#include <stdio.h>
#include <stdlib.h>
#include <time.h>
#include <math.h>
#include <stdint.h>
#include <wchar.h>
#include <locale.h>

void printGrid(int gridX, int gridY, int **arr) {
    // print the array for debugging
    wprintf(L"%lc", 0x2554);
    for(int j = 0; j < gridY; j++) {
        wprintf(L"%lc", 0x2550);
    }
    wprintf(L"%lc", 0x2557);
    wprintf(L"\n");
    for(int j = 0; j < gridY; j++) {
        wprintf(L"%lc", 0x2551);
        for(int i = 0; i < gridX; i++) {
            wprintf(L"%lc", ((arr[i][j] == 1) ? 0x0023 : 0x0020));
        }
        wprintf(L"%lc\n", 0x2551);
    }
    wprintf(L"%lc", 0x255A);
    for(int j = 0; j < gridY; j++) {
        wprintf(L"%lc", 0x2550);
    }
    wprintf(L"%lc", 0x255D);

    return;
}

int main(int argc, char *argv[]) {
    if(argc < 3) {
        printf("Usage: conway <xsize> <ysize> [seed]\n");
        exit(255);
    }
    setlocale(LC_CTYPE, "");
    int gridX, gridY, seed = 0, generation = 0;
    for(int i = argc - 1; i > 0; i--) {
        switch(i) {
        case 1:
            gridX = atoi(argv[i]);
            break;
        case 2:
            gridY = atoi(argv[i]);
            break;
        case 3:
            seed = atoi(argv[i]);
            break;
        }
    }
    if(seed == 0) {
        time_t t;
        srand((unsigned) time(&t));
    } else {
        srand(seed);
    }
    // dynamically allocate the 2D array, could be quite large!
    int *arr[gridX];
    for(int i = 0; i < gridY; i++) {
        arr[i] = (int *)malloc(gridY * sizeof(int));
    }
    // seed the array
    for(int i = 0; i < gridX; i++) {
        for(int j = 0; j < gridY; j++) {
            arr[i][j] = (rand() % 2 == 0) ? 1 : 0;
        }
    }
    printGrid(gridX, gridY, arr);

    return 0;
}