import UIKit
import AddressBook

class ContactSelectTableViewController: UITableViewController
{
    var contacts : NSArray = []

    var emptyDictionary: CFDictionaryRef?

    var addressBook: ABAddressBookRef?

    override func viewDidLoad()
    {
        super.viewDidLoad()

        // Uncomment the following line to preserve selection between presentations
        // self.clearsSelectionOnViewWillAppear = false

        // Uncomment the following line to display an Edit button in the navigation bar for this view controller.
        // self.navigationItem.rightBarButtonItem = self.editButtonItem()

        checkContact()
    }

    override func didReceiveMemoryWarning()
    {
        super.didReceiveMemoryWarning()
        // Dispose of any resources that can be recreated.
    }

    // MARK: - Table view data source

    override func numberOfSectionsInTableView(tableView: UITableView) -> Int {
        // #warning Potentially incomplete method implementation.
        // Return the number of sections.
        return 1
    }

    override func tableView(tableView: UITableView, numberOfRowsInSection section: Int) -> Int {
        // #warning Incomplete method implementation.
        // Return the number of rows in the section.
        return 1
    }


    override func tableView(tableView: UITableView, cellForRowAtIndexPath indexPath: NSIndexPath) -> UITableViewCell
    {
        let cell : ContactTableViewCell = tableView.dequeueReusableCellWithIdentifier("Contact Cell", forIndexPath: indexPath) as ContactTableViewCell

        // Configure the cell...

        //Setup Image
        cell.userImage.layer.cornerRadius = cell.userImage.frame.size.height/2
        cell.userImage.layer.borderColor = UIColor.blackColor().CGColor
        cell.userImage.layer.borderWidth = 0.5
        cell.userImage.layer.masksToBounds = true
        cell.userImage.clipsToBounds = true

        return cell
    }

    override func tableView(tableView: UITableView, didSelectRowAtIndexPath indexPath: NSIndexPath)
    {
        tableView.deselectRowAtIndexPath(indexPath, animated: true)
    }

    func extractABAddressBookRef(abRef: Unmanaged<ABAddressBookRef>!) -> ABAddressBookRef?
    {
        if let ab = abRef {
            return Unmanaged<NSObject>.fromOpaque(ab.toOpaque()).takeUnretainedValue()
        }
        return nil
    }

    func checkContact()
    {
        if (ABAddressBookGetAuthorizationStatus() == ABAuthorizationStatus.NotDetermined)
        {
            println("requesting access...")
            var errorRef: Unmanaged<CFError>? = nil
            addressBook = extractABAddressBookRef(ABAddressBookCreateWithOptions(nil, &errorRef))
            ABAddressBookRequestAccessWithCompletion(addressBook, { success, error in
                if success {
                    self.getContactNames()
                } else {
                    let alertController = UIAlertController(title: nil , message: "If you want to allow 'PayMeBack' to acces your Contacts at a later time, you can do so through Privacy Settings.", preferredStyle: .Alert)

                    let dismiss = UIAlertAction(title: "Ok", style: .Cancel, handler: nil)

                    // let Text = UIAlertAction(title: "Text", style: .Default, handler: nil) essentially a dismiss button

                    alertController.addAction(dismiss)
                    self.presentViewController(alertController, animated: true, completion: nil)
                }
            })
        }
        else if (ABAddressBookGetAuthorizationStatus() == ABAuthorizationStatus.Denied || ABAddressBookGetAuthorizationStatus() == ABAuthorizationStatus.Restricted) {
            println("access denied")
        }
        else if (ABAddressBookGetAuthorizationStatus() == ABAuthorizationStatus.Authorized) {
            println("access granted")
            self.getContactNames()
        }
    }

    func getContactNames()
    {
        var errorRef: Unmanaged<CFError>?
        addressBook = extractABAddressBookRef(ABAddressBookCreateWithOptions(nil, &errorRef))
        var contactList: NSArray = ABAddressBookCopyArrayOfAllPeople(addressBook).takeRetainedValue()
        println("records in the array \(contactList.count)")

        for record:ABRecordRef in contactList
        {
            var contactPerson: ABRecordRef = record
            var contactName: String = ABRecordCopyCompositeName(contactPerson).takeRetainedValue() as String
            println ("\(contactName)")
        }
    }

}