import matplotlib
from matplotlib.figure import Figure
from matplotlib import style
import numpy as np

from .globals import *

style.use("ggplot")
       

class Plot():
  def __init__(self, points, lines = 1):
    matplotlib.use('TkAgg')
    self.fig = Figure()
    self.ax = self.fig.add_subplot(111)
    self.xs = range(points)
    self.ys = np.ndarray(shape=(lines, points), dtype=float)
    self.i = 0
    self.points = points
    self.plots = [None] * lines
    for p in range(lines):
      self.plots[p], = self.ax.plot(self.xs, self.ys[p], "#00A3E0", label="{}. Graph".format(p+1))
    
    self.ax.legend(bbox_to_anchor=(0, 1.02, 1, .102), loc=3, ncol=2, borderaxespad=0)

  def setTitle(self, title):
    self.ax.set_title(title)

  def update(self, values):

    self.ax.draw_artist(self.ax.patch)
    for p in range(len(self.plots)):
      self.ys[p] = np.append([values[p]], self.ys[p][:-1])
      self.plots[p].set_ydata(self.ys[p])
      self.ax.draw_artist(self.plots[p])
    
    self.fig.canvas.draw()

    self.i = (self.i+1) % self.points