//
//  FilterMO.swift
//  Tusker
//
//  Created by Shadowfacts on 11/30/22.
//  Copyright © 2022 Shadowfacts. All rights reserved.
//

import Foundation
import CoreData
import Pachyderm

@objc(FilterMO)
public final class FilterMO: NSManagedObject, FilterProtocol {
    
    @nonobjc public class func fetchRequest() -> NSFetchRequest<FilterMO> {
        return NSFetchRequest(entityName: "Filter")
    }
    
    @NSManaged public var id: String
    @NSManaged public var phrase: String
    @NSManaged private var context: String
    @NSManaged public var expiresAt: Date?
    @NSManaged public var irreversible: Bool
    @NSManaged public var wholeWord: Bool
    
    private var _contexts: [Filter.Context]?
    public var contexts: [Filter.Context] {
        get {
            if let _contexts {
                return _contexts
            } else {
                _contexts = context.split(separator: ",").compactMap { .init(rawValue: String($0)) }
                return _contexts!
            }
        }
        set {
            _contexts = newValue
            context = newValue.map(\.rawValue).joined(separator: ",")
        }
    }
    
    public override func didChangeValue(forKey key: String) {
        super.didChangeValue(forKey: key)
        if key == "context" {
            _contexts = nil
        }
    }
    
}

extension FilterMO {
    convenience init(apiFilter filter: Filter, context: NSManagedObjectContext) {
        self.init(context: context)
        self.updateFrom(apiFilter: filter)
    }
    
    func updateFrom(apiFilter filter: Filter) {
        self.id = filter.id
        self.phrase = filter.phrase
        self.contexts = filter.contexts
        self.expiresAt = filter.expiresAt
        self.irreversible = filter.irreversible
        self.wholeWord = filter.wholeWord
    }
}