mana-swift-ui/Sources/ManaCreditsUI/ManaCreditsModel.swift

import ManaCore
import Observation

/// Lade-State für `ManaView`. Holt Guthaben + letzte Bewegungen parallel.
@MainActor
@Observable
public final class ManaCreditsModel {
    public enum LoadState: Equatable {
        case idle
        case loading
        case loaded
        case failed(String)
    }

    public private(set) var balance: ManaCreditBalance?
    public private(set) var transactions: [ManaCreditTransaction] = []
    public private(set) var state: LoadState = .idle

    private let client: ManaCreditsClient

    public init(client: ManaCreditsClient) {
        self.client = client
    }

    public func load() async {
        state = .loading
        do {
            async let b = client.balance()
            async let t = client.transactions(limit: 25)
            balance = try await b
            transactions = try await t
            state = .loaded
        } catch {
            state = .failed(error.localizedDescription)
        }
    }
}