//
//  TemperatureViewModels.swift
//  Lookfit
//
//  Created by lemo. on 2020/9/6.
//  Copyright © 2020 Sheldon. All rights reserved.
//

import UIKit

class TemperatureViewModels: 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 = {
        let chartViewModel: ChartViewModel = ChartViewModel(leftIcon: nil, title: nil, legends: nil, source: [], chartType: .gradentFill, maxAxis: 0, xAxis: [], lineColor: kHexColor(0x27ABFF), isContinuous: false, isShowMeasureLine: false)
        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
        loadHrData(timeStr: currenTimeStr, queryType: queryType)
    }
    
    // 加载心率数据
    func loadHrData(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
        DataBaseManager.shared.queryTemperatureData(dataDate: tempTimeStr, queryType: tempQueryType) { [weak self] (results) in
            guard let `self` = self else { return }
            guard let tempModelArr = results as? [TemperatureModel], tempModelArr.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 tempModel = tempModelArr.first!
                if tempModel.temperatureAvg == 0 {
                    self.relay.accept(self.defaultVM)
                    self.formRealy.accept(nil)
                    return
                }
                let temps: [CGFloat] = tempModel.temperatureDetails.components(separatedBy: ",").map { CGFloat($0.components(separatedBy: "|").first?.floatValue ?? 0)}
                var sources: [ChartViewData] = []
                var maxAxis: CGFloat = 0
                temps.enumerated().forEach({ (offset, temp) in
                    if temp > maxAxis {
                        maxAxis = temp
                    }
                    sources.append(ChartViewData(date: nil, floatValue: temp))
                })
                chartViewModel = ChartViewModel(source: sources, chartType: .temp, floatMaxAxis: maxAxis * 1.2, xAxis:  ["00:00", "06:00", "12:00", "18:00", "24:00"], lineColor: kHexColor(0x27ABFF), isContinuous: false, isShowMeasureLine: false, center: String(format: "%.1lf", tempModel.temperatureAvg), centerColor: kHexColor(0x27ABFF), centerUnit: MultiLanguageKey.centigrade.localized)
                chartViewModel.points = sources.count
                // 底部数据总和
                formModel = HealthFormModel(oneValue: String(format: "%.1lf", tempModel.temperatureAvg), twoValue: String(format: "%.1lf", tempModel.temperatureMax), threeValue: String(format: "%.1lf", tempModel.temperatureMin), fourValue: "")
            case .week:
                // 获取一周时间戳数组
                let weeks = (0...6).map { DateClass.dateStringOffset(from: tempTimeStr, offset: $0) }
                var sources: [ChartViewData] = []
                var maxAxis: Double = 0
                var totalAvgTemp: Double = 0
                var minTemp: Double = 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 tempModel in tempModelArr {
                        if dataDate == tempModel.dataDate {
                            isMatch = true
                            if tempModel.temperatureAvg > maxAxis {
                                maxAxis = tempModel.temperatureAvg
                            }
                            if tempModel.temperatureAvg < minTemp || minTemp == 0 {
                                minTemp = tempModel.temperatureAvg
                            }
                            totalAvgTemp += tempModel.temperatureAvg
                            sources.append(ChartViewData(date: nil, floatValue: CGFloat(tempModel.temperatureAvg)))
                            break
                        }
                    }
                    // 添加空数据
                    if !isMatch {
                        sources.append(ChartViewData(date: nil, floatValue: 0))
                    }
                }
                totalAvgTemp = totalAvgTemp / Double(tempModelArr.count)
                chartViewModel = ChartViewModel(source: sources, chartType: .temp, floatMaxAxis: CGFloat(maxAxis) * 1.2, xAxis:  xAxis, lineColor: kHexColor(0x27ABFF), isContinuous: false, isShowMeasureLine: false, center: String(format: "%.1lf", totalAvgTemp), centerColor: kHexColor(0x27ABFF), centerUnit: MultiLanguageKey.centigrade.localized)
                chartViewModel.points = sources.count
                // 底部数据总和
                formModel = HealthFormModel(oneValue: String(format: "%.1lf", totalAvgTemp), twoValue: String(format: "%.1lf", maxAxis), threeValue: String(format: "%.1lf", minTemp), fourValue: "")
            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: Double = 0
                var totalAvgTemp: Double = 0
                var minTemp: Double = 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 tempModel in tempModelArr {
                        if dataDate == tempModel.dataDate {
                            isMatch = true
                            if tempModel.temperatureAvg > maxAxis {
                                maxAxis = tempModel.temperatureAvg
                            }
                            if tempModel.temperatureAvg < minTemp || minTemp == 0 {
                                minTemp = tempModel.temperatureAvg
                            }
                            totalAvgTemp += tempModel.temperatureAvg
                            sources.append(ChartViewData(date: nil, floatValue: CGFloat(tempModel.temperatureAvg)))
                            break
                        }
                    }
                    // 添加空数据
                    if !isMatch {
                        sources.append(ChartViewData(date: nil, floatValue: 0))
                    }
                }
                totalAvgTemp = totalAvgTemp / Double(tempModelArr.count)
                chartViewModel = ChartViewModel(source: sources, chartType: .temp, floatMaxAxis: CGFloat(maxAxis) * 1.2, xAxis:  xAxis, lineColor: kHexColor(0x27ABFF), isContinuous: false, isShowMeasureLine: false, center: String(format: "%.1lf", totalAvgTemp), centerColor: kHexColor(0x27ABFF), centerUnit: MultiLanguageKey.centigrade.localized)
                chartViewModel.points = sources.count
                // 底部数据总和
                formModel = HealthFormModel(oneValue: String(format: "%.1lf", totalAvgTemp), twoValue: String(format: "%.1lf", maxAxis), threeValue: String(format: "%.1lf", minTemp), fourValue: "")
            default:
                self.relay.accept(self.defaultVM)
                self.formRealy.accept(nil)
                return
            }
            // 更新数据
            self.relay.accept(chartViewModel)
            self.formRealy.accept(formModel)
        }
    }
    
}