#include <stdio.h>
#include <stdlib.h>
#include <stdint.h>
#include <string.h>
#include <assert.h>
#include <raylib.h>
#include <complex.h>
#include <math.h>

#include <dlfcn.h>

#include "plug.h"

#define ARRAY_LEN(xs) sizeof(xs)/sizeof(xs[0])

const char *libplug_file_name = "libplug.so";
void *libplug = NULL;

#ifdef HOTRELOAD
#define PLUG(name, ...) name##_t *name = NULL;
#else
#define PLUG(name, ...) name##_t name;
#endif
LIST_OF_PLUGS
#undef PLUG

#ifdef HOTRELOAD
bool reload_plugin(void)
{

    if (libplug != NULL) dlclose(libplug);

    libplug = dlopen(libplug_file_name, RTLD_NOW);
    if  (libplug == NULL) {
        fprintf(stderr, "ERROR: could not load %s: %s", libplug_file_name, dlerror());
        return false;
    }

    #define PLUG(name, ...)	\
    name = dlsym(libplug, #name); \
    if (name == NULL) { \
        fprintf(stderr, "ERROR: could not find %s symbol in %s: %s", \
        #name, libplug_file_name, dlerror()); \
        return false; \
    }
    LIST_OF_PLUGS
    #undef PLUG

    return true;
}
#else
#define reload_plugin() true
#endif

int main(void)
{
    if (!reload_plugin()) return 1;

    size_t factor = 60;
    SetConfigFlags(FLAG_WINDOW_RESIZABLE);

    InitWindow(factor*16, factor*9, "MVis");
    SetTargetFPS(60);
    InitAudioDevice();

    plug_init();

    while (!WindowShouldClose()) {
        if (IsKeyPressed(KEY_O)) {
            void *state = plug_pre_reload();
            if (!reload_plugin()) return 1;
            plug_post_reload(state);
        }

        if (IsKeyPressed(KEY_X)) {
            break;
        }

        plug_update();
    }

    CloseAudioDevice();
    CloseWindow();

    return 0;
}