InteractiveGestureType.swift

//
//  Created by Jake Lin on 3/3/16.
//  Copyright © 2016 IBAnimatable. All rights reserved.
//

import Foundation

/**
 Interactive gesture type: used to pop or dismiss view controller for transitons.
 */
public enum InteractiveGestureType {
  case none
  case `default`          /// The default interactive gesture type from `AnimatedTransitioning`
  case pan(from: GestureDirection)
  case screenEdgePan(from: GestureDirection)
  case pinch(direction: GestureDirection)

  var stringValue: String {
    return String(describing: self)
  }

  /// Returns the string value without qualification
  public var stringValueWithoutQualification: String {
    let namespace = "IBAnimatable." + String(describing: InteractiveGestureType.self) + "." + String(describing: GestureDirection.self) + "."
    return String(describing: self).replacingOccurrences(of: namespace, with: "")
  }

  /**
   GestureDirection: Used to specify the direction in `InteractiveGestureType`
   */
  public enum GestureDirection: String {
    case horizontal
    case vertical
    case left
    case right
    case top
    case bottom
    case close
    case open
  }
}

extension InteractiveGestureType: IBEnum {
  public init(string: String?) {
    guard let string = string else {
      self = .none
      return
    }

    guard let (name, params) = string.extractNameAndParams() else {
      self = .none
      return
    }
    switch name {
    case "default":
      self = .default
    case "pan":
      let direction = GestureDirection(raw: params.toString(0), defaultValue: .left)
      self = .pan(from: direction)
    case "screenedgepan":
      let direction = GestureDirection(raw: params.toString(0), defaultValue: .left)
      self = .screenEdgePan(from: direction)
    case "pinch":
      let direction = GestureDirection(raw: params.toString(0), defaultValue: .open)
      self = .pinch(direction: direction)
    default:
      self = .none
    }
  }
}