import Foundation
import Capacitor
import FirebaseCore
import FirebaseAuth

public class FirebaseAuthenticationHelper {
    public static func createSignInResult(credential: AuthCredential?, user: User?, idToken: String?, nonce: String?) -> JSObject {
        let userResult = self.createUserResult(user)
        let credentialResult = self.createCredentialResult(credential, idToken: idToken, nonce: nonce)
        var result = JSObject()
        result["user"] = userResult
        result["credential"] = credentialResult
        return result
    }

    public static func createUserResult(_ user: User?) -> JSObject? {
        guard let user = user else {
            return nil
        }
        var result = JSObject()
        result["displayName"] = user.displayName
        result["email"] = user.email
        result["emailVerified"] = user.isEmailVerified
        result["isAnonymous"] = user.isAnonymous
        result["phoneNumber"] = user.phoneNumber
        result["photoUrl"] = user.photoURL?.absoluteString
        result["providerId"] = user.providerID
        result["tenantId"] = user.tenantID
        result["uid"] = user.uid
        return result
    }

    public static func createCredentialResult(_ credential: AuthCredential?, idToken: String?, nonce: String?) -> JSObject? {
        if credential == nil && idToken == nil && nonce == nil {
            return nil
        }
        var result = JSObject()
        if let credential = credential {
            result["providerId"] = credential.provider
            if let oAuthCredential = credential as? OAuthCredential {
                let oAuthAccessToken = oAuthCredential.accessToken
                if oAuthAccessToken != nil {
                    result["accessToken"] = oAuthAccessToken
                }
                let oAuthIdToken = oAuthCredential.idToken
                if oAuthIdToken != nil {
                    result["idToken"] = oAuthIdToken
                }
                let oAuthSecret = oAuthCredential.secret
                if oAuthSecret != nil {
                    result["secret"] = oAuthSecret
                }
            }
        }
        if let idToken = idToken {
            result["idToken"] = idToken
        }
        if let nonce = nonce {
            result["nonce"] = nonce
        }
        return result
    }
}