extends VBoxContainer
@tool


class SearchResults:
	var L = 0
	var C = 0

	var positions = []
	var te = null
	var _last_term = ""

	func _search_te(text, start_position, flags = 0):
		var start_pos = start_position
		if start_pos[L] < 0 or start_pos[L] > te.get_line_count():
			start_pos[L] = 0
		if start_pos[C] < 0:
			start_pos[L] = 0

		var result = te.search(text, flags, start_pos[L], start_pos[C])
		if (
			result.size() == 2
			and result[L] == start_position[L]
			and result[C] == start_position[C]
			and text == _last_term
		):
			if flags == TextEdit.SEARCH_BACKWARDS:
				result[C] -= 1
			else:
				result[C] += 1
			result = _search_te(text, result, flags)
			L = result.y
			C = result.x
		elif result.size() == 2:
			te.scroll_vertical = result[L]
			te.select(result[L], result[C], result[L], result[C] + text.length())
			te.set_caret_column(result[C])
			te.set_caret_line(result[L])
			te.center_viewport_to_caret()
			L = result.y
			C = result.x

		_last_term = text
		te.center_viewport_to_caret()
		return result

	func _cursor_to_pos():
		var to_return = [0, 0]
		to_return[L] = te.get_caret_line()
		to_return[C] = te.get_caret_column()
		return to_return

	func find_next(term):
		return _search_te(term, _cursor_to_pos())

	func find_prev(term):
		var new_pos = _search_te(term, _cursor_to_pos(), TextEdit.SEARCH_BACKWARDS)
		return new_pos

	func get_next_pos():
		pass

	func get_prev_pos():
		pass

	func clear():
		pass

	func find_all(text):
		var c_pos = [0, 0]
		var found = true
		var last_pos = [0, 0]
		positions.clear()

		while found:
			c_pos = te.search(text, 0, c_pos[L], c_pos[C])

			if (
				c_pos.size() > 0
				and (c_pos[L] > last_pos[L] or (c_pos[L] == last_pos[L] and c_pos[C] > last_pos[C]))
			):
				positions.append([c_pos[L], c_pos[C]])
				c_pos[C] += 1
				last_pos = c_pos
			else:
				found = false


@onready var _ctrls = {
	output = $Output,
	copy_button = $Toolbar/CopyButton,
	use_colors = $Toolbar/UseColors,
	clear_button = $Toolbar/ClearButton,
	word_wrap = $Toolbar/WordWrap,
	show_search = $Toolbar/ShowSearch,
	search_bar =
	{
		bar = $Search,
		search_term = $Search/SearchTerm,
	}
}
var _sr = SearchResults.new()


func _test_running_setup():
	_ctrls.use_colors.text = "use colors"
	_ctrls.show_search.text = "search"
	_ctrls.word_wrap.text = "ww"

	set_all_fonts("CourierPrime")
	set_font_size(20)

	load_file("user://.gut_editor.bbcode")


func _ready():
	_sr.te = _ctrls.output
	_ctrls.use_colors.icon = get_theme_icon("RichTextEffect", "EditorIcons")
	_ctrls.show_search.icon = get_theme_icon("Search", "EditorIcons")
	_ctrls.word_wrap.icon = get_theme_icon("Loop", "EditorIcons")

	_setup_colors()
	if get_parent() == get_tree().root:
		_test_running_setup()


# ------------------
# Private
# ------------------
func _setup_colors():
	_ctrls.output.clear()
	var keywords = [
		["Failed", Color.RED],
		["Passed", Color.GREEN],
		["Pending", Color.YELLOW],
		["Orphans", Color.YELLOW],
		["WARNING", Color.YELLOW],
		["ERROR", Color.RED]
	]

	for keyword in keywords:
		if _ctrls.output.syntax_highlighter == null:
			_ctrls.output.syntax_highlighter = CodeHighlighter.new()
		_ctrls.output.syntax_highlighter.add_keyword_color(keyword[0], keyword[1])

	var f_color = null
	if _ctrls.output.theme == null:
		f_color = get_theme_color("font_color")
	else:
		f_color = _ctrls.output.theme.font_color
	_ctrls.output.add_theme_color_override("font_color_readonly", f_color)
	_ctrls.output.add_theme_color_override("function_color", f_color)
	_ctrls.output.add_theme_color_override("member_variable_color", f_color)
	_ctrls.output.queue_redraw()


func _set_font(font_name, custom_name):
	var rtl = _ctrls.output
	if font_name == null:
		rtl.set("custom_fonts/" + custom_name, null)
	else:
		pass
		# cuasing issues in 4.0
		# var dyn_font = FontFile.new()
		# var font_data = FontFile.new()
		# font_data.font_path = 'res://addons/gut/fonts/' + font_name + '.ttf'
		# font_data.antialiased = true
		# dyn_font.font_data = font_data
		# rtl.set('custom_fonts/' + custom_name, dyn_font)


# ------------------
# Events
# ------------------
func _on_CopyButton_pressed():
	copy_to_clipboard()


func _on_UseColors_pressed():
	_ctrls.output.syntax_highlighter = _ctrls.use_colors.button_pressed


func _on_ClearButton_pressed():
	clear()


func _on_ShowSearch_pressed():
	show_search(_ctrls.show_search.button_pressed)


func _on_SearchTerm_focus_entered():
	_ctrls.search_bar.search_term.call_deferred("select_all")


func _on_SearchNext_pressed():
	_sr.find_next(_ctrls.search_bar.search_term.text)


func _on_SearchPrev_pressed():
	_sr.find_prev(_ctrls.search_bar.search_term.text)


func _on_SearchTerm_text_changed(new_text):
	if new_text == "":
		_ctrls.output.deselect()
	else:
		_sr.find_next(new_text)


func _on_SearchTerm_text_entered(new_text):
	if Input.is_physical_key_pressed(KEY_SHIFT):
		_sr.find_prev(new_text)
	else:
		_sr.find_next(new_text)


func _on_SearchTerm_gui_input(event):
	if event is InputEventKey and !event.pressed and event.scancode == KEY_ESCAPE:
		show_search(false)


func _on_WordWrap_pressed():
	_ctrls.output.wrap_enabled = _ctrls.word_wrap.pressed
	_ctrls.output.queue_redraw()


# ------------------
# Public
# ------------------
func show_search(should):
	_ctrls.search_bar.bar.visible = should
	if should:
		_ctrls.search_bar.search_term.grab_focus()
		_ctrls.search_bar.search_term.select_all()
	_ctrls.show_search.button_pressed = should


func search(text, start_pos, highlight = true):
	return _sr.find_next(text)


func copy_to_clipboard():
	var selected = _ctrls.output.get_selection_text()
	if selected != "":
		OS.clipboard = selected
	else:
		OS.clipboard = _ctrls.output.text


func clear():
	_ctrls.output.text = ""


func set_all_fonts(base_name):
	if base_name == "Default":
		_set_font(null, "font")
#		_set_font(null, 'normal_font')
#		_set_font(null, 'bold_font')
#		_set_font(null, 'italics_font')
#		_set_font(null, 'bold_italics_font')
	else:
		_set_font(base_name + "-Regular", "font")


#		_set_font(base_name + '-Regular', 'normal_font')
#		_set_font(base_name + '-Bold', 'bold_font')
#		_set_font(base_name + '-Italic', 'italics_font')
#		_set_font(base_name + '-BoldItalic', 'bold_italics_font')


func set_font_size(new_size):
	var rtl = _ctrls.output
	if rtl.get("custom_fonts/font") != null:
		rtl.get("custom_fonts/font").size = new_size


#		rtl.get('custom_fonts/bold_italics_font').size = new_size
#		rtl.get('custom_fonts/bold_font').size = new_size
#		rtl.get('custom_fonts/italics_font').size = new_size
#		rtl.get('custom_fonts/normal_font').size = new_size


func set_use_colors(value):
	pass


func get_use_colors():
	return false


func get_rich_text_edit():
	return _ctrls.output


func load_file(path):
	var f = FileAccess.open(path, FileAccess.READ)
	if f == null:
		return

	var t = f.get_as_text()
	f.close()
	_ctrls.output.text = t
	_ctrls.output.scroll_vertical = _ctrls.output.get_line_count()
	_ctrls.output.set_deferred("scroll_vertical", _ctrls.output.get_line_count())


func add_text(text):
	if is_inside_tree():
		_ctrls.output.text += text


func scroll_to_line(line):
	_ctrls.output.scroll_vertical = line
	_ctrls.output.set_caret_line(line)