#include "channel.h"
#include <stdio.h>
#include <stdint.h>

int channel_main(int argc, char* argv[])
{
    FILE *input_file = fopen(argv[2], "rb");
    if (!input_file) {
        fprintf(stderr, "Error opening input file: %s\n", argv[2]);
        return 1;
    }
    FILE *output_file = fopen(argv[3], "wb");
    if (!output_file) {
        fprintf(stderr, "Error opening output file: %s\n", argv[3]);
        fclose(input_file);
        return 1;
    }

    uint8_t buffer[1024], processed[1024];
    size_t bytes_read;
    while ((bytes_read = fread(buffer, 1, sizeof(buffer), input_file)) > 0) {
        for (size_t i = 0; i < bytes_read; i++) {
            processed[i] = channel_change_one_random_bit(buffer[i]);
        }
        fwrite(processed, 1, bytes_read, output_file);
    }
    fclose(input_file);
    fclose(output_file);
    printf("Channel completed successfully.\n");
    return 0;
}