#include <stdio.h>
#include <stdbool.h>
#define ROWS 6
#define COLS 7
// start it with startGame function
void initializeBoard(char board[ROWS][COLS]);
void printBoard(char board[ROWS][COLS]);
void startGame();
bool checkWin(int a, int b, char board[ROWS][COLS]);
int drop(int b, char player, char board[ROWS][COLS]);


 int main()
 {
    int hold,error=0, hold2=0, charsPlaced=0;
    bool gamewon=false;
    char player='*';
    char board[ROWS][COLS];
    initializeBoard(board);
    startGame();
    printBoard(board);
    while(!gamewon)
    {
        if(hold2 !=-1)
        {
            if(player=='*')
            {
                printf("player 1 drop where?\n");
                player='o';
            }
            else
            {
                printf("player 2 drop where?\n");
                player='*';
            }
        }

        while(true)
        {
            if(charsPlaced==42) break; //draw
            scanf("%d", &hold);
            if(scanf("%d", &hold)<1)
            {
                error=1;
                printf("doomed\n"); // doomed
            }
            hold--; // we take 1
            if(hold<=6 && hold>=0) break;
            else printf("please enter a valid value motherfuckeer\n");

        }

        if(charsPlaced==42) break; //draw
        hold2 = drop(hold,player, board[ROWS][COLS]);
        if(hold2==-2) printf(" FULL please choose another\n");
        else if(hold2==-1) printf("PLease enter a valid range\n");
        else
        {
            gamewon= checkWin(hold2, hold, board[ROWS][COLS]);
            charsPlaced++;
        }
        printBoard(board[ROWS][COLS]);

    }






     return 0;
 }

bool checkWin(int a, int b,char board[ROWS][COLS])
{
    int vertical=1, horizontal=1, diagonal1=1, diagonal2=1, i,ii;
    char player=board[a][b];
    for(i = a;board[i][b] == player && i <= 5;i++,vertical++);    //Check down
    for(i = a;board[i][b] == player && i >= 0;i--,vertical++);    //Check up
    if(vertical >= 4)return true;

    for(ii = b;board[a][ii] == player && ii >= 0;ii--,horizontal++);   //Check left
    for(ii = b;board[a][ii] == player && ii <= 6;ii++,horizontal++);   //Check right
    if(horizontal >= 4) return true;

    for(i = a, ii= b;board[i][ii] == player && i>=0 && ii >=0; diagonal1 ++, i --, ii --);//up and left
    for(i = a, ii = b;board[i][ii] == player && i<=5 && ii <=6;diagonal1 ++, i ++, ii ++);//down and right
    if(diagonal1 >= 4) return true;

    //check for diagonal 2(/)
    for(i = a, ii=b; board[i][ii] == player && i>=0 && ii <= 6; diagonal2 ++, i --, ii ++);//up and right
    for(i = a, ii=b; board[i][ii] == player && i<=5 && ii >=0; diagonal2 ++, i ++, ii --);//up and left
    if(diagonal2 >= 4) return true;

return false;

}

int drop(int b, char player, char board[ROWS][COLS])
{
    if(b>=1 && b<=7)
    {
        if(board[0][b]==' ')
        {
            int i;
            for(i=0;board[i][b-1]==' ';i++)
                if(i==5)
                {
                    board[i][b-1]=player;
                    return i;
                }
                i--;
                board[i][b-1]=player;
                return i;

        }
        else return -2; // full
    }
    else return -1; // not valid
}


void startGame()
{
    printf("Welcome to Connect-4!\n");


}


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

    }
    printf("---------------\n");
    for(int i=1;i<COLS+1;i++)
        printf(" %d",i);
}