#include <locale.h>
#include <math.h>
#include <stdio.h>
#include <unistd.h>

#include "framebuffer.h"

int main(void) {
    setlocale(LC_ALL,"");

    term_init();
    //fprintf(stderr, "%zux%zu\n", term_width, term_height);

    Framebuffer fb = fb_new(term_width, term_height);
    fb_fill(fb, P_RED);

    char c;
    const float k_x = 0.1;
    const float k_t = 0.1;
    size_t t = 0;
    long text_x = 0, text_y = 0;
    while(1) {
        fb_fill(fb, P_RED);

        /* Sine wave */
        for (size_t x = 0; x < term_width; x++) {
            size_t y = ((sin(k_x * x + k_t * t) + 1.0) / 2 * term_height / 2) + (size_t)(term_height / 4);
            fb_vert_line(fb, x, y, term_height - 1, P_GREEN);
        }

        fb_text_no_bg(fb, text_x, text_y, "testing", C_BLACK);

        fb_print(fb);

        /* Handle input */
        if (get_input(c) != 0) {
            switch(c) {
                case 'q': goto quit;   break;
                case 'h': text_x -= 1; break;
                case 'l': text_x += 1; break;
                case 'k': text_y -= 1; break;
                case 'j': text_y += 1; break;
            }
        };

        t++;
    }

quit:
    fb_free(&fb);
    term_cleanup();
}