil((channel) ** 0.5)
        calc = tensor.reshape((channel, tensor.shape[1] * tensor.shape[2]))
        if not Contrast:
            tensormax = calc.max(1)[0]
            tensormin = calc.min(1)[0]
        else:
            tensormax = Contrast[1]
            tensormin = Contrast[0]
        calc = calc.transpose(1, 0)
        calc = ((calc - tensormin) / (tensormax - tensormin)) * 255.0
        calc = calc.transpose(1, 0)
        calc = calc.reshape((channel, tensor.shape[1], tensor.shape[2]))
        if not GridValue:
            GridValue = 128.0
        calc = F.pad(calc, (0, 0, 0, 0, 0, x * x - channel), mode="constant", value=GridValue)
        calc = calc.reshape((x, x, tensor.shape[1], tensor.shape[2]))
        calc = F.pad(calc, (0, 1, 0, 1, 0, 0), mode="constant", value=GridValue)
        tensor = calc.permute((0, 2, 1, 3))
        tensor = tensor.reshape((x * tensor.shape[1], x * tensor.shape[3]))
        DumpTensorToImage(tensor, name, forceSquare=False, scale=scale, Contrast=[0.0, 255.0], GridValue=GridValue)
        return

    tensor = tensor.float()
    if not Contrast:
        maxv = torch.max(tensor)
        minv = torch.min(tensor)
    else:
        maxv = Contrast[1]
        minv = Contrast[0]
    tensor = ((tensor - minv) / (maxv - minv)) * 255.0
    img = tensor.detach().cpu().numpy()
    srp = img.shape

    if len(srp) == 1:  # 1D的数据自动折叠成2D图像
        ceiled = math.ceil((srp[0]) ** 0.5)
        img = cv2.copyMakeBorder(img, 0, ceiled * ceiled - srp[0], 0, 0, 0)
        img = img.reshape((ceiled, ceiled))
        srp = img.shape
    if forceSquare:  # 拉伸成正方形
        img = cv2.resize(img, [max(srp), max(srp)])
        srp = img.shape
    if scale != 1.0:
        img = cv2.resize(img, [int(srp[0] * scale), int(srp[1] * scale)])
        srp = img.shape

    img = img * (-1)
    img = img + 255
    img[img < 0] = 0
    img = np.nan_to_num(img, nan=0.0)
    img[img > 255] = 255
    imgs = img.astype(np.uint8)
    imgs = cv2.applyColorMap(imgs, cv2.COLORMAP_JET)
    directory = Path(name).parent
    if not directory.is_dir():
        directory.mkdir(parents=True, exist_ok=True)
    cv2.imwrite(name, imgs)


def DumpTensorToLog(tensor, name="log"):
    shape = tensor.shape
    tensor_mean = torch.mean(tensor).cpu().detach().numpy()
    tensor_range = (torch.max(tensor) - torch.min(tensor)).cpu().detach().numpy()
    f = open(name, "w")
    f.writelines("tensor mean: %s" % tensor_mean + os.linesep)
    f.writelines("tensor range: %s" % tensor_range + os.linesep)
    data = tensor.reshape([-1]).float().cpu().detach().numpy().tolist()
    for d in data:
        f.writelines("%s" % d + os.linesep)
    f.close()


def DumpTensorToFile(tensor, name="tensor.pt"):
    torch.save(tensor.cpu(), name)


def LoadTensorToFile(name="tensor.pt"):
    return torch.load(name)


def DumpListToFile(list, name="list"):
    f = open(name, "w")
    for d in list:
        f.writelines("%s" % d + os.linesep)
    f.close()


prob_true = 0
prob_all = 0


def ProbGE0(tensor: torch.tensor):
    global prob_true
    global prob_all
    m = tensor.ge(0)
    prob_true = prob_true + m.sum().item()
    prob_all = prob_all + math.prod(tensor.shape)


def DumpProb():
    global prob_true
    global prob_all
    print("prob_true : " + str(prob_true))
    print("prob_all : " + str(prob_all))
    print("prob : " + str((prob_true * 100) / prob_all) + "%")