class_name CremationPyre extends Workbench
## Phase 14 — Cremation pyre furniture.
##
## Subclasses Workbench to reuse the build + bill machinery.  The pyre uses a
## special `cremate_corpse` recipe that consumes a Corpse entity (hauled as
## Item.TYPE_CORPSE by the crafting toil's pickup-ingredient step) and 5 wood,
## producing 1 ash item dropped adjacent on completion.
##
## Variant appearance: label_text = "Pyre" triggers the _draw_pyre() branch
## (overrides _draw() in Workbench).  accepted_skill = "manual_labor" (any
## laborer can cremate; no Crafting threshold needed).
##
## EventBus.corpse_cremated(corpse, pyre) is emitted on craft completion.
## The Corpse node is queue_free'd after the signal fires.
##
## Stub gap (documented):
##   The existing single-ingredient Recipe supports one ingredient_type.
##   cremate_corpse needs 1 corpse + 5 wood.  This is expressed via
##   ingredient2_type / ingredient2_count extended fields on Recipe
##   (added in Phase 14 — see recipe.gd).  CraftingProvider's ingredient
##   pickup step must be updated to check ingredient2 before assigning a
##   pawn; until that update lands, the pyre will work as a single-ingredient
##   recipe (corpse-only) and the 5-wood secondary requirement is NOT enforced
##   at runtime.  This is the documented Phase 14 Agent C stub gap.
##
## World registration: shares Workbench.register_workbench /
## unregister_workbench (called by the parent's _ready / _exit_tree).

## Override label so Workbench._complete() logs "Pyre built at …"
## and _draw() dispatches to _draw_pyre().
func _init() -> void:
	label_text = "Pyre"
	accepted_skill = &"manual_labor"


func _ready() -> void:
	label_text = "Pyre"
	accepted_skill = &"manual_labor"
	super._ready()
	# Auto-populate a default FOREVER bill for the cremate_corpse recipe so
	# the pyre is immediately usable once built.
	var b := Bill.new()
	b.recipe = RecipeCatalog.cremate_corpse()
	b.mode = Bill.Mode.FOREVER
	bills.append(b)
	Audit.log("pyre", "CremationPyre ready at %s — bill added" % tile)


# ── craft-cycle hook override ─────────────────────────────────────────────────

## Called by JobRunner._tick_craft when a cremate_corpse craft completes.
## Drops an ash item adjacent to the pyre, emits corpse_cremated, and frees
## the Corpse entity that was consumed as an ingredient.
##
## The `pawn` argument is the pawn who completed the craft; used only for
## the "cremated_friend" thought signal path in EventBus listeners.
##
## NOTE: The standard Workbench.on_craft_complete() is called by JobRunner
## before this override runs (it clears current_bill / current_work_progress).
## We override at the pyre level to inject the ash-drop + signal + corpse-free
## after the base logic.  JobRunner calls on_craft_complete() directly, so we
## shadow it here.
func on_craft_complete() -> void:
	# Base Workbench cleanup (clears current_bill, resets work progress).
	super.on_craft_complete()

	# Find the corpse that was hauled as ingredient.  Prefer the transient
	# reference set by JobRunner (reliable regardless of corpse tile position);
	# fall back to proximity scan only if the field is somehow unset.
	var consumed_corpse = _last_consumed_ingredient if _last_consumed_ingredient != null \
		and is_instance_valid(_last_consumed_ingredient) \
		else _find_consumed_corpse()

	# Drop 1 ash item on an adjacent walkable tile (same pattern as
	# Tree.fell() / Workbench output drops elsewhere in Phase 6).
	var drop_tile := _pick_adjacent_drop_tile()
	if drop_tile != Vector2i(-1, -1):
		var ash := load("res://scenes/entities/item.tscn").instantiate()
		get_parent().add_child(ash)
		ash.setup(Item.TYPE_ASH, 1, drop_tile)
		Audit.log("pyre", "Pyre at %s: cremation complete — ash dropped at %s" % [tile, drop_tile])
	else:
		Audit.log("pyre", "Pyre at %s: cremation complete — no adjacent tile for ash drop" % tile)

	# Emit and clean up corpse.
	if consumed_corpse != null:
		Audit.log("pyre", "Pyre at %s: cremated '%s'" % [tile, consumed_corpse.deceased_name])
		EventBus.corpse_cremated.emit(consumed_corpse, self)
		consumed_corpse.queue_free()
	else:
		# Defensive: corpse may have already been freed by decay or another
		# system during the crafting window.
		Audit.log("pyre", "Pyre at %s: cremation complete but no corpse found (already freed?)" % tile)


# ── render ─────────────────────────────────────────────────────────────────────

## Override Workbench._draw() to dispatch to _draw_pyre() for the "Pyre" label.
func _draw() -> void:
	var alpha: float = 1.0 if is_completed() else 0.4
	_draw_pyre(alpha)


func _draw_pyre(alpha: float) -> void:
	# Simple log-pile silhouette: dark-brown stone base with orange ember
	# and ash-grey smoke wisps, suggesting an outdoor funeral pyre.
	var base_top   := Color(0.30, 0.22, 0.12, alpha)   # charred wood / dirt
	var base_front := Color(0.22, 0.15, 0.08, alpha)
	var ember      := Color(0.95, 0.45, 0.10, alpha)
	var ash_grey   := Color(0.70, 0.68, 0.65, alpha * 0.7)
	var outline    := Color(0.12, 0.08, 0.04, 0.7 * alpha)

	# Top face — dark charred surface.
	draw_rect(Rect2(Vector2(-8.0, -16.0), Vector2(16.0, 5.0)), base_top)
	# Front face — very dark wood body.
	draw_rect(Rect2(Vector2(-8.0, -11.0), Vector2(16.0, 11.0)), base_front)
	# Ember glow — wide orange strip across the front, suggesting hot coals.
	draw_rect(Rect2(Vector2(-5.0, -4.0), Vector2(10.0, 3.0)), ember)
	# Smoke wisps — three thin vertical rects rising above the top face.
	draw_rect(Rect2(Vector2(-3.0, -18.0), Vector2(1.0, 3.0)), ash_grey)
	draw_rect(Rect2(Vector2(0.5, -19.0),  Vector2(1.0, 4.0)), ash_grey)
	draw_rect(Rect2(Vector2(3.0, -17.0),  Vector2(1.0, 2.0)), ash_grey)
	# Horizon line.
	draw_line(Vector2(-8.0, -11.0), Vector2(8.0, -11.0), base_top, 1.0)
	# Tile outline.
	draw_rect(Rect2(Vector2(-8.0, -16.0), Vector2(16.0, 16.0)), outline, false, 1.0)


# ── helpers ───────────────────────────────────────────────────────────────────

## Scan World.corpses for the nearest corpse within 2 tiles (the crafting toil
## would have moved it to the pyre tile or an adjacent tile).  Returns null if
## none found.
func _find_consumed_corpse():
	var best = null
	var best_d: int = 3   # max search radius
	for c in World.corpses:
		var d: int = abs(c.tile.x - tile.x) + abs(c.tile.y - tile.y)
		if d < best_d:
			best_d = d
			best = c
	return best


## Return a walkable adjacent tile for the ash drop.  Prefers the 4 cardinal
## neighbours in a fixed priority order; falls back to the pyre's own tile if
## all neighbours are blocked.
func _pick_adjacent_drop_tile() -> Vector2i:
	var candidates: Array[Vector2i] = [
		tile + Vector2i(1, 0),
		tile + Vector2i(-1, 0),
		tile + Vector2i(0, 1),
		tile + Vector2i(0, -1),
	]
	for c in candidates:
		if World.pathfinder != null and World.pathfinder.is_walkable(c):
			return c
	return tile  # fallback: drop on the pyre tile itself