#include <signal.h>
#include <stdio.h>
#include <stdlib.h>
#include <string.h>
#include <time.h>
#include <unistd.h>

#define MAX_WORDS 14
#define MAX_TRIES 6

const char *words[MAX_WORDS] = {
    "programmation",
    "ordinateur",
    "langage",
    "jeu",
    "algorithmique",
    "fontainebleau",
    "koala",
    "anticonstitutionnellement",
    "code",
    "canard",
    "gyroscope",
    "periclitation",
    "susurrer",
    "eclesiastique"
};

void display_hangman(int tries) {
    switch (tries) {
        case 0: printf("  ----\n  |  |\n  |\n  |\n  |\n  |\n--------\n"); break;
        case 1: printf("  ----\n  |  |\n  |  O\n  |\n  |\n  |\n--------\n"); break;
        case 2: printf("  ----\n  |  |\n  |  O\n  |  |\n  |\n  |\n--------\n"); break;
        case 3: printf("  ----\n  |  |\n  |  O\n  | /|\n  |\n  |\n--------\n"); break;
        case 4: printf("  ----\n  |  |\n  |  O\n  | /|\\\n  |\n  |\n--------\n"); break;
        case 5: printf("  ----\n  |  |\n  |  O\n  | /|\\\n  | /\n  |\n--------\n"); break;
        case 6: printf("  ----\n  |  |\n  |  O\n  | /|\\\n  | / \\\n  |\n--------\n"); break;
    }
}

/*
this function allow to save the last party

Parameters:
    status -> state that save if the gamer win or lose the party
    good_word -> the word to guess
    try -> the wrong letters try by the gamer 
    cpt_try -> the try's table size
    good_try -> the good letters try by the gamer
    cpt_good_try -> the good_try's table size
*/
void save_party(char * status, const char * good_word, char try[], int cpt_try, char good_try[], int cpt_good_try) {
    time_t t;
    time(&t); //stock the current time
    char * date;
    date = ctime(&t); //stock the current time format as: day, month, number of the month, hour, year

    FILE* fichier = fopen("save_party.txt", "w");

    if (fichier != NULL)
    {
        fputs("Date and time: ", fichier);
        fputs(date,fichier);
        fputs("\n",fichier);

        fputs("Status: ", fichier);
        fputs(status,fichier);
        fputs("\n",fichier);

        fputs("Good word: ", fichier);
        fputs(good_word,fichier);
        fputs("\n",fichier);

        fputs("tried letters: ", fichier);
        for (int i = 0; i < cpt_try; i++) {
            fputc(try[i],fichier);
        }
        fputs("\n",fichier);

        fputs("guessed letters: ", fichier);
        for (int i = 0; i < cpt_good_try; i++) {
            fputc(good_try[i],fichier);
        }
        fputs("\n",fichier);
        
        fclose(fichier); // Close the opened file
    }
}

/* this function display time out when user does nothing during 30s and verify signal*/
void sig_handler(int signum){
    if (signum == SIGALRM){

        printf("\ntime out\n");
        exit (1);
    }
}

/*
getWordByLength() function adds the possibility to the user to choose how many letters maximum the word to guess can contains.

Returns:
    A random word from the words list that correspond to the user input
*/
const char* getWordByLength(){
    int maxLetters;
    printf("Difficulté - Entrez le nombre de lettres maximum à deviner : ");
    scanf(" %d", &maxLetters);
    const char *newWords[MAX_WORDS];
    int wordsFound = 0;
    for (int i = 0; i < MAX_WORDS; i++) {
        if(strlen(words[i]) <= maxLetters){
            newWords[wordsFound] = words[i];
            wordsFound++;
        }
    }
    if(wordsFound==0){
        return "";
    }
    const char *word = newWords[rand() % wordsFound];
    /* SECOND WORD TO GUESS (NOT WORKING)
    wordsFound = 0;
    for (int i = 0; i < MAX_WORDS; i++) {
        if(strlen(words[i]) <= maxLetters-strlen(word)){
            newWords[wordsFound] = words[i];
            wordsFound++;
        }
    }
    if(wordsFound != 0){
        word = (const char*) strcat((char *) word, newWords[rand() % wordsFound]);
    }*/
    return word;
}

int main() {
    srand(time(NULL));
    const char *word = getWordByLength();
    if(word==""){
        printf("Aucun mot n'a été trouvé.");
        return 1;
    }
    int word_length = strlen(word);
    char guessed[word_length];
    int tries = 0;
    int guessed_correctly = 0;
    char try[MAX_TRIES]; //save the carcater false
    char good_try[word_length]; //save the carcater good
    int cpt = 0;

    signal(SIGALRM,sig_handler);

    signal(SIGALRM,sig_handler);

    for (int i = 0; i < word_length; i++) {
        guessed[i] = '_';
    }
    guessed[word_length] = '\0';

    while (tries < MAX_TRIES && guessed_correctly < word_length) {

        printf("\nMot à deviner : %s\n", guessed);
        display_hangman(tries);
        char guess;
        alarm(30);
        printf("Entrez une lettre : ");
        alarm(30);
        scanf(" %c", &guess);
        

        int found = 0;

        for (int i = 0; i < word_length; i++) {
            if (word[i] == guess) {
                if (guessed[i] == '_') {
                    guessed[i] = guess;
                    guessed_correctly++;
                }
                found = 1;
            }
        }

        if (!found) {
            try[tries] = guess;
            tries++;
        }else{
            good_try[cpt] = guess;
            cpt++;
        }
    }

    if (guessed_correctly == word_length) {
        printf("Félicitations ! Vous avez deviné le mot : %s\n", word);
        save_party("Win", word, try, tries, good_try, cpt);
    } else {
        printf("Désolé, vous avez perdu. Le mot était : %s\n", word);
        display_hangman(MAX_TRIES);
        save_party("Lose", word, try, tries, good_try, cpt); 
    }

    return 0;
}