#include <stdio.h>
#include <stdlib.h>

struct PlayerScore {
    char name[20];
    int score;
    struct PlayerScore *next;
};
void newStruct(struct PlayerScore **currentPtr)
{
    (*currentPtr)->next = malloc(sizeof(struct PlayerScore));
    (*currentPtr) = (*currentPtr)->next;
    (*currentPtr)->next = NULL;
}
void FreeMemory(struct PlayerScore **currentPtr)
{
    struct PlayerScore *temp = NULL;

    while ((*currentPtr) != NULL) {
        temp = (*currentPtr);
        (*currentPtr) = (*currentPtr)->next;
        free(temp);
    }
}
void Input(struct PlayerScore **current)
{

    printf("INPUT NAME!: ");
    fgets((*current)->name, 20, stdin);
    (*current)->name[strlen((*current)->name) - 1] = '\0';
    (*current)->score = 100;
}
void OutPutt(struct PlayerScore **currentPtr, struct PlayerScore **tailPtr)
{
    while ((*currentPtr) != NULL) {

        printf("\nName: %s\nScore: %d\n", (*currentPtr)->name, (*currentPtr)->score);

        if ((*currentPtr)->next == NULL){
            (*tailPtr) = (*currentPtr);
        }

        (*currentPtr) = (*currentPtr)->next;
    }
}
int openFile(FILE **textFilePtr, char wordPtr[13], fpos_t *textFilePos)
{
    (*textFilePtr) = fopen(wordPtr, "r");

    if ((*textFilePtr) == NULL) {
        printf("It was not possible to open the file.\n");
        return 0;
    }

    fgetpos((*textFilePtr), &(*textFilePos));
    return 1;
}
void fillList(FILE **textFilePtr, struct PlayerScore **currentPtr, struct PlayerScore **tailPtr, char test[20], char linePtr[20])
{
    int i = 0;
    while ((fgets(linePtr, 256, *textFilePtr) != NULL))  {
        i++;

        if (strstr(linePtr, test)) {
            (*currentPtr)->name = *textFilePtr;
            (*currentPtr) = (*currentPtr)->next;
            printf("%d, ", i);

        }
    }


}
int main()
{
    struct PlayerScore *root = NULL;
    struct PlayerScore *current = NULL;
    struct PlayerScore *tail = NULL;

    FILE *textFile = NULL;
    fpos_t textFilePos;

    int running = 1;
    int workingFile;
    char line[20];
    char test[20] = "?";
    char file[20] = "highscore.txt";

    workingFile = openFile(&textFile, file, &textFilePos);
    root = malloc(sizeof(struct PlayerScore));
    root->next = NULL;
    current = root;
    fillList(&textFile, &current, &tail, test, line);
    while (running)
    {
        Input(&current);
        newStruct(&current);
        Input(&current);
        running = 0;
    }
    current = root;
    OutPutt(&current, &tail);

    FreeMemory(&root);
    if (textFile != NULL) {
        fclose(textFile);
    }
    scanf("%d", &running);
    return 0;
}