import os

import numpy as np


def _parse_calypso_input(var, input_path):
    if os.path.basename(input_path) != "input.dat":
        input_path = os.path.join(input_path, "input.dat")
    if not os.path.exists(input_path):
        raise FileNotFoundError(input_path)

    f = open(input_path)
    lines = f.readlines()
    f.close()

    for line in lines:
        if var in line:
            variable = line.split("=")[1].strip()
            return variable


def _parse_calypso_dis_mtx(numberofspecies, input_path):
    try:
        f = open(input_path)
    except Exception:
        f = open(os.path.join(input_path, "input.dat"))
    while True:
        line = f.readline()
        if len(line) == 0:
            break
        if "@DistanceOfIon" in line:
            dis = []
            for i in range(int(numberofspecies)):
                line = f.readline()
                dis.append(line.split())
            f.close()
            break
    dis = np.array(dis)
    dis = dis.reshape((1, int(numberofspecies) ** 2))
    return dis[0][np.argmin(dis)]
