package renderer

import (
	"math"
)

var ascii = map[string]float64{
	" ":0,
	"`":0.0751,
	".":0.0829,
	"-":0.0848,
	"'":0.1227,
	":":0.1403,
	"_":0.1559,
	",":0.185,
	"^":0.2183,
	"=":0.2417,
	";":0.2571,
	">":0.2852,
	"<":0.2902,
	"+":0.2919,
	"!":0.3099,
	"r":0.3192,
	"c":0.3232,
	"*":0.3294,
	"/":0.3384,
	"z":0.3609,
	"?":0.3619,
	"s":0.3667,
	"L":0.3737,
	"T":0.3747,
	"v":0.3838,
	")":0.3921,
	"J":0.396,
	"7":0.3984,
	"(":0.3993,
	"|":0.4075,
	"F":0.4091,
	"i":0.4101,
	"{":0.42,
	"C":0.423,
	"}":0.4247,
	"f":0.4274,
	"I":0.4293,
	"3":0.4328,
	"1":0.4382,
	"t":0.4385,
	"l":0.442,
	"u":0.4473,
	"[":0.4477,
	"n":0.4503,
	"e":0.4562,
	"o":0.458,
	"Z":0.461,
	"5":0.4638,
	"Y":0.4667,
	"x":0.4686,
	"j":0.4693,
	"y":0.4703,
	"a":0.4833,
	"]":0.4881,
	"2":0.4944,
	"E":0.4953,
	"S":0.4992,
	"w":0.5509,
	"q":0.5567,
	"k":0.5569,
	"P":0.5591,
	"6":0.5602,
	"h":0.5602,
	"9":0.565,
	"d":0.5776,
	"4":0.5777,
	"V":0.5818,
	"p":0.587,
	"O":0.5972,
	"G":0.5999,
	"b":0.6043,
	"U":0.6049,
	"A":0.6093,
	"K":0.6099,
	"X":0.6465,
	"H":0.6561,
	"m":0.6595,
	"8":0.6631,
	"R":0.6714,
	"D":0.6759,
	"#":0.6809,
	"$":0.6816,
	"B":0.6925,
	"g":0.7039,
	"0":0.7086,
	"M":0.7235,
	"N":0.7302,
	"W":0.7332,
	"Q":0.7602,
	"%":0.7834,
	"&":0.8037,
	"@":0.9999,
}

func GetChar(brightness float64) string {
	var char string = " "
	var delta float64 = 1
	for k, v := range ascii {
		otherDelta := math.Abs(v - brightness)
		if (otherDelta < delta) {
			delta = otherDelta
			char = k
		}
	}
	return char
}