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#include <Python.h>
#include "pyirssi.h"
#include "pymodule.h"
#include "command-object.h"
#include "pycore.h"

#define COMMAND(cmd) ((COMMAND_REC *)cmd)

/* monitor "commandlist remove" signal */
static void command_cleanup(COMMAND_REC *command)
{
    PyCommand *pycommand = signal_get_user_data();

    if (command == pycommand->data)
    {
        pycommand->data = NULL;
        pycommand->cleanup_installed = 0;
        signal_remove_data("commandlist remove", command_cleanup, pycommand);
    }
}

static void PyCommand_dealloc(PyCommand *self)
{
    if (self->cleanup_installed)
        signal_remove_data("commandlist remove", command_cleanup, self); 

    self->ob_type->tp_free((PyObject*)self);
}

static PyObject *PyCommand_new(PyTypeObject *type, PyObject *args, PyObject *kwds)
{
    PyCommand *self;

    self = (PyCommand *)type->tp_alloc(type, 0);
    if (!self)
        return NULL;

    return (PyObject *)self;
}

/* Getters */
PyDoc_STRVAR(PyCommand_cmd_doc,
    "Command name"
);
static PyObject *PyCommand_cmd_get(PyCommand *self, void *closure)
{
    RET_NULL_IF_INVALID(self->data);
    RET_AS_STRING_OR_NONE(COMMAND(self->data)->cmd);
}

PyDoc_STRVAR(PyCommand_category_doc,
    "Category"
);
static PyObject *PyCommand_category_get(PyCommand *self, void *closure)
{
    RET_NULL_IF_INVALID(self->data);
    RET_AS_STRING_OR_NONE(COMMAND(self->data)->category);
}

/* specialized getters/setters */
static PyGetSetDef PyCommand_getseters[] = {
    {"cmd", (getter)PyCommand_cmd_get, NULL,
        PyCommand_cmd_doc, NULL},
    {"category", (getter)PyCommand_category_get, NULL,
        PyCommand_category_doc, NULL},
    {NULL}
};

/* Methods */
/* Methods for object */
static PyMethodDef PyCommand_methods[] = {
    {NULL}  /* Sentinel */
};

PyTypeObject PyCommandType = {
    PyObject_HEAD_INIT(NULL)
    0,                         /*ob_size*/
    "Command",            /*tp_name*/
    sizeof(PyCommand),             /*tp_basicsize*/
    0,                         /*tp_itemsize*/
    (destructor)PyCommand_dealloc, /*tp_dealloc*/
    0,                         /*tp_print*/
    0,                         /*tp_getattr*/
    0,                         /*tp_setattr*/
    0,                         /*tp_compare*/
    0,                         /*tp_repr*/
    0,                         /*tp_as_number*/
    0,                         /*tp_as_sequence*/
    0,                         /*tp_as_mapping*/
    0,                         /*tp_hash */
    0,                         /*tp_call*/
    0,                         /*tp_str*/
    0,                         /*tp_getattro*/
    0,                         /*tp_setattro*/
    0,                         /*tp_as_buffer*/
    Py_TPFLAGS_DEFAULT | Py_TPFLAGS_BASETYPE, /*tp_flags*/
    "PyCommand objects",           /* tp_doc */
    0,		               /* tp_traverse */
    0,		               /* tp_clear */
    0,		               /* tp_richcompare */
    0,		               /* tp_weaklistoffset */
    0,		               /* tp_iter */
    0,		               /* tp_iternext */
    PyCommand_methods,             /* tp_methods */
    0,                      /* tp_members */
    PyCommand_getseters,        /* tp_getset */
    0,          /* tp_base */
    0,                         /* tp_dict */
    0,                         /* tp_descr_get */
    0,                         /* tp_descr_set */
    0,                         /* tp_dictoffset */
    0,      /* tp_init */
    0,                         /* tp_alloc */
    PyCommand_new,                 /* tp_new */
};


/* command factory function */
PyObject *pycommand_new(void *command)
{
    PyCommand *pycommand;

    pycommand = py_inst(PyCommand, PyCommandType);
    if (!pycommand)
        return NULL;

    pycommand->data = command;
    pycommand->cleanup_installed = 1;
    signal_add_last_data("commandlist remove", command_cleanup, pycommand);

    return (PyObject *)pycommand;
}

int command_object_init(void) 
{
    g_return_val_if_fail(py_module != NULL, 0);

    if (PyType_Ready(&PyCommandType) < 0)
        return 0;
    
    Py_INCREF(&PyCommandType);
    PyModule_AddObject(py_module, "Command", (PyObject *)&PyCommandType);

    return 1;
}