如何统计使用Cloud Firebase在Swift UI中选择一个选项的人数？

import Firebase

// 在用户进行选择时调用此函数
func recordVote(option: String) {
    let db = Firestore.firestore()
    let voteRef = db.collection("votes").document()
    
    voteRef.setData(["option": option]) { error in
        if let error = error {
            print("Error recording vote: \(error.localizedDescription)")
        } else {
            print("Vote recorded successfully!")
        }
    }
}

import Firebase

// 统计每个选项的人数
func countVotes() {
    let db = Firestore.firestore()
    let votesRef = db.collection("votes")
    
    votesRef.getDocuments { snapshot, error in
        if let error = error {
            print("Error counting votes: \(error.localizedDescription)")
        } else {
            var voteCounts = [String: Int]()
            
            for document in snapshot!.documents {
                let option = document.data()["option"] as! String
                
                if let count = voteCounts[option] {
                    voteCounts[option] = count + 1
                } else {
                    voteCounts[option] = 1
                }
            }
            
            print("Vote counts: \(voteCounts)")
        }
    }
}