#include "encode.h"
#include <stdbool.h>
#include <stdio.h>

int encode_main(int argc, char* argv[])
{
    bool encoding = true;
    FILE *input_file = fopen(argv[2], "rb");
    if (input_file == NULL) {
        fprintf(stderr, "Error opening input file: %s\n", argv[2]);
        return 1;
    }
    FILE *output_file = fopen(argv[3], "wb");
    if (output_file == NULL) {
        fprintf(stderr, "Error opening output file: %s\n", argv[3]);
        fclose(input_file);
        return 1;
    }
    while (encoding)
    {
        // Read data 
        unsigned char buffer[512];
        size_t bytes_read = fread(buffer, 1, sizeof(buffer), input_file);

        if (bytes_read == 0) {
            if (feof(input_file)) {
                encoding = false; // eof reached
            } else {
                fprintf(stderr, "Error reading from input file\n");
                fclose(input_file);
                fclose(output_file);
                return 1;
            }
        }

        // Encode data
        unsigned char encoded_data_high[sizeof(buffer)];
        unsigned char encoded_data_low[sizeof(buffer)];
        encode_value(buffer, encoded_data_high, encoded_data_low);

        // Write data
        fwrite(encoded_data_high, 1, bytes_read, output_file);
        fwrite(encoded_data_low, 1, bytes_read, output_file);
    }
    return 0;
}