from jmetal.algorithm.multiobjective.gde3 import GDE3
from jmetal.problem import ZDT2
from jmetal.util.comparator import GDominanceComparator
from jmetal.util.solution import (
    print_function_values_to_file,
    print_variables_to_file,
    read_solutions,
)
from jmetal.util.termination_criterion import StoppingByEvaluations

if __name__ == "__main__":
    problem = ZDT2()
    problem.reference_front = read_solutions(filename="resources/reference_front/ZDT2.pf")

    max_evaluations = 25000
    reference_point = [0.2, 0.5]

    algorithm = GDE3(
        problem=problem,
        population_size=100,
        cr=0.5,
        f=0.5,
        termination_criterion=StoppingByEvaluations(max_evaluations=max_evaluations),
        dominance_comparator=GDominanceComparator(reference_point),
    )

    algorithm.run()
    front = algorithm.get_result()

    # Save results to file
    print_function_values_to_file(front, "FUN." + algorithm.label)
    print_variables_to_file(front, "VAR." + algorithm.label)

    print(f"Algorithm: {algorithm.get_name()}")
    print(f"Problem: {problem.get_name()}")
    print(f"Computing time: {algorithm.total_computing_time}")
