package com.greenorange.promotion.config;

import com.wechat.pay.java.core.RSAAutoCertificateConfig;
import com.wechat.pay.java.core.util.IOUtil;
import com.wechat.pay.java.service.payments.jsapi.JsapiServiceExtension;
import com.wechat.pay.java.service.refund.RefundService;
import lombok.Data;
import lombok.extern.slf4j.Slf4j;
import org.springframework.boot.context.properties.ConfigurationProperties;
import org.springframework.context.annotation.Bean;
import org.springframework.context.annotation.Configuration;
import org.springframework.core.io.ClassPathResource;
import org.springframework.stereotype.Component;

import java.io.IOException;

@Data
@Slf4j
@Configuration
@Component("WxPayConfig")
@ConfigurationProperties(prefix = "wx.pay")
public class WxPayConfig {

    private String appId;

    private String apiV3Key;

    private String notifyUrl;

    private String merchantId;

    private String privateKeyPath;

    private String merchantSerialNumber;

    // RSA配置
    private RSAAutoCertificateConfig RSAConfig;

    // JSAPI支付
    private JsapiServiceExtension jsapiServiceExtension;

    // 退款
    private RefundService refundService;

    /**
     * 初始化配置
     */
    @Bean
    public boolean initWxPayConfig() throws IOException {
        this.RSAConfig = buildRSAAutoCertificateConfig();
        this.jsapiServiceExtension = buildJsapiServiceExtension(RSAConfig);
        this.refundService = buildRefundService(RSAConfig);
        return true;
    }

    // 构建并使用自动更新平台证书的RSA配置，一个商户号只能初始化一个配置，否则会因为重复的下载任务报错
    private RSAAutoCertificateConfig buildRSAAutoCertificateConfig() throws IOException {
        // 将 resource 目录下的文件转为 InputStream，然后利用 IOUtil.toString(inputStream) 转化为密钥
        String privateKey = IOUtil.toString(new ClassPathResource(privateKeyPath).getInputStream());
        return new RSAAutoCertificateConfig.Builder()
                .merchantId(merchantId)
                .privateKey(privateKey)
                .merchantSerialNumber(merchantSerialNumber)
                .apiV3Key(apiV3Key)
                .build();
    }

    // 构建JSAPI支付
    private JsapiServiceExtension buildJsapiServiceExtension(RSAAutoCertificateConfig config) {
        return new JsapiServiceExtension.Builder().config(config).build();
    }

    // 构建退款
    private RefundService buildRefundService(RSAAutoCertificateConfig config) {
        return new RefundService.Builder().config(config).build();
    }

}