//
//  SportDetailViewModels.swift
//  Lookfit
//
//  Created by lemo. on 2020/4/13.
//  Copyright © 2020 Sheldon. All rights reserved.
//

import UIKit
import RxSwift
import CoreLocation

class SportDetailViewModels: ViewModel, ViewModelType {

    struct Input {
    }
    
    struct Output {
        let items: BehaviorRelay<[SectionModel<String, SportDetailCellViewModels>]>
        let sportName: Driver<String>
        let time: Driver<String>
        let distance: Driver<String>
        let distanceUnit: Driver<String>
        let trajectory: Driver<(Bool, [CLLocationCoordinate2D])>
    }
    
    func transform(input: SportDetailViewModels.Input) -> SportDetailViewModels.Output {
        let items = BehaviorRelay<[SectionModel<String, SportDetailCellViewModels>]>(value: [])
        var dataSource: [SportDetailCellViewModels] = []
        let cellViewModel1 = SportDetailCellViewModels(title: MultiLanguageKey.sportDuration.localized, img: R.image.icon_sporttime(), value: sportModel.durationStr, unit: nil)
        let cellViewModel2 = SportDetailCellViewModels(title: MultiLanguageKey.consume.localized, img: R.image.icon_calories(), value: String(sportModel.calorie), unit: "kCal", rightLineHidden: true)
        let cellViewModel3 = SportDetailCellViewModels(title: MultiLanguageKey.paceAvg.localized, img: R.image.icon_pace(), value: sportModel.avgPaceStr, unit: nil)
        let cellViewModel4 = SportDetailCellViewModels(title: MultiLanguageKey.speedAvg.localized, img: R.image.icon_speed(), value: sportModel.avgSpeedStr, unit: "km/h", rightLineHidden: true)
        let cellViewModel5 = SportDetailCellViewModels(title: MultiLanguageKey.strideAvg.localized, img: R.image.icon_stride(), value: String(sportModel.stepFrequency), unit: MultiLanguageKey.strideTip.localized)
        let cellViewModel6 = SportDetailCellViewModels(title: MultiLanguageKey.cadenceAvg.localized, img: R.image.icon_cadence(), value: String(sportModel.stride), unit: MultiLanguageKey.cm.localized, rightLineHidden: true)
        let cellViewModel7 = SportDetailCellViewModels(title: MultiLanguageKey.stepNumber.localized, img: R.image.icon_stepNumber(), value: String(sportModel.stepNumber), unit: MultiLanguageKey.stepTip.localized)
        let cellViewModel8 = SportDetailCellViewModels(title: MultiLanguageKey.avgHr.localized, img: R.image.icon_heartRate(), value: String(sportModel.heartAvg), unit: "bpm", rightLineHidden: true)
        dataSource.append(cellViewModel1)
        dataSource.append(cellViewModel2)
        dataSource.append(cellViewModel3)
        dataSource.append(cellViewModel4)
        dataSource.append(cellViewModel5)
        dataSource.append(cellViewModel6)
        dataSource.append(cellViewModel7)
        dataSource.append(cellViewModel8)
        items.accept([SectionModel(model: "", items: dataSource)])
        
        let sportName = Driver.just(sportModel.getSportType.sportTypeName)
        let time = Driver.just(sportModel.dataDate)
        let distance = Driver.just(String(format: "%.2lf", Float(sportModel.distance) / 1000.0))
        let metric = UserDefaultsManager.getUserInfo()?.metricUnit ?? 0
        let distanceUnit = Driver.just(metric == 0 ? "km" : "miles")
        
        let coordinates = sportModel.coordinates
        let trajectory = Driver.just((coordinates.count == 0, coordinates))
        
        return Output(items: items,
                      sportName: sportName,
                      time: time,
                      distance: distance,
                      distanceUnit: distanceUnit,
                      trajectory: trajectory)
    }
    
    private var sportModel: SportModel
    
    init(sportModel: SportModel) {
        self.sportModel = sportModel
        super.init()
    }
    
}

extension SportModel {

    /// 轨迹数组
    var coordinates: [CLLocationCoordinate2D] {
//        let bool = arc4random() % 2 + 1
//        if bool == 1 {
//            gpsDeatail = "5|22.536874|113.961758|1281, 5|22.556874|113.961758|1281, 5|22.576874|113.961758|1281"
//        }else {
//            gpsDeatail = ""
//        }
        let tempCoordinateArr = gpsDeatail.components(separatedBy: ",")
        if tempCoordinateArr.count < 2 {
            return []
        }
        var coordinateArr: [CLLocationCoordinate2D] = []
        tempCoordinateArr.forEach { (coordinateStr) in
            let coords = coordinateStr.components(separatedBy: "|")
            let formatter = NumberFormatter()
            formatter.locale = .current
            formatter.allowsFloats = true
            if coords.count >= 4, let latitude = formatter.number(from: coords[1])?.doubleValue, let longitude = formatter.number(from: coords[2])?.doubleValue {
                // 转为GCJ-02(火星坐标)
                let coordinate = TQLocationConverter.transformFromWGS(toGCJ: CLLocationCoordinate2DMake(latitude, longitude))
                coordinateArr.append(coordinate)
            }
        }
        return coordinateArr
    }
    
}