#include <string.h>
#include <stdlib.h>
#include <curses.h>
#include <limits.h>
#include "map.h"
#include "config.h"
#include "stack.h"

Map empty_map(size_t width, size_t height) {
    Map map = malloc(sizeof(MapTile*) * height);
    if (map == NULL) return NULL;

    for (size_t row = 0; row < height; row++) {
        map[row] = malloc(sizeof(MapTile) * width);
        if (map[row] == NULL) return NULL;
        memset(map[row], 0, width*sizeof(MapTile)); 
    }

    return map;
}

Map rbt_maze_map(size_t width, size_t height) {
    size_t map_width  = width * 2 - 1,
           map_height = height * 2 - 1;
    Map map = empty_map(map_width, map_height);

    // Vertical walls
    for (size_t i = 1; i < map_width; i += 2) {
        for (size_t j = 0; j < map_height; j += 1) {
            map[j][i] = WALL;
        }
    }
    // Horizontal walls
    for (size_t i = 1; i < map_height; i += 2) {
        for (size_t j = 0; j < map_width; j += 1) {
            map[i][j] = WALL;
        }
    }

    //TODO: Draw the rest of the owl

    return map;
}

void draw_map(Map map, int width, int height, Position player_pos) {
    // Draw field
    char c; // The char for the current tile
    for (int i = 0; i < height; i++) {
        for (int j = 0; j < width; j++) {
            int color_pair = 0; // The color pair of the current char 
            switch (map[i][j]) {
                case EMPTY: 
                    color_pair = COLOR_PAIR(EMPTY_COLOR);
                    c = EMPTY_CHAR; 
                    break;
                case GOAL: 
                    color_pair = COLOR_PAIR(GOAL_COLOR);
                    c = GOAL_CHAR; 
                    break;
                case WALL: 
                    color_pair = COLOR_PAIR(WALL_COLOR);
                    c = WALL_CHAR; 
                    break;

            }
            attron(color_pair);
            mvaddch(i + DRAW_MAP_OFFSET_Y, j + DRAW_MAP_OFFSET_X, c);
            attroff(color_pair);
        }
    }

    // Draw the player
    attron(COLOR_PAIR(PLAYER_COLOR));
    mvaddch(player_pos.y + DRAW_MAP_OFFSET_Y, player_pos.x + DRAW_MAP_OFFSET_X, PLAYER_CHAR);
    attroff(COLOR_PAIR(PLAYER_COLOR));
}