//
//  UnitSetVC.swift
//  HPlusFit
//
//  Created by lemo. on 2019/9/2.
//  Copyright © 2019 lemo. All rights reserved.
//

import UIKit

// MARK:- 复用
fileprivate enum Resuable {
    static let tableViewCell = ReusableCell<CommonTableViewCell>(nibName: "CommonTableViewCell")
}

class UnitSetVC: TableViewController {
    
    private let relay = BehaviorRelay<[SectionModel<String,TableViewCellModel>]>(value: [])
    private let rxDataSource = RxTableViewSectionedReloadDataSource
        <SectionModel<String, TableViewCellModel>>(configureCell: {
            (dataSource, tv, indexPath, element) in
            let cell = tv.dequeue(Resuable.tableViewCell, for: indexPath)
            cell.bindViewModel(model: element)
            return cell
        })
    
    override func viewDidLoad() {
        super.viewDidLoad()
        setupTableView()
        refreshUnit()
    }
    
    private func setupTableView() {
        view.addSubview(tableView)
        if #available(iOS 13.0, *) {
            tableViewStyle = .insetGrouped
        } else {
            // Fallback on earlier versions
            // tableViewStyle = .grouped
        }
        tableView.register(Resuable.tableViewCell)
//        tableView.sectionHeaderHeight = 0
        tableView.snp.makeConstraints { (make) in
            make.edges.equalToSuperview()
        }
        tableView.rx.setDelegate(self)
            .disposed(by: rx.disposeBag)
        tableView.rx.itemSelected
            .subscribe(onNext: { [weak self] indexPath in
                guard let `self` = self else { return }
                guard var userInfo = UserDefaultsManagerFrieBoltt.getUserInfo() else { return }
                // 保存
                userInfo.metricUnit = indexPath.row
                UserDefaultsManagerFrieBoltt.saveUserInfo(userInfo: userInfo)
                // 发送蓝牙指令
                BluetoothService.shared.unitSetting(metric: indexPath.row)
                // 发出更新通知
                kNotificationCenter.post(Notification(name: Notification.Name(rawValue: UnitChangeFireBoltt)))
                // 刷新界面
                self.refreshUnit()
            })
            .disposed(by: rx.disposeBag)
    }
    
    override func bindViewModel() {
        relay.asObservable()
            .bind(to: tableView.rx.items(dataSource: rxDataSource))
            .disposed(by: rx.disposeBag)
    }
    
    private func refreshUnit() {
        guard let userInfo = UserDefaultsManagerFrieBoltt.getUserInfo() else { return }
        let isMetric = userInfo.metricUnit == 0 ? true : false
        let funcationList: [String] = [MultiLanguageKey_FB.metricFB.localized, MultiLanguageKey_FB.britishFB.localized]
        var items: [TableViewCellModel] = []
        funcationList.enumerated().forEach { (offset, index) in
            let isHiddenBottomLine = offset == funcationList.count - 1
            let rightIcon = (isMetric && offset == 0) || (!isMetric && offset == 1) ? R.image.fb_icon_tick() : nil
            let cellModel = TableViewCellModel(title: index, isSwitch: false, description: nil, isArrows: false, isOn: false, image: nil, isBottomLine: !isHiddenBottomLine, righeImg: rightIcon)
            items.append(cellModel)
        }
        relay.accept([SectionModel(model: "", items: items)])
    }
    
}