class_name FriendVisitController
extends RefCounted

# 好友访问控制器。
#
# 参考原 H5：
# - 好友列表点击房屋/手指后触发 interaction/get-other-user-info。
# - 访问他人农场后的土地操作统一走 interaction/interaction。
# - interaction type 来自 common/utils/EnumUtil.php：
#   0 偷菜，1 放虫，2 放草，3 浇水，4 除虫，5 除草。
#
# 控制器只处理接口请求和业务回写，不持有场景节点。

const ACTION_STEAL := "steal"
const ACTION_PUT_BUG := "put_bug"
const ACTION_PUT_GRASS := "put_grass"
const ACTION_WATER := "water"
const ACTION_DIE_BUG := "die_bug"
const ACTION_DIE_GRASS := "die_grass"

const INTERACTION_TYPE_STEAL := 0
const INTERACTION_TYPE_BUG := 1
const INTERACTION_TYPE_GRASS := 2
const INTERACTION_TYPE_WATERING := 3
const INTERACTION_TYPE_DISINSECTION := 4
const INTERACTION_TYPE_WEEDING := 5

var _interaction_api
var _game_config
var _crop_phase_rules
var _callbacks: Dictionary = {}


func setup(options: Dictionary) -> void:
	_interaction_api = options.get("interaction_api")
	_game_config = options.get("game_config")
	_crop_phase_rules = options.get("crop_phase_rules")
	_callbacks = options.get("callbacks", {})


func visit_friend_home(row: Dictionary) -> void:
	var target_id := target_user_id(row)
	if target_id <= 0:
		_show_toast("好友数据异常")
		return
	if target_id == _player_id():
		_show_toast("这是你的农场，不用去啦！")
		return
	if _is_busy() or _interaction_api == null:
		return
	var token := _token()
	if token.is_empty():
		_show_toast("登录已失效")
		return

	_set_busy(true)
	var result: Dictionary = await _interaction_api.fetch_other_user_info(token, target_id)
	_set_busy(false)
	if not result.get("ok", false):
		_show_toast(_response_status_text(result, "访问好友失败"))
		return
	var data = _response_data(result, {})
	if not data is Dictionary:
		_show_toast("好友数据异常")
		return
	_call("enter_friend_farm", [data])


func interact_land(action: String) -> void:
	if not _is_visiting_friend() or _interaction_api == null:
		return
	var position := _selected_position()
	if position < 0 or _is_busy():
		return
	var interaction_type := _interaction_type(action)
	if interaction_type < 0:
		return
	var token := _token()
	var visited_friend_id := _visited_friend_id()
	if token.is_empty() or visited_friend_id <= 0:
		_show_toast("登录已失效")
		return

	var old_land := _land_data(position)
	_set_busy(true)
	var result: Dictionary = await _interaction_api.interact(token, visited_friend_id, position, interaction_type)
	_set_busy(false)
	if not result.get("ok", false):
		_show_toast(_response_status_text(result, "好友互动失败"))
		return

	var data = _response_data(result, {})
	var response_data: Dictionary = data if data is Dictionary else {}
	var land_data: Dictionary = old_land.duplicate(true)
	var returned_land = response_data.get("land", {})
	if returned_land is Dictionary:
		land_data = returned_land.duplicate(true)
	if not land_data.has("position"):
		land_data["position"] = position
	if not land_data.has("crop_phase") and _crop_phase_rules != null:
		land_data["crop_phase"] = _crop_phase_rules.get_phase(land_data)
	land_data["interaction_type_list"] = _remove_interaction_type(old_land.get("interaction_type_list", []), interaction_type)
	_call("apply_land_data", [land_data])
	_apply_interaction_reward(interaction_type, response_data, old_land)
	_call("hide_selection_ui")
	_call("render_lands")


func target_user_id(row: Dictionary) -> int:
	for key in ["uid", "user_id", "id"]:
		var value := int(row.get(key, 0))
		if value > 0:
			return value
	return 0


func _interaction_type(action: String) -> int:
	match action:
		ACTION_STEAL:
			return INTERACTION_TYPE_STEAL
		ACTION_PUT_BUG:
			return INTERACTION_TYPE_BUG
		ACTION_PUT_GRASS:
			return INTERACTION_TYPE_GRASS
		ACTION_WATER:
			return INTERACTION_TYPE_WATERING
		ACTION_DIE_BUG:
			return INTERACTION_TYPE_DISINSECTION
		ACTION_DIE_GRASS:
			return INTERACTION_TYPE_WEEDING
		_:
			return -1


func _remove_interaction_type(raw_types: Variant, interaction_type: int) -> Array[int]:
	var next_types: Array[int] = []
	if not raw_types is Array:
		return next_types
	for raw_type in raw_types:
		var type_id := int(raw_type)
		if type_id != interaction_type and not next_types.has(type_id):
			next_types.append(type_id)
	return next_types


func _apply_interaction_reward(interaction_type: int, response_data: Dictionary, old_land: Dictionary) -> void:
	match interaction_type:
		INTERACTION_TYPE_STEAL:
			_apply_steal_reward(response_data, old_land)
		INTERACTION_TYPE_BUG:
			_show_toast("放虫成功")
		INTERACTION_TYPE_GRASS:
			_show_toast("放草成功")
		INTERACTION_TYPE_WATERING:
			_show_toast("浇水成功")
		INTERACTION_TYPE_DISINSECTION:
			_show_toast("除虫成功")
		INTERACTION_TYPE_WEEDING:
			_show_toast("除草成功")


func _apply_steal_reward(response_data: Dictionary, old_land: Dictionary) -> void:
	var deduct_gold := int(response_data.get("deduct_gold", 0))
	if deduct_gold > 0:
		_call("decrease_player_currency", [deduct_gold, 0])
		_show_toast("偷菜不幸被狗狗发现，逃跑过程中遗落了%s金币" % deduct_gold)
		return
	var steal_count := int(response_data.get("steal_count", 0))
	var crop_id := int(old_land.get("crop_id", 0))
	if crop_id <= 0:
		var returned_land = response_data.get("land", {})
		if returned_land is Dictionary:
			crop_id = int(returned_land.get("crop_id", 0))
	var crop_name := "作物"
	var item_id := 0
	if _game_config != null:
		crop_name = _game_config.get_crop_name(crop_id)
		if _game_config.has_method("get_crop_output_item_id"):
			item_id = int(_game_config.get_crop_output_item_id(crop_id))
	if item_id > 0 and steal_count > 0:
		_call("add_reward_items", ["%s:%s" % [item_id, steal_count]])
	_show_toast("偷取%sx%s" % [crop_name, steal_count])


func _selected_position() -> int:
	return int(_call("selected_position", [], -1))


func _token() -> String:
	return str(_call("token", [], ""))


func _player_id() -> int:
	return int(_call("player_id", [], 0))


func _visited_friend_id() -> int:
	return int(_call("visited_friend_id", [], 0))


func _land_data(position: int) -> Dictionary:
	var result = _call("land_data", [position], {})
	return result if result is Dictionary else {}


func _is_visiting_friend() -> bool:
	return bool(_call("is_visiting_friend", [], false))


func _is_busy() -> bool:
	return bool(_call("is_operation_in_progress", [], false))


func _set_busy(value: bool) -> void:
	_call("set_operation_in_progress", [value])


func _response_data(result: Dictionary, fallback: Variant = {}) -> Variant:
	return _call("response_data", [result, fallback], fallback)


func _response_status_text(result: Dictionary, fallback := "操作失败") -> String:
	return str(_call("response_status_text", [result, fallback], fallback))


func _show_toast(message: String) -> void:
	_call("show_toast", [message])


func _call(name: String, args: Array = [], fallback: Variant = null) -> Variant:
	var callable: Callable = _callbacks.get(name, Callable())
	if not callable.is_valid():
		return fallback
	return callable.callv(args)