#include <Python.h>

static PyObject* divide_points_into_groups(PyObject* self, PyObject* args) {
    PyObject* points_list;  // Input list of points
    if (!PyArg_ParseTuple(args, "O", &points_list)) {
        PyErr_SetString(PyExc_TypeError, "Expected a list of points.");
        return NULL;
    }

    // Check if the input is a list
    if (!PyList_Check(points_list)) {
        PyErr_SetString(PyExc_TypeError, "Input must be a list of points.");
        return NULL;
    }

    // Create a Python list to store groups
    PyObject* groups_list = PyList_New(0);

    // Iterate through the input points and divide them into groups
    // (Simplified logic - you should implement your own logic here)
    // In this example, we assume points are (x, y) pairs as Python tuples
    // and groups are lists of points.
    Py_ssize_t num_points = PyList_Size(points_list);
    PyObject* current_group = PyList_New(0);

    for (Py_ssize_t i = 0; i < num_points; i++) {
        PyObject* point = PyList_GetItem(points_list, i);
        PyObject* x_obj = PyTuple_GetItem(point, 0);
        PyObject* y_obj = PyTuple_GetItem(point, 1);

        // Process the point (x, y) here
        // (You should implement your grouping logic)

        // For simplicity, we add points to the current group
        PyList_Append(current_group, point);

        // Assume a condition for creating a new group (e.g., x > 50)
        if (PyLong_AsLong(x_obj) > 50) {
            PyList_Append(groups_list, current_group);
            current_group = PyList_New(0);
        }
    }

    // Append the last group if it's not empty
    if (PyList_Size(current_group) > 0) {
        PyList_Append(groups_list, current_group);
    }

    return groups_list;
}

static PyMethodDef methods[] = {
    {"divide_points_into_groups", divide_points_into_groups, METH_VARARGS, "Divide points into groups."},
    {NULL, NULL, 0, NULL}
};

static struct PyModuleDef module = {
    PyModuleDef_HEAD_INIT,
    "point_extension",
    NULL,
    -1,
    methods
};

PyMODINIT_FUNC PyInit_point_extension(void) {
    return PyModule_Create(&module);
}