extends VBoxContainer

const Style := preload("res://scripts/ui/ui_style.gd")
var main: Control
var status: Label
var start_button: Button

func _ready() -> void:
	set_anchors_preset(Control.PRESET_FULL_RECT)
	add_theme_constant_override("separation", 14)
	var back := Button.new(); back.text = "< Step 3 modes"; back.size_flags_horizontal = Control.SIZE_SHRINK_BEGIN
	Style.style_chip(back, Style.CYAN); back.pressed.connect(func(): main.show_screen("selection", "step3")); add_child(back)
	var title := Label.new(); title.text = "CCS Cases"; Style.set_label(title, 34, Style.TEXT); add_child(title)
	var note := Label.new(); note.text = "Manage a simulated patient through examination, orders, treatment, location, and time."; Style.set_label(note, 16, Style.MUTED); add_child(note)
	status = Label.new(); Style.set_label(status, 15, Style.CYAN); add_child(status)
	start_button = Button.new()
	start_button.text = "Start Timed Case"
	start_button.custom_minimum_size = Vector2(280, 64)
	start_button.size_flags_horizontal = Control.SIZE_SHRINK_BEGIN
	Style.style_primary_button(start_button)
	start_button.pressed.connect(_start)
	add_child(start_button)
	var spacer := Control.new(); spacer.size_flags_vertical = Control.SIZE_EXPAND_FILL; add_child(spacer)
	var history := Button.new(); history.text = "Case History"; history.size_flags_horizontal = Control.SIZE_SHRINK_BEGIN
	Style.style_chip(history, Style.CYAN); history.pressed.connect(func(): main.show_screen("ccs_history")); add_child(history)
	CCSService.cases_changed.connect(_render)
	CCSService.attempt_changed.connect(_attempt_ready)
	CCSService.request_failed.connect(_on_request_failed)

func on_show(_payload: Variant = null) -> void:
	status.text = "Loading cases..."
	CCSService.load_cases()

func _render() -> void:
	status.text = "No published cases are available yet." if CCSService.cases.is_empty() else "%d cases available" % CCSService.cases.size()
	start_button.disabled = CCSService.cases.is_empty()

func _start() -> void:
	status.text = "Starting case..."
	start_button.disabled = true
	CCSService.create_attempt("", "timed")

func _attempt_ready() -> void:
	if visible and not CCSService.attempt.is_empty(): main.show_screen("ccs_player")

func _on_request_failed(message: String) -> void:
	status.text = message
	start_button.disabled = CCSService.cases.is_empty()