/*

 Copyright (C) 2017 Apple Inc. All Rights Reserved.

 See LICENSE.txt for this sample’s licensing information

 Abstract:

 Creates extensions for the CNContact, CNContactProperty, CNPostalAddress, and

  String classes.

*/

import UIKit

import Contacts

// MARK: - CNContact

extension CNContact {

    /**

        - returns: The formatted name of a contact if there is one and

                   "No Name", otherwise.

    */

    var formattedName: String {

        if let name = CNContactFormatter.string(from: self, style: .fullName) {

            return name.trim()

        }

        return AppConfiguration.TableViewCellLabels.namelessContact

    }

}

// MARK: - CNContactProperty

extension CNContactProperty {

    /// -returns: The name matching the key of the property.

    var nameMatchingKey: String? {

        switch self.key {

            case "emailAddresses": return "Email address"

            case "phoneNumbers": return "Phone numbers"

            case "postalAddresses": return "Postal address"

            default: break

        }

        return nil

    }

    /// -returns: The name matching the value of the property.

    var nameMatchingValue: String? {

        switch self.key {

            case "emailAddresses": return self.value as? String

            case "phoneNumbers":

                if let phoneNumber = self.value as? CNPhoneNumber {

                    return phoneNumber.stringValue

                }

            case "postalAddresses":

                if let address = self.value as? CNPostalAddress {

                    return address.formattedPostalAddress

                }

            default: break

        }

        return nil

    }

    /// -returns: The name matching the localized label of the property.

    var nameMatchingLocalizedLabel: String? {

        if let label = self.label {

            switch key {

                case "emailAddresses": return CNLabeledValue<NSString>.localizedString(forLabel: label)

                case "phoneNumbers": return CNLabeledValue<CNPhoneNumber>.localizedString(forLabel: label)

                case "postalAddresses": return CNLabeledValue<CNPostalAddress>.localizedString(forLabel: label)

                default: break

            }

        }

        return nil

    }

}

// MARK: - CNPostalAddress

extension CNPostalAddress {

    /// -returns: The formatted postal address.

    var formattedPostalAddress: String? {

        let adddress = [self.street, self.city, self.state, self.postalCode, self.country]

        let filteredArray = adddress.filter({ (item: String) in !item.isEmpty })

        if !filteredArray.isEmpty {

            return filteredArray.joined(separator: ", ")

        }

        return nil

    }

}

// MARK: - String

extension String {

    /// -returns: A string without white spaces and new lines.

    func trim() -> String {

        return self.trimmingCharacters(in: .whitespacesAndNewlines)

    }

}