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#include <curses.h>
#include <signal.h>
#include <stdlib.h>
#include <stdio.h>
#include <time.h>
#include "map.h"
#include "structs.h"
#include "config.h"
#include "error.h"
#include "priority_queue.h"

/* So, TODO for now:
   - Implement Dijkstra and greedy-best-first search algorithms
   - Implement the A* algorithm
      - Implement it with 4 and 8 directions
   - Implement adding maps from files (with rle, preferably)
   - Implement controls (to change maps, move start/goal, etc.)
   - Clean up unused `#include`s */

void sigint_handler(int sig) {
    (void)sig; /* We know it's a SIGINT */
    endwin();
    printf("Received SIGINT\n");
    exit(1);
}

void initialize_colors(void) {
    start_color();
    use_default_colors();
    init_pair(EMPTY_COLOR, COLOR_BLACK, -1);
    init_pair(GOAL_COLOR, COLOR_RED, -1);
    init_pair(WALL_COLOR, COLOR_WHITE, COLOR_WHITE); /* Using white as bg makes
                                                        them seem solid */
    init_pair(START_COLOR, COLOR_RED, -1);
}

int main(void) {
    signal(SIGINT, sigint_handler);

    initscr();     /* Initialize the ncurses screen */
    cbreak();      /* Process input one char at a time */
    curs_set(0);   /* Hide the cursor */
    noecho();      /* Don't echo characters */
    initialize_colors();

    /* FIXME: shitty. sometimes leaves enough space on the right for a bigger map */
    /* size_t height = LINES/2 - DRAW_MAP_OFFSET_Y,
           width = COLS/4 - 1;
    Map map = rbt_maze_map(width, height, (unsigned int) time(NULL));
    Position fake_start_position_to_pass_into_draw_map = {0, 0};
    Position fake_goal_position_to_pass_into_draw_map = {width*2-2, height*2-2}; */

    size_t width, height;
    Position start_pos, end_pos;
    Map map = file_plaintext_map("maps/test", &width, &height, &start_pos, &end_pos);

    int offset_x = 0, offset_y = 0;
    while (1) {
        draw_map(map, width, height, offset_x, offset_y, start_pos, end_pos);
        char c = getch();
        switch (c) {
            case 'h': offset_x -= 2; break;
            case 'l': offset_x += 2; break;
            case 'j': offset_y += 1; break;
            case 'k': offset_y -= 1; break;
          /*
            case 'n': 
                 FIXME: free it before generating a new one 
                map = rbt_maze_map(width, height, (unsigned int) time(NULL));
                break;
            */
            case 'q': endwin(); return 0;          
        }
    }

    endwin();
    return 0;
}