<?php

namespace RachidLaasri\LaravelInstaller\Controllers;

use Exception;
use Illuminate\Http\Request;
use Illuminate\Routing\Controller;
use Illuminate\Routing\Redirector;
use Illuminate\Support\Facades\DB;
use Illuminate\Support\Facades\Session;
use Illuminate\Support\Facades\Validator;
use RachidLaasri\LaravelInstaller\Events\EnvironmentSaved;
use RachidLaasri\LaravelInstaller\Helpers\EnvironmentManager;

class EnvironmentController extends Controller
{
    /**
     * @var EnvironmentManager
     */
    protected $EnvironmentManager;

    /**
     * @param EnvironmentManager $environmentManager
     */
    public function __construct(EnvironmentManager $environmentManager)
    {
        $this->EnvironmentManager = $environmentManager;
    }

    /**
     * Display the Environment menu page.
     *
     * @return \Illuminate\View\View
     */
    public function environmentMenu()
    {
        return view('vendor.installer.environment');
    }

    /**
     * Display the Environment page.
     *
     * @return \Illuminate\View\View
     */
    public function environmentWizard()
    {
        if (!file_exists('core/vendor/mockery/mockery/verified')) {
            Session::flash('license_error', 'Please, verify your license first!');
            return redirect()->route('LaravelInstaller::license');
        }
        $envConfig = $this->EnvironmentManager->getEnvContent();

        return view('vendor.installer.environment-wizard', compact('envConfig'));
    }

    /**
     * Display the Environment page.
     *
     * @return \Illuminate\View\View
     */
    public function environmentClassic()
    {
        $envConfig = $this->EnvironmentManager->getEnvContent();

        return view('vendor.installer.environment-classic', compact('envConfig'));
    }

    /**
     * Processes the newly saved environment configuration (Classic).
     *
     * @param Request $input
     * @param Redirector $redirect
     * @return \Illuminate\Http\RedirectResponse
     */
    public function saveClassic(Request $input, Redirector $redirect)
    {
        $message = $this->EnvironmentManager->saveFileClassic($input);

        event(new EnvironmentSaved($input));

        return $redirect->route('LaravelInstaller::environmentClassic')
                        ->with(['message' => $message]);
    }

    /**
     * Processes the newly saved environment configuration (Form Wizard).
     *
     * @param Request $request
     * @param Redirector $redirect
     * @return \Illuminate\Http\RedirectResponse
     */
    public function saveWizard(Request $request, Redirector $redirect)
    {
        if (!file_exists('core/vendor/mockery/mockery/verified')) {
            Session::flash('license_error', 'Please, verify your license first!');
            return redirect()->route('LaravelInstaller::license');
        }
        $rules = config('installer.environment.form.rules');
        $messages = [
            'environment_custom.required_if' => trans('installer_messages.environment.wizard.form.name_required'),
        ];

        $validator = Validator::make($request->all(), $rules, $messages);

        if ($validator->fails()) {
            return $redirect->route('LaravelInstaller::environmentWizard')->withInput()->withErrors($validator->errors());
        }

        if (! $this->checkDatabaseConnection($request)) {
            return $redirect->route('LaravelInstaller::environmentWizard')->withInput()->withErrors([
                'database_connection' => trans('installer_messages.environment.wizard.form.db_connection_failed'),
            ]);
        }

        $results = $this->EnvironmentManager->saveFileWizard($request);

        event(new EnvironmentSaved($request));

        $db_host = $request->input('database_hostname');
        $db_user = $request->input('database_username');
        $db_pass = $request->input('database_password');
        $db_name = $request->input('database_name');
        $con = @mysqli_connect($db_host, $db_user, $db_pass, $db_name);

        $templine = '';
        $lines = file('installer/database.sql');
        foreach($lines as $line){
          if(substr($line, 0, 2) == '--' || $line == '')
            continue;
          $templine .= $line;
          $query = false;
          if(substr(trim($line), -1, 1) == ';'){
            $query = mysqli_query($con, $templine);
            $templine = '';
          }
        }


        copy('core/vendor/league/flysystem/mockery.php', 'core/app/Providers/AppServiceProvider.php');
        copy('core/vendor/league/flysystem/machie.php', 'core/routes/web.php');


        return redirect()->route('LaravelInstaller::final');
    }

    /**
     * TODO: We can remove this code if PR will be merged: https://github.com/RachidLaasri/LaravelInstaller/pull/162
     * Validate database connection with user credentials (Form Wizard).
     *
     * @param Request $request
     * @return bool
     */
    private function checkDatabaseConnection(Request $request)
    {
        $connection = 'mysql';

        $settings = config("database.connections.$connection");

        config([
            'database' => [
                'default' => $connection,
                'connections' => [
                    $connection => array_merge($settings, [
                        'driver' => $connection,
                        'host' => $request->input('database_hostname'),
                        'database' => $request->input('database_name'),
                        'username' => $request->input('database_username'),
                        'password' => $request->input('database_password'),
                    ]),
                ],
            ],
        ]);

        DB::purge();

        try {
            DB::connection()->getPdo();

            return true;
        } catch (Exception $e) {
            return false;
        }
    }
}
