#include<stdio.h>
#include<stdlib.h>
#include<string.h>
FILE *fptr;

struct dim_struct{
    int dimensions[3];
    int surfaces[3];
    int smallest_side;
    int smallest_side_id;
    int smallest_side_perimeter;
    int box_volume;
    int total_ribbon_for_item;
    int total_paper_for_item;
};// Fun fact: C expects a semicolon after the struct definition

int main(){
struct dim_struct myArray[1005];
fptr = fopen("2015_day_2_input.txt", "r");  
if(fptr == NULL) {
  printf("Not able to open the file.");
  return 1;
}
printf("hello\n");
long int line_count = 0;
int dim = 0;
int matrix[3][2] = { {0,1}, {1,2}, {2,0} };
int i;
int dim1, dim2;
char buffer[266];
while (fgets(buffer, sizeof(buffer), fptr)) {
    printf("%s\n",buffer);
    char delimiter = 'x';
    char *token, *saveptr;
    line_count++;
    for (token = strtok_r(buffer, &delimiter, &saveptr); token != NULL; token = strtok_r(NULL, &delimiter, &saveptr)) {
        printf("%s\n", token); // or process token
        myArray[line_count].dimensions[dim] = atoi(token);
        printf("\nwow\n%d\nwow\n",myArray[line_count].dimensions[dim]);
        dim++;
    }
    memset(buffer, 0, sizeof(buffer)); // clear the buffer to zero
    dim = 0;
}

printf("\n length of myArray = %lu\n", sizeof(myArray));
for (i=0; i<line_count+1; i++){
    myArray[i].surfaces[0] = myArray[i].dimensions[0] * myArray[i].dimensions[1];
    myArray[i].surfaces[1] = myArray[i].dimensions[1] * myArray[i].dimensions[2];
    myArray[i].surfaces[2] = myArray[i].dimensions[2] * myArray[i].dimensions[0];
    if ((myArray[i].surfaces[0] <= myArray[i].surfaces[1]) && (myArray[i].surfaces[0] <= myArray[i].surfaces[2])){
        myArray[i].smallest_side = myArray[i].surfaces[0];
        myArray[i].smallest_side_id = 0;
    }
    else if ((myArray[i].surfaces[1] <= myArray[i].surfaces[0]) && (myArray[i].surfaces[1] <= myArray[i].surfaces[2])){
        myArray[i].smallest_side = myArray[i].surfaces[1];
        myArray[i].smallest_side_id = 1;
    }
    else if ((myArray[i].surfaces[2] <= myArray[i].surfaces[0]) && (myArray[i].surfaces[2] <= myArray[i].surfaces[1])){
        myArray[i].smallest_side = myArray[i].surfaces[2];
        myArray[i].smallest_side_id = 2;
    }
    else {
        printf("ERROR!");
        exit(1);
    }
  
    myArray[i].total_paper_for_item = ((2 * (myArray[i].surfaces[0] + myArray[i].surfaces[1] + myArray[i].surfaces[2])) + myArray[i].smallest_side);
    printf("\ntotal paper for item = %d\n", myArray[i].total_paper_for_item);
    printf("surface 0 is %d, %d times %d\n", myArray[i].surfaces[0], myArray[i].dimensions[0] , myArray[i].dimensions[1]);
    printf("surface 1 is %d, %d times %d\n", myArray[i].surfaces[1], myArray[i].dimensions[1] , myArray[i].dimensions[2]);
    printf("surface 2 is %d, %d times %d\n", myArray[i].surfaces[2], myArray[i].dimensions[2] , myArray[i].dimensions[0]);
    printf("The smallest side of item %d is %d\n",i ,myArray[i].smallest_side);
  

    myArray[i].smallest_side_perimeter = (2 * myArray[i].dimensions[matrix[myArray[i].smallest_side_id][0]]) + (2 * myArray[i].dimensions[matrix[myArray[i].smallest_side_id][1]]); //don't love this, but it seems to be a fairly simple way to do it
    printf("\n perimeter of smallest side = %d\n", myArray[i].smallest_side_perimeter);
    myArray[i].box_volume = myArray[i].dimensions[0] * (myArray[i].dimensions[1] * myArray[i].dimensions[2]);
    myArray[i].total_ribbon_for_item = myArray[i].smallest_side_perimeter + myArray[i].box_volume;

}
for (i=0; i<line_count+1; i++){
    dim1 = dim1 + myArray[i].total_paper_for_item;
    dim2 = dim2 + myArray[i].total_ribbon_for_item;

}

fclose(fptr);
printf("\n\n Total paper needed: %d \n\n", dim1);
printf("\n\n Total ribbon needed: %d \n\n", dim2);

return 0;
}
//https://www.geeksforgeeks.org/how-to-create-an-array-of-structs-in-c/