package main

/*
#cgo CFLAGS: -I/home/nick/Downloads/include
#cgo LDFLAGS: -L/home/nick/.local/lib -lprojectM-4
#include "projectM-4/projectM.h"
*/
import "C"

import (
	"github.com/veandco/go-sdl2/sdl"
)

func handleWindowEvent(event *sdl.WindowEvent, m *milkDropWindow) {
	switch event.Event {
	case sdl.WINDOWEVENT_RESIZED:
		w, h := event.Data1, event.Data2
		C.projectm_set_window_size(m.handle, C.ulong(w), C.ulong(h))
	}
}

func handleEvent(event sdl.Event, m *milkDropWindow) bool {
	switch event.(type) {
	case *sdl.QuitEvent:
		return false
	case *sdl.WindowEvent:
		event := event.(*sdl.WindowEvent)
		handleWindowEvent(event, m)
	}

	return true
}

func main() {
	err := sdl.Init(sdl.INIT_VIDEO)
	if err != nil {
		panic(err)
	}
	defer sdl.Quit()

	m, err := newMilkDropWindow(800, 600)
	if err != nil {
		panic(err)
	}
	defer m.destroy()

	m.loadPreset("/usr/share/projectM/presets/presets_stock/Zylot - Wisps.milk")

	running := true
	for running {
		for event := sdl.PollEvent(); event != nil; event = sdl.PollEvent() {
			running = handleEvent(event, m)
			if !running {
				break
			}
		}

		if !running {
			break
		}

		running, err = m.render()
		if err != nil {
			panic(err)
		}
	}
}