#   pyRCV2: Preferential vote counting
#   Copyright © 2020–2021  Lee Yingtong Li (RunasSudo)
#
#   This program is free software: you can redistribute it and/or modify
#   it under the terms of the GNU Affero General Public License as published by
#   the Free Software Foundation, either version 3 of the License, or
#   (at your option) any later version.
#
#   This program is distributed in the hope that it will be useful,
#   but WITHOUT ANY WARRANTY; without even the implied warranty of
#   MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
#   GNU Affero General Public License for more details.
#
#   You should have received a copy of the GNU Affero General Public License
#   along with this program.  If not, see <https://www.gnu.org/licenses/>.

import pyRCV2.numbers
from pyRCV2.numbers import Num
import tests.util

def maketst(numbers, dps, method, result):
	def t_py():
		pyRCV2.numbers.set_numclass(getattr(pyRCV2.numbers, numbers))
		pyRCV2.numbers.set_dps(dps)
		
		num1 = Num('314.15')
		num2 = Num('42.42')
		
		assert getattr(num1, method)(num2) == Num(result)
	
	def t_js():
		ctx = tests.util.init_context()
		
		ctx.eval('py.pyRCV2.numbers.set_numclass(py.pyRCV2.numbers.{});'.format(numbers))
		ctx.eval('py.pyRCV2.numbers.set_dps({});'.format(dps))
		
		ctx.eval('let num1 = py.pyRCV2.numbers.Num("314.15");')
		ctx.eval('let num2 = py.pyRCV2.numbers.Num("42.42");')
		
		assert ctx.eval('num1.{}(num2).__eq__(py.pyRCV2.numbers.Num("{}"))'.format(method, result))
	
	return t_py, t_js

test_fixed2_add_py, test_fixed2_add_js = maketst('Fixed', 2, '__add__', '356.57')
test_fixed1_add_py, test_fixed1_add_js = maketst('Fixed', 1, '__add__', '356.6')
test_fixed0_add_py, test_fixed0_add_js = maketst('Fixed', 0, '__add__', '356')
test_rational_add_py, test_rational_add_js = maketst('Rational', 0, '__add__', '356.57')

def maketst_round(numbers, dps, num, dps_round, mode_round, result):
	def t_py():
		pyRCV2.numbers.set_numclass(getattr(pyRCV2.numbers, numbers))
		pyRCV2.numbers.set_dps(dps)
		
		num1 = Num(num)
		assert num1.round(dps_round, getattr(num1, mode_round)) == Num(result)
	
	def t_js():
		ctx = tests.util.init_context()
		
		ctx.eval('py.pyRCV2.numbers.set_numclass(py.pyRCV2.numbers.{});'.format(numbers))
		ctx.eval('py.pyRCV2.numbers.set_dps({});'.format(dps))
		
		ctx.eval('let num1 = py.pyRCV2.numbers.Num("{}");'.format(num))
		assert ctx.eval('num1.round({}, num1.{}).__eq__(py.pyRCV2.numbers.Num("{}"))'.format(dps_round, mode_round, result))
	
	return t_py, t_js

test_fixed_round1_py, test_fixed_round1_js = maketst_round('Fixed', 5, '3141.59', 1, 'ROUND_DOWN', '3141.5')
test_fixed_round2_py, test_fixed_round2_js = maketst_round('Fixed', 5, '3141.59', 1, 'ROUND_UP', '3141.6')
test_native_round1_py, test_native_round1_js = maketst_round('Native', 0, '3141.59', 1, 'ROUND_DOWN', '3141.5')
test_native_round2_py, test_native_round2_js = maketst_round('Native', 0, '3141.59', 1, 'ROUND_UP', '3141.6')
test_rational_round1_py, test_rational_round1_js = maketst_round('Rational', 0, '3141.59', 1, 'ROUND_DOWN', '3141.5')
test_rational_round2_py, test_rational_round2_js = maketst_round('Rational', 0, '3141.59', 1, 'ROUND_UP', '3141.6')