#include <stdio.h>
#include <stdlib.h>
#include <string.h>
#include "stack.h"

void test_pushFailsOnNullPointer(StackNode *stack, void *data) {
    
    StackNode* test = push(NULL, data);
    if (test != 0) {
        printf("Pass test_pushFailsOnNullPointerStack\n");
    } else 
        printf("Did Not Pass test_pushFailsOnNullPointerStack EXPECTED StackNode\n");
  
    test = push(stack, NULL);
    if (test == 0) {
        printf("Pass test_pushFailsOnNullPointerData\n");
        return;
    }
    printf("Did Not Pass test_pushFailsOnNullPointerData EXPECTED 0\n");
    return;
}

void test_popFailsOnNullPointer() { //pop on null returns NULL
    
    StackNode* test = pop(NULL);
    if (test == 0) {
        printf("Pass test_popFailsOnNullPointerStack\n");
        return;
    }
    printf("Did Not Pass test_popFailsOnNullPointerStack EXPECTED 0\n");
    
    return;
}

void test_topFailsOnNullPointer() {
    
    int* test = (int*)top(NULL);
    if (test == 0) {
        printf("Pass test_topFailsOnNullPointerStack\n");
        return;
    }
    printf("Did Not Pass test_topFailsOnNullPointerStack EXPECTED 0\n");
    
    return;
}

int main()
{
    
    int test0 = 3;
    int* dataTest0 = &test0;
    StackNode *stack0 = push(NULL, dataTest0);

    char test1[5] = "test\0";
    char* dataTest1 = test1;

    float test2 = 3.14;
    float* dataTest2 = &test2;

    printf("============================\nstack tests\n============================\n");
    test_pushFailsOnNullPointer(stack0, dataTest0);
    test_popFailsOnNullPointer();
    test_topFailsOnNullPointer();

    StackNode *stack1 = push(stack0, dataTest1);
    if(strcmp(stack1->data ,dataTest1) == 0) {
        printf("Pass test_pushString\n");
    } else
        printf("Fails test_pushString\n expected: %s\n was: %s\n", dataTest1, (char*)(stack1->data));

    StackNode *stack2 = push(stack1, dataTest2);
    if(stack2->data == dataTest2) {
        printf("Pass test_pushFloat\n");
    } else
        printf("Fails test_pushFloat\n expected: %f\n was: %f\n", *dataTest2, *(float*)(stack2->data));

    int array[10] = {1,2,3,4,5,6,7,8,9,10};

    for(size_t i = 0; i<10; i++) {
        stack2 = push(stack2, &array[i]);
    }
    for(size_t i = 0; i<10; i++) {
        int* data = (int*)top(stack2);
        printf("%d\n", *data);
        stack2 = pop(stack2);
    }

    clearStack(stack2);

    return EXIT_SUCCESS;
}