<?php

namespace Beike\Installer\Controllers;

use Exception;
use Illuminate\Http\Request;
use Illuminate\Routing\Controller;
use Illuminate\Routing\Redirector;
use Illuminate\Support\Facades\DB;
use Beike\Installer\Helpers\EnvironmentManager;
use Illuminate\Support\Facades\Session;
use Validator;

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

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

    /**
     * Display the Environment page.
     *
     * @return \Illuminate\View\View
     */
    public function index()
    {
        $steps = 4;

        return view('installer::environment-wizard', compact('steps'));
    }

    /**
     * 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)
    {
        $rules = config('installer.environment.form.rules');
        $messages = [
            'environment_custom.required_if' => trans('installer::installer_messages.environment.name_required'),
        ];

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

        if ($validator->fails()) {
            return $redirect->route('installer.environment')->withInput()->withErrors($validator->errors());
        }

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

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

        $params = [
            'admin_email' => $request->get('admin_email'),
            'admin_password' => $request->get('admin_password'),
        ];

        return redirect(route('installer.database', $params));
    }

    public function validateDatabase(Request $request)
    {
        $rules = config('installer.environment.form.rules');
        $messages = [
            'environment_custom.required_if' => trans('installer::installer_messages.environment.name_required'),
        ];

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

        if ($validator->fails()) {
            return json_fail('', $validator->errors());
        }

        $dbValidateResult = $this->checkDatabaseConnection($request);
        if ($dbValidateResult !== true) {
            return json_fail('', $dbValidateResult);
        }

        return json_success('');
    }


    /**
     * 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 = $request->input('database_connection');

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

        config([
            'database' => [
                'default' => $connection,
                'connections' => [
                    $connection => array_merge($settings, [
                        'driver' => $connection,
                        'host' => $request->input('database_hostname'),
                        'port' => $request->input('database_port'),
                        'database' => $request->input('database_name'),
                        'username' => $request->input('database_username'),
                        'password' => $request->input('database_password'),
                        'options'   => [
                            \PDO::ATTR_TIMEOUT => 1,
                        ],
                    ]),
                ],
            ],
        ]);

        DB::purge();

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

            return true;
        } catch (Exception $e) {
            $result = [];
            switch ($e->getCode()) {
                case 2002:
                    $result['database_hostname'] = trans('installer::installer_messages.environment.db_connection_failed_host_port');
                    $result['database_port'] = trans('installer::installer_messages.environment.db_connection_failed_host_port');
                    break;
                case 1045:
                    $result['database_username'] = trans('installer::installer_messages.environment.db_connection_failed_user_password');
                    $result['database_password'] = trans('installer::installer_messages.environment.db_connection_failed_user_password');
                    break;
                case 1049:
                    $result['database_name'] = trans('installer::installer_messages.environment.db_connection_failed_database_name');
                    break;
                default:

            }
            return $result;
        }
    }
}