"""This example is for Raspberry Pi (Linux) only!
   It will not work on microcontrollers running CircuitPython!"""

import sys
import math
import time
import busio
import board
import numpy as np
from scipy.interpolate import griddata
from colour import Color
import adafruit_amg88xx

I2C_BUS = busio.I2C(board.SCL, board.SDA)

# low range of the sensor (this will be blue on the screen)
MINTEMP = 26.0
# high range of the sensor (this will be red on the screen)
MAXTEMP = 32.0
COLORDEPTH = 1024
SENSOR = adafruit_amg88xx.AMG88XX(I2C_BUS)

# pylint: disable=invalid-slice-index
POINTS = [(math.floor(ix / 8), (ix % 8)) for ix in range(0, 64)]
GRID_X, GRID_Y = np.mgrid[0:7:32j, 0:7:32j]
# pylint: enable=invalid-slice-index

# sensor is an 8x8 grid so lets do a square
HEIGHT = 240
WIDTH = 240

# the list of colors we can choose from
BLUE = Color("indigo")
COLORS = list(BLUE.range_to(Color("red"), COLORDEPTH))

# create the array of colors
COLORS = [(int(c.red * 255), int(c.green * 255), int(c.blue * 255)) for c in COLORS]
CONSOLE_COLORS = [
    17,
    18,
    19,
    20,
    21,
    57,
    93,
    129,
    165,
    201,
    200,
    199,
    198,
    197,
    196,
    202,
    208,
    214,
    220,
]


def map_value(x_value, in_min, in_max, out_min, out_max):
    """Maps value of the temperature to color"""
    return (x_value - in_min) * (out_max - out_min) / (in_max - in_min) + out_min


def print_there(console_x, console_y, text, color):
    """ Outputs a colored text to console at coordinates """
    sys.stdout.write("\x1b7\x1b[48;5;%dm" % (color))
    sys.stdout.write("\x1b7\x1b[%d;%df%s\x1b8" % (console_x, console_y, text))


# let the sensor initialize
time.sleep(0.1)

COLOR_RANGE = 1
while True:

    # read the pixels
    PIXELS = []
    for row in SENSOR.pixels:
        PIXELS = PIXELS + row
    PIXELS = [map_value(p, MINTEMP, MAXTEMP, 0, COLORDEPTH - 1) for p in PIXELS]

    # perform interpolation
    BICUBIC = griddata(POINTS, PIXELS, (GRID_X, GRID_Y), method="cubic")

    MAXPIXEL = 0
    MINPIXEL = 0

    # draw everything
    Y_CONSOLE = 2
    for ix, row in enumerate(BICUBIC):
        x_console = 2
        for jx, pixel in enumerate(row):
            color_index = 0
            if COLOR_RANGE != 0:
                color_index = int(round((pixel - MINPIXEL) / COLOR_RANGE))
            if color_index < 0:
                color_index = 0
            if color_index > len(CONSOLE_COLORS) - 1:
                color_index = len(CONSOLE_COLORS) - 1
            print_there(x_console, Y_CONSOLE * 2 - 2, "  ", CONSOLE_COLORS[color_index])
            if pixel > MAXPIXEL:
                MAXPIXEL = pixel
            if pixel < MINPIXEL:
                MINPIXEL = pixel
            x_console += 1
        Y_CONSOLE += 1
    sys.stdout.flush()
    HEAT_RANGE = MAXPIXEL - MINPIXEL
    COLOR_RANGE = HEAT_RANGE / len(CONSOLE_COLORS)