extends CanvasLayer
class_name Receipt

## The incident report. When a meltdown ends, HR itemizes what you broke DURING that
## window and prints it, line by line, on green-bar paper: OBJECT · unit $ · ×N, then
## the total, then DEDUCTED FROM PAY. It's the comedy payoff the payslip earns — a
## reading of score data you already have, with a dot-matrix chirp per line.
##
## No textures, no fonts on disk, no audio assets. Any key or five seconds dismisses it.

const UNIT := {
	"paper": 5, "cardboard": 10, "plastic": 20, "vinyl": 25,
	"wood": 30, "glass": 40, "steel": 60, "produce": 8,
}
const LABEL := {
	"paper": "Loose paper", "cardboard": "Cardboard box", "plastic": "Moulded plastic",
	"vinyl": "Vinyl record", "wood": "Timber furniture", "glass": "Glazing / bottle",
	"steel": "Steel fixture", "produce": "Fresh produce",
}
const LINE_S := 0.11          ## seconds between printed lines

var _tally: Dictionary = {}   ## kind -> count, for the window in progress
var _panel: PanelContainer
var _label: Label
var _lines: PackedStringArray
var _shown := 0
var _tick: Timer
var _dismiss: Timer
var _chirp: AudioStreamWAV
var _printer: AudioStreamPlayer
var _active := false

func _ready() -> void:
	layer = 80
	visible = false
	_panel = PanelContainer.new()
	_panel.anchor_left = 0.5
	_panel.anchor_top = 0.5
	_panel.anchor_right = 0.5
	_panel.anchor_bottom = 0.5
	_panel.grow_horizontal = Control.GROW_DIRECTION_BOTH
	_panel.grow_vertical = Control.GROW_DIRECTION_BOTH
	var sb := StyleBoxFlat.new()
	sb.bg_color = Color(0.87, 0.90, 0.80)          # green-bar computer paper
	sb.border_color = Color(0.20, 0.22, 0.16)
	sb.set_border_width_all(2)
	sb.set_content_margin_all(18)
	sb.shadow_color = Color(0, 0, 0, 0.5)
	sb.shadow_size = 12
	_panel.add_theme_stylebox_override("panel", sb)
	add_child(_panel)

	_label = Label.new()
	var mono := SystemFont.new()
	mono.font_names = PackedStringArray(["Menlo", "SF Mono", "Courier New", "monospace"])
	_label.add_theme_font_override("font", mono)
	_label.add_theme_font_size_override("font_size", 17)
	_label.add_theme_color_override("font_color", Color(0.12, 0.14, 0.10))
	_panel.add_child(_label)

	_tick = Timer.new()
	_tick.wait_time = LINE_S
	_tick.timeout.connect(_print_next)
	add_child(_tick)
	_dismiss = Timer.new()
	_dismiss.one_shot = true
	_dismiss.wait_time = 5.0
	_dismiss.timeout.connect(hide_report)
	add_child(_dismiss)

	_chirp = _make_chirp()
	_printer = AudioStreamPlayer.new()
	_printer.stream = _chirp
	_printer.volume_db = -8.0
	add_child(_printer)

## Wire: rage.snapped -> begin_window, rage.calmed -> show_report; Main.add() each smash
## that happened while is_meltdown().
func begin_window() -> void:
	_tally.clear()

func add(kind: String, _value: int) -> void:
	_tally[kind] = int(_tally.get(kind, 0)) + 1

func show_report() -> void:
	if _tally.is_empty():
		return                       # snapped and calmed without breaking anything — no receipt
	_lines = PackedStringArray()
	_lines.append("MONSTER ROBOT PARTY  ·  INCIDENT REPORT")
	_lines.append("employee outburst — itemized")
	_lines.append("----------------------------------------")
	var total := 0
	var kinds := _tally.keys()
	kinds.sort()
	for k in kinds:
		var n := int(_tally[k])
		var unit := int(UNIT.get(k, 15))
		var sub := unit * n
		total += sub
		_lines.append("%-18s $%3d x%-2d  $%5d" % [LABEL.get(k, k.capitalize()), unit, n, sub])
	_lines.append("----------------------------------------")
	_lines.append("%-28s $%5d" % ["TOTAL DAMAGES", total])
	_lines.append("%-28s -$%4d" % ["DEDUCTED FROM PAY", total])
	_lines.append("")
	_lines.append("  [ any key ]")

	_shown = 0
	_label.text = ""
	visible = true
	_active = true
	_dismiss.stop()
	_tick.start()

func _print_next() -> void:
	if _shown >= _lines.size():
		_tick.stop()
		_dismiss.start()             # fully printed — now the 5 s auto-dismiss begins
		return
	_label.text += ("" if _shown == 0 else "\n") + _lines[_shown]
	_shown += 1
	if _lines[_shown - 1] != "":
		_printer.pitch_scale = randf_range(0.96, 1.06)
		_printer.play()

func hide_report() -> void:
	visible = false
	_active = false
	_tick.stop()
	_dismiss.stop()

func _unhandled_input(event: InputEvent) -> void:
	if not _active:
		return
	if (event is InputEventKey and event.pressed) or (event is InputEventMouseButton and event.pressed):
		# a key mid-print finishes it instantly; a key once printed dismisses it
		if _shown < _lines.size():
			_label.text = "\n".join(_lines)
			_shown = _lines.size()
			_tick.stop()
			_dismiss.start()
		else:
			hide_report()
		get_viewport().set_input_as_handled()

## A short square-wave blip — the sound of an impact printer landing one line.
func _make_chirp() -> AudioStreamWAV:
	var rate := 22050
	var n := int(rate * 0.045)
	var out := PackedFloat32Array()
	out.resize(n)
	for i in n:
		var t := float(i) / float(rate)
		var env := exp(-t * 55.0)
		out[i] = (1.0 if sin(TAU * 1400.0 * t) > 0.0 else -1.0) * 0.3 * env
	var w := AudioStreamWAV.new()
	w.format = AudioStreamWAV.FORMAT_16_BITS
	w.mix_rate = rate
	w.stereo = false
	var bytes := PackedByteArray()
	bytes.resize(n * 2)
	for i in n:
		bytes.encode_s16(i * 2, int(clampf(out[i], -1.0, 1.0) * 32767.0))
	w.data = bytes
	return w