# tests/unit/contracts/system_contracts_test.gd — 系统间接口契约断言（宁缺勿错——只断言已定稿行为）
# 运行：godot --headless --path game --script res://tests/unit/contracts/system_contracts_test.gd
# 契约线清单来源：design/dev/architecture/architecture.md「API Boundaries」表 + 各系统 AC 前言（规范源）。
# 覆盖面：
#   各系统→D2  ConfigDB 类型化单点（TABLE_MANIFEST 词表封闭——伤害单据 kind/目标规则/结账政策常量）；
#   D2↔B1     掷点用途标签 ∈ RngService 封闭词表（EC12——settlement.armor_roll_stream 成员性）；
#   B1→D1     行协议公共字段形态（open_ticket 九栏缺省 + 协议公共键）；
#   B4→B3     增益授予布尔受理口径（域闭 EC1 / 未知 id EC2 / 受理后投影）。
extends SceneTree

const ConfigDBScript := preload("res://core/config_db.gd")
const RngServiceScript := preload("res://core/rng_service.gd")
const StatusContainerScript := preload("res://core/status_container.gd")
const DamageControllerScript := preload("res://core/damage_controller.gd")
const Kit := preload("res://tests/unit/test_kit.gd")   # T6 收口：_check/汇总退出样板单点


func _init() -> void:
	var db = ConfigDBScript.new()
	var load_ok: bool = db.load_tables("res://data/tables", true)
	Kit.check("前置：表加载零 error", load_ok and db.diagnostics_count("error") == 0)
	if load_ok:
		_test_damage_controller_vocabularies()
		_test_rng_tag_closure(db)
		_test_ticket_nine_columns()
		_test_status_boolean_acceptance(db)
	quit(Kit.finish("system_contracts_test"))


# ---- B1 兑付配方词表：五配方/三目标规则/双结账政策——常量非空且互异（封闭枚举负空间） ----

func _test_damage_controller_vocabularies() -> void:
	var kinds: Array = [
		DamageControllerScript.KIND_HERO_ATTACK, DamageControllerScript.KIND_ENEMY_SKILL,
		DamageControllerScript.KIND_BOARD_TYPED, DamageControllerScript.KIND_BOARD_BLAST,
		DamageControllerScript.KIND_BOARD_FLAT_HERO,
	]
	var nonempty := true
	for k in kinds:
		if String(k).is_empty():
			nonempty = false
	Kit.check("五配方常量非空（开单面唯一分派键）", nonempty)
	var unique_kinds: Dictionary = {}
	for k in kinds:
		unique_kinds[String(k)] = true
	Kit.check("五配方常量互异（词表封闭无别名）", unique_kinds.size() == kinds.size())
	var targets: Array = [
		DamageControllerScript.TARGET_FRONT_ALIVE, DamageControllerScript.TARGET_HERO,
		DamageControllerScript.TARGET_ALL_ALIVE,
	]
	var unique_targets: Dictionary = {}
	for t in targets:
		unique_targets[String(t)] = true
	Kit.check("三目标规则常量互异（结账时刻现场解析词表）", unique_targets.size() == targets.size())
	Kit.check("双结账政策常量互异（A 即结 / B 攒批回切位）",
		String(DamageControllerScript.POLICY_IMMEDIATE) != String(DamageControllerScript.POLICY_SEGMENT))


# ---- D2↔B1：掷点用途标签 ∈ RngService 封闭词表（EC12——跨系统字面量契约的成员性断言） ----

func _test_rng_tag_closure(db) -> void:
	var stream_label: String = String(db.settlement.armor_roll_stream)
	Kit.check("settlement.armor_roll_stream ∈ RngService 封闭标签词表（EC12）",
		RngServiceScript.PURPOSE_TAGS.has(stream_label))
	Kit.check("RngService 用途标签词表非空且互异（封闭语义由流改标签）",
		RngServiceScript.PURPOSE_TAGS.size() > 0)


# ---- B1→D1 行协议：单据九栏缺省齐备 + 协议公共键形态 ----

func _test_ticket_nine_columns() -> void:
	var ctrl = _bare_controller()
	var t: Dictionary = ctrl.open_ticket(DamageControllerScript.KIND_BOARD_FLAT_HERO, "mine_hit",
		"契约探针", "棋盘兑付", 1, DamageControllerScript.TARGET_HERO, 0)
	var columns := ["kind", "source_class", "origin_cell", "round_index", "display",
		"channel", "attack_type", "base_value", "target_rule", "rider", "highlight", "context",
		"requires", "source_unit"]
	var all_present := true
	for c in columns:
		if not t.has(c):
			all_present = false
	Kit.check("单据九栏 + 可选两栏缺省齐备（开单面只写差异栏前提）", all_present)
	Kit.check("缺省无类型轴（attack_type 空 = 恒不查克制矩阵）", String(t.attack_type) == "")
	Kit.check("缺省无前置依赖（requires = -1）", int(t.requires) == -1)


func _bare_controller():
	var db = ConfigDBScript.new()
	# 只取 open_ticket 纯构造面——容器/依赖传桩（构造期不消费）
	var units = UnitContainerStub.new()
	var effects = StatusContainerStub.new()
	return DamageControllerScript.new(db, RngStub.new(), units, effects)


# 桩容器：构造期零消费（DamageController._init 只 connect unit_died 信号——桩需同名信号）
class UnitContainerStub:
	signal unit_died(u: Dictionary)


class StatusContainerStub:
	pass


class RngStub:
	pass


# ---- B4→B3：增益授予布尔受理口径（受理/拒绝二元面 + 投影一致性） ----

func _test_status_boolean_acceptance(db) -> void:
	var effects = StatusContainerScript.new(db)
	# EC1 域闭：notify_battle_start 前授予 = false（受理面封闭）
	var any_row: Dictionary = {}
	if db.status_effects.rows.size() > 0:
		any_row = db.status_effects.rows[0]
	Kit.check("前置：状态表非空", not any_row.is_empty())
	if any_row.is_empty():
		return
	var probe_id: String = String(any_row.effect_id)
	var src := {"source_class": "safe_cell", "origin_cell": Vector2i(-1, -1), "round_index": 0}
	Kit.check("域闭授予拒绝（EC1——战斗域外 apply_effect = false）", effects.apply_effect(probe_id, src) == false)
	Kit.check("未知 effect_id 拒绝（EC2）", effects.apply_effect("no_such_effect_id__", src) == false)
	effects.notify_battle_start()
	Kit.check("开域后受理已知 id（布尔受理口径 true 通道）", effects.apply_effect(probe_id, src) == true)
	var active: Array = effects.query_active(String(any_row.target_side))
	var projected := false
	for a in active:
		if String(a.effect_id) == probe_id:
			projected = int(a.effective_value) == int(a.layers) * int(a.snap_magnitude)
	Kit.check("受理后投影 effective_value = 层数×授予时快照（抗热重载 EC9 面）", projected)