<?php

namespace App\Http\Controllers\Traits;

use Illuminate\Foundation\Auth\RedirectsUsers;
use Illuminate\Foundation\Auth\ThrottlesLogins;
use Illuminate\Http\Request;
use Illuminate\Support\Facades\Auth;

trait AuthUserTrait
{
    use RedirectsUsers, ThrottlesLogins;

    /**
     * Show the application's login form.
     *
     * @return \Illuminate\Http\Response
     */
    public function showLoginForm()
    {
        config()->set(['admin'=>['title'=>'后台登陆']]);
        return view('auth.login');
    }

    /**
     * Handle a login request to the application.
     *
     * @param  \Illuminate\Http\Request  $request
     * @return \Illuminate\Http\RedirectResponse|\Illuminate\Http\Response
     */
    public function login(Request $request)
    {
        $this->validateLogin($request);

        // 验证码验证
        $captcha = captcha_check($request->input('captcha'));

        // 验证失败
        if( !$captcha ){
            return redirect()->back()
                ->withInput($request->only($this->username(), 'remember'))
                ->withErrors(['captcha'=>'验证错误']);
        }

        // If the class is using the ThrottlesLogins trait, we can automatically throttle
        // the login attempts for this application. We'll key this by the username and
        // the IP address of the client making these requests into this application.
        if ($this->hasTooManyLoginAttempts($request)) {
            $this->fireLockoutEvent($request);

            return $this->sendLockoutResponse($request);
        }

        if ($this->attemptLogin($request)) {
//            $request->setTrustedProxies(array('10.32.0.1/16'));
//            $ip = $request->getClientIp();
//            // 记录登录信息
//            file_put_contents(
//                storage_path('logs/auth-login.txt'),
//                "登录时间：".(date('Y-m-d H:i:s'))." 登录IP：{$ip}"."\r\n", FILE_APPEND
//            );
            return $this->sendLoginResponse($request);
        }

        // If the login attempt was unsuccessful we will increment the number of attempts
        // to login and redirect the user back to the login form. Of course, when this
        // user surpasses their maximum number of attempts they will get locked out.
        $this->incrementLoginAttempts($request);

        return $this->sendFailedLoginResponse($request);
    }

    /**
     * Validate the user login request.
     *
     * @param  \Illuminate\Http\Request  $request
     * @return void
     */
    protected function validateLogin(Request $request)
    {
        $this->validate($request, [
            $this->username() => 'required|string',
            'password' => 'required|string',
            'captcha' => 'required|string',
        ],[
            'required' => '必填'
//            $this->username().'.required' => '必填',
//            'password.required' => '必填',
//            'captcha.required' => '必填'
        ]);
    }

    /**
     * Attempt to log the user into the application.
     *
     * @param  \Illuminate\Http\Request  $request
     * @return bool
     */
    protected function attemptLogin(Request $request)
    {
        return $this->guard()->attempt(
            $this->credentials($request), $request->has('remember')
        );
    }

    /**
     * Get the needed authorization credentials from the request.
     *
     * @param  \Illuminate\Http\Request  $request
     * @return array
     */
    protected function credentials(Request $request)
    {
        return $request->only($this->username(), 'password');
    }

    /**
     * Send the response after the user was authenticated.
     *
     * @param  \Illuminate\Http\Request  $request
     * @return \Illuminate\Http\Response
     */
    protected function sendLoginResponse(Request $request)
    {
        $request->session()->regenerate();

        $this->clearLoginAttempts($request);

        return $this->authenticated($request, $this->guard()->user())
            ?: redirect()->intended($this->redirectPath());
    }

    /**
     * The user has been authenticated.
     *
     * @param  \Illuminate\Http\Request  $request
     * @param  mixed  $user
     * @return mixed
     */
    protected function authenticated(Request $request, $user)
    {
        //
    }

    /**
     * Get the failed login response instance.
     *
     * @param  \Illuminate\Http\Request  $request
     * @return \Illuminate\Http\RedirectResponse
     */
    protected function sendFailedLoginResponse(Request $request)
    {
//        $errors = [$this->username() => trans('auth.failed')];
        $errors = [$this->username() => '账号或密码错误'];;
        if ($request->expectsJson()) {
            return response()->json($errors, 422);
        }

        return redirect()->back()
            ->withInput($request->only($this->username(), 'remember'))
            ->withErrors($errors);
    }

    /**
     * Get the login username to be used by the controller.
     *
     * @return string
     */
    public function username()
    {
        return 'email';
    }

    /**
     * Log the user out of the application.
     *
     * @param  \Illuminate\Http\Request  $request
     * @return \Illuminate\Http\Response
     */
    public function logout(Request $request)
    {
        $this->guard()->logout();

        $request->session()->flush();

        $request->session()->regenerate();

        return redirect('/admin/login');
    }

    /**
     * Get the guard to be used during authentication.
     *
     * @return \Illuminate\Contracts\Auth\StatefulGuard
     */
    protected function guard()
    {
        return Auth::guard();
    }
}