another.im-ios/ConversationsClassic/AppCore/Models/Attachment.swift

import Foundation
import GRDB
import Martin
import SwiftUI

enum AttachmentType: Int, Stateable, DatabaseValueConvertible {
    case movie = 0
    case image = 1
    case audio = 2
    case file = 3
    case location = 4
    case contact = 5
}

struct AttachmentItem: DBStorable {
    static let databaseTableName = "attachment_items"

    let id: String
    static let attachment = belongsTo(Attachment.self)
    let type: AttachmentType
    let localPath: URL?
    let remotePath: URL?
    let localThumbnailPath: URL?
    let string: String?
}

struct Attachment: DBStorable {
    static let databaseTableName = "attachments"

    let id: String
    static let items = hasMany(AttachmentItem.self)
    static let message = hasOne(Message.self)
}

extension AttachmentItem: Equatable {}
extension Attachment: Equatable {}