import Foundation

/// Neutral projection for project selection. Persistence and customer associations
/// belong to the host application's service.
struct ARProject: Identifiable, Equatable {
    let id: UUID
    let name: String
    let tank: Tank
    let createdAt: Date
    let source: Source
    let reference: String?

    enum Source { case supplied, custom }
}

@MainActor
protocol ARProjectsProviding {
    func updateProject(id: UUID, name: String, tank: Tank) throws -> ARProject
    func deleteProject(id: UUID) throws
    func loadProjects() throws -> [ARProject]
    func createProject(name: String, tank: Tank) throws -> ARProject
}

nonisolated extension TankSize {
    var volumeTitle: String {
        switch self {
        case .t1_2: "2.700 l"
        case .t2_1: "4.850 l"
        case .t2_9: "6.400 l"
        }
    }
}