# VERTICAL SLICE - NOT FOR PRODUCTION
# Validation Question: 每个非封锁格是否都携带可兑的格面资源身份，且同种子同操作逐位回放
# Date: 2026-09-10（2026-09-15 格面资源批结构性重写：库存/供给轴下线，格面资源身份面纯化）
# 地图战斗资源：格面资源的身份层——install 期身份预分配（roll_board 恰一次、消费 reward_roll 封闭流
# 恰一 scope 批：格批 + 清图批尾）· 授予期零随机 · Ready 后只读、无重掷 · 换图映射消亡。
# 安全格与雷格一视同仁（同一类型池、同一权重分布——雷安同池）；封锁格不入摇号清单。
# 极性不在资源内：「动作 × 格型」矩阵的字典定义归 GDD、路由执行归 战斗结算 授予段
# （本类只提供 polarity_row 的（类型, 极性）→ 字典行查询面）。
# 切片登记：取号约定 = randi_range(0, W-1)（实现期 ADR 事实，切片内恒定）；
# 区间行 power roll 在身份批内追加取号（伤害量值区间批——快照 power = roll 值，授予期零随机不变）。
# 实现 GDD：design/gdd/systems/战斗循环/地图战斗资源.md（v0.4 格面资源批——registry 追溯锚）
class_name RewardEconomy
extends RefCounted

var db: ConfigDb
var rng: RngServiceCore
var _phase := "unrolled"          # unrolled → ready → retired
var _eligible: Array[Dictionary] = []         # [{cell}] 行主序规范序
var _mapping := {}                # Vector2i → reward_id（正向行身份——格面资源类型由 cell_type 承载）
var _power_roll := {}             # Vector2i → 区间行 roll 值（身份批内追加取号）
var _clear_power := -1            # 清图槽区间行 roll 值（-1 = 定值行）
var _granted := {}                # Vector2i → 快照（重复受理幂等返回）
var _clear_identity := ""
var _clear_granted := false
var _clear_snapshot := {}


func _init(db_ref: ConfigDb, rng_ref: RngServiceCore) -> void:
	db = db_ref
	rng = rng_ref


# ---- install 期 roll（恰一次；Ready 相位再调拒绝）----

# eligible = 全部非封锁格（安全格 + 雷格，战斗结算 install 编排供给；封锁格不入清单）
func roll_board(eligible: Array) -> bool:
	# 相位守卫：Ready 再调 = double-roll 拒绝（E5）；Retired（换图后）= 合法新批重置（E6 roll 半）
	if _phase == "ready":
		push_warning("[地图战斗资源] roll_board 相位守卫拒绝（E5——double-roll 编排违约显式暴露）")
		return false
	if eligible.is_empty():
		_fatal("roll_board 空资格清单（E1 兜底 fail-fast——排雷玩法 不变式④前置）")
		return false
	# 行主序规范化 + 去重（排序责任不外推给 战斗结算）
	var seen := {}
	var list: Array[Dictionary] = []
	for e in eligible:
		var c: Vector2i = e.cell
		if seen.has(c):
			push_warning("[地图战斗资源] 资格清单重复格已去重: %s" % str(c))
			continue
		seen[c] = true
		list.append({"cell": c})
	list.sort_custom(func(a, b): return a.cell.y * 1000 + a.cell.x < b.cell.y * 1000 + b.cell.x)
	_eligible = list
	_granted.clear()          # 新批重置映射受理面（旧图快照消亡）
	_power_roll.clear()
	_clear_power = -1
	_clear_granted = false
	_clear_snapshot = {}
	var stream: RandomNumberGenerator = rng.open_stream("reward_roll")   # 恰一 scope 批（格批 + 清图批尾 + 区间行追加取号）
	var cell_rows: Array = _rollable_rows()      # cell 池正向行 weight>0（类型频次）
	var clear_rows: Array = _pool_rows("clear_default")
	# ① 身份批：每非封锁格恰一类型身份（雷安同池——同一行集同一权重分布）
	var draft := {}
	for e in list:
		draft[e.cell] = weighted_pick(cell_rows, stream.randi_range(0, _pool_weight(cell_rows) - 1))
	# ② 清图槽批尾：同流同批判尾摇定清图奖励对象身份
	var clear_rid := weighted_pick(clear_rows, stream.randi_range(0, _pool_weight(clear_rows) - 1))
	# ③ 区间行 power roll（身份定稿后逐格恰一追加取号，定值行零取号）
	for cell in draft.keys():
		var row: Dictionary = _row_by_id(draft[cell])
		if row.has("power_min"):
			_power_roll[cell] = stream.randi_range(int(row.power_min), int(row.power_max))
	var clear_row: Dictionary = _row_by_id(clear_rid)
	if clear_row.has("power_min"):
		_clear_power = stream.randi_range(int(clear_row.power_min), int(clear_row.power_max))
	_mapping = draft
	_clear_identity = clear_rid
	_phase = "ready"
	return true


# ---- 查询面（Ready 只读；未开格恒可查——魔法道具 桥接结构前提）----

# 相位只读出口（诊断观测面——unrolled/ready/retired；消费方禁直读 _phase 下划线字段）
func phase() -> String:
	return _phase


# 静默映射查询（批量工具用——零 E19 诊断；语义 = query_identity 非 null 的布尔投影）
func is_mapped(cell: Vector2i) -> bool:
	return _phase == "ready" and _mapping.has(cell)


func query_identity(cell: Vector2i):
	if _phase != "ready":
		_diag("query_identity 非 Ready 相位")
		return null
	var rid: String = _mapping.get(cell, "")
	if rid == "":
		_diag("query_identity 清单外坐标（E19——未分配非错误态；封锁格不入清单）")
		return null
	var row: Dictionary = _row_by_id(rid)
	return {"reward_id": rid, "cell_type": String(row.cell_type), "tier": int(row.tier)}


# 身份完整快照（轮内刷新批次隔离用——facts 缓冲期捕获，授予期 mapping 可能已换批）：
# 返回与 grant 相同结构的快照（cell_type/display_name/power/effect_id/stacks 齐备），
# 供 战斗结算 冻结授予直通
func query_full_snapshot(cell: Vector2i):
	if _phase != "ready":
		_diag("query_full_snapshot 非 Ready 相位")
		return null
	var rid: String = _mapping.get(cell, "")
	if rid == "":
		return null
	return _snapshot(_row_by_id(rid), int(_power_roll.get(cell, -1)))


# ---- 受理面（战斗结算 编排期调用；E6 收口 2026-09-13：失败统一返回 null）----

func grant(cell: Vector2i):
	if _phase != "ready":
		_diag("grant 非 Ready 相位（E4/E7）")
		return null
	if not _mapping.has(cell):
		_diag("grant 清单外坐标（E19）")
		return null
	if _granted.has(cell):
		_diag("grant 同格重复受理（E18 幂等兜底——受理恰一次归 战斗结算）")
		return _granted[cell]
	var snap := _snapshot(_row_by_id(_mapping[cell]), int(_power_roll.get(cell, -1)))
	_granted[cell] = snap
	return snap


func grant_clear():
	if _phase != "ready":
		_diag("grant_clear 非 Ready 相位")
		return null
	if _clear_granted:
		_diag("grant_clear 同批次重调（E18 幂等兜底）")
		return _clear_snapshot
	var row: Dictionary = _row_by_id(_clear_identity)
	_clear_snapshot = _snapshot(row, _clear_power)
	_clear_granted = true
	return _clear_snapshot


func retire_mapping() -> bool:
	if _phase != "ready":
		_diag("retire_mapping 非 Ready 相位（幂等受理族）")
		return false
	_phase = "retired"
	_mapping.clear()
	_power_roll.clear()
	_clear_power = -1
	_clear_identity = ""
	return true


# ---- 极性路由字典面（战斗结算 授予段消费）：（类型, 极性）→ 格面池字典行（拷贝出口）----

func polarity_row(cell_type: String, polarity: String) -> Dictionary:
	for row in db.reward.rows:
		if String(row.get("pool_tag", "")) == "cell" \
				and String(row.get("cell_type", "")) == cell_type \
				and String(row.get("polarity", "")) == polarity:
			return row.duplicate()   # E6：表行值拷贝出口——消费方禁改配置源
	_fatal("极性字典缺行（八型×正负齐备为加载前提）: %s %s" % [cell_type, polarity])
	return {}


# ---- F6 当量供给（行动经济 条款①对照实物输入——全活行投影 + tier_min_buff）----

func equivalence_supply() -> Dictionary:
	var live: Array[Dictionary] = []
	var tier_min_buff := 99
	for row in db.reward.rows:
		if int(row.weight) <= 0:
			continue
		live.append(row.duplicate())   # E6：表行值拷贝出口——消费方禁改配置源
		# tier_min_buff = 我侧增益（hero_offense/hero_defense 池的 percent 正向行——attack_up/defense_up）最低档
		if String(row.get("pool_tag", "")) == "cell" and String(row.get("polarity", "")) == "positive" \
				and String(row.get("effect_id", "")) != "":
			var eff_row: Dictionary = db.status_effect_row(String(row.effect_id))
			if not eff_row.is_empty() and String(eff_row.get("target_side", "")) == "hero":
				tier_min_buff = mini(tier_min_buff, int(row.tier))
	return {"live_rows": live, "tier_min_buff": tier_min_buff}


# ---- F1 选行算子纯函数 ----

func weighted_pick(rows: Array, r: int) -> String:
	var total := _pool_weight(rows)
	assert(r >= 0 and r < total, "weighted_pick 取号越域（纯函数域守卫）")
	var acc := 0
	for row in rows:
		acc += int(row.weight)
		if r < acc:
			return String(row.reward_id)
	_fatal("weighted_pick 未命中（不应可达）")
	return ""


# aux 解锁门控集（迭代 7 T5——拍板③甲「解锁→进投放池」：未解锁 aux 行不入摇号池。
# 空集默认 = 全部 aux 不投放（白板/夹具态零投放——模拟读数零扰动；真实侧 main 组装工坊解锁集传入）
var _aux_unlocked := {}


func set_aux_unlocked(ids: Dictionary) -> void:
	_aux_unlocked = ids


func _rollable_rows() -> Array:
	# 摇号池 = cell 池正向行 weight>0（负向行纯字典不消费权重；封锁格不在本函数职责域——清单由调用方裁剪）
	var out: Array[Dictionary] = []
	for row in db.reward.rows:
		if String(row.get("cell_type", "")) == RewardTable.AUX_ITEM_TYPE:
			var iid := String(row.get("effect_id", ""))
			if iid == "" or not _aux_unlocked.has(iid):
				continue
		if String(row.get("pool_tag", "")) == "cell" and String(row.get("polarity", "")) == "positive" and int(row.weight) > 0:
			out.append(row)
	return out


func _pool_rows(pool_tag: String) -> Array:
	var out: Array[Dictionary] = []
	for row in db.reward.rows:
		if row.pool_tag == pool_tag and int(row.weight) > 0:
			out.append(row)
	return out


func _pool_weight(rows: Array) -> int:
	var w := 0
	for row in rows:
		w += int(row.weight)
	return w


func _row_by_id(rid: String) -> Dictionary:
	for row in db.reward.rows:
		if row.reward_id == rid:
			return row
	return {}


func _snapshot(row: Dictionary, rolled_power: int = -1) -> Dictionary:
	var snap := {
		"reward_id": String(row.reward_id),
		"cell_type": String(row.cell_type),
		"display_name": String(row.display_name),
		"power": int(row.power) if rolled_power < 0 else rolled_power,   # 区间行 = 身份批 roll 值（E14 授予时快照口径）
		"tier": int(row.tier),
		"stacks": int(row.get("stacks", 1)),
	}
	if String(row.get("effect_id", "")) != "":
		snap["effect_id"] = String(row.effect_id)
	return snap


func _diag(msg: String) -> void:
	push_warning("[地图战斗资源] " + msg)


func _fatal(msg: String) -> void:
	push_error("[地图战斗资源/fatal] " + msg)
	assert(false, msg)