<?php

namespace App\Http\Controllers\Frontend;

use App\Http\Controllers\Controller;
use Illuminate\Http\Request;
use App\Models\User;
use Carbon\Carbon;
use Validator;
use Mail;
use App\Mail\OtpMail;
use Illuminate\Support\Facades\Hash;
use Illuminate\Support\Facades\Auth;
use Illuminate\Support\Facades\Session;


class LoginController extends Controller
{

    public function index()
    {
        return view('Frontend.Pages.login');
    }

    public function register()
    {
        return view('Frontend.Pages.register');
    }

    public function registerInvestor()
    {
        return view('Frontend.Pages.register-investor');
    }

    public function registerAssetManagers()
    {
        return view('Frontend.Pages.register-asset-managers');
    }

    public function registerIntermediaries()
    {
        return view('Frontend.Pages.register-intermediaries');
    }

    public function registerOtp()
    {
        return view('Frontend.Pages.register_otp');
    }

    public function forgetPassword(){
        return view('Frontend.Pages.forget_password_request');
    }

    public function resetPassword(){
        return view('Frontend.Pages.forget_password');
    }

    // login method with mobile
    public function login_by_mobile(Request $request)
    {
        // validating data
        $validator = Validator::make($request->all(), [
            'contact_number' => 'required|exists:users,contact_number|min:10|max:10',
            'g-recaptcha-response' => 'sometimes|required'
        ], [
            'required' => 'The :attribute field is required',
            'exists' => 'Contact Number is not registered!',
            'min' => 'Contact Number should be 10 digits!',
            'max' => 'Contact Number should be 10 digits!',
            'g-recaptcha-response.required' => 'Please verify captcha!'
        ]);

        $validationMessage = $this->validationError($validator);
        if ($validationMessage) {
            return response()->json(['status' => 400, 'message' => $validationMessage], 400);
        }

        // $user = User::where('contact_number', $request->contact_number)->first();
        $user = User::where(['contact_number'=>$request->contact_number,'role'=>0])->first();
        if(!$user)
        {
            return response()->json(['status'=>201,'error'=>"Contact number not exist"]);
        }

        $contactNumber = [
            'contact_number' => $request->contact_number,
        ];
        Session::forget('phone_for_otp');
        Session::put('phone_for_otp', $contactNumber);

        $otp = rand(1000, 9999);
        $sendOtp = $this->thirdPartyOTP($user->contact_number, $otp);

        if ($sendOtp) {
            $user->otp = $otp;
            $user->expire_at = Carbon::now('Asia/colombo')->addMinutes(2);
            $user->update();
            return response()->json(['message' => 'OTP has been sent to phone', 'status' => 200]);
        } else {
            return response()->json(['message' => 'Error Sending OTP', 'status' => 400], 400);
        }
    }
    // otp verification in login by mobile
    public function verify_mobile_otp(Request $request)
    {
        // validating data
        $validator = Validator::make($request->all(), [
            // 'user_id' => 'required',
            'otp' => 'required'
        ]);

        // validation fail handling
        if ($validator->fails()) {
            return response()->json(['error' => $validator->errors(), 'status' => 204],204);
        }

        $otp = $request->otp;

        $contactNumber = Session::get('phone_for_otp');
        // validating otp
        $user = User::where('contact_number', $contactNumber['contact_number'])->first();

        // otp verification failed handling
        $current_time = Carbon::now('Asia/colombo');
        if ($otp !== $user->otp) {
            return response()->json(['error' => 'Your OTP is not correct', 'status' => 400],400);
        } elseif ($current_time && $current_time->isAfter($user->expire_at)) {
            return response()->json(['error' => 'Your OTP has been expired', 'status' => 400],400);
        }

        // Session::forget('phone_for_otp');

        // $otp->otp = null;
        // $otp->expire_at = null;
        // $otp->update();
        \Auth::guard('users')->login($user);

        return response()->json([
            'status' => 200,
            'user_id' => $user->id,
            'message' => 'logged in successfully',
            'token' => $user->createToken("API TOKEN")->plainTextToken
        ], 200);
    }

    // otp verification for password change
    public function verify_reset_password_otp(Request $request)
    {
        // dd($request->all());
        // validating data
        $validator = Validator::make($request->all(), [
            // 'user_id' => 'required|exists:users,id',
            'otp' => 'required',
        ]);

        // validation fail handling
        if ($validator->fails()) {
            return response()->json(['error' => 'Invalid request', 'status' => 204]);
        }

        // validating otp
        $otp = User::where('id', $request->user_id)->first();

        // otp verification failed handling
        $current_time = Carbon::now('Asia/colombo');
        if ($otp->otp != $request->otp) {
            return response()->json(['error' => 'Your OTP is not correct', 'status' => 400]);
        } elseif ($otp && $current_time->isAfter($otp->expire_at)) {
            return response()->json(['error' => 'Your OTP has been expired', 'status' => 400]);
        }

        // $otp->otp = null;
        // $otp->expire_at = null;
        // $otp->update();

        return response()->json(['message' => 'Otp verified successfully', 'status' => 200]);
    }

    // login with email and password
    public function loginByEmail(Request $request)
    {
        // validating data
        $validator = Validator::make($request->all(), [
            'email' => 'required|exists:users,email',
            'password' => 'required|min:8',
            'g-recaptcha-response' => 'sometimes|required'
        ], [
            'required' => 'The :attribute field is required',
            'unique' => 'The :attribute field should be unique',
            'exists' => 'Email is not registered!',
            'g-recaptcha-response.required' => 'Please verify captcha!'
        ]);

        $validationMessage = $this->validationError($validator);
        if ($validationMessage) {
            return response()->json(['status' => 400, 'message' => $validationMessage]);
        }

        // handling validation error
        // if ($validator->fails()) 
        // { 
        //     return response()->json(['error'=>'Email is not registered', 'status' => 204]);
        // }

        if (!Auth::guard('users')->attempt($request->only(['email', 'password']))) {
            return response()->json([
                'status' => 400,
                'message' => 'Credentials does not match!',
            ]);
        }

        $user = User::where(['email'=>$request->email,'role'=>0])->first();
        if(!$user)
        {
            return response()->json(['status'=>400,'message'=>"Credentials does not match!"]);
        }

        return response()->json([
            'status' => 200,
            'user_id' => $user->id,
            'message' => 'Logged in successfully',
            'token' => $user->createToken("API TOKEN")->plainTextToken
        ], 200);
    }

    // forget password by email or phone
    public function forget_password(Request $request)
    {
        // checking input is email or phone
        $loginWith = filter_var($request->emailorphone, FILTER_VALIDATE_EMAIL) ? 'email' : 'contact_number';

        // validating data
        $validator = Validator::make(
            $request->all(),
            [
                'emailorphone' => "required|exists:users,$loginWith",
            ]
        );

        // handling validation error
        if ($validator->fails()) {
            
            // $errorName = $loginWith == 'email' ? 'email' : 'contact number';
            // $errorName = is_int($request->emailorphone) ? 'contact number' : 'email';
            // return response()->json(['error' => $errorName . " is not registered", 'status' => 204]);
            return response()->json(['error' => "Enter valid credential", 'status' => 204]);
        }

        // checking user exits or not
        if ($loginWith == 'contact_number') {
            try {
                $otp = $this->otpGenerate($request->email);
                $sendOTP = $this->thirdPartyOTP($request->emailorphone,$otp);
                $user = User::where('contact_number', $request->emailorphone)->first();
                // dd($user->id);
                Session::forget('phone_email_forgot');
                Session::put('phone_email_forgot', $request->emailorphone);
                $user->otp = $otp;
                $user->expire_at = Carbon::now('Asia/colombo')->addMinutes(2);
                $user->update();
                // Session::forget('user_id');
                // Session::put('user_id', $user->id);
                return response()->json(['user_id' => $user->id, 'status' => 200]);
            } catch (\Exception $e) {
                return response()->json(['error' => 'Netwrok Error! Please try again after sometime.', 'status' => 500]);
            }
        } else {
            try {
                $otp = $this->otpGenerate($request->emailorphone);
                $mailData = [
                    'title' => 'Mail from Freeu.in',
                    'body' => 'This is for testing email using smtp.'
                ];
                // $otp = $this->otpGenerate($request->email);
                Mail::to($request->emailorphone)->send(new OtpMail($mailData, $otp));
                $user = User::where('email', $request->emailorphone)->first();
                // dd($user);
                Session::forget('phone_email_forgot');
                Session::put('phone_email_forgot', $request->emailorphone);
                $user->otp = $otp;
                $user->expire_at = Carbon::now('Asia/colombo')->addMinutes(2);
                $user->update();
                // Session::forget('user_id');
                // Session::put('user_id', $user->id);
                return response()->json(['user_id' => $user->id, 'status' => 200]);
            } catch (\Exception $e) {
                return response()->json(['error' => 'Netwrok Error! Please try again after sometime.', 'status' => 500]);
            }
        }
    }

    // update password with otp
    public function update_password(Request $request)
    {
        // validating data
        $validator = Validator::make($request->all(), [
            // 'user_id' => 'required|exists:users,id',
            'password' => 'required|confirmed|min:8',
            'otp' => 'required'
        ]);

        // handling validation error 
        if ($validator->fails()) {
            // dd($validator->errors());
            return response()->json(['error' => $validator->errors(), 'status' => 204]);
        }
        
        
        $phoneOrEmail = Session::get('phone_email_forgot');
        
        // $checkOtp = User::where(['email'=>$phoneOrEmail,'otp'=>$request->otp])->orWhere(['email'=>$phoneOrEmail,'otp'=>$request->otp])
        // $user = User::where('contact_number', $phoneOrEmail)->orWhere('email',$phoneOrEmail)->first();
        // $user = User::where(['contact_number'=>$phoneOrEmail,'otp'=>$request->otp])->orWhere(['email'=>$phoneOrEmail,'otp'=>$request->otp])->first();
        // $user = User::where('id', $request->user_id)->where('otp', $request->otp)->first();
        
        $user = User::where('otp','=',$request->otp)
                ->where( function ($query) use ($phoneOrEmail){
                    return $query
                        ->where('contact_number','=',$phoneOrEmail)
                        ->orWhere('email','=',$phoneOrEmail);
                })
                ->first();
                
        $current_time = Carbon::now('Asia/colombo');
        if (!$user) {
            return response()->json(['error' => 'Your OTP is not correct', 'status' => 400]);
        }
        elseif ($user && $current_time->isAfter($user->expire_at)) {
            return response()->json(['error' => 'Your OTP has been expired', 'status' => 400]);
        } else {
            try {
                $user->password = Hash::make($request->password);
                $user->update();

                return response()->json(['message' => 'Password has been updated successfully', 'status' => 200]);
            } catch (\Exception $e) {
                return response()->json(['error' => 'Netwrok Error! Please try again after sometime.', 'status' => 500]);
            }
        }
    }

    // resend otp while login
    public function request_otp(Request $request)
    {

        $validator = Validator::make(
            $request->all(),
            [
                // 'user_id' => 'required|exists:users,id',
            ]
        );

        if ($validator->fails()) {
            return response()->json(['error' => $validator->errors()], 204);
        }

        $contactNumber = Session::get('phone_for_otp');
        $user = User::where('contact_number', $contactNumber['contact_number'])->first();
        $otp = rand(1000, 9999);
        $sendOTP = $this->thirdPartyOTP($user->contact_number, $otp);

        try {
            if ($sendOTP) {
                $user->otp = $otp;
                $user->expire_at = Carbon::now('Asia/colombo')->addMinutes(2);
                $user->update();

                return response()->json(['message' => 'otp send successfully on your registered phone number - ' . $user->contact_number . ' and email - ' . $user->email, 'status' => 200]);
            }
        } catch (\Exception $e) {
            return response()->json(['error' => 'Netwrok Error! Please try again after sometime.', 'status' => 500]);
        }
    }

    public function signOut()
    {
        \Session::flush();
        \Auth::guard('users')->logout();
        // return redirect()->route('admin.login');
        return redirect()->back();
    }

    public function validationError($validator)
    {
        if ($validator->fails()) {
            $errors = $validator->errors();
            $messages = '';
            foreach ($errors->all() as $message) {
                $messages .= $message . '</br>';
            }
            return $messages;
        }
    }

    public function otpGenerate($email)
    {
        $otp = rand(1000, 9999);
        return $otp;
    }

    public function thirdPartyOTP($number, $otp)
    {
        $curl = curl_init();

        curl_setopt_array($curl, array(
            CURLOPT_URL => 'https://restapi.smscountry.com/v0.1/Accounts/4F7T5SbGyV7HBrEHxmX4/SMSes/',
            CURLOPT_RETURNTRANSFER => true,
            CURLOPT_ENCODING => '',
            CURLOPT_MAXREDIRS => 10,
            CURLOPT_TIMEOUT => 0,
            CURLOPT_FOLLOWLOCATION => true,
            CURLOPT_HTTP_VERSION => CURL_HTTP_VERSION_1_1,
            CURLOPT_CUSTOMREQUEST => 'POST',
            CURLOPT_POSTFIELDS => '{
    "Text": "Dear Investor, Your login OTP is ' . $otp . '. - Blue Feather Ventures Pvt Ltd.",
    "Number": "91' . $number . '",
    "SenderId": "BLUFVL",
    "DRNotifyUrl": "https://www.domainname.com/notifyurl",
    "DRNotifyHttpMethod": "POST",
    "Tool": "API"
    }',
            CURLOPT_HTTPHEADER => array(
                'Content-Type: application/json',
                'Authorization: Basic NEY3VDVTYkd5VjdIQnJFSHhtWDQ6emFXdFEyTlV3ZlZROHB6dGRvVlRZUFdibG01Y1AxRldsbWl2WlVrbg=='
            ),
        ));

        $response = curl_exec($curl);

        curl_close($curl);
        return $response;
        // return true;
    }
    
    public function searchEmail(Request $request)
    {
        $email = $request->email;
        // dd($email);
        $user = User::where('email',$email)->exists();
        if(!$user)
        {
            return response()->json(
                [
                    "status"=>201,
                    "message"=>"Please enter valid email",
                ]
                );
        }
        else
        {
            return response()->json(
                [
                    "status"=>200,
                    // "message"=>"Email is invalid !, Please enter valid email",
                ]
                );
        }
    }
}