extends Node

export (bool) var use_embeded_patch = false
export (String, MULTILINE) var patch1 = ""
export (String, MULTILINE) var patch2 = ""

var _my_patch1 = "user://autoload/outL.pd"
var _my_patch2 = "user://autoload/outR.pd"
var _my_id1 = 0
var _my_id2 = 0

var _reverb = false
var _lowpass = false

func set_gain(gain):
	Global._gdpd.start_message(2)
	Global._gdpd.add_symbol('gain')
	Global._gdpd.add_float(gain)
	Global._gdpd.finish_list("fromGodot" + String(_my_id1))
	Global._gdpd.start_message(2)
	Global._gdpd.add_symbol('gain')
	Global._gdpd.add_float(gain)
	Global._gdpd.finish_list("fromGodot" + String(_my_id2))

func set_reverb(reverb):
	Global._gdpd.start_message(2)
	Global._gdpd.add_symbol('reverb')
	Global._gdpd.add_float(reverb)
	Global._gdpd.finish_list("fromGodot" + String(_my_id1))
	Global._gdpd.start_message(2)
	Global._gdpd.add_symbol('reverb')
	Global._gdpd.add_float(reverb)
	Global._gdpd.finish_list("fromGodot" + String(_my_id2))

func set_lowpass(lowpass):
	Global._gdpd.start_message(2)
	Global._gdpd.add_symbol('lowpass')
	Global._gdpd.add_float(lowpass)
	Global._gdpd.finish_list("fromGodot" + String(_my_id1))
	Global._gdpd.start_message(2)
	Global._gdpd.add_symbol('lowpass')
	Global._gdpd.add_float(lowpass)
	Global._gdpd.finish_list("fromGodot" + String(_my_id2))

func _ready():
	# save patch (for export)
	if use_embeded_patch:
		assert(_my_patch1.substr(0, 7) == "user://", "use userpath with embeded_patch enabled !")
		assert(_my_patch2.substr(0, 7) == "user://", "use userpath with embeded_patch enabled !")
		assert(patch1 != "", "patch is empty?")
		assert(patch2 != "", "patch is empty?")
		_save_patch()

	# load patch
	_my_id1 = Global.load_patch(ProjectSettings.globalize_path(_my_patch1))
	_my_id2 = Global.load_patch(ProjectSettings.globalize_path(_my_patch2))

	# set start-up defaults
	set_gain(1)
	set_reverb(0)
	set_lowpass(0)

func _exit_tree():
	Global.close_patch(_my_id1)
	Global.close_patch(_my_id2)

func _process(delta):
	if Input.is_action_just_pressed("reverb"):
		_reverb = not _reverb
		set_reverb(float(_reverb))

	if Input.is_action_just_pressed("lowpass"):
		_lowpass = not _lowpass
		set_lowpass(float(_lowpass))

func _save_patch():
	# save patch
	# prepare directory
	var patch_name1 = _my_patch1.split("/")[-1]
	var patch_dir1 = _my_patch1.trim_suffix(patch_name1)
	var dir1 = Directory.new()
	dir1.make_dir_recursive(patch_dir1)
	# save to file
	var file1 = File.new()
	file1.open(_my_patch1, File.WRITE)
	file1.store_string(patch1)
	file1.close()
	####
	var patch_name2 = _my_patch2.split("/")[-1]
	var patch_dir2 = _my_patch2.trim_suffix(patch_name2)
	var dir2 = Directory.new()
	dir2.make_dir_recursive(patch_dir2)
	# save to file
	var file2 = File.new()
	file2.open(_my_patch2, File.WRITE)
	file2.store_string(patch2)
	file2.close()