#include "input.h"
#include <string.h>
#include <ctype.h>
#include <stdio.h>

// TODO:
// eine Funktion implementieren, die ein einzelnes Wort aus einer Textdatei (words.txt) einliest und als C-String zurückgibt.

// Read words from file and store in 'words' array
static int createSingleWords(char text[MAX_LINE_LEN], char words[][MAX_WORD_LEN], unsigned int maxWordCount);

unsigned int readWords(FILE *file, char words[][MAX_WORD_LEN], unsigned int maxWordCount)
{
    int wordCount = 0;
    char lineRead[MAX_LINE_LEN];

    while(fgets(lineRead, MAX_LINE_LEN, file) != NULL && wordCount < (int)maxWordCount)
    {
        wordCount += createSingleWords(lineRead, words + wordCount, maxWordCount - wordCount);
    }

    return wordCount; //wordCount
}

static int createSingleWords(char text[MAX_LINE_LEN], char words[][MAX_WORD_LEN], unsigned int maxWordCount)
{
    char *teiler = " ;,.\n";
    char *token;
    
    int i = 0;

    token = strtok(text, teiler);

    while(token != NULL && i < maxWordCount)
    {
        strncpy(words[i], token, MAX_WORD_LEN - 1);
        //kleinbuchstaben --> GROßBUCHSTABEN
        int length = strlen(words[i]);
        for(int j = 0; j < length; j++)
        {
            if(islower(words[i][j]))
            {
                words[i][j] = toupper(words[i][j]);
            }
        }
        words[i][MAX_WORD_LEN - 1] = '\0';

        token = strtok(NULL, teiler);
        i++;
    }

    return i;
}