/*
 * This program source code file is part of the KTag project, a DIY laser tag
 * game with customizable features and wide interoperability.
 *
 * 🛡 <https://ktag.clubk.club> 🃞
 *
 * Copyright © 2026 Joseph P. Kearney and the KTag developers.
 *
 * 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.
 *
 * There should be a copy of the GNU Affero General Public License in the LICENSE
 * file in the root of this repository.  If not, see <http://www.gnu.org/licenses/>.
 */

#include <stdio.h>
#include <stdlib.h>
#include <stdint.h>
#include <errno.h>
#include <limits.h>
#include "esp_console.h"
#include "esp_log.h"
#include "SystemK.h"

uint32_t parse_uint32(const char *str, bool *ok) {
    char *end;
    errno = 0;
    unsigned long val = strtoul(str, &end, 10);

    if (errno != 0 || end == str || *end != '\0' || val > UINT32_MAX) {
        *ok = false;
        return 0;
    }

    *ok = true;
    return (uint32_t)val;
}

static void print_usage(void)
{
    printf(
        "Usage:\n"
        "  KEvent <Event ID> <Event Data>\n"
        "  (Note that IDs may be SystemK version-dependant.)\n");
}

static int cmd_KEvent(int argc, char **argv)
{
    KEvent_T event;
    uint32_t data;

    if (argc < 2)
    {
        print_usage();
        return 0;
    }

    if (Parse_KEvent_ID(argv[1], &event) == SYSTEMK_RESULT_SUCCESS)
    {
        bool ok;
        data = parse_uint32(argv[2], &ok);
        if (ok == true)
        {
            event.Data = (void *)data;
            Post_KEvent(&event);
            return 0;
        }
        else
        {
            printf("ERROR: Couldn't parse data!");
            return(-1);
        }
    }
    else
    {
        printf("ERROR: Couldn't parse SystemK event!");
        return(-1);
    }
}

void Register_KEvent_Command(void)
{
    const esp_console_cmd_t cmd = {
        .command = "KEvent",
        .help = "Send arbitrary KEvents by ID",
        .func = &cmd_KEvent,
    };

    ESP_ERROR_CHECK(esp_console_cmd_register(&cmd));
}