import Foundation

struct CachedBmlForeignLimits: Codable {
    let userName: String
    let limits: [BmlForeignLimit]
}

struct DashboardCachePayload: Codable {
    let foreignLimits: [CachedBmlForeignLimits]
    let mibFinancing: [MibFinanceDeal]
}

struct DashboardCache {
    static let shared = DashboardCache()
    private let udKey = "thijooree_dashboard_v1"
    private init() {}

    func save(foreignLimits: [(userName: String, limits: [BmlForeignLimit])], mibFinancing: [MibFinanceDeal]) {
        let payload = DashboardCachePayload(
            foreignLimits: foreignLimits.map { CachedBmlForeignLimits(userName: $0.userName, limits: $0.limits) },
            mibFinancing: mibFinancing
        )
        guard let json = try? JSONEncoder().encode(payload),
              let encrypted = try? CacheEncryption.shared.encryptData(json) else { return }
        UserDefaults.standard.set(encrypted, forKey: udKey)
    }

    func load() -> DashboardCachePayload? {
        guard let encrypted = UserDefaults.standard.string(forKey: udKey),
              let json = try? CacheEncryption.shared.decryptData(encrypted),
              let payload = try? JSONDecoder().decode(DashboardCachePayload.self, from: json) else { return nil }
        return payload
    }

    func clear() {
        UserDefaults.standard.removeObject(forKey: udKey)
    }
}