# test_item_split_parity.gd —— 40250 物品精准拆分与快捷操作 1:1 纯净回归测试套件
extends SceneTree

const ItemSplitSystem = preload("res://item_split_system.gd")

var _passed := 0
var _failed := 0

class FakeClient extends Node:
	var move_calls: Array = []
	var sell_calls: Array = []
	var move_ok := true
	var sell_ok := true

	func move_item(fw: int, fc: int, tw: int, tc: int, count: int) -> bool:
		move_calls.append([fw, fc, tw, tc, count])
		return move_ok

	func shop_sell(cell: int, count: int) -> bool:
		sell_calls.append([cell, count])
		return sell_ok

func _assert(cond: bool, msg: String) -> void:
	if cond:
		_passed += 1
		print("  [PASS] %s" % msg)
	else:
		_failed += 1
		printerr("  [FAIL] %s" % msg)

func _init() -> void:
	print("\n=== Running test_item_split_parity (Direction 3: Item Split & Quick Sell 1:1) ===")
	_test_item_stack_splitting()
	_test_quick_sell_to_shop()
	_test_drop_safety_confirmation()
	_finish()

func _test_item_stack_splitting() -> void:
	print("\n--- Test 1: Stack Splitting (Shift + Left Click) ---")
	var iss := ItemSplitSystem.new()
	var client := FakeClient.new()
	var inv: Array = [
		{"vnum": 27003, "name": "红药水(大)", "count": 200}, # Slot 0
		{"vnum": 10, "name": "木剑+0", "count": 1},         # Slot 1 (single)
		null,                                              # Slot 2 (empty)
		null                                               # Slot 3 (empty)
	]

	# 1. Split single count item
	var r_single = iss.split_item(1, 1, 2, inv)
	_assert(r_single["ok"] == false and r_single["reason"] == "NOT_SPLITTABLE", "Single count item rejected for split")

	# 2. Split count >= total count
	var r_overflow = iss.split_item(0, 200, 2, inv)
	_assert(r_overflow["ok"] == false and r_overflow["reason"] == "INVALID_SPLIT_COUNT", "Split count >= total rejected")

	# 3. Valid split: Split 50 from 200 into slot 2
	var split_signal := {"fired": false, "src": -1, "dst": -1, "cnt": 0}
	iss.item_split.connect(func(s: int, d: int, c: int):
		split_signal["fired"] = true
		split_signal["src"] = s
		split_signal["dst"] = d
		split_signal["cnt"] = c
	)

	var r_split = iss.split_item(0, 50, 2, inv, client)
	_assert(r_split["ok"] == true, "Split 50 potions succeeded")
	_assert(r_split["pending"] == true and client.move_calls == [[1, 0, 1, 2, 50]],
			"Split sends CG_ITEM_MOVE with source, destination and count")
	_assert(inv[0]["count"] == 200 and inv[2] == null,
			"Split request does not mutate local inventory before GC confirmation")
	_assert(not split_signal["fired"], "legacy item_split is not emitted before server confirmation")

	# 4. Auto-find empty slot when target_slot is -1
	# Simulate the first request's destination after a server GC confirmation;
	# the helper itself must still not mutate this snapshot.
	inv[2] = {"vnum": 27003, "count": 50}
	var r_auto = iss.split_item(0, 30, -1, inv, client)
	_assert(r_auto["ok"] == true, "Auto-find split succeeded")
	_assert(r_auto["target_slot"] == 3, "Auto-placed into slot 3")
	_assert(client.move_calls[-1] == [1, 0, 1, 3, 30],
			"Auto split sends the selected empty destination")
	_assert(inv[3] == null and inv[0]["count"] == 200,
			"Auto split also waits for server confirmation")
	client.free()

func _test_quick_sell_to_shop() -> void:
	print("\n--- Test 2: Quick Sell to NPC Shop (Ctrl + Right Click) ---")
	var iss := ItemSplitSystem.new()
	var client := FakeClient.new()
	var player_data := {"gold": 1000}
	var inv: Array = [
		{"vnum": 10, "name": "木剑+0", "count": 1, "sale_price": 50, "is_locked": true}, # Locked
		{"vnum": 27001, "name": "小红药水", "count": 20, "sale_price": 100}                # 20 x 100 = 2000
	]

	# 1. Locked item cannot be sold
	var r_lock = iss.quick_sell_item(0, inv, player_data)
	_assert(r_lock["ok"] == false and r_lock["reason"] == "ITEM_LOCKED", "Locked item quick sell blocked")

	# 2. Valid quick sell
	var sell_signal := {"fired": false, "count": 0}
	iss.item_quick_sell_requested.connect(func(_s: int, c: int, _n: String):
		sell_signal["fired"] = true
		sell_signal["count"] = c
	)

	var r_sell = iss.quick_sell_item(1, inv, player_data, client)
	_assert(r_sell["ok"] == true, "Quick sell succeeded")
	_assert(r_sell["pending"] == true and client.sell_calls == [[1, 20]],
			"Quick sell sends CG_SHOP SELL2 with cell and count")
	_assert(inv[1] != null and inv[1]["count"] == 20,
			"Quick sell does not clear local item before server confirmation")
	_assert(player_data["gold"] == 1000, "Quick sell does not add local gold before confirmation")
	_assert(sell_signal["fired"] and sell_signal["count"] == 20,
			"item_quick_sell_requested signal records pending request")
	client.free()

func _test_drop_safety_confirmation() -> void:
	print("\n--- Test 3: Drop Safety Check for Valuable Equipment ---")
	var iss := ItemSplitSystem.new()

	# 1. Locked item
	var locked_item := {"vnum": 169, "name": "战神之剑+9", "is_locked": true}
	var r1 = iss.check_drop_safety(locked_item)
	_assert(r1["can_drop"] == false and r1["reason"] == "ITEM_LOCKED", "Locked item drop blocked")

	# 2. +9 equipment requires confirmation
	var high_refine := {"vnum": 169, "name": "战神之剑+9", "refine_level": 9, "is_locked": false}
	var r2 = iss.check_drop_safety(high_refine)
	_assert(r2["can_drop"] == true and r2["require_confirm"] == true, "+9 weapon requires confirmation")

	# 3. Item with bonus attributes requires confirmation
	var bonus_item := {"vnum": 10, "name": "木剑+0", "attributes": [{"type": 1, "value": 500}], "is_locked": false}
	var r3 = iss.check_drop_safety(bonus_item)
	_assert(r3["can_drop"] == true and r3["require_confirm"] == true, "Item with bonuses requires confirmation")

	# 4. Plain +0 item requires no confirmation
	var plain_item := {"vnum": 10, "name": "木剑+0", "refine_level": 0, "is_locked": false}
	var r4 = iss.check_drop_safety(plain_item)
	_assert(r4["can_drop"] == true and r4["require_confirm"] == false, "Plain item drops without confirmation")

func _finish() -> void:
	print("\n==========================================")
	print("Item Split Parity Test Results: %d Passed, %d Failed" % [_passed, _failed])
	print("==========================================")
	if _failed > 0:
		quit(1)
	else:
		quit(0)