package Send_Email;

import java.util.Map;
import java.util.concurrent.ConcurrentHashMap;

public class Deal_i_code{
    private static final Map<String, I_Code> codeMap = new ConcurrentHashMap<>();

    private static class I_Code {
        String code;
        long createTime;
        private static final long EXPIRATION_TIME = 5 * 60 * 1000;

        I_Code(String code) {
            this.code = code;
            this.createTime = System.currentTimeMillis();
        }

        boolean isExpired() {
            return System.currentTimeMillis() - createTime > EXPIRATION_TIME;
        }
    }

    public static String generate_code(String email) {
        String code = Generate_i_code.generateCode(6);
        codeMap.put(email, new I_Code(code));
        return code;
    }

    public static boolean judge_code(String email, String inputCode) {
        I_Code codeInfo = codeMap.get(email);
        if (codeInfo == null) {
            return false;
        }
        if (codeInfo.isExpired()) {
            codeMap.remove(email);
            return false;
        }
        boolean isValid = codeInfo.code.equals(inputCode);
        if (isValid) {
            codeMap.remove(email);
        }
        return isValid;
    }

    public static void clean_codes() {
        codeMap.entrySet().removeIf(entry -> entry.getValue().isExpired());
    }

    public static void clean_all_codes(){
        if (!codeMap.isEmpty()) {
            codeMap.clear();
        }
    }
}