//
//  LocalStorage.swift
//  PaiAi
//
//  Created by mac on 2016/10/28.
//  Copyright © 2016年 FFIB. All rights reserved.
//

import UIKit

extension GroupItem: ArrayUserDefaultCodable {
    init(value: [String: AnyObject]) {
        self.init(JSON: value)!
    }
    
    func toDictionary() -> [String: AnyObject] {
        return toJSON() as [String : AnyObject]
    }
}

extension UserDefaults {
    struct GroupInfo: ArrayUserDefaultable {
        typealias Item = GroupItem

        enum ArrayDefaultKey: String {
            case recentGroup
        }
    }
}

struct RecentGroupInfo {
    
    static var share: RecentGroupInfo {
        return RecentGroupInfo()
    }
    
    private var infos: [GroupItem]
    private var lock: NSLock
    var count: Int {
        return infos.count
    }
    
    init() {
        infos = UserDefaults.GroupInfo.array(forKey: .recentGroup)
        lock = NSLock()
    }
    
    subscript(index: Int) -> GroupItem {
        return infos[index]
    }
    
    mutating func add(_ item: GroupItem) {
        lock.lock()
        if infos.count == 3 {
            infos.removeFirst()
        }
        infos.append(item)
        lock.unlock()
    }
    
    func values() -> [GroupItem] {
        return infos.reversed()
    }
    
    func save() {
        UserDefaults.GroupInfo.set(infos, forKey: .recentGroup)
    }
}

//func addGroupInfoToRecent(_ groupInfo: GroupModel) {
//    let group = NSKeyedArchiver.archivedData(withRootObject: groupInfo.toJSON())
//    let md5Id = groupInfo.group_id.digestString(algorithm: .md5)
//    let data: [String: Data] = [md5Id: group]
//    if var array = UserDefaults.Group.array(forKey: .lastVisitGroup) as? [[String: Data]] {
//        var arr = [[String: Data]]()
//        for i in 0..<array.count {
//            if (Array(array[i].keys) as [String])[0] != md5Id {
//                arr.append(array[i])
//            }
//        }
//        if arr.count == 3 {
//            arr.removeFirst()
//        }
//        arr.append(data)
//        UserDefaults.Group.set(arr, forKey: .lastVisitGroup)
//    } else {
//        UserDefaults.Group.set([data], forKey: .lastVisitGroup)
//    }
//}

//func searchGroupInfoRecent(index: Int) -> GroupModel {
//    if let locale = UserDefaults.Group.array(forKey: .lastVisitGroup) as? [[String: Data]] {
//        guard let dict = NSKeyedUnarchiver.unarchiveObject(with: (Array(locale[index].values) as [Data])[0]) as? [String: Any] else {
//            return GroupModel()
//        }
//        return GroupModel(map: Map(mappingType: .fromJSON, JSON: dict))
//    }
//    return GroupModel()
//}

//func removeGroupInfoRecent(groupId: String) {
//    let md5Id = groupId.digestString(algorithm: .md5)
//    if let array = UserDefaults.Group.array(forKey: .lastVisitGroup) as? [[String: Data]] {
//       let newArr  = array.filter({ (element) -> Bool in
//            return !element.keys.contains(md5Id)
//        })
//        UserDefaults.Group.set(newArr, forKey: .lastVisitGroup)
//    }
//}

//func returnGroupInfoCount() -> Int {
//    if let locale = UserDefaults.Group.array(forKey: .lastVisitGroup) as? [[String: Data]] {
//        return locale.count
//    }
//    return 0
//}