#include <stdio.h>
#include <stdlib.h>
#include <stdint.h>
#include <stdbool.h>

#include <SDL2/SDL.h>

#pragma GCC diagnostic push
#pragma GCC diagnostic ignored "-Wall"
#pragma GCC diagnostic ignored "-Wsign-conversion"
#pragma GCC diagnostic ignored "-Wdouble-promotion"
#pragma GCC diagnostic ignored "-Wconversion"

#define STB_IMAGE_IMPLEMENTATION
#include "stb_image.h"

#pragma GCC diagnostic pop

#define IMP
#include "app.h"
#include "vec2.h"
#include "da.h"
#include "unwrap.h"
#include "file.h"
#include "keybind.h"
#include "config.h"

struct app handle_events(struct app app);


int32_t
main(int32_t argc, char **argv)
{
	(void) argc; (void) argv;

	SCE(SDL_Init(SDL_INIT_VIDEO));

	const char *font_path = "./charmap-oldschool_white.png";

	struct app app = app_create("ged");

	app.font = font_create(app.rdr, font_path, 7, 18);
	app.font.scale = 2.0;

	const char *filepath = "./src/main.c";
	enum buffer_err err;
	RET_UNWRAP2(app.buf, err,
		    struct ret_buffer_err,
		    buffer_load_from_file(app.buf, filepath));
	(void) err;

	uint64_t i = 0;
	while ( app.running == true ) {
		struct buffer *c_buf = &app.buf;


		app = handle_events(app);

		SCE(SDL_SetRenderDrawColor(app.rdr, i & 0xFF, 0, 0, 1));
		SCE(SDL_RenderClear(app.rdr));

		app_render_text(app, c_buf->data.items, c_buf->data.size,
				vec2(0, 0), 0xFFFFFFFF, app.font.scale);
		/* app_render_cursor(app, 0x00FF000F); */

		SDL_RenderPresent(app.rdr);
		++i;
	}

	SDL_DestroyWindow(app.win.ptr);
	DA_DESTROY(app.buf.data);
	SDL_Quit();
	exit(EXIT_SUCCESS);
}


struct app
handle_events(struct app app)
{
	SDL_Event e = {0};
	bool done = false;
	while ( SDL_PollEvent(&e) ) {
		switch ( e.type ) {
		case SDL_QUIT: {
			app.running = false;
		} break;
		case SDL_KEYDOWN: {
			SDL_KeyboardEvent key = e.key;
			SDL_Keysym ks = key.keysym;
			struct keybinds kb = keybinds[ks.sym % KEYBINDS_MAX_SIZE];
			for ( size_t i = 0; i < kb.size; ++i ) {
				struct bind b = kb.binds[i];
				if ( b.func == NULL ) {
					continue;
				}
				if ( (! (b.mod == KMOD_NONE
					 && b.mod == ks.mod))
				     && (! (b.mod & ks.mod)) ) {
					continue;
				}
				app = b.func(app, b.args);
				done = true;
			}
		} break;
		case SDL_TEXTINPUT: {
			if ( done == true ) {
				break;
			}
			char *t = e.text.text;
			while( *t != '\0' ) {
				app.buf = buffer_insert_char(
					app.buf, app.buf.cur, *t++);
			}
		} break;
		case SDL_WINDOWEVENT: {
			WINDOW_UP_SIZE(app.win);
		} break;
		}
	}

	return app;
}