//

// ChatLayout

// ItemModel.swift

// https://github.com/ekazaev/ChatLayout

//

// Created by Eugene Kazaev in 2020-2023.

// Distributed under the MIT license.

//

// Become a sponsor:

// https://github.com/sponsors/ekazaev

//

import Foundation

import UIKit

struct ItemModel {

    struct Configuration {

        let alignment: ChatItemAlignment

        let preferredSize: CGSize

        let calculatedSize: CGSize?

    }

    let id: UUID

    var preferredSize: CGSize

    var offsetY: CGFloat = .zero

    var calculatedSize: CGSize?

    var calculatedOnce: Bool = false

    var alignment: ChatItemAlignment

    var frame: CGRect {

        CGRect(origin: CGPoint(x: 0, y: offsetY), size: size)

    }

    init(id: UUID = UUID(), with configuration: Configuration) {

        self.id = id

        alignment = configuration.alignment

        preferredSize = configuration.preferredSize

        calculatedSize = configuration.calculatedSize

        calculatedOnce = configuration.calculatedSize != nil

    }

    // We are just resetting `calculatedSize` if needed as the actual size will be found in invalidationContext(forPreferredLayoutAttributes:, withOriginalAttributes:)

    // It is important for the rotation to keep previous frame size.

}