import math
from pyscript import document

def bereken(event):
	output = document.querySelector("#output")

	try:
		a = float(document.querySelector("#a").value)
		b = float(document.querySelector("#b").value)
		c = float(document.querySelector("#c").value)
	

		if a != 1:
			output.innerText = "Fout: a moet 1 zijn."
			return

		d = b**2 - 4*a*c

		if d < 0:  
			output.innerText = "Geen oplossing mogelijk"
			return

		else:
			x1 = round((-b + math.sqrt(d)) / (2*a),3)  
			x2 = round((-b - math.sqrt(d)) / (2*a),3)  


		def factor(x):
			if x < 0:
				return "(x+" + str(abs(x)) + ")"
			else:
				return "(x-" + str(x)+")"

		if d == 0:
			tekst = ( 
				f"De ontbonden vorm is: {factor(x1)}^2\n"
				"Gelijk stellen aan 0 geeft:\n"
				f"{factor(x1)} = 0\n"
				"Verder oplossen geeft:\n"
				f"x = {x1}"
			)

		else:
			tekst = ( 
				f"De ontbonden vorm is: {factor(x1)} {factor(x2)}\n"
				"Gelijk stellen aan 0 geeft:\n"
				f"{factor(x1)} = 0\n"
				f"{factor(x2)} = 0\n"
				"Verder oplossen geeft:\n"					
				f"x = {x1}\n"
				f"x = {x2}"
			)

		output.innerText = tekst

	except ValueError:
		output.innerText = "Fout: Vul geldige getallen in."

def reset(event):
	reset = document.querySelector("#reset")
	
	document.querySelector("#a").value = ""
	document.querySelector("#b").value = ""
	document.querySelector("#c").value = ""
	document.querySelector("#output").innerText = ""