from visdom import Visdom
import random
import numpy as np
import os
import time


def InitVisdom():
    # nohub python3 -m visdom.server > visdom.server.log 2 > &1
    # subprocess.Popen("python3 -m visdom.server > visdom.server.log 2>&1", shell=True)

    os.popen("python3 -m visdom.server > visdom.server.log 2>&1")
    time.sleep(3)  # to wait vindom.server started
    # viz = Visdom()
    # assert viz.check_connection()
    # viz.close()
    print("Connect http://localhost:8097")


class Line(object):
    def __init__(self, windows, name, size):
        super(Line, self).__init__()
        self.name = name
        self.size = size
        self.win = windows

    def __init__(self, windows):
        super(Line, self).__init__()
        self.name = str(random.random())
        self.size = 0
        self.win = windows

    def __init__(self, windows, name):
        super(Line, self).__init__()
        self.name = name
        self.size = 0
        self.win = windows

    def AppendData(self, y, x=None):
        self.win.AppendData(self, y, x)


class LineWin(object):
    def __init__(self):
        super(LineWin, self).__init__()
        self.viz = Visdom()
        self.name = str(random.random())
        self.win = self.viz.line(
            X=np.array([0]),
            Y=np.array([0]),
            name=self.name
        )
        self.data = np.array([])

    def AppendLine(self, y):
        if not isinstance(y, list):
            y = [y]
        linename = str(random.random())
        self.viz.line(
            X=np.array(range(len(y))),
            Y=np.array(y),
            opts=dict(markercolor=np.array([50]),
                      markersymbol='dot',),
            win=self.win,
            update="new",
            name=linename,
        )
        return Line(linename, len(y))

    def AppendData(self, line, y, x=None):
        y = [y]
        Y = np.array(y).reshape((-1))
        X = []
        if x:
            x = [x]
            X = np.array(X).reshape((-1))
        else:
            X = np.array(range(line.size, line.size+len(Y)))

        self.viz.line(
            Y=Y,
            X=X,
            win=self.win,
            update="append",
            name=line.name
        )
        line.size = line.size + len(y)