//
//  GroupViewModel.swift
//  QuickLocation
//

import Foundation
import RxSwift
import RxCocoa
import RxDataSources

typealias CircleListSectionModel = SectionModel<String, CircleGroupItem>

// MARK: - Models

/// 热门酷圈
struct HotGroupItem {
    let id: String
    let name: String
    let icon: String
    let memberCount: Int
    let onlineCount: Int
}

/// 圈子
struct CircleGroupItem {
    let id: String
    let name: String
    let icon: String
    let memberCount: Int
    let onlineCount: Int
    let address: String
}

// MARK: - ViewModel

final class GroupViewModel {

    struct Output {
        let hotGroups: Driver<[HotGroupItem]>
        let createdSections: Observable<[CircleListSectionModel]>
        let joinedSections: Observable<[CircleListSectionModel]>
        let segmentTitles: Driver<[String]>
    }

    let output: Output

    private let hotGroupsSubject = BehaviorRelay<[HotGroupItem]>(value: [])
    private let createdSectionsSubject = PublishSubject<[CircleListSectionModel]>()
    private let joinedSectionsSubject = PublishSubject<[CircleListSectionModel]>()

    let segmentTitles = BehaviorRelay<[String]>(value: ["我创建的圈子", "我加入的圈子"])

    // MARK: - Init
    init() {
        output = Output(
            hotGroups: hotGroupsSubject.asDriver(),
            createdSections: createdSectionsSubject.asObservable(),
            joinedSections: joinedSectionsSubject.asObservable(),
            segmentTitles: segmentTitles.asDriver()
        )
    }

    func loadMockData() {
        hotGroupsSubject.accept([
            HotGroupItem(id: "h1", name: "户外探险队", icon: "map_avatar_1", memberCount: 128, onlineCount: 32),
            HotGroupItem(id: "h2", name: "城市慢跑团", icon: "map_avatar_2", memberCount: 256, onlineCount: 45),
            HotGroupItem(id: "h3", name: "骑行爱好者", icon: "map_avatar_3", memberCount: 89, onlineCount: 12),
            HotGroupItem(id: "h4", name: "登山俱乐部", icon: "map_avatar_4", memberCount: 342, onlineCount: 67),
            HotGroupItem(id: "h5", name: "摄影交流圈", icon: "map_avatar_5", memberCount: 156, onlineCount: 28)
        ])

        let createdItems = [
            CircleGroupItem(id: "c1", name: "户外探险队", icon: "map_avatar_1", memberCount: 128, onlineCount: 32, address: "重庆市渝北区"),
            CircleGroupItem(id: "c2", name: "周末徒步小组", icon: "map_avatar_2", memberCount: 45, onlineCount: 8, address: "重庆市江北区"),
            CircleGroupItem(id: "c3", name: "夜跑小分队", icon: "map_avatar_3", memberCount: 67, onlineCount: 15, address: "重庆市南岸区"),
            CircleGroupItem(id: "c4", name: "钓鱼爱好者", icon: "map_avatar_4", memberCount: 32, onlineCount: 6, address: "重庆市北碚区"),
            CircleGroupItem(id: "c5", name: "美食探店团", icon: "map_avatar_5", memberCount: 89, onlineCount: 23, address: "重庆市渝中区"),
            CircleGroupItem(id: "c6", name: "桌游俱乐部", icon: "map_avatar_1", memberCount: 56, onlineCount: 18, address: "重庆市沙坪坝区"),
            CircleGroupItem(id: "c7", name: "电影交流群", icon: "map_avatar_2", memberCount: 112, onlineCount: 34, address: "重庆市九龙坡区")
        ]
        createdSectionsSubject.onNext([SectionModel(model: "created", items: createdItems)])

        let joinedItems = [
            CircleGroupItem(id: "j1", name: "城市慢跑团", icon: "map_avatar_2", memberCount: 256, onlineCount: 45, address: "重庆市两江新区"),
            CircleGroupItem(id: "j2", name: "骑行爱好者", icon: "map_avatar_3", memberCount: 89, onlineCount: 12, address: "重庆市沙坪坝区"),
            CircleGroupItem(id: "j3", name: "登山俱乐部", icon: "map_avatar_4", memberCount: 342, onlineCount: 67, address: "重庆市九龙坡区"),
            CircleGroupItem(id: "j4", name: "摄影交流圈", icon: "map_avatar_5", memberCount: 156, onlineCount: 28, address: "重庆市大渡口区"),
            CircleGroupItem(id: "j5", name: "羽毛球爱好者", icon: "map_avatar_1", memberCount: 98, onlineCount: 22, address: "重庆市巴南区"),
            CircleGroupItem(id: "j6", name: "宠物家长群", icon: "map_avatar_2", memberCount: 67, onlineCount: 15, address: "重庆市渝北区"),
            CircleGroupItem(id: "j7", name: "读书分享会", icon: "map_avatar_3", memberCount: 45, onlineCount: 11, address: "重庆市江北区"),
            CircleGroupItem(id: "j8", name: "电竞战队", icon: "map_avatar_4", memberCount: 134, onlineCount: 42, address: "重庆市南岸区"),
            CircleGroupItem(id: "j9", name: "手工DIY圈", icon: "map_avatar_5", memberCount: 78, onlineCount: 19, address: "重庆市渝中区"),
            CircleGroupItem(id: "j10", name: "瑜伽冥想群", icon: "map_avatar_1", memberCount: 56, onlineCount: 24, address: "重庆市巴南区")
        ]
        joinedSectionsSubject.onNext([SectionModel(model: "joined", items: joinedItems)])
    }
}