#include "input.h"
#include <string.h>
#include <ctype.h>
#define DELIM_COUNT 4

int find_delim(const char* line, char delim_list[DELIM_COUNT]){
    int i = 0;
    while(line[i]  != '\n'){
        for(int j = 0; j < DELIM_COUNT; j++){
            if(line[i] == delim_list[j])
                return i;
        }
        i++;
    }
    return i;
}

// 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
int readWords(FILE *file, char words[][MAX_WORD_LEN], unsigned int maxWordCount)
{
    char line[MAX_LINE_LEN];
    int count = 0;
    int word_end = 0;
    int word_start = 0;
    char delim_list[DELIM_COUNT] = {'\n', ';', ',', ' '}; 
    while (fgets(line, MAX_LINE_LEN, file) != NULL &&
           count < maxWordCount)
    {
        word_end = 0;
        word_start = 0;
        while(line[word_start ? word_start - 1 : 0] != '\n' && count < maxWordCount){
            word_end = find_delim(line + word_start, delim_list);
            // Wort ins Array kopieren
            if(word_end) {
                    strncpy(words[count], line + word_start, word_end);
                words[count][word_end] = '\0';

                // In Großbuchstaben umwandeln
                for (int i = 0; words[count][i] != '\0'; i++)
                {
                    words[count][i] = toupper((unsigned char)words[count][i]);
                }
                count++;
            }
            word_start += word_end + 1;
        }

    }
    return count;
}