//
//  MineViewModel.swift
//  QuickLocation
//

import Foundation
import RxSwift
import RxDataSources

typealias MineListSectionModel = SectionModel<String, MineMenuItem>

class MineViewModel {

    struct Output {
        var sectionedItems: Observable<[MineListSectionModel]>
    }

    let output: Output

    private var disposeBag = DisposeBag()
    private let sectionedItems = PublishSubject<[MineListSectionModel]>()

    let userAvatar = PublishSubject<String>()
    let userName = PublishSubject<String>()
    let userID = PublishSubject<String>()

    /// 设置列表（设计稿）
    let menuItems: [MineMenuItem] = [
        MineMenuItem(icon: "Mine/account_security", title: "账户与安全"),
        MineMenuItem(icon: "Mine/emergency_contact", title: "紧急联系人"),
        MineMenuItem(icon: "Mine/customer_service", title: "在线客服"),
        MineMenuItem(icon: "Mine/menu_about", title: "关于我们")
    ]

    /// 快捷入口
    let quickItems: [MineMenuItem] = [
        MineMenuItem(icon: "Mine/quick_permission", title: "权限检测"),
        MineMenuItem(icon: "Mine/quick_data_security", title: "数据安全"),
        MineMenuItem(icon: "Mine/quick_status", title: "状态设置"),
        MineMenuItem(icon: "Mine/quick_privacy", title: "隐私设置")
    ]

    lazy var cellAction: Action<MineMenuItem, Void> = { this in
        return Action { model in
            this.handleMenu(model)
            return .empty()
        }
    }(self)

    func handleMenu(_ model: MineMenuItem) {
        switch model.title {
        case "账户与安全":
            AppRouter.push(Route.account)
        case "紧急联系人":
            AppRouter.push(Route.emergencyContact)
        case "隐私与协议", "隐私设置":
            AppRouter.push(Route.privacyPolicy)
        case "在线客服":
            requestWechatService()
        case "权限检测":
            AppRouter.push(Route.checkPermission)
        case "数据安全", "状态设置", "关于我们":
            DLToast.show(text: "敬请期待")
        default:
            break
        }
    }

    func loadMenuData() {
        sectionedItems.onNext(menuItems.mapSection())
    }

    /// 圈主 → 自己 → 在线（对齐首页）
    func sortedMembers(_ list: [GroupMemberModel], groupKey: String) -> [GroupMemberModel] {
        list.enumerated()
            .sorted { lhs, rhs in
                let lp = memberSortPriority(lhs.element, groupKey: groupKey)
                let rp = memberSortPriority(rhs.element, groupKey: groupKey)
                if lp != rp { return lp < rp }
                return lhs.offset < rhs.offset
            }
            .map(\.element)
    }

    private func memberSortPriority(_ member: GroupMemberModel, groupKey: String) -> Int {
        if !groupKey.isEmpty, groupKey.contains(member.user_id) { return 0 }
        if member.user_id == AppContextManager.shared.userId { return 1 }
        if member.is_online { return 2 }
        return 3
    }

    func requestWechatService() {
        DLToast.showLoading()
        SystemService.wechatService().subscribe(onNext: { response in
            DLToast.dismiss()
            guard let responseData = response.data,
                  let corpid = responseData["corpid"] as? String,
                  let url = responseData["kf.address"] as? String else { return }
            let req = WXOpenCustomerServiceReq()
            req.corpid = corpid
            req.url = url
            WXApi.send(req)
        }, onError: { _ in }).disposed(by: disposeBag)
    }

    init() {
        output = Output(
            sectionedItems: sectionedItems.asObservable()
        )
    }
}

struct MineMenuItem {
    let icon: String
    let title: String
}