package com.tourguide.integration.sms;

import com.aliyun.dysmsapi20170525.Client;
import com.aliyun.dysmsapi20170525.models.SendSmsRequest;
import com.aliyun.dysmsapi20170525.models.SendSmsResponse;
import com.aliyun.dysmsapi20170525.models.SendSmsResponseBody;
import com.aliyun.teaopenapi.models.Config;
import com.fasterxml.jackson.core.JsonProcessingException;
import com.fasterxml.jackson.databind.ObjectMapper;
import com.tourguide.common.exception.BusinessException;
import com.tourguide.config.properties.AliyunSmsProperties;
import org.slf4j.Logger;
import org.slf4j.LoggerFactory;
import org.springframework.stereotype.Component;
import org.springframework.util.StringUtils;

import java.util.Collections;
import java.util.HashMap;
import java.util.Map;

@Component
public class AliyunSmsCodeSender implements SmsCodeSender {
    private static final Logger LOGGER = LoggerFactory.getLogger(AliyunSmsCodeSender.class);
    private static final String SUCCESS_CODE = "OK";

    private final AliyunSmsProperties properties;
    private final ObjectMapper objectMapper;

    public AliyunSmsCodeSender(AliyunSmsProperties properties, ObjectMapper objectMapper) {
        this.properties = properties;
        this.objectMapper = objectMapper;
    }

    @Override
    public void sendLoginCode(String phone, String code) {
        ensureConfigured();
        try {
            SendSmsResponse response = createClient().sendSms(new SendSmsRequest()
                    .setPhoneNumbers(phone)
                    .setSignName(properties.getSignName())
                    .setTemplateCode(properties.getLoginTemplateCode())
                    .setTemplateParam(templateParam(code)));
            ensureSuccess(phone, response == null ? null : response.getBody());
        } catch (BusinessException exception) {
            throw exception;
        } catch (Exception exception) {
            LOGGER.error("调用阿里云短信服务失败，手机号：{}", maskPhone(phone), exception);
            throw new BusinessException(502, "短信服务暂不可用，请稍后再试");
        }
    }

    @Override
    public void sendGuideAuditResult(String phone, String guideName, boolean approved) {
        String templateCode = approved
                ? properties.getGuideAuditApprovedTemplateCode()
                : properties.getGuideAuditRejectedTemplateCode();
        if (!hasCommonConfiguration() || !StringUtils.hasText(templateCode)) {
            LOGGER.warn("导游审核短信模板未配置，跳过发送，手机号：{}，审核结果：{}", maskPhone(phone), approved);
            return;
        }
        Map<String, String> parameters = new HashMap<String, String>();
        parameters.put("name", guideName == null ? "导游" : guideName);
        try {
            SendSmsResponse response = createClient().sendSms(new SendSmsRequest()
                    .setPhoneNumbers(phone)
                    .setSignName(properties.getSignName())
                    .setTemplateCode(templateCode)
                    .setTemplateParam(objectMapper.writeValueAsString(parameters)));
            ensureSuccess(phone, response == null ? null : response.getBody());
        } catch (BusinessException exception) {
            throw exception;
        } catch (Exception exception) {
            LOGGER.error("调用阿里云导游审核短信服务失败，手机号：{}", maskPhone(phone), exception);
            throw new BusinessException(502, "审核短信发送失败");
        }
    }

    private Client createClient() throws Exception {
        Config config = new Config()
                .setAccessKeyId(properties.getAccessKeyId())
                .setAccessKeySecret(properties.getAccessKeySecret());
        config.endpoint = properties.getEndpoint();
        return new Client(config);
    }

    private String templateParam(String code) throws JsonProcessingException {
        return objectMapper.writeValueAsString(Collections.singletonMap("code", code));
    }

    private void ensureSuccess(String phone, SendSmsResponseBody body) {
        if (body != null && SUCCESS_CODE.equals(body.getCode())) {
            return;
        }
        String aliyunCode = body == null ? null : body.getCode();
        String aliyunMessage = body == null ? null : body.getMessage();
        LOGGER.warn("阿里云短信发送失败，手机号：{}，错误码：{}，错误信息：{}",
                maskPhone(phone), aliyunCode, aliyunMessage);
        throw new BusinessException(502, "验证码发送失败，请稍后再试");
    }

    private void ensureConfigured() {
        if (!hasCommonConfiguration()
                || !StringUtils.hasText(properties.getLoginTemplateCode())) {
            throw new BusinessException(503, "阿里云短信配置未完成");
        }
    }

    private boolean hasCommonConfiguration() {
        return StringUtils.hasText(properties.getAccessKeyId())
                && StringUtils.hasText(properties.getAccessKeySecret())
                && StringUtils.hasText(properties.getEndpoint())
                && StringUtils.hasText(properties.getSignName());
    }

    private String maskPhone(String phone) {
        if (phone == null || phone.length() < 7) {
            return "****";
        }
        return phone.substring(0, 3) + "****" + phone.substring(phone.length() - 4);
    }
}