# 初始版本不提供添加弟子的接口


class_name DiscipleManager
extends Node

signal disciple_added(disciple: Disciple)
signal disciple_removed(disciple: Disciple)
signal disciple_attr_changed(disciple: Disciple, attr_name: String, old_value: Variant, new_value: Variant)

## 开局随机编队（一次性随机生成的数据，非程序化 RNG；占位，可手调）
## 字段与 Disciple.create() 构造键一致；realm_level 用 int（0凡人/1练气，=Disciple.Realm 枚举值）
const INITIAL_ROSTER := [
	# 1 玄真（宗主）：修士·炼气9层，五行全高，炼丹3级
	{
		"name": "玄真",
		"metal": 45, "wood": 38, "water": 22, "fire": 31, "earth": 19,
		"efficiency": 85,
		"realm_level": 1, "sub_realm_level": 9,
		"farming_level": 1, "herb_level": 2, "alchemy_level": 3,
		"loyalty": 90,
	},
	# 2 凌霄：修士·炼气4层，金火旺
	{
		"name": "凌霄",
		"metal": 62, "wood": 12, "water": 15, "fire": 44, "earth": 20,
		"efficiency": 76,
		"realm_level": 1, "sub_realm_level": 4,
		"farming_level": 2, "herb_level": 1, "alchemy_level": 1,
		"loyalty": 55,
	},
	# 3 青禾：凡人带灵根（木47≥20 可修炼破境），药草天赋
	{
		"name": "青禾",
		"metal": 8, "wood": 47, "water": 25, "fire": 12, "earth": 10,
		"efficiency": 68,
		"realm_level": 0, "sub_realm_level": 1,
		"farming_level": 2, "herb_level": 3, "alchemy_level": 0,
		"loyalty": 60,
	},
	# 4 阿福：凡人杂役（无灵根，五行均<20）
	{
		"name": "阿福",
		"metal": 5, "wood": 12, "water": 8, "fire": 9, "earth": 10,
		"efficiency": 41,
		"realm_level": 0, "sub_realm_level": 1,
		"farming_level": 2, "herb_level": 1, "alchemy_level": 0,
		"loyalty": 50,
	},
	# 5 阿禄：凡人杂役（无灵根）
	{
		"name": "阿禄",
		"metal": 3, "wood": 6, "water": 5, "fire": 8, "earth": 15,
		"efficiency": 35,
		"realm_level": 0, "sub_realm_level": 1,
		"farming_level": 3, "herb_level": 1, "alchemy_level": 0,
		"loyalty": 45,
	},
]

var _disciples: Array[Disciple] = []    # 弟子列表
var _master_id: int = 0                 # 管理器的发号计数，id 的唯一来源

# ---- 工厂 ----

# 初始编队（复用 _create_from_data）
func spawn_initial_roster() -> Array[Disciple]:
    for data in INITIAL_ROSTER:
        var disciple = _create_from_data(data)
        if disciple != null:
            add_disciple(disciple)
            # _disciples.append(disciple)
            # emit_signal("disciple_added", disciple)
        else:
            push_error("Failed to spawn disciple from data: %s" % data)
    pass

# 补 id → Disciple.create()
# 从数据字典创建 Disciple 实例，若失败返回 null
func _create_from_data(data: Dictionary) -> Disciple:
    var disciple := Disciple.create(data)
    if disciple == null:
        push_error("Failed to create disciple from data: %s" % data)
        return null
    disciple.id = _master_id
    _master_id += 1
    return disciple
    pass

# ---- 仓储 ----

# 公开接口：添加弟子
func add_disciple(d : Disciple) -> void:
    if d == null:
        push_error("Cannot add null disciple.")
        return
    _disciples.append(d)
    emit_signal("disciple_added", d)

# 移除弟子
func remove_disciple(d : Disciple) -> bool:
    if d != null and _disciples.has(d):
        _disciples.erase(d)
        emit_signal("disciple_removed", d)
        return true
    return false

# 公开接口：通过id获取弟子
func get_disciple(id : int) -> Disciple:
    for d in _disciples:
        if d.id == id:
            return d
    return null

# 公开接口：获取所有弟子（返回副本，避免外部修改原数组）
func get_all() -> Array[Disciple]:
    return _disciples.duplicate()  # 返回副本，避免外部修改原数组

# ---- 修改唯一入口 ----

# 调 d.set_attr + 发信号（name 特判）
func set_attr(d :Disciple, attr: String, value: Variant) -> bool:
    if _disciples.has(d):
        var old_value = d.get_attr(attr)
        if d.set_attr(attr, value):
            emit_signal("disciple_attr_changed", d, attr, old_value, value)
            return true
    return false

# ---- 经验晋级（领域操作）----

# 跨小境界继承循环；跨大境界清零；满级不涨；无灵根拒绝
func add_cultivation_exp(d : Disciple, amount : int) -> void:
    if _disciples.has(d):
        var old_realm = d.realm_level
        var old_sub_realm = d.sub_realm_level
        d.add_cultivation_exp(amount)
        if d.realm_level != old_realm or d.sub_realm_level != old_sub_realm:
            emit_signal("disciple_attr_changed", d, "realm_level", old_realm, d.realm_level)
            emit_signal("disciple_attr_changed", d, "sub_realm_level", old_sub_realm, d.sub_realm_level)

# skill∈{farming,herb,alchemy}，查 SKILL_EXP_CAPS，溢出继承至满级
func add_skill_exp(d : Disciple, skill: String, amount : int) -> void:
    if _disciples.has(d):
        var old_level = d.get_skill_level(skill)
        d.add_skill_exp(skill, amount)
        var new_level = d.get_skill_level(skill)
        if new_level != old_level:
            emit_signal("disciple_attr_changed", d, skill + "_level", old_level, new_level)

# ---- 月度结算（预留）----
# 月收益 = f(efficiency)，依赖经济扣灵石 —— 取决于下列问题
func settle_month() -> void:
    pass

# ---- 存档 ----
func to_dict():
    pass

func load_from_dict():
    pass