<form action="/login" method="post">
        <div> <label for="username">Username</label> <input id="username" name="username" type="text"
                        autocomplete="username" required /> </div>
        <div> <label for="current-password">Password</label> <input id="current-password" name="password"
                        type="password" autocomplete="current-password" required /> </div>
        <div> <button type="submit">Sign in</button> </div>
</form>

const express = require("express");
const Redis = require("ioredis");
const session = require("express-session");
const passport = require("passport");
const RedisStore = require("connect-redis")(session);
const LocalStrategy = require("passport-local").Strategy;
const bodyParser = require("body-parser");
const ejs = require("ejs");

const app = express();
app.use(bodyParser.urlencoded());
app.set("views", __dirname + "/views");
app.set("view engine", "ejs");
app.engine("html", ejs.__express);
app.set("view engine", "html");

passport.serializeUser((user, done) => {
  done(null, user.username);
});
passport.deserializeUser(function (username, done) {
  done(null, { username });
});

app.use(
  session({
    name: "ang_server_session",
    secret: "ang test",
    resave: false,
    rolling: true,
    saveUninitialized: false,
    cookie: {
      maxAge: 86400000,
      secure: false,
      httpOnly: true,
      path: "",
      sameSite: "strict",
      domain: "",
    },
    store: new RedisStore({
      client: new Redis({
        host: "114.115.134.189",
        port: 6379,
        db: 10,
        password: "***",
      }),
    }),
  })
);

app.use(passport.initialize());
app.use(passport.session());
passport.use(
  new LocalStrategy(
    { usernameField: "username", passwordField: "password" },
    function (username, password, done) {
      if (username == "ang" && password == "11111") {
        return done(null, { username, password });
      } else {
        return done(null, false, { message: "账户或密码错误" });
      }
    }
  )
);

app.get("/", function (req, res) {
  if (req.isAuthenticated()) {
    res.send(
      "欢迎您!" + req.session.passport.user + "!" + '<a href="logout">登出</a>'
    );
  } else {
    res.send('您好!游客!<a href="login">请登录</a>');
  }
});

app.get("/login", function (req, res) {
  res.render("login");
});

app.post(
  "/login",
  passport.authenticate("local", {
    failureRedirect: "/login",
    failureMessage: true,
  }),
  function (req, res) {
    res.redirect("/");
  }
);

app.get("/logout", function (req, res) {
  req.logout();
  res.redirect("/");
});

const server = app.listen(8081, function () {
  const host = server.address().address;
  const port = server.address().port;
  console.log("应用实例，访问地址为 http://%s:%s", host, port);
});