extends Node
class_name Gauntlet

## THE GAUNTLET — destroy every file on one client, before the clock runs out.
##
## A wall of identical cabinets. The brief names a CLIENT, never a cabinet. Every cabinet
## carries an alphabetical range on its front, so working out that HENDERSON lives in F–J
## is the whole puzzle — there is no waypoint and nothing glows.
##
## Then it's granular on purpose: pull each drawer, wait for it to slide, and destroy the
## folders individually. Doing that with bare hands inside the time limit is not really
## possible.
##
## THE PERFECT TOOL. Every level hides one tool that makes its gauntlet tractable — here
## it's the SHREDDER, which eats a whole open drawer in one go. The game never tells you
## that. Noticing the shredder in the corner and realising what it's for IS the level.
## Getting it wrong isn't fatal, just slow, which is the right shape for a secret: it
## rewards the observant without punishing everyone else with a hard fail.
##
## Godot 4.7 GDScript 2.0.

const RANGES := ["A–E", "F–J", "K–O", "P–T", "U–Z"]
const CLIENTS := {
	"A–E": ["ABERNATHY", "CULVER", "DUNMORE", "BRATTON"],
	"F–J": ["HENDERSON", "GRIEVES", "IRONSIDE", "JAKUB"],
	"K–O": ["KOWALSKI", "MERRIWEATHER", "NAKAMURA", "OSGOOD"],
	"P–T": ["PENHALIGON", "QUAYLE", "SOMMERS", "TRENT"],
	"U–Z": ["VANCE", "WHITTAKER", "YARDLEY", "ZIEGLER"],
}

## Generous: you stand ~2.2 m back to read the labels, your eye is 1.6 m up and the
## bottom drawer is at 0.10 m, so the true distance to a drawer is well over 2 m even
## when you're clearly standing at it.
const REACH := 2.9
const SHRED_REACH := 1.9

@export var time_limit: float = 180.0

var running := false
var time_left := 0.0
var result := ""
var client := ""
var target_range := ""

var _cabs: Array[Cabinet] = []
var _target: Cabinet = null
var _shredder: Node3D = null
var _player: Node3D
var _hud: Hud
var _found_shredder := false

signal finished()

func setup(player: Node3D, hud: Hud) -> void:
	_player = player
	_hud = hud

## Build the bank of cabinets. `wire` hooks each Smashable into Main's signal routing.
func begin(host: Node3D, origin: Vector3, yaw: float, wire: Callable,
		shredder: Node3D) -> void:
	for c in _cabs:
		if is_instance_valid(c):
			c.queue_free()
	_cabs.clear()
	_shredder = shredder
	_found_shredder = false

	var ranges := RANGES.duplicate()
	var basis := Basis(Vector3.UP, yaw)
	for i in ranges.size():
		var cab := Cabinet.new()
		var off := basis * Vector3((float(i) - 2.0) * 0.62, 0.0, 0.0)
		cab.setup(host, origin + off, yaw, String(ranges[i]), wire)
		_cabs.append(cab)

	_target = _cabs[randi() % _cabs.size()]
	_target.is_target = true
	target_range = _target.label_range
	var pool: Array = CLIENTS[target_range]
	client = String(pool[randi() % pool.size()])

	running = true
	time_left = time_limit
	result = ""
	if _hud != null:
		_hud.toast("DESTROY THE %s FILE — ALL OF IT" % client)

## Files left on the target client.
func remaining() -> int:
	return _target.files_remaining() if is_instance_valid(_target) else 0

func total() -> int:
	return _target.files_total() if is_instance_valid(_target) else 0

# ---------------------------------------------------------------- interaction
## Player pressed E. Opens the nearest closed drawer, or feeds an open drawer to the
## shredder if you're standing at it. Returns true if it did something.
func interact() -> bool:
	if not running or _player == null:
		return false
	var here := _player.global_position

	# at the shredder with a drawer already open? feed it the lot.
	if _shredder != null and is_instance_valid(_shredder):
		if here.distance_to(_shredder.global_position) < SHRED_REACH:
			return _shred()

	var best_cab: Cabinet = null
	var best_i := -1
	var best_d := INF
	for c in _cabs:
		if not is_instance_valid(c):
			continue
		var i := c.nearest_closed(here, REACH)
		if i < 0:
			continue
		var d: float = c.drawers[i].global_position.distance_to(here)
		if d < best_d:
			best_d = d
			best_cab = c
			best_i = i
	if best_cab == null:
		return false
	best_cab.open(best_i)
	return true

## The shredder eats every folder in every OPEN drawer within reach of it. This is the
## payoff for working out what the shredder is for.
func _shred() -> bool:
	var ate := 0
	for c in _cabs:
		if not is_instance_valid(c):
			continue
		for i in Cabinet.DRAWERS:
			if not c.is_open(i):
				continue
			for f in c.drawer_files(i):
				if is_instance_valid(f):
					(f as Smashable).shatter(Vector3.UP * 0.5)
					ate += 1
	if ate == 0:
		if _hud != null:
			_hud.toast("nothing to shred — open a drawer and bring it over")
		return false
	if not _found_shredder:
		_found_shredder = true
		if _hud != null:
			_hud.toast("…oh. THAT'S what that's for.")
	return true

## True when the player is close enough to the shredder for E to mean "shred".
func at_shredder() -> bool:
	if _shredder == null or not is_instance_valid(_shredder) or _player == null:
		return false
	return _player.global_position.distance_to(_shredder.global_position) < SHRED_REACH

# ---------------------------------------------------------------- clock
func _process(dt: float) -> void:
	if not running:
		return
	if remaining() <= 0:
		_end(true)
		return
	time_left -= dt
	if time_left <= 0.0:
		time_left = 0.0
		_end(false)

func _end(won: bool) -> void:
	running = false
	if won:
		result = "%s IS GONE — %ds to spare" % [client, int(time_left)]
	else:
		result = "TIME. %s still has %d files. it was the %s drawer." % [
			client, remaining(), target_range]
	if _hud != null:
		_hud.toast(result)
	finished.emit()

func hud_line() -> String:
	if not running:
		return "GAUNTLET — %s   (G restart · M mode)" % result
	var m := int(time_left) / 60
	var s := int(time_left) % 60
	return "GAUNTLET   %d:%02d   ·   destroy every %s file   ·   %d/%d left%s" % [
		m, s, client, remaining(), total(),
		"   ·   E: SHRED" if at_shredder() else ""]