//
//  ScheduleViewModel.swift
//  QuickLocation
//
//  Created by 八条 on 2026/6/23.
//

import RxSwift
import RxCocoa
import RxDataSources
import MJRefresh
import ObjectMapper

typealias ViewedListSectionModel = SectionModel<String, ViewedModel>
typealias ScheduleListSectionModel = AnimatableSectionModel<String, ScheduleModel>

class ScheduleViewModel: ViewModelType {
    
    struct Input {}
    
    struct Output {
        var sectionedItems: Observable<[ViewedListSectionModel]>
        var scheduleSectionedItems: Observable<[ScheduleListSectionModel]>
        var refreshResult: Observable<RefreshResult>
        var pagination: Observable<PaginationModel?>
        var error: Observable<Error>
    }
    
    let input: Input
    let output: Output
    
    private var listService: ListService<ScheduleListResponse>
    private let sectionedItems = PublishSubject<[ViewedListSectionModel]>()
    private let scheduleSectionedItems = PublishSubject<[ScheduleListSectionModel]>()
    
    var refresh: MJRefreshComponentAction {
        return {
            self.listService.request.onNext(.refresh)
        }
    }
    var loadMore: MJRefreshComponentAction {
        return {
            self.listService.request.onNext(.more)
        }
    }
    
    func loadViewedData(_ list: [ViewedModel]) {
        sectionedItems.onNext(list.mapSection())
    }
    
    lazy var viewedCellAction: Action<ViewedModel, Void> = { this in
        return Action { model in
            AppRouter.push(Route.scheduleViewed)
            return .empty()
        }
    }(self)
    
    lazy var cellAction: Action<ScheduleModel, Void> = { this in
        return Action { model in
            AppRouter.push(Route.scheduleDetail, userInfo: ["scheduleJson": model.toJSON()])
            return .empty()
        }
    }(self)
    
    /// 切换条件
    /// - Parameters:
    ///     - follow: 只查看关注的行程
    ///     - own: 只查看自己创建的行程
    ///     - history: true查看历史行程，默认查看今天之后的行程
    ///     - group_key: 过滤圈子查询
    func changeCondition(follow: Bool, own: Bool) {
        listService.targetTransform = { page in
            ItineraryAPI.query(follow: follow, own: own, history: false, group_key: "", page: page).multiTarget
        }
    }
    
    // MARK: - init
    init() {
        listService = ItineraryService.query()
        
        input = Input()
        output = Output(
            sectionedItems: sectionedItems.asObservable(),
            scheduleSectionedItems: listService.animatableSectionedItems,
            refreshResult: listService.refreshResult,
            pagination: listService.pagination,
            error: listService.error
        )
    }
}