package com.common.core.utils;

import com.alibaba.fastjson.JSONObject;
import com.common.core.enums.ResultCodeEnum;
import com.common.core.exception.BizException;
import lombok.extern.slf4j.Slf4j;
import org.apache.commons.lang3.StringUtils;
import org.springframework.beans.factory.annotation.Value;
import org.springframework.stereotype.Component;
import software.amazon.awssdk.auth.credentials.AwsBasicCredentials;
import software.amazon.awssdk.auth.credentials.AwsCredentialsProvider;
import software.amazon.awssdk.auth.credentials.InstanceProfileCredentialsProvider;
import software.amazon.awssdk.auth.credentials.StaticCredentialsProvider;
import software.amazon.awssdk.regions.Region;
import software.amazon.awssdk.services.secretsmanager.SecretsManagerClient;
import software.amazon.awssdk.services.secretsmanager.model.*;

import java.util.Base64;

@Slf4j
@Component
public class SecretsManagerUtils {
    @Value("${aws.region}")
    private String regionStr;
    @Value("${aws.secrets.systemauth}")
    private String systemauthName;
    @Value("${aws.secrets.mysql}")
    private String mysqlsecretName;
    @Value("${aws.secrets.sm4}")
    private String SM4SecretName;
    @Value("${aws.secrets.mailauth}")
    private String mailauthName;

    private static JSONObject systemAuth;
    private static JSONObject mysqlsecret;
    private static JSONObject SM4Secret;
    private static JSONObject mailauth;

    private void getInit() {
        if(systemAuth==null){
            systemAuth=this.getSecretByName(systemauthName);
        }
        if(mysqlsecret==null){
            mysqlsecret=this.getSecretByName(mysqlsecretName);
        }
        if(SM4Secret==null){
            SM4Secret=this.getSecretByName(SM4SecretName);
        }
        if(mailauth==null){
            mailauth=this.getSecretByName(mailauthName);
        }
    }
    public JSONObject getSecretByName(String secretName) {
        String key_id = System.getenv("AWS_ACCESS_KEY_ID");
        String access_key = System.getenv("AWS_SECRET_ACCESS_KEY");
        Region region = Region.of(regionStr);
        SecretsManagerClient client = null;
        if(StringUtils.isNotEmpty(key_id) && StringUtils.isNotEmpty(access_key)){
            AwsBasicCredentials awsCreds = AwsBasicCredentials.create(key_id,access_key);
            client = SecretsManagerClient.builder().credentialsProvider(StaticCredentialsProvider.create(awsCreds))
                    .region(region)
                    .build();
        }else {
            AwsCredentialsProvider credentialsProvider = InstanceProfileCredentialsProvider.builder().build();
            client = SecretsManagerClient.builder().credentialsProvider(credentialsProvider)
                    .region(region)
                    .build();
        }
        String secret, decodedBinarySecret;
        GetSecretValueRequest getSecretValueRequest = GetSecretValueRequest.builder()
                .secretId(secretName)
                .build();
        GetSecretValueResponse getSecretValueResponse = null;

        try {
            getSecretValueResponse = client.getSecretValue(getSecretValueRequest);
        } catch (Exception e) {
            log.error(e.getMessage(), e);
            throw new BizException(ResultCodeEnum.AWS_RT_ERROR);
        }
        if (getSecretValueResponse.secretString() != null) {
            return JSONObject.parseObject(getSecretValueResponse.secretString());
        }
        else {
            decodedBinarySecret = new String(Base64.getDecoder().decode(getSecretValueResponse.secretBinary().asByteBuffer()).array());
            return JSONObject.parseObject(getSecretValueResponse.secretString());
        }
    }
    public JSONObject getSecret(String secretName) {
        this.getInit();
        if(secretName.equals(systemauthName)){
            return systemAuth;
        }
        if(secretName.equals(mysqlsecretName)){
            return mysqlsecret;
        }
        if(secretName.equals(SM4SecretName)){
            return SM4Secret;
        }
        if(secretName.equals(mailauthName)){
            return mailauth;
        }
        return getSecretByName(secretName);
    }
}