//
// SettingsViewController.swift
// APIExample
//
// Created by 张乾泽 on 2020年7月26日.
// Copyright © 2020 Agora Corp. All rights reserved.
//

import Foundation
import UIKit

protocol SettingsViewControllerDelegate: AnyObject {
 func didChangeValue(key:String, value: AnyObject)
}

class SettingsBaseCell : UITableViewCell
{
 var configs:SettingsBaseParam?
 weak var delegate:SettingsViewControllerDelegate?
 func configure(configs:SettingsBaseParam){
 self.configs = configs
 }
}

class SettingsBaseParam: NSObject
{
 var key:String
 var label:String
 var type:String
 
 init(key:String, label:String, type:String) {
 self.key = key
 self.label = label
 self.type = type
 }
}

class SettingsSliderCell : SettingsBaseCell
{
 @IBOutlet weak var settingLabel: AGLabel!
 @IBOutlet weak var settingSlider: UISlider!
 @IBOutlet weak var settingValue: AGLabel!
 
 @IBAction func onSliderValueChanged(sender:UISlider){
 let val = (sender.value*100).rounded()/100
 settingValue.text = "\(val)"
 guard let configs = self.configs as? SettingsSliderParam else {return}
 delegate?.didChangeValue(key: configs.key, value: val as AnyObject)
 }
 
 override func configure(configs: SettingsBaseParam) {
 super.configure(configs: configs)
 
 guard let param = configs as? SettingsSliderParam else {return}
 settingLabel.text = param.label
 settingSlider.value = param.value
 settingSlider.minimumValue = param.minimumValue
 settingSlider.maximumValue = param.maximumValue
 settingValue.text = "\(settingSlider.value)"
 }
}

class SettingsSliderParam: SettingsBaseParam {
 var value:Float
 var minimumValue:Float
 var maximumValue:Float
 init(key:String, label:String, value:Float, minimumValue:Float, maximumValue:Float) {
 self.value = value
 self.minimumValue = minimumValue
 self.maximumValue = maximumValue
 super.init(key: key, label: label, type: "SliderCell")
 }
}

class SettingsViewController : UITableViewController
{
 var sections:[[SettingsBaseParam]] = []
 var sectionNames:[String] = []
 weak var settingsDelegate:SettingsViewControllerDelegate?
 override func numberOfSections(in tableView: UITableView) -> Int {
 return sections.count
 }
 
 override func tableView(_ tableView: UITableView, numberOfRowsInSection section: Int) -> Int {
 let params = sections[section]
 return params.count
 }
 
 override func tableView(_ tableView: UITableView, cellForRowAt indexPath: IndexPath) -> UITableViewCell {
 let param = sections[indexPath.section][indexPath.row]
 guard let cell = tableView.dequeueReusableCell(withIdentifier: param.type, for: indexPath) as? SettingsBaseCell else {return UITableViewCell()}
 cell.delegate = settingsDelegate
 cell.configure(configs: param)

 return cell
 }
 
 override func tableView(_ tableView: UITableView, titleForHeaderInSection section: Int) -> String? {
 return sectionNames[section]
 }
}