extends Node3D
## Spike T-1089 Synty intake — 11-body batch QA scene (THROWAWAY, lives in
## client/spike_synty_qa/ only for the res:// path; source of truth is
## spikes/synty-intake/scripts/qa_bodies.gd).
##
## For each body type on disk: builds a CharacterVisual, reparents that
## body's refitted Synty torso garment onto its skeleton (mirrors
## character_visual.gd:517-535), screenshots idle front, then plays Walk
## and screenshots two stride phases (front + side). Peasant pants/shoes
## are added only for bodies that have them on disk. Saves to
## spikes/synty-intake/out/qa_bodies/, then quits.

const BODIES_GLB_DIR := "res://spike_synty_qa/bodies/"
const SHOT_DIR := "/var/mnt/data/projects/settled-reach/spikes/synty-intake/out/qa_bodies/"
const CLOTHING_DIR := "res://assets/characters/clothing/"

const BODY_KEYS: Array[String] = [
	"average_m", "average_f", "muscular_m", "muscular_f",
	"thin_m", "thin_f", "heavy_m", "heavy_f",
	"teen_m", "teen_f", "child",
]

const KEY_TO_ENUM := {
	"average_m": CharacterVisualDescriptor.BodyType.AVERAGE_M,
	"average_f": CharacterVisualDescriptor.BodyType.AVERAGE_F,
	"muscular_m": CharacterVisualDescriptor.BodyType.MUSCULAR_M,
	"muscular_f": CharacterVisualDescriptor.BodyType.MUSCULAR_F,
	"thin_m": CharacterVisualDescriptor.BodyType.THIN_M,
	"thin_f": CharacterVisualDescriptor.BodyType.THIN_F,
	"heavy_m": CharacterVisualDescriptor.BodyType.HEAVY_M,
	"heavy_f": CharacterVisualDescriptor.BodyType.HEAVY_F,
	"teen_m": CharacterVisualDescriptor.BodyType.TEEN_M,
	"teen_f": CharacterVisualDescriptor.BodyType.TEEN_F,
	"child": CharacterVisualDescriptor.BodyType.CHILD,
}

var _cam: Camera3D = null


func _ready() -> void:
	_setup_stage()
	_run_qa.call_deferred()


func _setup_stage() -> void:
	var light := DirectionalLight3D.new()
	light.rotation_degrees = Vector3(-45, 30, 0)
	light.light_energy = 1.2
	add_child(light)

	var env := Environment.new()
	env.ambient_light_source = Environment.AMBIENT_SOURCE_COLOR
	env.ambient_light_color = Color(0.8, 0.8, 0.85)
	env.ambient_light_energy = 0.9
	env.background_mode = Environment.BG_COLOR
	env.background_color = Color(0.18, 0.19, 0.22)
	var we := WorldEnvironment.new()
	we.environment = env
	add_child(we)

	_cam = Camera3D.new()
	add_child(_cam)


func _cam_front(h: float) -> void:
	_cam.position = Vector3(0, h * 0.72, h * 0.85)
	_cam.look_at_from_position(_cam.position, Vector3(0, h * 0.62, 0), Vector3.UP)


func _cam_side(h: float) -> void:
	_cam.position = Vector3(h * 0.85, h * 0.72, 0)
	_cam.look_at_from_position(_cam.position, Vector3(0, h * 0.62, 0), Vector3.UP)


func _attach_garment(skel: Skeleton3D, glb_path: String) -> Array[MeshInstance3D]:
	var out: Array[MeshInstance3D] = []
	var scene := load(glb_path) as PackedScene
	if scene == null:
		push_error("QA: garment GLB failed to load: " + glb_path)
		return out
	var inst := scene.instantiate()
	var stack: Array[Node] = [inst]
	while not stack.is_empty():
		var n: Node = stack.pop_back()
		for c in n.get_children():
			stack.append(c)
		if n is MeshInstance3D and (n as MeshInstance3D).skin != null:
			var mi := n as MeshInstance3D
			mi.get_parent().remove_child(mi)
			mi.owner = null
			skel.add_child(mi)
			out.append(mi)
	inst.queue_free()
	return out


func _shot(fname: String) -> void:
	await RenderingServer.frame_post_draw
	var img := get_viewport().get_texture().get_image()
	img.save_png(SHOT_DIR + fname)
	print("QA: saved ", fname)


func _wait_frames(n: int) -> void:
	for i in n:
		await get_tree().process_frame


func _run_qa() -> void:
	DirAccess.make_dir_recursive_absolute(SHOT_DIR)
	for body_key: String in BODY_KEYS:
		var glb := BODIES_GLB_DIR + "SK_SCFI_CIVL_09_10TORS_HU01_%s.glb" % body_key
		if not ResourceLoader.exists(glb):
			print("QA: MISSING garment GLB for ", body_key, " — skipped")
			continue

		var cv := CharacterVisual.new()
		add_child(cv)

		var desc := CharacterVisualDescriptor.new()
		desc.body_type = KEY_TO_ENUM[body_key]
		desc.head_id = "head_001"
		desc.hair_id = "buzzed"
		desc.eyebrow_id = "regular"
		desc.skin_tone = 3
		var slots := {}
		if ResourceLoader.exists(CLOTHING_DIR + "peasant_pants/%s.glb" % body_key):
			slots["legs"] = "peasant_pants"
		if ResourceLoader.exists(CLOTHING_DIR + "peasant_shoes/%s.glb" % body_key):
			slots["feet"] = "peasant_shoes"
		desc.clothing_slots = slots
		cv.load_descriptor(desc)

		var skel := cv.get_skeleton()
		if skel == null:
			push_error("QA: no skeleton for " + body_key)
			cv.queue_free()
			continue
		print("QA[", body_key, "]: skeleton bones = ", skel.get_bone_count(),
				" pants = ", slots.has("legs"))

		# rough height for camera framing (child/teen are shorter)
		var h0 := 1.75
		if body_key == "child" or body_key.begins_with("teen"):
			h0 = 1.45

		# body-only control shot BEFORE the garment — separates body-asset
		# rendering defects from garment fit defects
		await _wait_frames(5)
		_cam_front(h0)
		await _shot("%s_0_body_only.png" % body_key)

		var meshes := _attach_garment(skel, glb)
		for mi in meshes:
			print("QA[", body_key, "]: garment '", mi.name, "' skin binds = ",
					mi.skin.get_bind_count(), " aabb = ", mi.get_aabb())

		var h := h0

		await _wait_frames(5)
		_cam_front(h)
		await _shot("%s_1_idle_front.png" % body_key)

		var ap := cv.get_animation_player()
		var walk := ""
		if ap:
			for lib_name in ap.get_animation_library_list():
				var lib := ap.get_animation_library(lib_name)
				for a in lib.get_animation_list():
					var full := str(lib_name) + "/" + str(a)
					if full.to_lower().contains("walk"):
						walk = str(a)
						if full.to_lower().ends_with("/walk"):
							break
		if walk != "":
			cv.play_animation(walk)
			await _wait_frames(24)
			_cam_front(h)
			await _shot("%s_2_walk_front.png" % body_key)
			_cam_side(h)
			await _wait_frames(8)
			await _shot("%s_3_walk_side.png" % body_key)
		else:
			push_warning("QA: no walk animation for " + body_key)

		for mi in meshes:
			print("QA[", body_key, "]: post-walk garment aabb = ", mi.get_aabb())

		cv.queue_free()
		await _wait_frames(2)

	print("QA: DONE")
	get_tree().quit(0)