@tool
extends Control

const RUNNER_JSON_PATH = "res://.gut_editor_config.json"
const RESULT_FILE = "user://.gut_editor.bbcode"
const RESULT_JSON = "user://.gut_editor.json"
const SHORTCUTS_PATH = "res://.gut_editor_shortcuts.cfg"

var TestScript = load("res://addons/gut/test.gd")
var GutConfigGui = load("res://addons/gut/gui/gut_config_gui.gd")
var ScriptTextEditors = load("res://addons/gut/gui/script_text_editor_controls.gd")

var _interface = null
var _is_running = false
var _gut_config = load("res://addons/gut/gut_config.gd").new()
var _gut_config_gui = null
var _gut_plugin = null
var _light_color = Color(0, 0, 0, .5)
var _panel_button = null
var _last_selected_path = null

@onready var _ctrls = {
	output = $layout/RSplit/CResults/TabBar/OutputText.get_rich_text_edit(),
	output_ctrl = $layout/RSplit/CResults/TabBar/OutputText,
	run_button = $layout/ControlBar/RunAll,
	shortcuts_button = $layout/ControlBar/Shortcuts,
	settings_button = $layout/ControlBar/Settings,
	run_results_button = $layout/ControlBar/RunResultsBtn,
	output_button = $layout/ControlBar/OutputBtn,
	settings = $layout/RSplit/sc/Settings,
	shortcut_dialog = $BottomPanelShortcuts,
	light = $layout/RSplit/CResults/ControlBar/Light3D,
	results =
	{
		bar = $layout/RSplit/CResults/ControlBar,
		passing = $layout/RSplit/CResults/ControlBar/Passing/value,
		failing = $layout/RSplit/CResults/ControlBar/Failing/value,
		pending = $layout/RSplit/CResults/ControlBar/Pending/value,
		errors = $layout/RSplit/CResults/ControlBar/Errors/value,
		warnings = $layout/RSplit/CResults/ControlBar/Warnings/value,
		orphans = $layout/RSplit/CResults/ControlBar/Orphans/value
	},
	run_at_cursor = $layout/ControlBar/RunAtCursor,
	run_results = $layout/RSplit/CResults/TabBar/RunResults
}


func _init():
	_gut_config.load_panel_options(RUNNER_JSON_PATH)


func _ready():
	_ctrls.results.bar.connect("draw", _on_results_bar_draw.bind(_ctrls.results.bar))
	hide_settings(!_ctrls.settings_button.button_pressed)
	_gut_config_gui = GutConfigGui.new(_ctrls.settings)
	_gut_config_gui.set_options(_gut_config.options)

	_apply_options_to_controls()

	_ctrls.shortcuts_button.icon = get_theme_icon("Shortcut", "EditorIcons")
	_ctrls.settings_button.icon = get_theme_icon("Tools", "EditorIcons")
	_ctrls.run_results_button.icon = get_theme_icon("AnimationTrackGroup", "EditorIcons")  # Tree
	_ctrls.output_button.icon = get_theme_icon("Font", "EditorIcons")

	_ctrls.run_results.set_output_control(_ctrls.output_ctrl)
	_ctrls.run_results.set_font(
		_gut_config.options.panel_options.font_name, _gut_config.options.panel_options.font_size
	)

	var check_import = load("res://addons/gut/images/red.png")
	if check_import == null:
		_ctrls.run_results.add_centered_text(
			"GUT got some new images that are not imported yet.  Please restart Godot."
		)
		print("GUT got some new images that are not imported yet.  Please restart Godot.")
	else:
		_ctrls.run_results.add_centered_text("Let's run some tests!")


func _apply_options_to_controls():
	hide_settings(_gut_config.options.panel_options.hide_settings)
	hide_result_tree(_gut_config.options.panel_options.hide_result_tree)
	hide_output_text(_gut_config.options.panel_options.hide_output_text)

	_ctrls.output_ctrl.set_use_colors(_gut_config.options.panel_options.use_colors)
	_ctrls.output_ctrl.set_all_fonts(_gut_config.options.panel_options.font_name)
	_ctrls.output_ctrl.set_font_size(_gut_config.options.panel_options.font_size)

	_ctrls.run_results.set_font(
		_gut_config.options.panel_options.font_name, _gut_config.options.panel_options.font_size
	)
	_ctrls.run_results.set_show_orphans(!_gut_config.options.hide_orphans)


func _process(delta):
	if _is_running:
		if !_interface.is_playing_scene():
			_is_running = false
			_ctrls.output_ctrl.add_text("\ndone")
			load_result_output()
			_gut_plugin.make_bottom_panel_item_visible(self)


# ---------------
# Private
# ---------------


func load_shortcuts():
	_ctrls.shortcut_dialog.load_shortcuts(SHORTCUTS_PATH)
	_apply_shortcuts()


func _is_test_script(script):
	var from = script.get_base_script()
	while from and from.resource_path != "res://addons/gut/test.gd":
		from = from.get_base_script()

	return from != null


func _show_errors(errs):
	_ctrls.output_ctrl.clear()
	var text = "Cannot run tests, you have a configuration error:\n"
	for e in errs:
		text += str("*  ", e, "\n")
	text += "Check your settings ----->"
	_ctrls.output_ctrl.add_text(text)
	hide_output_text(false)
	hide_settings(false)


func _save_config():
	_gut_config.options = _gut_config_gui.get_options(_gut_config.options)
	_gut_config.options.panel_options.hide_settings = !_ctrls.settings_button.button_pressed
	_gut_config.options.panel_options.hide_result_tree = !_ctrls.run_results_button.button_pressed
	_gut_config.options.panel_options.hide_output_text = !_ctrls.output_button.button_pressed
	_gut_config.options.panel_options.use_colors = _ctrls.output_ctrl.get_use_colors()

	var w_result = _gut_config.write_options(RUNNER_JSON_PATH)
	if w_result != OK:
		push_error(str("Could not write options to ", RUNNER_JSON_PATH, ": ", w_result))
		return


func _run_tests():
	var issues = _gut_config_gui.get_config_issues()
	if issues.size() > 0:
		_show_errors(issues)
		return

	write_file(RESULT_FILE, "Run in progress")
	_save_config()
	_apply_options_to_controls()

	_ctrls.output_ctrl.clear()
	_ctrls.run_results.clear()
	_ctrls.run_results.add_centered_text("Running...")

	_interface.play_custom_scene("res://addons/gut/gui/GutRunner.tscn")
	_is_running = true
	_ctrls.output_ctrl.add_text("Running...")


func _apply_shortcuts():
	_ctrls.run_button.shortcut = _ctrls.shortcut_dialog.get_run_all()

	_ctrls.run_at_cursor.get_script_button().shortcut = (
		_ctrls.shortcut_dialog.get_run_current_script()
	)
	_ctrls.run_at_cursor.get_inner_button().shortcut = (
		_ctrls.shortcut_dialog.get_run_current_inner()
	)
	_ctrls.run_at_cursor.get_test_button().shortcut = _ctrls.shortcut_dialog.get_run_current_test()

	_panel_button.shortcut = _ctrls.shortcut_dialog.get_panel_button()


func _run_all():
	_gut_config.options.selected = null
	_gut_config.options.inner_class = null
	_gut_config.options.unit_test_name = null

	_run_tests()


# ---------------
# Events
# ---------------
func _on_results_bar_draw(bar):
	bar.draw_rect(Rect2(Vector2(0, 0), bar.size), Color(0, 0, 0, .2))


func _on_Light_draw():
	var l = _ctrls.light
	l.draw_circle(Vector2(l.size.x / 2, l.size.y / 2), l.size.x / 2, _light_color)


func _on_editor_script_changed(script):
	if script:
		set_current_script(script)


func _on_RunAll_pressed():
	_run_all()


func _on_Shortcuts_pressed():
	_ctrls.shortcut_dialog.popup_centered()


func _on_bottom_panel_shortcuts_visibility_changed():
	_apply_shortcuts()
	_ctrls.shortcut_dialog.save_shortcuts(SHORTCUTS_PATH)


func _on_RunAtCursor_run_tests(what):
	_gut_config.options.selected = what.script
	_gut_config.options.inner_class = what.inner_class
	_gut_config.options.unit_test_name = what.test_method

	_run_tests()


func _on_Settings_pressed():
	hide_settings(!_ctrls.settings_button.button_pressed)
	_save_config()


func _on_OutputBtn_pressed():
	hide_output_text(!_ctrls.output_button.button_pressed)
	_save_config()


func _on_RunResultsBtn_pressed():
	hide_result_tree(!_ctrls.run_results_button.button_pressed)
	_save_config()


# Currently not used, but will be when I figure out how to put
# colors into the text results
func _on_UseColors_pressed():
	pass


# ---------------
# Public
# ---------------
func hide_result_tree(should):
	_ctrls.run_results.visible = !should
	_ctrls.run_results_button.button_pressed = !should


func hide_settings(should):
	var s_scroll = _ctrls.settings.get_parent()
	s_scroll.visible = !should

	# collapse only collapses the first control, so we move
	# settings around to be the collapsed one
	if should:
		s_scroll.get_parent().move_child(s_scroll, 0)
	else:
		s_scroll.get_parent().move_child(s_scroll, 1)

	$layout/RSplit.collapsed = should
	_ctrls.settings_button.button_pressed = !should


func hide_output_text(should):
	$layout/RSplit/CResults/TabBar/OutputText.visible = !should
	_ctrls.output_button.button_pressed = !should


func load_result_output():
	_ctrls.output_ctrl.load_file(RESULT_FILE)

	var summary = get_file_as_text(RESULT_JSON)
	var test_json_conv = JSON.new()
	if test_json_conv.parse(summary) != OK:
		return
	var results = test_json_conv.get_data()

	_ctrls.run_results.load_json_results(results)

	var summary_json = results["test_scripts"]["props"]
	_ctrls.results.passing.text = str(summary_json.passing)
	_ctrls.results.passing.get_parent().visible = true

	_ctrls.results.failing.text = str(summary_json.failures)
	_ctrls.results.failing.get_parent().visible = true

	_ctrls.results.pending.text = str(summary_json.pending)
	_ctrls.results.pending.get_parent().visible = _ctrls.results.pending.text != "0"

	_ctrls.results.errors.text = str(summary_json.errors)
	_ctrls.results.errors.get_parent().visible = _ctrls.results.errors.text != "0"

	_ctrls.results.warnings.text = str(summary_json.warnings)
	_ctrls.results.warnings.get_parent().visible = _ctrls.results.warnings.text != "0"

	_ctrls.results.orphans.text = str(summary_json.orphans)
	_ctrls.results.orphans.get_parent().visible = (
		_ctrls.results.orphans.text != "0" and !_gut_config.options.hide_orphans
	)

	if summary_json.tests == 0:
		_light_color = Color(1, 0, 0, .75)
	elif summary_json.failures != 0:
		_light_color = Color(1, 0, 0, .75)
	elif summary_json.pending != 0:
		_light_color = Color(1, 1, 0, .75)
	else:
		_light_color = Color(0, 1, 0, .75)
	_ctrls.light.visible = true
	_ctrls.light.queue_redraw()


func set_current_script(script):
	if script:
		if _is_test_script(script):
			var file = script.resource_path.get_file()
			_last_selected_path = script.resource_path.get_file()
			_ctrls.run_at_cursor.activate_for_script(script.resource_path)


func set_interface(value):
	_interface = value
	_interface.get_script_editor().connect(
		"editor_script_changed", Callable(self, "_on_editor_script_changed")
	)

	var ste = ScriptTextEditors.new(_interface.get_script_editor())
	_ctrls.run_results.set_interface(_interface)
	_ctrls.run_results.set_script_text_editors(ste)
	_ctrls.run_at_cursor.set_script_text_editors(ste)
	set_current_script(_interface.get_script_editor().get_current_script())


func set_plugin(value):
	_gut_plugin = value


func set_panel_button(value):
	_panel_button = value


# ------------------------------------------------------------------------------
# Write a file.
# ------------------------------------------------------------------------------
func write_file(path, content):
	var f = FileAccess.open(path, FileAccess.WRITE)
	if f != null:
		f.store_string(content)
	f = null

	return FileAccess.get_open_error()


# ------------------------------------------------------------------------------
# Returns the text of a file or an empty string if the file could not be opened.
# ------------------------------------------------------------------------------
func get_file_as_text(path):
	var to_return = ""
	var f = FileAccess.open(path, FileAccess.READ)
	if f != null:
		to_return = f.get_as_text()
	f = null
	return to_return


# ------------------------------------------------------------------------------
# return if_null if value is null otherwise return value
# ------------------------------------------------------------------------------
func nvl(value, if_null):
	if value == null:
		return if_null
	else:
		return value