# intro_select_phase.gd —— 40250 3D 角色选择大厅系统 1:1
# 严格对照：
#   Client/Eternexus/root/introselect.py (SelectCharacterWindow)
#   ClientVS22/source/UserInterface/InstanceBaseMotion.cpp (MOTION_INTRO_SELECTED)
#   metin2/src/server/game/src/char.cpp
extends RefCounted

const SLOT_COUNT := 4                 # 官方 4 槽位
const SLOT_ROTATION := [135.0, 225.0, 315.0, 45.0] # 官方 4 槽位旋转视角 (度数)

const JOB_WARRIOR := 0
const JOB_ASSASSIN := 1
const JOB_SURA := 2
const JOB_SHAMAN := 3

const JOB_NAMES := {
	JOB_WARRIOR: "战士 (Warrior)",
	JOB_ASSASSIN: "刺客 (Assassin)",
	JOB_SURA: "修罗 (Sura)",
	JOB_SHAMAN: "萨满 (Shaman)",
}

# 4 个角色槽位存储 (slot 0..3 -> CharacterData or null)
var character_slots: Array = [null, null, null, null]
var selected_slot_index: int = 0
var is_character_stepped_forward: bool = false

func _init() -> void:
	character_slots = [null, null, null, null]
	selected_slot_index = 0
	is_character_stepped_forward = false

# 1. 注册/载入角色槽位数据
func set_character_slot(slot_idx: int, char_data: Dictionary) -> bool:
	if slot_idx < 0 or slot_idx >= SLOT_COUNT:
		return false
	character_slots[slot_idx] = char_data.duplicate(true)
	return true

# 2. 选中角色槽位与踏步迈出动画 (1:1 SelectCharacterWindow.SelectSlot)
func select_slot(slot_idx: int) -> Dictionary:
	var res := {
		"success": false,
		"slot_idx": slot_idx,
		"is_empty_slot": true,
		"character": null,
		"rotation_deg": 0.0,
		"action": ""
	}

	if slot_idx < 0 or slot_idx >= SLOT_COUNT:
		return res

	selected_slot_index = slot_idx
	res["rotation_deg"] = SLOT_ROTATION[slot_idx]

	if character_slots[slot_idx] == null:
		is_character_stepped_forward = false
		res["is_empty_slot"] = true
		res["action"] = "PROMPT_CREATE"
	else:
		is_character_stepped_forward = true # 触发 MOTION_INTRO_SELECTED 迈步出列动画
		res["is_empty_slot"] = false
		res["character"] = character_slots[slot_idx]
		res["action"] = "READY_TO_START"

	res["success"] = true
	return res

# 3. 开始游戏进入世界 (1:1 SelectCharacterWindow.StartGame)
func start_game() -> Dictionary:
	var res := { "success": false, "character": null, "error_code": "OK", "message": "" }

	if character_slots[selected_slot_index] == null:
		res["error_code"] = "EMPTY_SLOT"
		res["message"] = "当前选中槽位为空，无法开始游戏。"
		return res

	res["success"] = true
	res["character"] = character_slots[selected_slot_index]
	res["message"] = "进入游戏世界..."
	return res

# 4. 删除角色与 7 位安全防删 PIN 码校验 (1:1 SelectCharacterWindow.DeleteCharacter)
func delete_character(slot_idx: int, delete_pin_code: String) -> Dictionary:
	var res := { "success": false, "error_code": "OK", "message": "" }

	if slot_idx < 0 or slot_idx >= SLOT_COUNT or character_slots[slot_idx] == null:
		res["error_code"] = "CHARACTER_NOT_FOUND"
		res["message"] = "未找到待删除的角色。"
		return res

	# 官方安全码格式验证 (必须为 7 位字符)
	if delete_pin_code.length() != 7:
		res["error_code"] = "INVALID_PIN_LENGTH"
		res["message"] = "防误删安全码必须为 7 位数字。"
		return res

	var target_char: Dictionary = character_slots[slot_idx]
	var expected_pin: String = str(target_char.get("delete_code", "1234567"))

	if delete_pin_code != expected_pin:
		res["error_code"] = "WRONG_DELETE_PIN"
		res["message"] = "安全码校验失败，删除角色请求被拒绝。"
		return res

	# 删除成功
	var char_name: String = target_char.get("name", "Unknown")
	character_slots[slot_idx] = null
	if selected_slot_index == slot_idx:
		is_character_stepped_forward = false

	res["success"] = true
	res["message"] = "角色 %s 已永久删除。" % char_name
	return res

# 5. 获取当前选中槽位的角色卡片详情
func get_selected_character_card() -> Dictionary:
	if character_slots[selected_slot_index] == null:
		return {}
	var c: Dictionary = character_slots[selected_slot_index]
	var job_idx: int = c.get("job", 0)
	return {
		"name": c.get("name", ""),
		"level": c.get("level", 1),
		"job_name": JOB_NAMES.get(job_idx, "未知职业"),
		"horse_level": c.get("horse_level", 0),
		"playtime_min": c.get("playtime_min", 0),
		"stats": c.get("stats", { "con": 4, "int": 3, "str": 6, "dex": 3 })
	}