import Foundation

struct FeedbackStore {
    private static let rejectionKey = "com.mealmood.dishRejections"

    static func rejectionCounts() -> [UUID: Int] {
        guard let data = UserDefaults.standard.data(forKey: rejectionKey),
              let raw = try? JSONDecoder().decode([String: Int].self, from: data)
        else { return [:] }
        return Dictionary(raw.compactMap { k, v in
            UUID(uuidString: k).map { ($0, v) }
        }, uniquingKeysWith: { first, _ in first })
    }

    static func recordRejection(for dishId: UUID) {
        var raw: [String: Int]
        if let data = UserDefaults.standard.data(forKey: rejectionKey),
           let decoded = try? JSONDecoder().decode([String: Int].self, from: data) {
            raw = decoded
        } else {
            raw = [:]
        }
        raw[dishId.uuidString, default: 0] += 1
        if let encoded = try? JSONEncoder().encode(raw) {
            UserDefaults.standard.set(encoded, forKey: rejectionKey)
        }
    }
}