/*

    Copyright (C) 2016 Apple Inc. All Rights Reserved.

    See LICENSE.txt for this sample’s licensing information

    Abstract:

    This extends CKRecord to conform to the Result protocol.

*/

import UIKit

import CloudKit

extension CKRecord: Result {

    var summaryField: String? {

        if let name = objectForKey("name") as? String {

            return name

        }

        if let name = objectForKey("Name") as? String {

            return name

        }

        for key in allKeys() {

            if let string = objectForKey(key) as? String {

                return string

            }

        }

        return recordID.recordName

    }

    var attributeList: [AttributeGroup] {

        let dateFormatter = NSDateFormatter()

        dateFormatter.dateStyle = NSDateFormatterStyle.MediumStyle

        var metadata = [Attribute]()

        var fields = [Attribute]()

        metadata += [

            Attribute(key: "recordType", value: recordType),

            Attribute(key: "recordID"),

            Attribute(key: "recordName", value: recordID.recordName, isNested: true),

            Attribute(key: "zoneID.zoneName", value: recordID.zoneID.zoneName, isNested: true),

            Attribute(key: "zoneID.ownerName", value: recordID.zoneID.ownerName, isNested: true),

            Attribute(key: "recordChangeTag", value: recordChangeTag ?? "")

        ]

        if let modificationDate = modificationDate {

            metadata.append(Attribute(key: "modificationDate", value: dateFormatter.stringFromDate(modificationDate)))

        }

        if let creationDate = creationDate {

            metadata.append(Attribute(key: "creationDate", value: dateFormatter.stringFromDate(creationDate)))

        }

        for key in allKeys() {

            let value = objectForKey(key)

            if let value = value as? String {

                fields.append(

                    Attribute(key: key, value: value)

                )

            } else if let value = value as? CLLocation {

                let coordinate = value.coordinate

                fields += [

                    Attribute(key: key),

                    Attribute(key: "coordinate.latitude", value: String(coordinate.latitude), isNested: true),

                    Attribute(key: "coordinate.longitude", value: String(coordinate.longitude), isNested: true)

                ]

            } else if let value = value as? CKAsset, path = value.fileURL.path {

                fields += [

                    Attribute(key: key),

                    Attribute(key: "fileURL.path", value: path, image: UIImage(contentsOfFile: path)!)

                ]

            }

        }

        var attributeGroups = [ AttributeGroup(title: "Metadata:", attributes: metadata) ]

        if fields.count > 0 {

            attributeGroups.append(AttributeGroup(title: "Fields:", attributes: fields))

        }

        return attributeGroups

    }

}