#include "quakedef.h"

#ifdef USE_FMOD
#include "fmod.h"
#include "fmod_errors.h"

FMOD_SYSTEM *fmod_system = NULL;

#if 1
//void S_Init(void)
//{
//	// Register cvars (see snd_dma.c) and check parameters
//	// Call S_Startup
//	// Call S_StopAllSounds(true)
//
//	// Note: could actually keep the original S_Init from snd_dma.c and have it call the above functions in here
//}

void S_Startup(void)
{
	// Create FMOD System if it doesn't exist already
	// Create SFX channel group
	// Could use System::set3DRolloffCallback to set up a (attenuation / sound_nominal_clip_dist) distance multiplier (would need to use ChannelControl::setUserData to hold ref to attn value)
	// Note: sound_nominal_clip_dist could be dynamic to allow a small sound 'bubble' for local multiplayer

	// Set sound_started to true
	Con_DPrintf("[FMOD] Startup\n");
}

void S_Shutdown(void)
{
	// Destroy SFX channel group
	// If we created FMOD System (and consequently own it), destroy it here
	Con_DPrintf("[FMOD] Shutdown\n");
}

void S_StartSound(int entnum, int entchannel, sfx_t *sfx, vec3_t origin, float fvol, float attenuation)
{
	// Find channel group for entity number (or create) => note entnum can also be some random hash value
		// ChannelControl::setMode => set to 3D
	
	// Pre-define channels for each entity (could be an array of ints, probably array of entchannel_t structs)
	// For entchannel 0, dynamically select a free channel (or just play without doing anything, let FMOD handle it)
	// If channel at index entchannel >0 is already playing: stop
	// Special case entchannel -1 => just play locally on listener, no 3D

	// System::playSound with paused = true
	// ChannelControl::set3DAttributes
	// Use ChannelControl::setDelay and ChannelControl::getDSPClock to add a delay to move sounds out of phase if necessary
	// ChannelControl::setPaused = false
	
	// Store channel handle at position entchannel
	if (sfx)
		Con_DPrintf("[FMOD] Start sound %s for entity %d channel %d\n", sfx->name, entnum, entchannel);
	else
		Con_DPrintf("[FMOD] Start sound NULL for entity %d channel %d\n", entnum, entchannel);
}

void S_StaticSound(sfx_t *sfx, vec3_t origin, float vol, float attenuation)
{
	// Similar to above, but without the per-entity channel group song and dance
	// Check if sound is looped (should be) and FMOD_Channel_SetMode to looped
	// Set Channel::setLoopPoints if the sfxcache specifies something non-standard
	if (sfx)
		Con_DPrintf("[FMOD] Static sound: %s\n", sfx->name);
	else
		Con_DPrintf("[FMOD] Static sound: NULL\n");
}

void S_StopSound(int entnum, int entchannel)
{
	Con_DPrintf("[FMOD] Stop sound for entity %d channel %d\n", entnum, entchannel);
}

void S_StopAllSounds(qboolean clear)
{

}

void S_ClearBuffer(void)
{

}

void S_Update(vec3_t origin, vec3_t forward, vec3_t right, vec3_t up)
{
	// System::set3DListenerAttributes

	FMOD_System_Update(fmod_system);
}

void S_ExtraUpdate(void)
{
	FMOD_System_Update(fmod_system);
}

static void S_SetMasterMute(FMOD_BOOL mute)
{
	FMOD_CHANNELGROUP *master;

	if (!fmod_system)
		return;

	FMOD_System_GetMasterChannelGroup(fmod_system, &master);
	FMOD_ChannelGroup_SetMute(master, mute);
}

void S_BlockSound(void)
{
	S_SetMasterMute(1);
}

void S_UnblockSound(void)
{
	S_SetMasterMute(0);
}

sfx_t *S_PrecacheSound(const char *sample)
{
	// System::createSound with FMOD_3D (sfx_t will need a pointer to FMOD_Sound)
	// Might need to set rate and width? FMOD can probably figure this out by itself based on the WAV file contents
	Con_DPrintf("[FMOD] Precaching sound: %s\n", sample);
	return NULL;
}

void S_TouchSound(const char *sample)
{

}
#endif

#endif	// USE_FMOD