extends VBoxContainer

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

func _ready() -> void:
	set_anchors_preset(Control.PRESET_FULL_RECT)
	add_theme_constant_override("separation", 14)
	var back := Button.new(); back.text = "< All exams"; back.size_flags_horizontal = Control.SIZE_SHRINK_BEGIN
	Style.style_chip(back, Style.CYAN); back.pressed.connect(func(): main.show_screen("selection", "exam")); add_child(back)
	var title := Label.new(); title.text = "CCS Case Practice"; 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)
	var scroll := ScrollContainer.new(); scroll.size_flags_vertical = Control.SIZE_EXPAND_FILL; add_child(scroll)
	list = VBoxContainer.new(); list.size_flags_horizontal = Control.SIZE_EXPAND_FILL; list.add_theme_constant_override("separation", 10); scroll.add_child(list)
	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(func(message: String): status.text = message)

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

func _render() -> void:
	for child in list.get_children(): child.queue_free()
	status.text = "No published cases are available yet." if CCSService.cases.is_empty() else "%d cases available" % CCSService.cases.size()
	for case in CCSService.cases:
		var panel := PanelContainer.new(); panel.add_theme_stylebox_override("panel", Style.panel_box(Style.SURFACE_DARK, Color("405475"))); list.add_child(panel)
		var row := HBoxContainer.new(); row.add_theme_constant_override("separation", 12); panel.add_child(row)
		var details := Label.new(); details.text = "%s\n%s  |  %d-minute case" % [case.get("title", "Untitled case"), case.get("system", ""), case.get("realTimeMinutes", 20)]
		details.size_flags_horizontal = Control.SIZE_EXPAND_FILL; Style.set_label(details, 18, Style.TEXT); row.add_child(details)
		var practice := Button.new(); practice.text = "Practice"; Style.style_chip(practice, Style.CYAN); practice.pressed.connect(_start.bind(str(case.get("externalId", "")), "practice")); row.add_child(practice)
		var timed := Button.new(); timed.text = "Timed"; Style.style_primary_button(timed); timed.pressed.connect(_start.bind(str(case.get("externalId", "")), "timed")); row.add_child(timed)

func _start(case_id: String, mode: String) -> void:
	status.text = "Starting case..."
	CCSService.create_attempt(case_id, mode)

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