package com.beifan.foxlibc.modules.controller;

import com.beifan.foxlibc.framework.utils.Assert;
import com.beifan.foxlibc.framework.utils.JvmCache;
import com.beifan.foxlibc.framework.utils.R;
import com.beifan.foxlibc.framework.utils.StringUtils;
import com.beifan.foxlibc.framework.utils.generator.UniqueUtils;
import com.beifan.foxlibc.framework.utils.generator.VerifyCodes;
import com.beifan.foxlibc.framework.utils.security.DoubleCoder;
import com.beifan.foxlibc.framework.utils.time.DateUtils;
import com.beifan.foxlibc.framework.utils.time.TimeUnits;
import com.beifan.foxlibc.modules.configuration.NV_TOKEN;
import com.beifan.foxlibc.modules.pojo.model.SystemSet;
import com.beifan.foxlibc.modules.pojo.model.User;
import com.beifan.foxlibc.modules.pojo.model.UserLogininfo;
import com.beifan.foxlibc.modules.pojo.webio.MakeVerificationCodeIn;
import com.beifan.foxlibc.modules.pojo.webio.ResetPasswdIn;
import com.beifan.foxlibc.modules.pojo.webio.ResetSecPasswdIn;
import com.beifan.foxlibc.modules.pojo.webio.io.AuthenticationCodeIn;
import com.beifan.foxlibc.modules.pojo.webio.io.AuthenticationOut;
import com.beifan.foxlibc.modules.pojo.webio.io.AuthenticationSecUserIn;
import com.beifan.foxlibc.modules.pojo.webio.io.AuthenticationUserIn;
import com.beifan.foxlibc.modules.service.UserOperateService;
import com.beifan.foxlibc.modules.service.UserService;
import lombok.extern.slf4j.Slf4j;
import org.springframework.beans.factory.annotation.Autowired;
import org.springframework.beans.factory.annotation.Value;
import org.springframework.web.bind.annotation.PostMapping;
import org.springframework.web.bind.annotation.RequestBody;
import org.springframework.web.bind.annotation.RequestHeader;
import org.springframework.web.bind.annotation.RestController;

import javax.validation.Valid;
import java.util.Date;
import java.util.Map;
import java.util.Objects;
import java.util.regex.Pattern;

/**
 * 认证服务：登录/code生成/解析/验证
 *
 * @author lts
 */
@RestController
@Slf4j
public class AuthenticationController {

    @Autowired
    private UserService userService;
    @Autowired
    private UserOperateService userOperateService;

//    @Value("${foxlibc.debug}") private boolean __DEBUG__;

    @Value("${foxlibc.mlogin:false}")
    private boolean __M_LOGIN__;

    /**
     * 缓存
     */
    private final JvmCache jvmCache = new JvmCache();

    /* 密码校验规则 */
    static String PWD_VALID_RGX =
            "^(?=.*[0-9])(?=.*[a-z])(?=.*[A-Z])(?=.*[`!@#$%^&*()_+{}\":?><,./';\\[\\]=-\\\\|])(?=\\S+$).{8,20}$";


    /**
     * 生成appToken
     */
    @NV_TOKEN
    @PostMapping("/application-token")
    public R<AuthenticationOut> applicationToken(@Valid @RequestBody AuthenticationCodeIn authenticationCodeIn) {
        Assert.throwIfBool(userService.application(authenticationCodeIn.getAppid(), authenticationCodeIn.getAppSecret()),
                "appid或app secret不正确");

//        authenticationService.useEnv(JwtConst.APP);
//        String appToken = authenticationService.createToken(Maps.ofMap(JwtConst.APP, authenticationCodeIn.getAppid()));

        String appToken = UniqueUtils.uuid().toLowerCase();
        Date expireTime = DateUtils.plus(new Date(), 1, TimeUnits.DAYS);

        /* 记录登录信息 */
//         Date expireTime = authenticationService.getExpireTime(appToken);
        String appid = authenticationCodeIn.getAppid();
        UserLogininfo userLogininfo = new UserLogininfo(appid, null, expireTime, appToken, null, null, null);
        userService.saveUserLogininfo(userLogininfo);
        SystemSet systemSet = userService.systemSetting();
        Boolean verificationCode = systemSet.getVerificationCode();

        return R.ok(
                "appToken", appToken,
                "expireTime", DateUtils.format(expireTime),
                "verificationCode", verificationCode
        );
    }

    /**
     * 验证token
     */
    @NV_TOKEN
    @PostMapping("/valid/token")
    public R<AuthenticationOut> validToken(@RequestHeader Map<String, String> headers) {
        String token = headers.get("authorization");
        String authId = headers.get("authid");
        /*   WRAN: 异常信息中的 -C401 是指定返回Code。
           如果删除了前端将不能通过 401 判断用户是否过期 */
        // Assert.throwIfBool(!jvmCache.contains(CacheConst.TOKEN_BLACKLIST(code)), "-C401 TOKEN已被禁用");

        /* 如果验证失败，抛出异常 */
        // Assert.throwIfBool(authenticationService.validate(code), "-C401 TOKEN已过期");

        UserLogininfo userLogininfo = userService.queryUserLogininfo(token);
        Date expireTime = userLogininfo.getExpireTime();

        Assert.throwIfBool(!DateUtils.gteq(new Date(), expireTime), "-C401 TOKEN已过期");
        if (Objects.nonNull(authId)) {
            userOperateService.operateLog(userLogininfo.getUserId(), authId);
        }

        return R.ok();
    }

    /**
     * 生成验证码
     */
    @NV_TOKEN
    @PostMapping("/verification-code")
    public R<String> verificationCode(@Valid @RequestBody MakeVerificationCodeIn makeVerificationCodeIn) {
        String code;
        SystemSet systemSet = userService.systemSetting();

        int vlen = Integer.parseInt(systemSet.getVerificationCodeLength());

        /* true 只有数字，false 数字加字符 */
        if (SystemSet.ONLY_NUMBER.equals(systemSet.getVerificationCodeType())) {
            code = VerifyCodes.randomSimpleVerifyCode(vlen);
        } else {
            code = VerifyCodes.randomComplexVerifyCode(vlen);
        }
        Date codeExpireTime = DateUtils.plus(new Date(), 60, TimeUnits.SECONDS);

        // jvmCache.set(CacheConst.VERIFICATION_CODE(makeVerificationCodeIn.getAppToken()), code, (60 * 3));
        String appToken = makeVerificationCodeIn.getAppToken();
        UserLogininfo userLogininfo = userService.queryUserLogininfo(appToken);
        userLogininfo.setVerificationCode(code);
        userLogininfo.setCodeExpireTime(codeExpireTime);

        userService.updateUserLogininfo(userLogininfo, appToken);

        return R.ok(code);
    }

    /**
     * 用户登录
     */
    @NV_TOKEN
    @PostMapping("/sign-in")
    public R<AuthenticationOut> signin(@RequestHeader("Authorization") String appToken, @Valid @RequestBody AuthenticationUserIn authenticationUserIn) {
        // String sessionid = getSessionId();
        String username = authenticationUserIn.getUsername();
        SystemSet systemSet = userService.systemSetting();

        /* 验证码校验 */
        // String verificationCode = jvmCache.get(CacheConst.VERIFICATION_CODE(appToken));

        UserLogininfo userLogininfo = userService.queryUserLogininfo(appToken);
        if (systemSet.getVerificationCode()) {
            String verificationCode = userLogininfo.getVerificationCode();
            Assert.throwIfBool(verificationCode != null && verificationCode.equals(authenticationUserIn.getVerificationCode()), "验证码错误");
            boolean isCheckFull = systemSet.getVerificationCodeAa() ?
                    Objects.equals(verificationCode, authenticationUserIn.getVerificationCode()) :
                    Objects.equals(verificationCode.toLowerCase(), authenticationUserIn.getVerificationCode().toLowerCase());
            Assert.throwIfBool(isCheckFull, "验证码不正确");
            Date codeExpireTime = userLogininfo.getCodeExpireTime();
            Assert.throwIfBool(!DateUtils.gteq(new Date(), codeExpireTime), "-C401 验证码已过期");
        }

//        查询用户
        User u = userService.queryUserByUsername(username);

        Assert.throwIfBool(!"0".equals(u.getUserStatus()), "当前用户状态已被禁用, 不允许登录");

        String userid;
        try {
            /* 验证用户名密码是否可以登录 */
            userid = userService.sign(username, authenticationUserIn.getPassword());
//            验证成功则清零失败次数
            userService.updateFailCount(username, 0);
        } catch (Exception e) {
//            验证失败 更新失败次数
            if (u.getFailCount() < 4) {
                userService.updateFailCount(username, u.getFailCount() + 1);
            } else {
//                超过次数则禁用用户，并且错误次数重置为0
                userService.updateStatus(username, "0");
                userService.updateFailCount(username, 0);
            }
//            并且抛出异常
            throw e;
        }


        /* 生成token */
//        authenticationService.useEnv(JwtConst.USR);
//        String token = authenticationService.createToken(Maps.ofMap(JwtConst.USR_ID, userid));
//        Date tokenDate = authenticationService.getExpireTime(token);

        String token = UniqueUtils.uuid().toLowerCase();
        Date tokenDate = DateUtils.plus(new Date(), 1, TimeUnits.DAYS);

        UserLogininfo appLoginInfo = userService.queryUserLogininfo(appToken);
        appLoginInfo.setVerificationCode(null);
        appLoginInfo.setCodeExpireTime(null);
        appLoginInfo.setUserId(userid);
        appLoginInfo.setToken(token);
        appLoginInfo.setExpireTime(tokenDate);

        /* 如果不允许其他地方登陆的话，删除其他地方登录过的缓存 */
        if (Boolean.FALSE.equals(systemSet.getAllowMultipleMachineLogins())) {
            userService.deleteUserLogininfoByUserId(userid);
        }

        /* 保存登录信息 */
        userService.updateUserLogininfo(appLoginInfo, appToken);

        return R.ok(
                "token", token,
                "userid", userid,
                "date", tokenDate
        );
    }

    /**
     * 刷新token
     */
    @PostMapping("/flush-token")
    public R<Void> flushToken(@RequestHeader("Authorization") String token) {
        // String sessionid = getSessionId();
//        String env = authenticationService.getEnv(token);

        UserLogininfo userLogininfo = userService.queryUserLogininfo(token);
        Date expireTime = DateUtils.plus(new Date(), 1, TimeUnits.DAYS);
        userLogininfo.setExpireTime(expireTime);
        userService.updateUserLogininfo(userLogininfo, token);

        return R.ok("expireTime", DateUtils.format(expireTime));
    }

    /**
     * 退出登录
     */
    @PostMapping("/sign-out")
    public R<Void> signout(@RequestHeader("Authorization") String token) {
        /* 添加到黑名单 */
//        Date expireTime = authenticationService.getExpireTime(token);
//        jvmCache.set(CacheConst.TOKEN_BLACKLIST(token), 0, expireTime);

        /* 删除登录日志中的数据 */
        userService.deleteUserLogininfoByToken(token);

        return R.ok();
    }

    /**
     * 获取系统设置
     */
    @PostMapping("/system/setting")
    public R<SystemSet> systemSet() {
        return R.ok(userService.systemSetting());
    }


    /**
     * 用户登录
     */
    @NV_TOKEN
    @PostMapping("/sec-sign-in")
    public R<AuthenticationOut> secsignin(@Valid @RequestBody AuthenticationSecUserIn authenticationUserIn) {
        String userId = authenticationUserIn.getUserId();
        SystemSet systemSet = userService.systemSetting();

        UserLogininfo userLogininfos = userService.queryUserLogininfosByUserIdPS(userId);
        if (systemSet.getVerificationCode()) {
            String verificationCode = userLogininfos.getVerificationCode();
            Assert.throwIfBool(verificationCode != null && verificationCode.equals(authenticationUserIn.getVerificationCode()), "验证码错误");
            boolean isCheckFull = systemSet.getVerificationCodeAa() ?
                    Objects.equals(verificationCode, authenticationUserIn.getVerificationCode()) :
                    Objects.equals(verificationCode.toLowerCase(), authenticationUserIn.getVerificationCode().toLowerCase());
            Assert.throwIfBool(isCheckFull, "验证码不正确");
            Date codeExpireTime = userLogininfos.getCodeExpireTime();
            Assert.throwIfBool(!DateUtils.gteq(new Date(), codeExpireTime), "-C401 验证码已过期");
        }



        /* 验证用户名密码是否可以登录 */
        String userid = userService.secsign(userId, authenticationUserIn.getPassword());

        return R.ok(
                "userid", userid
        );
    }

//    /**
//     * 获取系统设置
//     */
//    @PostMapping("/authQuery")
//    public R<SystemSet> authQuery(@RequestHeader("Authorization") String token)
//    {
//        String userid = authenticationService.claimsValue(token, JwtConst.USR_ID);
//        return R.ok(userService.authQuery(userid));
//    }
//

    /**
     * 修改用户密码
     */
    @PostMapping("/reset-passwd")
    public R<Void> resetPasswd(@Valid @RequestBody ResetPasswdIn resetPasswdIn) {
        String userid = userService.idsign(resetPasswdIn.getUserId(), resetPasswdIn.getOriginPassword());
        SystemSet systemSet = userService.systemSetting();
        String pwdMatch = systemSet.getPwdCons();

        /* 修改密码 */
        User user = userService.userQuery(userid);
        user.setUserPwd(resetPasswdIn.getNewPassword());

        Assert.throwIfBool(Pattern.matches(pwdMatch, user.getUserPwd()), "密码不符合规则");
        String pwd = StringUtils.toLowerCase(DoubleCoder.MD5(resetPasswdIn.getNewPassword()));

        userService.updateUserPwd(userid, pwd);

        return R.ok();
    }

    /**
     * 修改用户密码
     */
    @PostMapping("/reset-secpasswd")
    public R<Void> resetSecPasswd(@Valid @RequestBody ResetSecPasswdIn resetPasswdIn) {
        String userid = resetPasswdIn.getUserId();

        /* 修改密码 */
        User user = userService.userQuery(userid);
        user.setUserPwd(resetPasswdIn.getNewPassword());
        SystemSet systemSet = userService.systemSetting();
        String pwdMatch = systemSet.getPwdCons();
        Assert.throwIfBool(Pattern.matches(pwdMatch, user.getUserPwd()), "密码不符合规则");
        String pwd = StringUtils.toLowerCase(DoubleCoder.MD5(resetPasswdIn.getNewPassword()));

        userService.updateUserSecPwd(userid, pwd);

        return R.ok();
    }

    // private String getSessionId() { return WebRequests.getHttpServletRequest().getSession().getId(); }

}