<?php
namespace App\Controller;

use Cake\Routing\Router;
use Cake\I18n\I18n;
use Cake\I18n\FrozenTime;
use Cake\ORM\TableRegistry;
use Cake\Core\Configure;
use Cake\Http\Client;

use App\Controller\AppController;
use App\Form\UserSearchForm;
use App\Model\Validation\GenericValidation;

use Model\Navigation\NaviHierarchy;
use Model\Navigation\NaviHierarchyEntry;

use Model\Transactions\TransactionCreation;

// for translating
__('account created');
__('account not on login-server');
__('email activated');
__('account copied to community');
__('email not activated');
__('account multiple times on login-server');
__('account not on community server');
__('no keys');

/**
 * StateUsers Controller
 *
 * @property \App\Model\Table\StateUsersTable $StateUsers
 *
 * @method \App\Model\Entity\StateUser[]|\Cake\Datasource\ResultSetInterface paginate($object = null, array $settings = [])
 */
class StateUsersController extends AppController
{

    public function initialize()
    {
        parent::initialize();
        $this->loadComponent('GradidoNumber');
        $this->loadComponent('JsonRequestClient');
        $this->loadComponent('Cookie');
        $this->Auth->allow([
            'search', 'ajaxCopyLoginToCommunity', 'ajaxCopyCommunityToLogin',
            'ajaxDelete', 'ajaxCountTransactions', 'ajaxVerificationEmailResend',
            'ajaxGetUserEmailVerificationCode', 'ajaxGetCSFRToken', 'login'
         ]);
        $this->set(
            'naviHierarchy',
            (new NaviHierarchy())->
            add(new NaviHierarchyEntry(__('Startseite'), 'Dashboard', 'index', false))->add(new NaviHierarchyEntry(__('Benutzer suchen'), 'StateUsers', 'search', true))
        );
    }

    /**
     * Index method
     *
     * @return \Cake\Http\Response|null
     */
    public function index()
    {
        $this->paginate = [
            'contain' => []
        ];
        $stateUsers = $this->paginate($this->StateUsers);

        $this->set(compact('stateUsers'));
    }

    /*public function listIdentHashes()
    {
        $stateUsers = $this->StateUsers->find('all')->toArray();
        foreach($stateUsers as $i => $user) {
          $stateUsers[$i]->identHash = TransactionCreation::DRMakeStringHash($user->email);
        }
        $this->set('stateUsers', $stateUsers);
    }*/
    
    public function login($session_id)
    {
      if(isset($session_id) && intval($session_id) !== 0) {
        $loginServer = Configure::read('LoginServer');
        $http = new Client();

        try {
            $url = $loginServer['host'] . ':' . $loginServer['port'];

            $response = $http->get($url . '/login', ['session_id' => $session_id]);
            $json = $response->getJson();

            if (isset($json) && count($json) > 0) {
                if ($json['state'] === 'success') {
                  $this->Cookie->configKey('GRADIDO_LOGIN', 'encryption', false);
                  $this->Cookie->write('GRADIDO_LOGIN', $session_id);
                  return $this->redirect(['controller' => 'Dashboard', 'action' => 'index']);
                }   
            }
        } catch (\Exception $e) {
            $msg = $e->getMessage();
            $this->Flash->error(__('error http request: ') . $msg);
            return $this->redirect(['controller' => 'Dashboard', 'action' => 'errorHttpRequest']);
        }
      }
      throw new NotFoundException();
    }

    public function search()
    {
        $startTime = microtime(true);
        I18n::setLocale('de_DE');
        $this->viewBuilder()->setLayout('frontend');
        $session = $this->getRequest()->getSession();
        $result = $this->requestLogin();
        if($result !== true) {
          return $result;
        }
        $user = $session->read('StateUser');
        if($user['role'] != 'admin') {
          return $this->redirect(['controller' => 'dashboard', 'action' => 'index']);
        }

        $searchForm = new UserSearchForm();

        $timeUsed = microtime(true) - $startTime;
        //$this->set('timeUsed', $timeUsed);
        $csfr_token = $this->request->getParam('_csrfToken');
        $this->set(compact('timeUsed', 'searchForm', 'csfr_token'));
        $empty_string = '... empty ...';
        if ($this->request->is('post')) {
            $finalUserEntrys = [];
          $requestData = $this->request->getData();
            $account_state = $requestData['account_state'];
            if($requestData['search'] == '' && $account_state != 'all') {
                $requestData['search'] = $empty_string;
            }

          if($searchForm->validate($requestData)) {
            //var_dump($requestData);
            $searchString = $requestData['search'];
            $searchType = 'unknown';
            if(GenericValidation::email($searchString, [])) {
              $searchType = 'email';
            }
            // find users on login server
                $resultJson = $this->JsonRequestClient->getUsers($session->read('session_id'), $searchString, $account_state);
            $loginServerUser = [];
            if($resultJson['state'] == 'success') {
              $dataJson = $resultJson['data'];
              if($dataJson['state'] != 'success') {
                  if($dataJson['msg'] == 'session not found') {
                    $session->destroy();
                    return $this->redirect(Router::url('/', true) . 'account', 303);
                  }
              }
              //var_dump($dataJson);
              if(isset($dataJson['users'])) {
                $loginServerUser = $dataJson['users'];
              }
            }
            $pubkeySorted = [];
            $emptyPubkeys = [];
            foreach($loginServerUser as $u) {
              if(!isset($u['public_hex']) || $u['public_hex'] == '') {
                array_push($emptyPubkeys, $u);
              } else {
                if(!isset($pubkeySorted[$u['public_hex']])) {
                  $pubkeySorted[$u['public_hex']] = ['login' => [], 'community' => []];
                }
                array_push($pubkeySorted[$u['public_hex']]['login'], $u);
              }
            }
            // find user on community server db
                
                
            $communityUsers = $this->StateUsers
                    ->find('all')
                    ->contain(['StateBalances' => ['fields' => ['amount', 'state_user_id']]]);

                if($account_state == 'email not activated') {
                    if(count($pubkeySorted) > 0) {
                        $communityUsers->where(['hex(public_key) IN' => array_keys($pubkeySorted)]);
                    } else {
                        $communityUsers = null;
                    }
                } else {
                    $globalSearch = '%' . $searchString . '%';
            $communityUsers->where(['OR' => [
                  'first_name LIKE' => $globalSearch,
                  'last_name  LIKE' => $globalSearch,
                  'email      LIKE' => $globalSearch
            ]]);
                }

               
            //var_dump($communityUsers->toArray());
                if($communityUsers) {
            foreach($communityUsers as $u) {
              $pubkey_hex = bin2hex(stream_get_contents($u->public_key));
              $u->public_hex = $pubkey_hex;
              if(!isset($pubkeySorted[$pubkey_hex])) {
                $pubkeySorted[$pubkey_hex] = ['login' => [], 'community' => []];
              }
              array_push($pubkeySorted[$pubkey_hex]['community'], $u);
            }
                }
                
            // detect states
            foreach($pubkeySorted as $pubhex => $user) {
              $finalUser = [];
              $state = 'account created';
              $color = 'secondary';
              $finalUser['balance'] = 0;
              $finalUser['pubkeyhex'] = $pubhex;
              $finalUser['created'] = null;

              if(count($user['community']) == 1) {
                if(isset($user['community'][0]->state_balances) &&
                   isset($user['community'][0]->state_balances[0]['amount'])) {
                   $finalUser['balance'] = $user['community'][0]->state_balances[0]->amount;
                }
              }

              if(count($user['login']) == 0) {
                $state = 'account not on login-server';
                $color = 'danger';
                if(count($user['community']) == 1) {
                  $c_user = $user['community'][0];
                  $finalUser['name'] = $c_user->first_name . ' ' . $c_user->last_name;
                  $finalUser['first_name'] = $c_user->first_name;
                  $finalUser['last_name'] = $c_user->last_name;
                  $finalUser['email'] = $c_user->email;
                }
              } else if(count($user['login']) == 1) {
                if($user['login'][0]['email_checked'] == true) {
                  $state = 'email activated';
                  $color = 'primary';
                  
                  if(count($user['community']) == 1) {
                    $state = 'account copied to community';
                    $color = 'success';
                    //var_dump($user['community'][0]->state_balances[0]['amount']);
                  }

                } else {
                  $state = 'email not activated';
                  $color = 'warning';
                }
                
                $l_user = $user['login'][0];
                $finalUser['name'] = $l_user['first_name'] . ' ' . $l_user['last_name'];
                $finalUser['first_name'] = $l_user['first_name'];
                $finalUser['last_name'] = $l_user['last_name'];
                $finalUser['email'] = $l_user['email'];
                $finalUser['created'] =  new FrozenTime($l_user['created']);
                  
              } else {
                $state = 'account multiple times on login-server';
                $color = 'danger';
              }
              $finalUser['indicator'] = ['name' => $state, 'color' => $color];
              array_push($finalUserEntrys, $finalUser);
            }

            foreach($emptyPubkeys as $user) {
              $finalUser = [];
              $state = 'account not on community server';
              $color = 'secondary';
              if($user['email_checked'] == false) {
                $state = 'email not activated';
                $color = 'warning';
              } else {
                $state = 'no keys';
                $color = 'warning';
              }
              $finalUser['balance'] = 0;
              $finalUser['pubkeyhex'] = '';
              $finalUser['name'] = $user['first_name'] . ' ' . $user['last_name'];
              $finalUser['first_name'] = $user['first_name'];
              $finalUser['last_name'] = $user['last_name'];
              $finalUser['email'] = $user['email'];
              $finalUser['created'] = new FrozenTime($user['created']);
              $finalUser['indicator'] = ['name' => $state, 'color' => $color];
              array_push($finalUserEntrys, $finalUser);
            }
            //var_dump($pubkeySorted);
          } else {
            $this->Flash->error(__('Something was invalid, please try again!'));
          }

          $this->set('finalUserEntrys', $finalUserEntrys);
        }
        $timeUsed = microtime(true) - $startTime;
        $this->set('timeUsed', $timeUsed);
    }

    public function ajaxCopyCommunityToLogin()
    {
      $session = $this->getRequest()->getSession();
      $result = $this->requestLogin();
      if($result !== true) {
        return $this->returnJson(['state' => 'error', 'msg' => 'invalid session']);
      }
      $user = $session->read('StateUser');
      if($user['role'] != 'admin') {
        return $this->returnJson(['state' => 'error', 'msg' => 'not an admin']);
      }
      if($this->request->is('post')) {
          $jsonData = $this->request->input('json_decode', true);
      }
      return $this->returnJson(['state' => 'error', 'msg' => 'no post request']);
    }

    public function ajaxCopyLoginToCommunity()
    {
      $session = $this->getRequest()->getSession();
      $result = $this->requestLogin();
      if($result !== true) {
        return $this->returnJson(['state' => 'error', 'msg' => 'invalid session']);
      }
      $user = $session->read('StateUser');
      if($user['role'] != 'admin') {
        return $this->returnJson(['state' => 'error', 'msg' => 'not an admin']);
      }

      if($this->request->is('post')) {
          $jsonData = $this->request->input('json_decode', true);
          //$user = $jsonData['user'];
          //var_dump($jsonData);

          $newStateUser = $this->StateUsers->newEntity();
          $this->StateUsers->patchEntity($newStateUser, $jsonData);
          $newStateUser->public_key = hex2bin($jsonData['pubkeyhex']);

          if(!$this->StateUsers->save($newStateUser)) {
            return $this->returnJson(['state' => 'error', 'msg' => 'error by saving', 'details' => json_encode($newStateUser->errors())]);
          }

          return $this->returnJson(['state' => 'success']);
      }
      return $this->returnJson(['state' => 'error', 'msg' => 'no post request']);
    }

    public function ajaxVerificationEmailResend()
    {
      $session = $this->getRequest()->getSession();
      $result = $this->requestLogin();
      if($result !== true) {
        return $this->returnJson(['state' => 'error', 'msg' => 'invalid session']);
      }
      $user = $session->read('StateUser');
      if($user['role'] != 'admin') {
        return $this->returnJson(['state' => 'error', 'msg' => 'not an admin']);
      }
      if($this->request->is('post')) {
          $jsonData = $this->request->input('json_decode', true);
          $email = $jsonData['email'];
          $session_id = $session->read('session_id');

          return $this->returnJson($this->JsonRequestClient->sendRequest(json_encode([
              'session_id' => $session_id,
              'email' => $email
          ]), '/adminEmailVerificationResend'));
          /*return $this->sendRequest(json_encode([
                'session_id' => $session_id,
                'search' => $searchString
            ]), '/getUsers');*/
      }
      return $this->returnJson(['state' => 'error', 'msg' => 'no post request']);
    }

    public function ajaxGetUserEmailVerificationCode()
    {
      $session = $this->getRequest()->getSession();
      $result = $this->requestLogin();
      if($result !== true) {
        return $this->returnJson(['state' => 'error', 'msg' => 'invalid session']);
      }
      $user = $session->read('StateUser');
      if($user['role'] != 'admin') {
        return $this->returnJson(['state' => 'error', 'msg' => 'not an admin']);
      }
      if($this->request->is('post')) {
          $jsonData = $this->request->input('json_decode', true);
          $email = $jsonData['email'];
          $session_id = $session->read('session_id');

          return $this->returnJson($this->JsonRequestClient->sendRequest(json_encode([
              'session_id' => $session_id,
              'email' => $email,
              'ask' => ['EmailVerificationCode.Register', 'loginServer.path']
          ]), '/getUserInfos'));
      }
      return $this->returnJson(['state' => 'error', 'msg' => 'no post request']);
    }


    public function ajaxDelete()
    {
      $session = $this->getRequest()->getSession();
      $result = $this->requestLogin();
      if($result !== true) {
        return $this->returnJson(['state' => 'error', 'msg' => 'invalid session']);
      }
      $user = $session->read('StateUser');
      if($user['role'] != 'admin') {
        return $this->returnJson(['state' => 'error', 'msg' => 'not an admin']);
      }

      if($this->request->is('post')) {
          $jsonData = $this->request->input('json_decode', true);
          //$user = $jsonData['user'];
          //var_dump($jsonData);
          $pubkey = hex2bin($jsonData['pubkeyhex']);
          $stateUsers = $this->StateUsers->find('all')->where(['public_key' => $pubkey]);
          if($stateUsers->count() != 1) {
            return $this->returnJson(['state' => 'error', 'msg' => 'invalid result count']);
          }

          if ($this->StateUsers->delete($stateUsers->first())) {
            return $this->returnJson(['state' => 'success']);
          } else {
            return $this->returnJson(['state' => 'error', 'msg' => 'error by deleting', 'details' => json_encode($stateUser->errors())]);
          }
      }
      return $this->returnJson(['state' => 'error', 'msg' => 'no post request']);
    }

    public function ajaxCountTransactions()
    {
      $session = $this->getRequest()->getSession();
      $result = $this->requestLogin();
      if($result !== true) {
        return $this->returnJson(['state' => 'error', 'msg' => 'invalid session']);
      }
      $user = $session->read('StateUser');
      if($user['role'] != 'admin') {
        return $this->returnJson(['state' => 'error', 'msg' => 'not an admin']);
      }

      if($this->request->is('post')) {
          $jsonData = $this->request->input('json_decode', true);
          //$user = $jsonData['user'];
          //var_dump($jsonData);
          $pubkey = hex2bin($jsonData['pubkeyhex']);
          $stateUsers = $this->StateUsers
                  ->find('all')
                  ->where(['public_key' => $pubkey])
                  ->select(['id']);
          if($stateUsers->count() != 1) {
            return $this->returnJson(['state' => 'error', 'msg' => 'invalid result count']);
          }
          $stateUser = $stateUsers->first();
          //var_dump($stateUser);
          //var_dump($stateUser->toArray());
          $creationsTable = TableRegistry::getTableLocator()->get('TransactionCreations');
          $creationTransactions = $creationsTable
                  ->find('all')
                  ->select(['id'])
                  ->where(['state_user_id' => $stateUser->id]);

          $transferTable = TableRegistry::getTableLocator()->get('TransactionSendCoins');
          $transferTransactions = $transferTable
                  ->find('all')
                  ->where(['OR' => ['state_user_id' => $stateUser->id, 'receiver_user_id' => $stateUser->id]])
                  ->select(['state_user_id', 'receiver_user_id']);
          $counts = ['creation' => $creationTransactions->count(), 'receive' => 0, 'sended' => 0];
          foreach($transferTransactions as $transfer) {
            //var_dump($transfer);
            if($transfer->state_user_id == $stateUser->id) {
              $counts['sended']++;
            }
            if($transfer->receiver_user_id == $stateUser->id) {
              $counts['receive']++;
            }
          }
          return $this->returnJson(['state' => 'success', 'counts' => $counts]);

      }
      return $this->returnJson(['state' => 'error', 'msg' => 'no post request']);

    }
    
    public function ajaxGetCSFRToken($session_id)
    {
        if(!isset($session_id) || $session_id == 0) {
            $this->returnJson(['state' => 'error', 'msg' => 'no session id']);
        }
        
        $client_ip = $this->request->clientIp();

        $loginServer = Configure::read('LoginServer');
        $url = $loginServer['host'] . ':' . $loginServer['port'];

        $http = new Client();
        $response = $http->get($url . '/login', ['session_id' => $session_id]);
        $json = $response->getJson();

        if (isset($json) && count($json) > 0) {
            if ($json['state'] === 'success') {
                if($json['clientIP'] == $client_ip) {
                    return $this->returnJson(['state' => 'success', 'csfr' => $this->request->getParam('_csrfToken')]);
                } else {
                    return $this->returnJson([
                        'state' => 'error',
                        'msg' => 'client ip mismatch',
                        'details' => ['login_server' => $json['clientIP'], 'caller' => $client_ip]]);
                }
            } else {
                return $this->returnJson($json);
            }
        } else {
            return $this->returnJson(['state' => 'error', 'invalid response form logins server']);
        }
        
    }
    /*

     getField(vnode, 'receive'),

     getField(vnode, 'sended'),

     getField(vnode, 'creation'),
     */

    /**
     * View method
     *
     * @param string|null $id State User id.
     * @return \Cake\Http\Response|null
     * @throws \Cake\Datasource\Exception\RecordNotFoundException When record not found.
     */
    public function view($id = null)
    {
        $stateUser = $this->StateUsers->get($id, [
            'contain' => [
                'StateBalances',
                'TransactionCreations' => ['Transactions'],
                'TransactionSendCoins' => ['Transactions', 'ReceiverUsers'],
                'TransactionReceivedCoins' => ['Transactions', 'StateUsers']]
        ]);

        $this->set('stateUser', $stateUser);
    }

    /**
     * Add method
     *
     * @return \Cake\Http\Response|null Redirects on successful add, renders view otherwise.
     */
    public function add()
    {
        $stateUser = $this->StateUsers->newEntity();
        if ($this->request->is('post')) {
            $stateUser = $this->StateUsers->patchEntity($stateUser, $this->request->getData());
            if ($this->StateUsers->save($stateUser)) {
                $this->Flash->success(__('The state user has been saved.'));

                return $this->redirect(['action' => 'index']);
            }
            $this->Flash->error(__('The state user could not be saved. Please, try again.'));
        }
        $indices = $this->StateUsers->Indices->find('list', ['limit' => 200]);
        $stateGroups = $this->StateUsers->StateGroups->find('list', ['limit' => 200]);
        $this->set(compact('stateUser', 'indices', 'stateGroups'));
    }

    /**
     * Edit method
     *
     * @param string|null $id State User id.
     * @return \Cake\Http\Response|null Redirects on successful edit, renders view otherwise.
     * @throws \Cake\Datasource\Exception\RecordNotFoundException When record not found.
     */
    public function edit($id = null)
    {
        $stateUser = $this->StateUsers->get($id, [
            'contain' => []
        ]);
        if ($this->request->is(['patch', 'post', 'put'])) {
            $stateUser = $this->StateUsers->patchEntity($stateUser, $this->request->getData());
            if ($this->StateUsers->save($stateUser)) {
                $this->Flash->success(__('The state user has been saved.'));

                return $this->redirect(['action' => 'index']);
            }
            $this->Flash->error(__('The state user could not be saved. Please, try again.'));
        }
        $indices = $this->StateUsers->Indices->find('list', ['limit' => 200]);
        $stateGroups = $this->StateUsers->StateGroups->find('list', ['limit' => 200]);
        $this->set(compact('stateUser', 'indices', 'stateGroups'));
    }

    /**
     * Delete method
     *
     * @param string|null $id State User id.
     * @return \Cake\Http\Response|null Redirects to index.
     * @throws \Cake\Datasource\Exception\RecordNotFoundException When record not found.
     */
    public function delete($id = null)
    {
        $this->request->allowMethod(['post', 'delete']);
        $stateUser = $this->StateUsers->get($id);
        if ($this->StateUsers->delete($stateUser)) {
            $this->Flash->success(__('The state user has been deleted.'));
        } else {
            $this->Flash->error(__('The state user could not be deleted. Please, try again.'));
        }

        return $this->redirect(['action' => 'index']);
    }
}