package com.whyc.controller;

import com.whyc.dto.Response;
import com.whyc.util.ActionUtil;
import io.swagger.annotations.Api;
import io.swagger.annotations.ApiOperation;
import org.springframework.web.bind.annotation.GetMapping;
import org.springframework.web.bind.annotation.RequestMapping;
import org.springframework.web.bind.annotation.RestController;

import java.security.NoSuchAlgorithmException;
import java.security.SecureRandom;

@RequestMapping("message")
@RestController
@Api(tags = "验证码")
public class MessageController {

    @ApiOperation("获取验证码")
    @GetMapping("/getFontDynamicCode")
    public Response getFontDynamicCode() throws NoSuchAlgorithmException {
        StringBuilder sb = new StringBuilder();
        String originStr = "0123456789abcdefghjkmnpqrstuvwxyzABCDEFGHJKMNPQRSTUVWXYZ0123456789";
        SecureRandom random;
        random = SecureRandom.getInstance("SHA1PRNG");

        for (int i = 0; i < 4; i++) {
            sb.append(originStr.charAt(random.nextInt(originStr.length())));
        }
        //内存Session中存储动态口令
        ActionUtil.getSession().setAttribute("fontDynamicCode", sb.toString());
        return new Response().set(1,sb.toString());
    }

}