//
//  MapViewModel.swift
//  QuickLocation
//

import Foundation
import RxSwift
import RxCocoa
import CoreLocation

final class MapViewModel {

    struct Output {
        var members: Observable<[CircleMember]>
        var trackingMode: Observable<Bool>
    }

    let output: Output

    private let membersRelay = BehaviorRelay<[CircleMember]>(value: [])
    private let trackingRelay = BehaviorRelay<Bool>(value: true)
    let selectedMember = PublishSubject<CircleMember>()

    init() {
        output = Output(
            members: membersRelay.asObservable(),
            trackingMode: trackingRelay.asObservable()
        )
    }

    func loadMembers() {
        membersRelay.accept(.mock)
    }

    func toggleTracking() {
        trackingRelay.accept(!trackingRelay.value)
    }

    func selectMember(_ member: CircleMember) {
        selectedMember.onNext(member)
    }

    func currentUser() -> CircleMember? {
        membersRelay.value.first { $0.isCurrentUser }
    }

    #if !targetEnvironment(simulator)
    func memberAnnotations() -> [MemberAnnotation] {
        membersRelay.value.map { MemberAnnotation(member: $0) }
    }
    #endif
}