//
//  StepViewModels.swift
//  HPlusFit
//
//  Created by lemo. on 2019/10/4.
//  Copyright © 2019 lemo. All rights reserved.
//

import UIKit

class StepViewModels: ViewModel {

    // 图表数据
    lazy var relay: BehaviorRelay<ChartViewModel> = {
      return BehaviorRelay<ChartViewModel>(value: defaultVM)
    }()
    // 底部数据
    let formRealy = BehaviorRelay<HealthFormModel?>(value: nil)
    // 默认数据
    private lazy var defaultVM: ChartViewModel = {
        var sources: [ChartViewData] = []
        for i in 0...24 {
            sources.append(ChartViewData(date: "", value: 0))
        }
        let chartViewModel: ChartViewModel = ChartViewModel(leftIcon: nil, title: nil, legends: nil, source:sources, chartType: .stepRoundBar, maxAxis: 0, xAxis: [], lineColor: kHexColor(0xEEA82C), center: nil, centerColor: kHexColor(0xEEA82C), centerUnit: nil)
        return chartViewModel
    }()
    /// 当前时间(默认当前)
    private var currenTimeStr = DateClass.getCurrentTimeStr(formatStr: "yyyy-MM-dd")
    private var queryType: DataQueryType = .day
    
    override init() {
        super.init()
        // 默认加载当天
        loadStepData(timeStr: currenTimeStr, queryType: queryType)
    }
    
    // 加载计步数据
    func loadStepData(timeStr: String?, queryType: DataQueryType?) {
        // 无查询类型默认为上一次查询类型
        let tempQueryType = queryType == nil ? self.queryType : queryType!
        self.queryType = tempQueryType
        // 查询时间戳
        let tempTimeStr = timeStr == nil ? currenTimeStr : timeStr!
        currenTimeStr = tempTimeStr
        DataBaseManagerFireBoltt.shared.fbqueryStepModel(dataDate: tempTimeStr, queryType: tempQueryType) { [weak self] (results) in
            guard let `self` = self else { return }
            guard let stepModelArr = results as? [StepModel], stepModelArr.count > 0 else {
                self.relay.accept(self.defaultVM)
                self.formRealy.accept(nil)
                return
            }
            // 拼接数据模型
            var chartViewModel: ChartViewModel!
            var formModel: HealthFormModel?
            switch tempQueryType {
            case .day:
                let stepModel = stepModelArr.first!
                if stepModel.stepNumber == 0 {
                    self.relay.accept(self.defaultVM)
                    self.formRealy.accept(nil)
                    return
                }
                let steps: [Int] = stepModel.stepDetails.components(separatedBy: ",").map { $0.integerValue }
                var sources: [ChartViewData] = []
                var maxAxis = 0
                steps.enumerated().forEach({ (offset, step) in
                    if step > maxAxis {
                        maxAxis = step
                    }
                    sources.append(ChartViewData(date: nil, value: step))
                })
                chartViewModel = ChartViewModel(leftIcon: nil, title: nil, legends: nil, source:sources, chartType: .stepRoundBar, maxAxis: maxAxis, xAxis: ["00:00", "06:00", "12:00", "18:00", "24:00"], lineColor: kHexColor(0x388AFF), center: String(stepModel.stepNumber), centerColor: kHexColor(0x388AFF), centerUnit: MultiLanguageKey_FB.stepTipFB.localized)
                chartViewModel.points = sources.count
                // 底部数据总和
                formModel = HealthFormModel(oneValue: String(maxAxis), twoValue: String(format: "%.2f", Double(stepModel.stepDistance) / 1000.0), threeValue: String(stepModel.stepDuration), fourValue: String(stepModel.stepCalorie))
            case .week:
                let weeks = (0...6).map { DateClass.dateStringOffset(from: tempTimeStr, offset: $0) }
                var sources: [ChartViewData] = []
                var maxAxis = 0
                var totalStep = 0
                var totalDistance = 0
                var totalCalorie: Float = 0
                var totalDuration = 0
                var xAxis: [String] = []
                // 边里匹配对应日期数据数组
                for dataDate in weeks {
                    let showDate = DateClass.getTimeStrToDate(formatStr: "yyyy-MM-dd", timeStr: dataDate).tranFormDateStr(format: "MM/dd")
                    xAxis.append(showDate)
                    var isMatch = false
                    for stepModel in stepModelArr {
                        if dataDate == stepModel.dataDate && stepModel.stepNumber != 0 {
                            isMatch = true
                            if stepModel.stepNumber > maxAxis {
                                maxAxis = stepModel.stepNumber
                            }
                            totalStep += stepModel.stepNumber
                            totalDistance += stepModel.stepDistance
                            totalCalorie += stepModel.stepCalorie
                            totalDuration += stepModel.stepDuration
                            sources.append(ChartViewData(date: nil, value: stepModel.stepNumber))
                            break
                        }
                    }
                    // 添加空数据
                    if !isMatch {
                        sources.append(ChartViewData(date: nil, value: 0))
                    }
                }
                chartViewModel = ChartViewModel(leftIcon: nil, title: nil, legends: nil, source:sources, chartType: .stepRoundBar, maxAxis: maxAxis, xAxis: xAxis, lineColor: kHexColor(0x388AFF), center: String(totalStep), centerColor: kHexColor(0x388AFF), centerUnit: MultiLanguageKey_FB.stepTipFB.localized)
                chartViewModel.points = sources.count
                // 底部数据总和
                formModel = HealthFormModel(oneValue: String(maxAxis), twoValue: String(format: "%.2f", Double(totalDistance) / 1000.0), threeValue: String(totalDuration), fourValue: String(totalCalorie))
            case .month:
                // 获取一个月时间戳数组
                let selectDate = DateClass.getTimeStrToDate(formatStr: "yyyy-MM-dd", timeStr: tempTimeStr)
                let monthSatrtDate = selectDate.startOfCurrentMonth().tranFormDateStr(format: "yyyy-MM-dd")
                let monthRange = selectDate.getMonthHowManyDay()
                let months = monthRange.map { DateClass.dateStringOffset(from: monthSatrtDate, offset: $0 - 1) }
                var sources: [ChartViewData] = []
                var maxAxis = 0
                var totalStep = 0
                var totalDistance = 0
                var totalCalorie: Float = 0
                var totalDuration = 0
                var xAxis: [String] = []
                // 边里匹配对应日期数据数组
                for (offset, dataDate) in months.enumerated() {
                    // 只展示每周的
                    if offset == 0 || offset == months.count - 1 || offset == (months.count / 2) {
                        let showDate = DateClass.getTimeStrToDate(formatStr: "yyyy-MM-dd", timeStr: dataDate).tranFormDateStr(format: "dd")
                        xAxis.append(showDate)
                    }
                    var isMatch = false
                    for stepModel in stepModelArr {
                        if dataDate == stepModel.dataDate && stepModel.stepNumber != 0 {
                            isMatch = true
                            if stepModel.stepNumber > maxAxis {
                                maxAxis = stepModel.stepNumber
                            }
                            totalStep += stepModel.stepNumber
                            totalDistance += stepModel.stepDistance
                            totalCalorie += stepModel.stepCalorie
                            totalDuration += stepModel.stepDuration
                            sources.append(ChartViewData(date: nil, value: stepModel.stepNumber))
                            break
                        }
                    }
                    // 添加空数据
                    if !isMatch {
                        sources.append(ChartViewData(date: nil, value: 0))
                    }
                }
                chartViewModel = ChartViewModel(leftIcon: nil, title: nil, legends: nil, source:sources, chartType: .stepRoundBar, maxAxis: maxAxis, xAxis: xAxis, lineColor: kHexColor(0x388AFF), center: String(totalStep), centerColor: kHexColor(0x388AFF), centerUnit: MultiLanguageKey_FB.stepTipFB.localized)
                chartViewModel.points = sources.count
                // 底部数据总和
                formModel = HealthFormModel(oneValue: String(maxAxis), twoValue: String(format: "%.2f", Double(totalDistance) / 1000.0), threeValue: String(totalDuration), fourValue: String(totalCalorie))
                break
            default:
                self.relay.accept(self.defaultVM)
                self.formRealy.accept(nil)
                return
            }
            // 更新数据
            self.relay.accept(chartViewModel)
            self.formRealy.accept(formModel)
        }
    }
    
}