//
//  SettingsViewController.swift
//  LoopFollow
//
//  Created by Jon Fawcett on 6/3/20.
//  Copyright © 2020 Jon Fawcett. All rights reserved.
//

import UIKit
import Eureka
import EventKit
import EventKitUI

class SettingsViewController: FormViewController {

    struct cal {
        var title: String
        var identifier: String
    }

    
    override func viewDidLoad() {
        super.viewDidLoad()
        if UserDefaultsRepository.forceDarkMode.value {
            overrideUserInterfaceStyle = .dark
        }
        
        
      
        form +++ Section("Nightscout Settings")
            <<< TextRow(){ row in
                row.title = "URL"
                row.placeholder = "https://mycgm.herokuapp.com"
                row.value = UserDefaultsRepository.url.value
            }.onChange { row in
                guard let value = row.value else { return }
                UserDefaultsRepository.url.value = value.lowercased()
                }
        

        buildGeneralSettings()
        buildAlarmSettings()
        buildGraphSettings()
        buildWatchSettings()
        
        
        
            
        
         }
    
    func buildGeneralSettings() {
        form
            +++ Section("General Settings")
        <<< SwitchRow("colorBGText") { row in
        row.title = "Color Main BG Text"
        row.value = UserDefaultsRepository.colorBGText.value
        }.onChange { [weak self] row in
            guard let value = row.value else { return }
                UserDefaultsRepository.colorBGText.value = value
            // Force main screen update
            guard let mainScreen = self?.tabBarController!.viewControllers?[0] as? MainViewController else { return }
            mainScreen.setBGTextColor()
        }
            <<< SwitchRow("forceDarkMode") { row in
        row.title = "Force Dark Mode (Restart App)"
        row.value = UserDefaultsRepository.forceDarkMode.value
        }.onChange { [weak self] row in
            guard let value = row.value else { return }
                UserDefaultsRepository.forceDarkMode.value = value
        }
        <<< SwitchRow("screenlockSwitchState") { row in
            row.title = "Keep Screen Active"
            row.value = UserDefaultsRepository.screenlockSwitchState.value
            }.onChange { [weak self] row in
                guard let value = row.value else { return }
                
                if value {
                    UserDefaultsRepository.screenlockSwitchState.value = value
                }
            }
        
        <<< SwitchRow("backgroundRefresh"){ row in
            row.title = "Background Refresh"
            row.tag = "backgroundRefresh"
            row.value = UserDefaultsRepository.backgroundRefresh.value
        }.onChange { [weak self] row in
                    guard let value = row.value else { return }
                    UserDefaultsRepository.backgroundRefresh.value = value
            }
        <<< SliderRow() { row in
            row.title = "Refresh Minutes"
            row.tag = "backgroundRefreshFrequency"
            row.steps = 19
            row.value = Float(UserDefaultsRepository.backgroundRefreshFrequency.value)
            row.hidden = "$backgroundRefresh == false"
        }.cellSetup { cell, row in
            cell.slider.minimumValue = 0.5
            cell.slider.maximumValue = 10
        }
        <<< SwitchRow("appBadge"){ row in
            row.title = "Display App Badge"
            row.tag = "appBadge"
            row.value = UserDefaultsRepository.appBadge.value
        }.onChange { [weak self] row in
                    guard let value = row.value else { return }
                    UserDefaultsRepository.appBadge.value = value
                    // Force main screen update
                    guard let mainScreen = self?.tabBarController!.viewControllers?[0] as? MainViewController else { return }
                    mainScreen.nightscoutLoader(forceLoad: true)
        }
    }
    
    func buildAlarmSettings() {
        form
            +++ Section("Alarm Settings")
         <<< SwitchRow("overrideSystemOutputVolume"){ row in
             row.title = "Override System Volume"
             row.value = UserDefaultsRepository.overrideSystemOutputVolume.value
         }.onChange { [weak self] row in
                     guard let value = row.value else { return }
                     UserDefaultsRepository.overrideSystemOutputVolume.value = value
             }
         <<< StepperRow("forcedOutputVolume") { row in
               row.title = "Volume Level"
             row.cell.stepper.stepValue = 0.05
               row.cell.stepper.minimumValue = 0
               row.cell.stepper.maximumValue = 1
               row.value = Double(UserDefaultsRepository.forcedOutputVolume.value)
               row.hidden = "$overrideSystemOutputVolume == false"
                 row.displayValueFor = { value in
                 guard let value = value else { return nil }
                 return "\(Int(value*100))%"
                 }
           }.onChange { [weak self] row in
                   guard let value = row.value else { return }
                   UserDefaultsRepository.forcedOutputVolume.value = Float(value)
           }
        /* <<< StepperRow("fadeInTimeInterval") { row in
             row.title = "Fade-in Seconds"
             row.cell.stepper.stepValue = 5
             row.cell.stepper.minimumValue = 0
             row.cell.stepper.maximumValue = 60
             row.value = Double(UserDefaultsRepository.fadeInTimeInterval.value)
             row.displayValueFor = { value in
             guard let value = value else { return nil }
             return "\(Int(value))"
             }
         }.onChange { [weak self] row in
                 guard let value = row.value else { return }
                 UserDefaultsRepository.fadeInTimeInterval.value = TimeInterval(value)
         }*/
    }
    
    func buildGraphSettings() {
        form
            +++ Section("Graph Settings")
        <<< SwitchRow("switchRowDots"){ row in
            row.title = "Display Dots"
            row.value = UserDefaultsRepository.showDots.value
        }.onChange { [weak self] row in
                    guard let value = row.value else { return }
                    UserDefaultsRepository.showDots.value = value
                // Force main screen update
                guard let mainScreen = self?.tabBarController!.viewControllers?[0] as? MainViewController else { return }
                mainScreen.nightscoutLoader(forceLoad: true)
            }
        <<< SwitchRow("switchRowLines"){ row in
            row.title = "Display Lines"
            row.value = UserDefaultsRepository.showLines.value
        }.onChange { [weak self] row in
                    guard let value = row.value else { return }
                    UserDefaultsRepository.showLines.value = value
            // Force main screen update
            guard let mainScreen = self?.tabBarController!.viewControllers?[0] as? MainViewController else { return }
            mainScreen.nightscoutLoader(forceLoad: true)
                    
        }
        <<< StepperRow("lowLine") { row in
            row.title = "Low BG Display Value"
            row.cell.stepper.stepValue = 1
            row.cell.stepper.minimumValue = 40
            row.cell.stepper.maximumValue = 120
            row.value = Double(UserDefaultsRepository.lowLine.value)
            row.displayValueFor = { value in
                guard let value = value else { return nil }
                return "\(Int(value))"
            }
        }.onChange { [weak self] row in
                guard let value = row.value else { return }
                UserDefaultsRepository.lowLine.value = Int(value)
            // Force main screen update
            guard let mainScreen = self?.tabBarController!.viewControllers?[0] as? MainViewController else { return }
            mainScreen.nightscoutLoader(forceLoad: true)
        }
        <<< StepperRow("highLine") { row in
            row.title = "High BG Display Value"
            row.cell.stepper.stepValue = 1
            row.cell.stepper.minimumValue = 150
            row.cell.stepper.maximumValue = 400
            row.value = Double(UserDefaultsRepository.highLine.value)
            row.displayValueFor = { value in
                guard let value = value else { return nil }
                return "\(Int(value))"
            }
        }.onChange { [weak self] row in
                guard let value = row.value else { return }
                UserDefaultsRepository.highLine.value = Int(value)
            // Force main screen update
            guard let mainScreen = self?.tabBarController!.viewControllers?[0] as? MainViewController else { return }
            mainScreen.nightscoutLoader(forceLoad: true)
        }
    }
    
    func buildWatchSettings(){
        //array of calendars
        let store = EKEventStore()
        let ekCalendars = store.calendars(for: EKEntityType.event)
        var calendars: [cal] = []
        for i in 0..<ekCalendars.count{
            
            let item = cal(title: ekCalendars[i].title, identifier: ekCalendars[i].calendarIdentifier)
            calendars.append(item)
        }
        
        form
        +++ Section(header: "Watch Settings", footer: "Add the Apple calendar complication to your watch face for BG, Trend, Delta, COB, and IOB updated every 5 minutes. It is recommended to create a new calendar called 'Loop' and modify the calendar settings in the iPhone Watch App to only display the Loop calendar on your watch")
        <<< SwitchRow("writeCalendarEvent"){ row in
            row.title = "BG to Calendar"
            row.value = UserDefaultsRepository.writeCalendarEvent.value
        }.onChange { [weak self] row in
                    guard let value = row.value else { return }
                    UserDefaultsRepository.writeCalendarEvent.value = value
            }
        <<< PickerInputRow<String>("calendarIdentifier") { row in
            row.title = "Calendar"
            row.options = calendars.map { $0.identifier }
            row.hidden = "$writeCalendarEvent == false"
            row.value = UserDefaultsRepository.calendarIdentifier.value
            row.displayValueFor = { value in
            guard let value = value else { return nil }
                let matching = calendars
                .flatMap { $0 }
                    .filter { $0.identifier.range(of: value) != nil || $0.title.range(of: value) != nil }
                if matching.count > 0 {

                    return "\(String(matching[0].title))"
                } else {
                    return " - "
                }
            }
        }.onChange { [weak self] row in
                guard let value = row.value else { return }
                UserDefaultsRepository.calendarIdentifier.value = value
        }
    }
 


}