import FirebaseFirestore
import FirebaseAuth

// MARK: - CLOUD ENGINE
class CloudEngine {
    static var db: Firestore? {
        return FirebaseApp.app() != nil ? Firestore.firestore() : nil
    }

    static func signInSilently() {
        guard FirebaseApp.app() != nil else { return }
        if Auth.auth().currentUser == nil { Auth.auth().signInAnonymously() }
    }

    static func save(card: SavedCard) async {
        guard let db = db, let uid = Auth.auth().currentUser?.uid else { return }
        let data: [String: Any] = [
            "name": card.name,
            "set": card.setCode,
            "num": card.collectorNumber,
            "val": card.currentValuation ?? 0.0,
            "cond": card.condition,
            "foil": card.foilType,
            "coll": card.collectionName,
            "loc": card.storageLocation,
            "grade": card.grade ?? "",
            "svc": card.gradingService ?? "",
            "cert": card.certNumber ?? "",
            "date": card.dateAdded,
            "curr": card.currencyCode ?? "USD",
            "rarity": card.rarity ?? "",
            "colors": card.colorIdentity ?? [],
            "ser": card.isSerialized ?? false,
            "img": card.imageFileName,
            "custom": card.isCustomValuation
        ]
        do {
            try await db.collection("users").document(uid).collection("inventory").document(card.id.uuidString).setData(data, merge: true)
        } catch { print("Cloud Save Error: \(error)") }
    }

    static func delete(card: SavedCard) async {
        guard let db = db, let uid = Auth.auth().currentUser?.uid else { return }
        do {
            try await db.collection("users").document(uid).collection("inventory").document(card.id.uuidString).delete()
        } catch { print("Cloud Delete Error: \(error)") }
    }

}