//
//  HomeViewModel.swift
//  QuickLocation
//
//  Created by 八条 on 2026/5/30.
//

import RxSwift
import RxDataSources
import ObjectMapper

typealias GroupMemberListSectionModel = SectionModel<String, GroupMemberModel>

class HomeViewModel {
    
    struct Output {
        var sectionedItems: Observable<[GroupMemberListSectionModel]>
    }
    
    let output: Output
    
    private var disposeBag = DisposeBag()
    private let sectionedItems = PublishSubject<[GroupMemberListSectionModel]>()
    
    lazy var cellAction: Action<GroupMemberModel, Void> = { this in
        return Action { model in
            
            return .empty()
        }
    }(self)
    
    var groupModel: GroupModel? {
        didSet {
            guard let model = groupModel else { return }
            self.memberList = model.select_group_employee
        }
    }
    
    // 当前选中的圈子
    var groupInfo: [String: Any] {
        get {
            guard let model = groupModel,
                  let groupInfoModel = model.groups.first(where: { $0.group_key == model.default_group_key }) else { return [:] }
            return groupInfoModel.toJSON()
        }
    }
    
    // 圈子名字
    var groupName: String {
        get {
            guard let model = groupModel else { return "我的圈子" }
            return model.groups.first(where: { $0.group_key == model.default_group_key })?.name ?? ""
        }
    }
    
    // 圈子成员数
    var memberCount: Int {
        get {
            guard let model = groupModel else { return 0 }
            return model.select_group_employee.count
        }
    }
    
    // 圈子成员在线数
    var memberOnlineCount: Int {
        get {
            guard let model = groupModel else { return 0 }
            return model.select_group_employee.filter { $0.is_online == true}.count
        }
    }
    
    // 是否当前用户
    func isCurrentUser(id: String) -> Bool {
        id == AppContextManager.shared.userId
    }
    
    // 是否圈主
    func isGroupOwn(id: String) -> Bool {
        guard let model = groupModel else { return false }
        return model.default_group_key.contains(id)
    }
    
    var memberList: [GroupMemberModel] = [] {
        didSet {
            var tempList = memberList
            
            // 当前用户的电量
//            if var model = memberList.first(where: { $0.user_id == AppContextManager.shared.userId }),
//               let idx = memberList.firstIndex(where: { $0.user_id == AppContextManager.shared.userId }) {
//                let battery = UIDevice.current.batteryLevel > 0
//                    ? Int(UIDevice.current.batteryLevel * 100)
//                    : 0
//                model.battery = battery.string
//                model.is_online = true
//                tempList[idx] = model
//            }
            
            tempList.moveToFirst { $0.user_id == AppContextManager.shared.userId }
            tempList.moveToFirst { isGroupOwn(id: $0.user_id) }
            memberList = tempList
            sectionedItems.onNext(memberList.mapSection())
        }
    }
    
    /// MQTT 位置更新后刷新成员的地址、电量、在线状态
    func updateMemberLocation(userId: String, lat: Double, lon: Double, address: String, battery: String, isOnline: Bool, lastUpdateText: String) {
        guard let idx = memberList.firstIndex(where: { $0.user_id == userId }) else { return }
        var updated = memberList
        updated[idx].last_position = "\(lat):\(lon):\(address)"
        updated[idx].battery = battery
        updated[idx].is_online = isOnline
        updated[idx].lastUpdateText = lastUpdateText
        memberList = updated  // 触发 didSet → 排序 + 重发 sectionedItems
    }

    // MARK: - Init
    init() {
        output = Output(
            sectionedItems: sectionedItems.asObservable()
        )
    }
}