#include <stdio.h>
#include <stdlib.h>
#include <stdint.h>
#include <string.h>
#include <unistd.h>
#include <ncurses.h>


/*nothing*/

int main(int argc, char *argv[])
{
    FILE* mazeFile; 			        /* Maze Input File */
    unsigned int row = 0;                            /* Holds number of rows for input from file */
    unsigned int col = 0;                            /* Holds number of cols for input from file */
unsigned int pcol = 0; 
unsigned int prow = 0; 
    char shold[2000];                   /* Holds lines for input from file */
    unsigned int l = 0;
    unsigned int k = 0;
	char **maze;						/* array for maze */		
    unsigned int c1 = 0;
    unsigned int c2 = 0;
	unsigned int i = 0;
	unsigned int j = 0;
	unsigned int x = 0;
	unsigned int y = 0;
 	int deltaRow, deltaCol;            /* Change in row-column position based on key input */


	WINDOW* W = 0;                     /* Curses Window handle */	
	int rowLimit,colLimit;            /* Num of rows and columns in terminal window */ 
	/* Initialize ncurses -- you will want to use the following settings */
  


	/* check to see if argument */
    if (argc != 2)
    {
		/*printw("An error has ocurred no input file was given.\n");*/
		return 1;
    }
    mazeFile = fopen(argv[1], "r"); 
    if (mazeFile == NULL)
    {
		/*printw("Error in opening the file.\n");*/
        return 1;
    }
    fgets(shold, 2, mazeFile);
    while ( feof(mazeFile) == 0 )
    {
		

		switch(shold[0])
		{
			case 'M':
				/* read array values, dynamically allocate array */
				fscanf(mazeFile, "%3u %3u", &row, &col);
				maze = (char**)malloc(row * 8);
				for(i = (unsigned) 0; i < row; i++)
				{
					if (maze==NULL)
					{
						break;
					}
					maze[i] = malloc(col * 8);
				}
				for (x = (unsigned) 0; x < row; x++)
				{
					for (j = (unsigned) 0; j < col; j++)
					{
						fscanf(mazeFile, "%c", &maze[x][j]);
						if (maze[x][j] == '\n')
						{
							fscanf(mazeFile, "%c", &maze[x][j]);
						}
					}
				}
				break;
			case 'P':
				fscanf(mazeFile, "%3u %3u", &k, &l);
				/* check maze bounds */
				if(k>= row || l>= col){
					break;
				}
				maze[k][l] = 'P';
			break;
			
			case 'Z':
				fscanf(mazeFile, "%3u %3u", &k, &l);
				/* check maze bounds */
				if(k>= row || l>= col){
					break;
				}
				maze[k][l] = 'Z';
			break;

			case 'T':
				fscanf(mazeFile, "%3u %3u", &k, &l);
				/* check maze bounds */
				if(k>= row || l>= col){
					break;
				}
				maze[k][l] = 'T';
				break;
			default:
					break;
		};
			fgets(shold, 2, mazeFile);
			if (feof(mazeFile) != 0)
			{
				break;
			}
    }


    fclose(mazeFile);
	W = initscr();     /* Determine terminal type and initialize curses data structures */
  start_color();     /* Enable use of color with ncurses */
  cbreak();          /* Disable line buffering and make char inputs immediately accessible to program */
  noecho();          /* Disable echo printing of chars type by user */
  nodelay(W, true);  /* Make getch( ) a non-blocking call */
  keypad(W, true);   /* Enable keypad and arrow keys */
  curs_set(0);       /* Set cursor to be invisible - 0 */
  getmaxyx(W, rowLimit, colLimit);  /* Query terminal dimensions */

 /* Define color pallete foreground-background color pairs */
  /* PairID#, Foreground Color, Background Color */
  /* Foreground color == Background color ==> solid color block */
  init_pair(1, COLOR_BLACK, COLOR_BLACK);      /* Black text on Black background */
  init_pair(2, COLOR_RED, COLOR_BLACK);        /* Red text on Black background */
  init_pair(3, COLOR_WHITE, COLOR_BLUE);       /* White text on Blue background */
  init_pair(4, COLOR_YELLOW, COLOR_YELLOW);    /* Yellow text on Yellow background */
 
	
	for (c1 =(unsigned)0; c1 < row; c1++)
	{
		/*printw ("\n");*/
		for (c2=(unsigned)0; c2 < col; c2++)
		{
			if (maze==NULL)
			{
				break;
			}
			switch(maze[c1][c2])
        {
            case '#':
                /* read array values, dynamically allocate array*/
                wmove(W, c1,c2);
                waddch(W,'#');
                break;
            case ' ':
                wmove(W, c1,c2);
                waddch(W,' ');
            break;
            case 'P':
                wmove(W, c1,c2);
                waddch(W,'P');
		prow=c1;
		pcol=c2;
            break;
            case 'Z':
                wmove(W, c1,c2);
                waddch(W,'Z');
            break;    
            case 'T':
                wmove(W, c1,c2);
                waddch(W,'T');
                break;    
            
            default:
                    break;
        };
			/*printw("%c", maze[c1][c2]);*/
		}
	}

	deltaRow =0;
	deltaCol =0;
 


	do{
	
	int kb = wgetch(W);                   /* Grab keypress */

    	/* Support player movement via WASD, IJKL, and arrow keys */
    	if (kb == 'a' || kb == 'j' || kb == KEY_LEFT)
    	{
     	   /* Move Left */  
		deltaRow =0;
		deltaCol =-1;
    	}
   	 else if (kb == 'd' || kb == 'l' || kb == KEY_RIGHT)
    	{
     	   /* Move Right */
		deltaRow =0;
		deltaCol =1;
    	}
    	else if (kb == 'w' || kb == 'i' || kb == KEY_UP)
   	 {
     	   /* Move Up */ 
		deltaRow =-1;
		deltaCol =0; 
   	 }	
    	else if (kb == 's' || kb == 'k' || kb == KEY_DOWN)
    	{
    	    /* Move Down */ 
		deltaRow =1;
		deltaCol =0;
    	}
    	else if (kb == 'q')
    	{
       	 /* q to exit player movement loop */ 
       	 break;
    	};


	attron(COLOR_PAIR(1));      
	wmove(W,prow,pcol);
	waddch(W, 'P'); 
	attroff(COLOR_PAIR(1)); 

	prow = prow + deltaRow;
	pcol = pcol + deltaCol;

	attron(COLOR_PAIR(3));  
	wmove(W,prow,pcol);
	waddch(W, 'P'); 
	attroff(COLOR_PAIR(3)); 

	deltaRow =0;
	deltaCol =0;

	wrefresh(W);                            /* Refresh ncurses window */

  } while (true);                           /* Repeat until user selects q to quit */

       
    /* free the memory */
	for(y = (unsigned)0; y < row; y++)
	{
		free(maze[y]);
		maze[y] = NULL;
	}
	if(maze != NULL){
		free(maze);
	}
	/*printw("\n");*/
	 endwin();
    return 0;
}