//
//    Copyright (c) 2015 Max Sokolov https://twitter.com/max_sokolov
//
//    Permission is hereby granted, free of charge, to any person obtaining a copy of
//    this software and associated documentation files (the "Software"), to deal in
//    the Software without restriction, including without limitation the rights to
//    use, copy, modify, merge, publish, distribute, sublicense, and/or sell copies of
//    the Software, and to permit persons to whom the Software is furnished to do so,
//    subject to the following conditions:
//
//    The above copyright notice and this permission notice shall be included in all
//    copies or substantial portions of the Software.
//
//    THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
//    IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY, FITNESS
//    FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR
//    COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER
//    IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN
//    CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.

import UIKit

struct TabletNotifications {
    static let CellAction = "TabletNotificationsCellAction"
}

/**
    The actions that Tablet provides.
*/
public enum ActionType {

    case click
    case select
    case deselect
    case willSelect
    case configure
    case willDisplay
    case shouldHighlight
    case height
    case custom(String)

    var key: String {

        switch (self) {
        case .custom(let key):
            return key
        default:
            return "_\(self)"
        }
    }
}

public class ActionData<DataType, CellType> {

    public let cell: CellType?
    public let item: DataType
    public let itemIndex: Int
    public let indexPath: NSIndexPath
    public let userInfo: [NSObject: AnyObject]?

    init(cell: CellType?, indexPath: NSIndexPath, item: DataType, itemIndex: Int, userInfo: [NSObject: AnyObject]?) {

        self.cell = cell
        self.indexPath = indexPath
        self.item = item
        self.itemIndex = itemIndex
        self.userInfo = userInfo
    }
}

enum ActionHandler<DataType, CellType> {
    
    case Handler((data: ActionData<DataType, CellType>) -> Void)
    case ValueHandler((data: ActionData<DataType, CellType>) -> AnyObject?)
    
    func invoke(data: ActionData<DataType, CellType>) -> ReturnValue {
        
        switch (self) {
        case .Handler(let handler):
            handler(data: data)
            return nil
        case .ValueHandler(let handler):
            return handler(data: data)
        }
    }
}

/**
    A custom action that you can trigger from your cell.
    You can eacily catch actions using a chaining manner with your row builder.
*/
public class Action {

    /// The cell that triggers an action.
    public let cell: UITableViewCell

    /// The action unique key.
    public let key: String

    /// The custom user info.
    public let userInfo: [NSObject: AnyObject]?

    public init(key: String, sender: UITableViewCell, userInfo: [NSObject: AnyObject]? = nil) {

        self.key = key
        self.cell = sender
        self.userInfo = userInfo
    }

    public func invoke() {
        NSNotificationCenter.defaultCenter().postNotificationName(TabletNotifications.CellAction, object: self, userInfo: userInfo)
    }
}