extends SceneTree
## Dev helper: run the game windowed and capture staged screenshots for the
## README (day set + LATE-night set with street lamps and flashlight).
## Saves 1280x720 PNGs to user://screenshots/.
## Usage: godot --path . --script res://src/test/capture_screenshots.gd

const OUT_DIR := "user://screenshots"
const MAX_FRAMES := 3600 # hard cap (~60s)

var frames := 0
var gm: Node = null
var state := 0
var state_frames := 0
var targeted := false

func _initialize() -> void:
	root.size = Vector2i(1600, 900)
	var packed: PackedScene = load("res://scenes/main.tscn")
	var inst: Node = packed.instantiate()
	root.add_child(inst)

func _process(_delta: float) -> bool:
	frames += 1
	# The main scene's _ready may not have run when _initialize added it;
	# look for GameManager lazily each frame until it exists.
	if gm == null:
		gm = root.find_child("GameManager", true, false)
		if gm == null and frames > 120:
			push_error("GameManager not found")
			quit(1)
			return true
	if frames > MAX_FRAMES:
		print("timeout reached")
		quit(0)
		return true
	_advance()
	return false

func _advance() -> void:
	state_frames += 1
	match state:
		0:
			# 2s overview from the guard post (early morning light).
			if state_frames >= 120:
				_shoot("01-venue-overview.png")
				state = 1
				state_frames = 0
		1:
			# Wait for a nearby NPC so the interaction HUD has a target.
			if gm != null and gm.npcs.size() > 0:
				gm.call("_cycle_nearby_target")
				targeted = true
				state = 2
				state_frames = 0
		2:
			if state_frames >= 30:
				_shoot("02-targeting-npc.png")
				if targeted and gm != null:
					gm.call("_toggle_inspection")
				state = 3
				state_frames = 0
		3:
			if state_frames >= 30:
				_shoot("03-access-inspection.png")
				if gm != null:
					gm.hud.hide_inspection()
					if gm.npcs.size() > 0:
						gm.call("_cycle_nearby_target")
						gm.call("_open_radio", false)
				state = 4
				state_frames = 0
		4:
			if state_frames >= 30:
				_shoot("04-radio-report.png")
				# Close the radio form, then jump the shift to the LATE phase.
				if gm != null:
					gm.radio_panel.hide()
					gm.coordinator.elapsed_s = 750.0
				state = 5
				state_frames = 0
		5:
			# Let the phase transition (and street lamps / marquee) settle, then
			# take the night avenue shot.
			if state_frames >= 90:
				_shoot("05-late-night-avenue.png")
				if gm != null:
					gm.call("_toggle_flashlight")
				state = 6
				state_frames = 0
		6:
			if state_frames >= 40:
				_shoot("06-night-flashlight.png")
				state = 7
				quit(0)

func _shoot(file_name: String) -> void:
	var dir := DirAccess.open("user://")
	if dir == null or not dir.dir_exists("screenshots"):
		dir.make_dir_recursive("screenshots")
	var img: Image = root.get_texture().get_image()
	var err := img.save_png(OUT_DIR.path_join(file_name))
	print("%s -> err=%d (%dx%d)" % [file_name, err, img.get_width(), img.get_height()])