# biologist_quest_system.gd —— Metin2 40250 生物学研究家任务链与永久属性加成系统 1:1
# 对照 40250 服务端 collect_quest_lv30.quest ~ collect_quest_lv80.quest 及 char.cpp:ComputePoints
class_name BiologistQuestSystem
extends RefCounted

const NPC_CHAEGIRAB := 20084
const ITEM_SPIRAL_POTION := 71035 # 灵魂秘药 / 研究家的秘药

const STAGES: Array[Dictionary] = [
	{
		"id": 0,
		"name": "Lv30 兽人的牙齿研究",
		"required_level": 30,
		"collect_vnum": 30006, # 兽人齿
		"collect_name": "兽人齿",
		"collect_count": 10,
		"soul_stone_vnum": 30220, # 兽人灵魂石
		"soul_stone_name": "金龙之灵魂石",
		"reward_type": "move_speed",
		"reward_value": 10,
		"reward_title": "永久移动速度 +10"
	},
	{
		"id": 1,
		"name": "Lv40 诅咒之书研究",
		"required_level": 40,
		"collect_vnum": 30047, # 诅咒书
		"collect_name": "诅咒之书",
		"collect_count": 15,
		"soul_stone_vnum": 30221, # 诅咒灵魂石
		"soul_stone_name": "神殿之灵魂石",
		"reward_type": "att_speed",
		"reward_value": 5,
		"reward_title": "永久攻击速度 +5"
	},
	{
		"id": 2,
		"name": "Lv50 恶魔纪念物研究",
		"required_level": 50,
		"collect_vnum": 30015, # 恶魔纪念物
		"collect_name": "恶魔纪念物",
		"collect_count": 15,
		"soul_stone_vnum": 30222, # 恶魔灵魂石
		"soul_stone_name": "恶魔之灵魂石",
		"reward_type": "def_grade",
		"reward_value": 60,
		"reward_title": "永久防御力 +60"
	},
	{
		"id": 3,
		"name": "Lv60 冰球研究",
		"required_level": 60,
		"collect_vnum": 30050, # 冰球
		"collect_name": "冰球",
		"collect_count": 20,
		"soul_stone_vnum": 30223, # 冰球灵魂石
		"soul_stone_name": "雪山之灵魂石",
		"reward_type": "att_grade",
		"reward_value": 50,
		"reward_title": "永久攻击力 +50"
	},
	{
		"id": 4,
		"name": "Lv70 幽灵树枝研究",
		"required_level": 70,
		"collect_vnum": 30165, # 幽灵树枝
		"collect_name": "幽灵树枝",
		"collect_count": 25,
		"soul_stone_vnum": 30224, # 幽灵灵魂石
		"soul_stone_name": "鬼树之灵魂石",
		"reward_type": "damage_reduction",
		"reward_value": 10,
		"reward_title": "受到伤害永久减少 10%"
	},
	{
		"id": 5,
		"name": "Lv80 图基石板研究",
		"required_level": 80,
		"collect_vnum": 30166, # 图基石板
		"collect_name": "图基石板",
		"collect_count": 30,
		"soul_stone_vnum": 30225, # 图基灵魂石
		"soul_stone_name": "图基之灵魂石",
		"reward_type": "att_grade_pct",
		"reward_value": 10,
		"reward_title": "物理攻击力永久提升 10%"
	}
]

var player_level: int = 1
var current_stage_idx: int = -1 # -1: 未开始
var delivered_count: int = 0
var soul_stone_phase: bool = false
var completed_stages: Array[int] = []
var cooldown_remaining: float = 0.0

var permanent_bonuses: Dictionary = {
	"move_speed": 0,
	"att_speed": 0,
	"def_grade": 0,
	"att_grade": 0,
	"damage_reduction": 0,
	"att_grade_pct": 0
}

func init_for_player(level: int) -> void:
	player_level = level
	_check_available_stage()

func _check_available_stage() -> void:
	if current_stage_idx >= 0 and current_stage_idx < STAGES.size():
		return # 正在进行中
	
	for i in range(STAGES.size()):
		if i not in completed_stages:
			var stage: Dictionary = STAGES[i]
			if player_level >= int(stage["required_level"]):
				current_stage_idx = i
				delivered_count = 0
				soul_stone_phase = false
				break

func get_current_stage() -> Dictionary:
	if current_stage_idx >= 0 and current_stage_idx < STAGES.size():
		return STAGES[current_stage_idx]
	return {}

func can_submit() -> bool:
	return current_stage_idx >= 0 and not soul_stone_phase and cooldown_remaining <= 0.0

func submit_item(inventory: Array, use_potion: bool = false, force_success: bool = false) -> Dictionary:
	if current_stage_idx < 0 or current_stage_idx >= STAGES.size():
		return {"ok": false, "reason": "NO_ACTIVE_QUEST"}
	if soul_stone_phase:
		return {"ok": false, "reason": "NEED_SOUL_STONE"}
	if cooldown_remaining > 0.0 and not use_potion:
		return {"ok": false, "reason": "COOLDOWN_ACTIVE", "remaining": cooldown_remaining}

	var stage: Dictionary = STAGES[current_stage_idx]
	var req_vnum: int = int(stage["collect_vnum"])
	
	# 查找收集物槽位
	var item_slot := -1
	for i in range(inventory.size()):
		var it = inventory[i]
		if it != null and int(it.get("vnum", 0)) == req_vnum:
			item_slot = i
			break
			
	if item_slot == -1:
		return {"ok": false, "reason": "MISSING_ITEM", "vnum": req_vnum}

	# 检查秘药
	var potion_consumed := false
	if use_potion:
		for i in range(inventory.size()):
			var it = inventory[i]
			if it != null and int(it.get("vnum", 0)) == ITEM_SPIRAL_POTION:
				inventory[i] = null
				potion_consumed = true
				cooldown_remaining = 0.0
				break

	# 扣除收集物
	inventory[item_slot] = null

	# 成功判定 (默认 60%，秘药 90%)
	var success_chance: float = 0.90 if potion_consumed else 0.60
	var roll: float = 0.0 if force_success else randf()
	var success := roll < success_chance

	if not success:
		cooldown_remaining = 0.0 if potion_consumed else 3600.0 # 1 小时
		return {
			"ok": true,
			"success": false,
			"delivered": delivered_count,
			"target": stage["collect_count"],
			"msg": "样本已损坏，未能提取有效数据！"
		}

	# 成功交付
	delivered_count += 1
	var target_count: int = int(stage["collect_count"])
	if delivered_count >= target_count:
		soul_stone_phase = true
		return {
			"ok": true,
			"success": true,
			"delivered": delivered_count,
			"target": target_count,
			"stage_completed": true,
			"msg": "研究样本收集完毕！接下来请获取专属灵魂石交付！"
		}
	else:
		cooldown_remaining = 0.0 if potion_consumed else 3600.0
		return {
			"ok": true,
			"success": true,
			"delivered": delivered_count,
			"target": target_count,
			"stage_completed": false,
			"msg": "样本质量极佳！已记录样本数据。"
		}

func submit_soul_stone(inventory: Array) -> Dictionary:
	if current_stage_idx < 0 or current_stage_idx >= STAGES.size():
		return {"ok": false, "reason": "NO_ACTIVE_QUEST"}
	if not soul_stone_phase:
		return {"ok": false, "reason": "NOT_IN_SOUL_STONE_PHASE"}

	var stage: Dictionary = STAGES[current_stage_idx]
	var soul_vnum: int = int(stage["soul_stone_vnum"])

	var found_slot := -1
	for i in range(inventory.size()):
		var it = inventory[i]
		if it != null and int(it.get("vnum", 0)) == soul_vnum:
			found_slot = i
			break

	if found_slot == -1:
		return {"ok": false, "reason": "MISSING_SOUL_STONE", "vnum": soul_vnum}

	# 消耗灵魂石
	inventory[found_slot] = null

	# 结算阶段奖励
	var reward_type: String = String(stage["reward_type"])
	var reward_val: int = int(stage["reward_value"])
	permanent_bonuses[reward_type] = int(permanent_bonuses.get(reward_type, 0)) + reward_val
	completed_stages.append(current_stage_idx)

	var finished_stage_id: int = current_stage_idx
	current_stage_idx = -1
	delivered_count = 0
	soul_stone_phase = false
	cooldown_remaining = 0.0

	# 检查下一阶段
	_check_available_stage()

	return {
		"ok": true,
		"completed_stage": finished_stage_id,
		"reward_title": stage["reward_title"],
		"reward_type": reward_type,
		"reward_value": reward_val,
		"all_bonuses": permanent_bonuses.duplicate()
	}

func get_quest_status() -> Dictionary:
	return {
		"player_level": player_level,
		"stage_idx": current_stage_idx,
		"stage_info": get_current_stage(),
		"delivered": delivered_count,
		"target": int(get_current_stage().get("collect_count", 0)),
		"soul_stone_phase": soul_stone_phase,
		"cooldown_remaining": cooldown_remaining,
		"completed_stages": completed_stages,
		"permanent_bonuses": permanent_bonuses
	}