//
//  GroupMemberViewModel.swift
//  PaiaiDataKit
//
//  Created by FFIB on 2017/5/8.
//  Copyright © 2017年 FFIB. All rights reserved.
//

import Foundation
import RxSwift
import RxCocoa
import RxDataSources

public class GroupMemberViewModel {

    private var repository: PhotoGroupDetailRepository
    private var items: BehaviorRelay<[GroupMemberItem]>

    private var disposeBag = DisposeBag()

    public var isAdmin: Bool

    public var contents: Observable<[AnimatableSectionModel<Int, GroupMemberItem>]> {
        return items.map({ model in
            return [AnimatableSectionModel(model: 0, items: model)]
        })
    }

    public init(item: GroupDetailItem) {
        self.repository = PhotoGroupDetailRepository(groupId: item.group_id)
        self.items = BehaviorRelay<[GroupMemberItem]>(value: item.users)
        self.isAdmin = item.group.admin_id == ShareUserId
    }

    public func removeMember(_ item: GroupMemberItem) {
        Toast.showActivity(message: "正在删除群成员")
        repository.removeMember(userId: item.user_id)
            .subscribe(onCompleted: {[unowned self] in
                Toast.showActivity(message: "群成员已删除")
                var content = self.items.value
                content.removeAll(where: { $0.user_id == item.user_id })
                self.items.accept(content)
        }).disposed(by: disposeBag)
    }
}