//
//  ScanQRViewModel.swift
//  PaiAi
//
//  Created by ffib on 2018/12/18.
//  Copyright © 2018 yb. All rights reserved.
//

import Foundation

protocol ScanQRViewModelDelegate {
    func navigateTo()
}

public final class ScanQRViewModel {
    fileprivate var groupResource: Resource<GroupItem>?
    fileprivate var sessionResource: Resource<GroupItem>?
    
    public init() {
        groupResource = Resource<GroupItem>(url: .joinGroup, param: ["user_id": SharedUserInfo.userId as AnyObject,
                                                                    "nickname": SharedUserInfo.name as AnyObject],
                                            parse: parse)
        sessionResource = Resource<GroupItem>(url: .joinSession, param: ["user_id": SharedUserInfo.userId as AnyObject,
                                                                          "nickname": SharedUserInfo.name as AnyObject],
                                              parse: parse)
    }
    
    public func parse(json: [String: AnyObject]) -> GroupItem? {
        guard let data = json["data"] as? [String: AnyObject],
        let groupInfo = data["group"] as? [String: AnyObject] else { return nil }
        
        return GroupItem(value: groupInfo)
    }
    
    public func join(code: String) {
        let strs = code.components(separatedBy: "/")
        guard strs.count > 2, let params = strs.last else { return }
        let flag = strs[strs.count - 2]
        switch flag {
        case "s":
            guard let lensman_id = params.components(separatedBy: "=").last,
                let session_id = params.components(separatedBy: "?").first else { return }
            joinSession(session_id: session_id, lensman_id: lensman_id)
        case "g":
            let group_id = params
            joinGroup(group_id: group_id)
        default:
            return
        }
    }
    
    fileprivate func joinGroup(group_id: String) {
        groupResource?.parameter["group_id"] = group_id as AnyObject
        NetworkApi.share.post(resource: groupResource!) { (result) in
            
        }
    }
    
    fileprivate func joinSession(session_id: String, lensman_id: String) {
        sessionResource?.parameter["session_id"] = session_id as AnyObject
        sessionResource?.parameter["lensman_id"] = lensman_id as AnyObject
        NetworkApi.share.post(resource: sessionResource!) { (result) in
            
        }
    }
}