//Importiere wichtige Bibliotheken
#include <stdio.h>
#include <stdlib.h>

//Definiere Feldgröße
#define ROWS 6
#define COLS 7

// Definiere Farben
#define RESET_COLOR "\033[0m"
#define BLACK "\033[0;30m"
#define RED "\033[0;31m"
#define GREEN "\033[0;32m"
#define YELLOW "\033[0;33m"
#define BLUE "\033[0;34m"
#define MAGENTA "\033[0;35m"
#define CYAN "\033[0;36m"
#define WHITE "\033[0;37m"


//Funktionsprototyp für initializeBoard
void initializeBoard(char board[ROWS][COLS]);

//Funktionsprototyp für printBoard
void printBoard(char board[ROWS][COLS]);

// Funktionsprototyp für clearScreen
void clearScreen();

//Funktionsprototyp für isColumnFull
int isColumnFull(char board[ROWS][COLS], int col);

//Funktionsprototyp für dropPiece
int dropPiece(char board[ROWS][COLS], int col, char player);
//Funktionsprototyp für checkWin
int checkWin(char board[ROWS][COLS], char player);
// Funktionsprototyp für checkHorizontal
int checkHorizontal(char board[ROWS][COLS], char player);

// Funktionsprototyp für checkVertical
int checkVertical(char board[ROWS][COLS], char player);

// Funktionsprototyp für checkDiagonalLR
int checkDiagonalLR(char board[ROWS][COLS], char player);

// Funktionsprototyp für checkDiagonalRL
int checkDiagonalRL(char board[ROWS][COLS], char player);

// Funktionsprototyp für showMessage
void showMessage(const char* messageColor, const char* message);
//Funktionsprototyp für showInvalidInputMessage 
void showInvalidInputWarning();

//Funktionsprototyp für showColumnFullMessage
void showColumnFullMessage();

//Funktionsprototyp für showWinMessage
void showWinMessage(int player);


//Write starter function
int main_function() {
    char board[ROWS][COLS];
    int currentPlayer = 1; // Spieler 1 beginnt

    initializeBoard(board);
    printBoard(board);

    int column;
    while (1) {
        printf(YELLOW"Spieler %d, wähle eine Spalte (1-7): "RESET_COLOR, currentPlayer);

        scanf("%d", &column);
        if (column < 1 || column > 7) {
            showInvalidInputWarning();
            continue;
        }

        column--;

        if (isColumnFull(board, column)) {
            showColumnFullMessage();
            continue;
        }

        if (dropPiece(board, column, (currentPlayer == 1) ? 'X' : 'O')) {
            printBoard(board);
            if (checkWin(board, (currentPlayer == 1) ? 'X' : 'O')) {
                showWinMessage(currentPlayer);
                break;
            }

            currentPlayer = (currentPlayer == 1) ? 2 : 1;
        }
    }

    return 0;
}
// Write initializeBoard function
void initializeBoard(char board[ROWS][COLS]) {
    for (int i = 0; i < ROWS; i++) {
        for (int j = 0; j < COLS; j++) {
            board[i][j] = ' ';
        }
    }
}


// Write printBoard function
void printBoard(char board[ROWS][COLS]) {
    clearScreen();
    printf("\n");

    for (int i = 0; i < ROWS; i++) {
        for (int j = 0; j < COLS; j++) {
            printf("| %c ", board[i][j]);
        }
        printf("|\n");

        for (int j = 0; j < COLS; j++) {
            printf("----");
        }
        printf("-\n");
    }

    printf("  1   2   3   4   5   6   7\n\n");
}
// Write clearScreen function
void clearScreen() {
#ifdef _WIN32
    system("cls");
#else
    system("clear");
#endif
}

// Write isColumnFull function
int isColumnFull(char board[ROWS][COLS], int col) {
    return (board[0][col] != ' ');
}

//Write dropPiece function
int dropPiece(char board[ROWS][COLS], int col, char player) {
    for (int i = ROWS - 1; i >= 0; i--) {
        if (board[i][col] == ' ') {
            board[i][col] = player;
            return 1;
        }
    }

    return 0; // Column is full
}


// Write checkHorizontal function
int checkHorizontal(char board[ROWS][COLS], char player) {
    for (int row = 0; row < ROWS; row++) {
        for (int col = 0; col <= COLS - 4; col++) {
            if (board[row][col] == player &&
                board[row][col + 1] == player &&
                board[row][col + 2] == player &&
                board[row][col + 3] == player) {
                return 1;  // Gewonnen
            }
        }
    }
    return 0;
}

//Write checkVertical function
int checkVertical(char board[ROWS][COLS], char player) {
    for (int col = 0; col < COLS; col++) {
        for (int row = 0; row <= ROWS - 4; row++) {
            if (board[row][col] == player &&
                board[row + 1][col] == player &&
                board[row + 2][col] == player &&
                board[row + 3][col] == player) {
                return 1;  // Gewonnen
            }
        }
    }
    return 0;
}



// Write checkDiagonalLR function
int checkDiagonalLR(char board[ROWS][COLS], char player) {
    for (int row = 0; row <= ROWS - 4; row++) {
        for (int col = 0; col <= COLS - 4; col++) {
            if (board[row][col] == player &&
                board[row + 1][col + 1] == player &&
                board[row + 2][col + 2] == player &&
                board[row + 3][col + 3] == player) {
                return 1;  // Gewonnen
            }
        }
    }
    return 0;
}




// Write checkDiagonalRL function
int checkDiagonalRL(char board[ROWS][COLS], char player) {
    for (int row = 0; row <= ROWS - 4; row++) {
        for (int col = 3; col < COLS; col++) {
            if (board[row][col] == player &&
                board[row + 1][col - 1] == player &&
                board[row + 2][col - 2] == player &&
                board[row + 3][col - 3] == player) {
                return 1;  // Gewonnen
            }
        }
    }
    return 0;

}

// Write checkWin function
int checkWin(char board[ROWS][COLS], char player) {
    return checkHorizontal(board, player) ||
           checkVertical(board, player) ||
           checkDiagonalLR(board, player) ||
           checkDiagonalRL(board, player);
}


// Write showMessage function
void showMessage(const char* messageColor, const char* message) {
    printf("%s%s"RESET_COLOR, messageColor, message);
}

// Write showInvalidInputMessage function
void showInvalidInputWarning() {
    showMessage(RED, "Ungültige Eingabe. Bitte wähle eine Spalte zwischen 1 und 7.\n");
}




// Write showColumnFullMessage function
void showColumnFullMessage() {
    showMessage(RED, "Die ausgewählte Spalte ist bereits belegt. Bitte wähle eine andere Spalte aus.\n");
}



// Write showWinMessage function
void showWinMessage(int player) {
    printf("Spieler %d hat gewonnen!\n", player);
}