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

import UIKit

class HRViewControllers: ViewController {
    
    /// 日期选择
    private lazy var dateHeaderView: DateSwitchHeaderView = {
        let view = DateSwitchHeaderView(frame: CGRect(x: 0, y: 0, width: kScreenW, height: kScaleHeight(103)))
        view.segControlValueChangeClosure = { [weak self] (type) in
            guard let `self` = self else { return }
            guard let viewModel = self.viewModel as? HRViewModels else { return }
            var dateStr: String = DateClass.todayString()
            var queryType: DataQueryType = .day
            if type == .week {
                queryType = .week
                let weekRegionComps = view.dateSelectedView.dateStr!.components(separatedBy: "-")
                dateStr = weekRegionComps[0].pregReplace(pattern: "/", with: "-")
            }else if type == .month {
                queryType = .month
            }
            viewModel.loadHrData(timeStr: dateStr, queryType: queryType)
        }
        view.dateSelectedClosure = { [weak self] (selectedDateStr) in
            guard let `self` = self else { return }
            guard let viewModel = self.viewModel as? HRViewModels else { return }
            viewModel.loadHrData(timeStr: selectedDateStr, queryType: nil)
        }
        return view
    }()
    // 图表
    private lazy var chartView: MatchStickView = {
        let chart = MatchStickView(frame: CGRect(x: kScreenW, y: 0, width: kScreenW, height: kScaleHeight(278)))
        chart.backgroundColor = .white
        return chart
    }()
    // 底部数据视图
    private lazy var healthFormView: HealthFormView = {
        let view = HealthFormView.loadFromNib()
        view.configUI(type: .heartRate)
        return view
    }()
    // 图表滚动视图
    private lazy var chartScrollView: UIScrollView = {
        let scrollView = UIScrollView()
        scrollView.alwaysBounceHorizontal = true
        scrollView.contentSize = CGSize(width: kScreenW * 3, height: kScaleHeight(278))
        scrollView.isPagingEnabled = true
        scrollView.bounces = false
        scrollView.setContentOffset(CGPoint(x: kScreenW, y: 0), animated: false)
        scrollView.showsHorizontalScrollIndicator = false
        // 添加三个图表
        for i in 0...2 {
            if i == 1 {
                scrollView.addSubview(chartView)
                continue
            }
            let chart = MatchStickView(frame: CGRect(x: CGFloat(i) * kScreenW , y: 0, width: kScreenW, height: kScaleHeight(278)))
            scrollView.addSubview(chart)
        }
        view.addSubview(scrollView)
        return scrollView
    }()

    override func viewDidLoad() {
        super.viewDidLoad()
    }
    
    override func makeUI() {
        super.makeUI()
        view.backgroundColor = kHexColor(0xFAFAFA)
        view.addSubview(dateHeaderView)
        view.addSubview(healthFormView)
        layout()
    }
    
    func layout() {
        // 图表滚动图示
        chartScrollView.snp.makeConstraints { (make) in
            make.left.right.equalToSuperview()
            make.top.equalTo(dateHeaderView.snp.bottom).offset(10)
            make.height.equalTo(kScaleHeight(278))
        }
        // 底部数据
        healthFormView.snp.makeConstraints { (make) in
            make.top.equalTo(chartScrollView.snp.bottom).offset(10)
            make.left.right.equalToSuperview()
            make.height.equalTo(kScaleHeight(180))
        }
    }
    
    override func bindViewModel() {
        super.bindViewModel()
        guard let viewModel = viewModel as? HRViewModels else { return }
        viewModel.relay
            .bind(to: chartView.rx.chartDatsource())
            .disposed(by: rx.disposeBag)
        viewModel.formRealy
            .bind(to: healthFormView.rx.formDataSource())
            .disposed(by: rx.disposeBag)
    }
    
    override func handleEvent() {
        super.handleEvent()
        // 滚动监听
        chartScrollView.rx.didScroll
            .observeOn(MainScheduler.asyncInstance)
            .subscribe(onNext: { [weak self] _ in
                guard let `self` = self else { return }
                // 前后日期未达到的 禁止滚动
                let offsetX = self.chartScrollView.contentOffset.x
                if Int(offsetX) % Int(kScreenW) == 0 {
                    return
                }
                if offsetX < kScreenW {
                    // 日期早于2019年不允许向后滚动
                    if !self.dateHeaderView.isforwardEnable(isforward: false) {
                        self.chartScrollView.setContentOffset(CGPoint(x: kScreenW, y: 0), animated: false)
                    }
                    return
                }
                if offsetX > kScreenW {
                    // 当前当周当月不允许向前滚动
                    if !self.dateHeaderView.isforwardEnable(isforward: true) {
                        self.chartScrollView.setContentOffset(CGPoint(x: kScreenW, y: 0), animated: false)
                    }
                }
            })
            .disposed(by: rx.disposeBag)
        chartScrollView.rx.contentOffset
            .observeOn(MainScheduler.asyncInstance)
            .subscribe(onNext: { [weak self] (offset) in
                guard let `self` = self else { return }
                if offset.x == 0 || offset.x == kScreenW * 2 {
                    // 日期切换
                    self.dateHeaderView.switchDate(isforward: offset.x == kScreenW * 2)
                    // 数据更新后 位置交换
                    GCDTimer.shared.scheduledDispatchTimer(WithTimerName: "setContentOffset", timeInterval: 0.1, queue: .main, repeats: false, immediately: false, action: {
                        self.chartScrollView.setContentOffset(CGPoint(x: kScreenW, y: 0), animated: false)
                    })
                }
            })
            .disposed(by: rx.disposeBag)
    }
    
}