extends VBoxContainer

const Brand := preload("res://scripts/ui/medmind_style.gd")

var editor: TextEdit
var status_label: Label
var count_label: Label
var conflict_panel: PanelContainer
var applying_content := false
var notes_service: Node
var theme_service: Node


func _ready() -> void:
	notes_service = get_node("/root/NotesService")
	theme_service = get_node("/root/UIThemeService")
	size_flags_horizontal = Control.SIZE_EXPAND_FILL
	size_flags_vertical = Control.SIZE_EXPAND_FILL
	add_theme_constant_override("separation", 10)

	var metadata_row := HBoxContainer.new()
	metadata_row.add_theme_constant_override("separation", 12)
	add_child(metadata_row)
	status_label = Label.new()
	status_label.size_flags_horizontal = Control.SIZE_EXPAND_FILL
	Brand.apply_font(status_label)
	metadata_row.add_child(status_label)
	count_label = Label.new()
	Brand.apply_font(count_label)
	metadata_row.add_child(count_label)

	editor = TextEdit.new()
	editor.placeholder_text = "Write notes..."
	editor.wrap_mode = TextEdit.LINE_WRAPPING_BOUNDARY
	editor.size_flags_horizontal = Control.SIZE_EXPAND_FILL
	editor.size_flags_vertical = Control.SIZE_EXPAND_FILL
	editor.custom_minimum_size = Vector2(0, 260)
	editor.add_theme_font_override("font", Brand.font)
	editor.add_theme_font_size_override("font_size", 17)
	editor.text_changed.connect(_on_text_changed)
	add_child(editor)

	conflict_panel = PanelContainer.new()
	conflict_panel.visible = false
	add_child(conflict_panel)
	var conflict_content := VBoxContainer.new()
	conflict_content.add_theme_constant_override("separation", 8)
	conflict_panel.add_child(conflict_content)
	var conflict_message := Label.new()
	conflict_message.text = "This note changed on another device. Choose which version to keep."
	conflict_message.autowrap_mode = TextServer.AUTOWRAP_WORD_SMART
	Brand.apply_font(conflict_message)
	conflict_content.add_child(conflict_message)
	var conflict_actions := HBoxContainer.new()
	conflict_actions.add_theme_constant_override("separation", 8)
	conflict_content.add_child(conflict_actions)
	var keep_draft := Button.new()
	keep_draft.text = "Keep my draft"
	keep_draft.pressed.connect(notes_service.resolve_conflict_keep_draft)
	conflict_actions.add_child(keep_draft)
	var use_synced := Button.new()
	use_synced.text = "Use synced version"
	use_synced.pressed.connect(notes_service.resolve_conflict_use_synced)
	conflict_actions.add_child(use_synced)

	notes_service.content_changed.connect(_on_service_content_changed)
	notes_service.state_changed.connect(_on_service_state_changed)
	theme_service.theme_changed.connect(_on_theme_changed)
	_refresh_from_service()
	_apply_theme()


func activate() -> void:
	notes_service.ensure_loaded()
	_refresh_from_service()


func focus_editor() -> void:
	editor.grab_focus()


func _on_text_changed() -> void:
	if applying_content:
		return
	if editor.text.length() > notes_service.MAX_CONTENT_LENGTH:
		var caret_line := editor.get_caret_line()
		var caret_column := editor.get_caret_column()
		applying_content = true
		editor.text = editor.text.left(NotesService.MAX_CONTENT_LENGTH)
		editor.set_caret_line(mini(caret_line, editor.get_line_count() - 1))
		editor.set_caret_column(caret_column)
		applying_content = false
	notes_service.set_content(editor.text)
	_refresh_metadata()


func _on_service_content_changed(value: String) -> void:
	if editor.text != value:
		applying_content = true
		editor.text = value
		applying_content = false
	_refresh_metadata()


func _on_service_state_changed(_new_state: String) -> void:
	_refresh_metadata()


func _refresh_from_service() -> void:
	_on_service_content_changed(notes_service.content)


func _refresh_metadata() -> void:
	status_label.text = notes_service.status_text()
	count_label.text = "%s / %s" % [
		_format_count(editor.text.length()),
		_format_count(notes_service.MAX_CONTENT_LENGTH)
	]
	conflict_panel.visible = notes_service.conflict_active
	status_label.add_theme_color_override(
		"font_color",
		Brand.AMBER if notes_service.state in ["dirty", "offline", "conflict"] else Brand.muted_color(theme_service.is_dark_mode()))


func _format_count(value: int) -> String:
	return "%d,%03d" % [int(floor(float(value) / 1000.0)), value % 1000] if value >= 1000 else str(value)


func _on_theme_changed(_dark: bool) -> void:
	_apply_theme()


func _apply_theme() -> void:
	var dark: bool = theme_service.is_dark_mode()
	editor.add_theme_color_override("font_color", Brand.text_color(dark))
	editor.add_theme_color_override("font_placeholder_color", Brand.muted_color(dark))
	editor.add_theme_color_override("caret_color", Brand.SKY_BLUE if dark else Brand.ROYAL_BLUE)
	editor.add_theme_color_override("selection_color", Color(Brand.ROYAL_BLUE, 0.32))
	editor.add_theme_stylebox_override("normal", Brand.field_box(dark))
	editor.add_theme_stylebox_override("focus", Brand.field_box(dark, true))
	conflict_panel.add_theme_stylebox_override("panel", Brand.content_card_box(dark, true, Brand.AMBER))
	_refresh_metadata()