import Foundation
import CoreData

@objc(WorkoutLog)
public class WorkoutLog: NSManagedObject, Identifiable {
    @NSManaged public var date: Date
    @NSManaged public var sets: Int32
    @NSManaged public var reps: Int32
    @NSManaged public var weight: Int32
    @NSManaged public var order: Int32
    @NSManaged public var exerciseName: String
    @NSManaged public var currentStateIndex: Int32
    @NSManaged public var elapsedSeconds: Int32
    @NSManaged public var completed: Bool
    @NSManaged public var loadType: Int32
    @NSManaged public var duration: Date?
    @NSManaged public var notes: String?

    @NSManaged public var workout: Workout?

    public var id: NSManagedObjectID { objectID }

    var status: WorkoutStatus {
        get {
            willAccessValue(forKey: "status")
            let raw = primitiveValue(forKey: "status") as? String ?? "notStarted"
            didAccessValue(forKey: "status")
            return WorkoutStatus(rawValue: raw) ?? .notStarted
        }
        set {
            willChangeValue(forKey: "status")
            setPrimitiveValue(newValue.rawValue, forKey: "status")
            didChangeValue(forKey: "status")
        }
    }

    var loadTypeEnum: LoadType {
        get { LoadType(rawValue: Int(loadType)) ?? .weight }
        set { loadType = Int32(newValue.rawValue) }
    }

    // Duration helpers for minutes/seconds conversion
    var durationMinutes: Int {
        get {
            guard let duration = duration else { return 0 }
            return Int(duration.timeIntervalSince1970) / 60
        }
        set {
            let seconds = durationSeconds
            duration = Date(timeIntervalSince1970: TimeInterval(newValue * 60 + seconds))
        }
    }

    var durationSeconds: Int {
        get {
            guard let duration = duration else { return 0 }
            return Int(duration.timeIntervalSince1970) % 60
        }
        set {
            let minutes = durationMinutes
            duration = Date(timeIntervalSince1970: TimeInterval(minutes * 60 + newValue))
        }
    }
}

// MARK: - Fetch Request

extension WorkoutLog {
    @nonobjc public class func fetchRequest() -> NSFetchRequest<WorkoutLog> {
        return NSFetchRequest<WorkoutLog>(entityName: "WorkoutLog")
    }

    static func orderedFetchRequest(for workout: Workout) -> NSFetchRequest<WorkoutLog> {
        let request = fetchRequest()
        request.predicate = NSPredicate(format: "workout == %@", workout)
        request.sortDescriptors = [NSSortDescriptor(keyPath: \WorkoutLog.order, ascending: true)]
        return request
    }
}