//
//  McareCrackCheck.swift
//  MCareSwift
//
//  Created by heesungkim on 2017. 2. 14..
//  Copyright © 2017년 idatabank. All rights reserved.
//

import Foundation
import MCareFramework

class McareCrackCheck {
    
    private let bundlePath:String = Bundle.main.bundlePath
    private var mcareLog:MCareLogger?
    
    public init(){
        mcareLog = MCareLogger.sharedInstance()
    }
    
    func isCrack() -> String {
        
        var isCrack = false
        var result:String = ""
        
        if self.checkInfoFile() {
            isCrack = true
            result = result.appending(", ").appending(CommonConstants.CRACK_CODE_1002)
        }
        
        if self.checkPid() {
            isCrack = true
            result = result.appending(", ").appending(CommonConstants.CRACK_CODE_1003)
        }
        
        if self.checkPiratNameCodeSignature() {
            isCrack = true
            result = result.appending(", ").appending(CommonConstants.CRACK_CODE_1004)
        }
        
        if self.checkPiratNameCodeResource() {
            isCrack = true
            result = result.appending(", ").appending(CommonConstants.CRACK_CODE_1005)
        }

        if isCrack {
            result = result.substring(from: result.index(result.startIndex, offsetBy: 2))
        }
        else {
            result = result.appending(CommonConstants.CRACK_CODE_1001)
        }
        
        return result
    }
    
    func checkInfoFile() -> Bool {
        let path:String = self.bundlePath.appending("/Info.plist")
        let fileInfo:NSDictionary = Bundle.main.infoDictionary! as NSDictionary
        let fileManager:FileManager = FileManager.default
        var fileAttr:NSDictionary!
        
        do {
            fileAttr = try fileManager.attributesOfItem(atPath: path) as NSDictionary
        } catch {
            mcareLog?.error(output:"")
        }
        
        if fileAttr != nil {
            let cSIDArr = ["Si", "gne", "rIde", "ntity"]
            let cSID:String = cSIDArr.joined()
            
            if fileInfo.value(forKey: cSID) != nil {
                return true
            }
        }
        return false
    }
    
    func checkPid() -> Bool {
        let root:Int = Int(getpid())
        if root <= 10 {
            return true
        }
        return false
    }
    
    func checkPiratNameCodeSignature() -> Bool {
        let fileExists:Bool = FileManager.default.fileExists(atPath: bundlePath.appending("/_CodeSignature"))
        if !fileExists {
            return true
        }
        return false
    }
    
    func checkPiratNameCodeResource() -> Bool {
        let fileExists:Bool = FileManager.default.fileExists(atPath: bundlePath.appending("/_CodeSignature/CodeResources"))
        if !fileExists {
            return true
        }
        return false
    }
    
}