//
//   ch341eeprom programmer version 0.1 (Beta)
//
//   Programming tool for the 24Cxx serial EEPROMs using the Winchiphead CH341A
//   IC
//
//   (c) December 2011 asbokid <ballymunboy@gmail.com>
//
//   This program is free software: you can redistribute it and/or modify
//   it under the terms of the GNU 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 General Public License for more details.
//
//   You should have received a copy of the GNU General Public License
//   along with this program.  If not, see <http://www.gnu.org/licenses/>.
#define CH341TOOLVERSION "0.5-fv1-heckmod"

#include <getopt.h>
#include <stdint.h>
#include <stdio.h>
#include <stdlib.h>
#include <string.h>
#include "libch341eeprom.h"
#include "libch341eeprom_internal.h"

int main(int argc, char **argv)
{
    uint8_t debug = FALSE;
    uint8_t verbose = TRUE;

    // in struct
    int eepromsize = 4096;
    char *filename = NULL;
    char *eepromname = strdup("24c32");
    char operation = 0;

    static char
        version_msg[] = "fvflash - an i2c EEPROM programming tool for the WCH CH341a IC\n"
                        "Version " CH341TOOLVERSION
                        " copyright (c) 2011  asbokid <ballymunboy@gmail.com>\n\n"
                        "modified by <heck@heck.live> for the specific use case of fv-1 "
                        "programming on macos\n\n"
                        "This program comes with asbolutely no warranty; This is free software,\n"
                        "and you are welcome to redistribute it under certain conditions:\n"
                        "GNU GPL v3 License: http://www.gnu.org/licenses/gpl.html\n";

    static char usage_msg[] = "Usage:\n"
                              " fvflash [options] [operation] filename\n"
                              " writes filename into fv1 (must be in bin format)\n\n"

                              "operation:\n"
                              " default operation is write fv1\n"
                              " -e, --erase            erase fv1 (fill with 0xff)\n"
                              " -r, --read  <filename> read fv1 and save image to filename\n\n"

                              "options:\n"
                              " -h, --help             display this text\n"
                              " -d, --debug            debug output\n"
                              " -s, --size             size of fv1 {24c32|24c64} default=24c32\n\n"

                              "Example:  fvflash bank.bin - writes bank.bin into fv1\n";

    static struct option longopts[] = {
        { "help", no_argument, 0, 'h' },       { "debug", no_argument, 0, 'd' },
        { "erase", no_argument, 0, 'e' },      { "size", required_argument, 0, 's' },
        { "read", required_argument, 0, 'r' }, { 0, 0, 0, 0 }
    };

    int32_t last_optidx = 0;

    while (TRUE) {
        int32_t optidx = 0;
        int8_t c = getopt_long(argc, argv, "hdes:r:", longopts, &optidx);
        if (c == -1) {
            break;
        }

        switch (c) {
            case 'h':
                fprintf(stdout, "%s\n%s", version_msg, usage_msg);
                return 0;
            case 'd':
                debug = TRUE;
                break;
            case 's':
                if ((eepromsize = parseEEPsize(optarg)) > 0) {
                    strcpy(eepromname, optarg);
                } else {
                    fprintf(stderr, "Invalid EEPROM name %s \n", optarg);
                    exit(-4);
                }
                break;
            case 'e':
                if (!operation)
                    operation = 'e';
                else {
                    fprintf(stderr, "Conflicting command line options\n");
                    exit(1);
                }
                break;
            case 'r':
                if (!operation) {
                    operation = 'r';
                    filename = (char *)malloc(strlen(optarg) + 1);
                    strcpy(filename, optarg);
                } else {
                    fprintf(stderr, "Conflicting command line options\n");
                    exit(1);
                }
                break;
            default:
            case '?':
                fprintf(stdout, "%s\bn", version_msg);
                fprintf(stderr, "%s", usage_msg);
                exit(2);
        }
        last_optidx = optidx;
    }

    if (!operation) {
        if (argc < 2) {
            fprintf(stderr, "%s", usage_msg);
            exit(-3);
        }
        printf("writing %s\n", argv[argc - 1]);
        operation = 'w';
        filename = (char *)malloc(strlen(argv[argc - 1]) + 1);
        strcpy(filename, argv[argc - 1]);
    }

    ch341_operation_desc opdesc;
    opdesc.operation = operation;
    opdesc.eepromname = eepromname;
    opdesc.filename = filename;
    ch341_operation(opdesc);
}