<?php
/**
 * Range.php
 * Copyright (C) 2016 thegrumpydictator@gmail.com
 *
 * This software may be modified and distributed under the terms
 * of the MIT license.  See the LICENSE file for details.
 */

declare(strict_types = 1);

namespace FireflyIII\Http\Middleware;

use Carbon\Carbon;
use Closure;
use FireflyIII\Exceptions\FireflyException;
use FireflyIII\Repositories\Journal\JournalRepositoryInterface;
use Illuminate\Contracts\Auth\Guard;
use Illuminate\Http\Request;
use Illuminate\Support\Facades\Auth;
use Navigation;
use Preferences;
use Session;
use View;


/**
 * Class SessionFilter
 *
 * @package FireflyIII\Http\Middleware
 */
class Range
{
    /**
     * The Guard implementation.
     *
     * @var Guard
     */
    protected $auth;

    /**
     * Create a new filter instance.
     *
     * @param  Guard $auth
     *
     */
    public function __construct(Guard $auth)
    {
        $this->auth = $auth;
    }

    /**
     * Handle an incoming request.
     *
     * @param  \Illuminate\Http\Request $request
     * @param Closure                   $theNext
     * @param  string|null              $guard
     *
     * @return mixed
     * @internal param Closure $next
     */
    public function handle(Request $request, Closure $theNext, $guard = null)
    {
        if (!Auth::guard($guard)->guest()) {
            // ignore preference. set the range to be the current month:
            if (!Session::has('start') && !Session::has('end')) {

                $viewRange = Preferences::get('viewRange', '1M')->data;
                $start     = new Carbon;
                $start     = Navigation::updateStartDate($viewRange, $start);
                $end       = Navigation::updateEndDate($viewRange, $start);

                Session::put('start', $start);
                Session::put('end', $end);
            }
            if (!Session::has('first')) {
                /** @var JournalRepositoryInterface $repository */
                $repository = app(JournalRepositoryInterface::class);
                $journal    = $repository->first();
                $first      = Carbon::now()->startOfYear();

                if (!is_null($journal->id)) {
                    $first = $journal->date;
                }
                Session::put('first', $first);
            }

        }
        $this->datePicker();

        return $theNext($request);

    }

    private function datePicker()
    {
        $viewRange          = Preferences::get('viewRange', '1M')->data;
        $start              = Session::get('start');
        $end                = Session::get('end');
        $prevStart          = Navigation::subtractPeriod($start, $viewRange);// subtract for previous period
        $prevEnd            = Navigation::subtractPeriod($end, $viewRange);
        $nextStart          = Navigation::addPeriod($start, $viewRange, 0);// add for previous period
        $nextEnd            = Navigation::addPeriod($end, $viewRange, 0);
        $ranges             = [];
        $ranges['current']  = [$start->format('Y-m-d'), $end->format('Y-m-d')];
        $ranges['previous'] = [$prevStart->format('Y-m-d'), $prevEnd->format('Y-m-d')];
        $ranges['next']     = [$nextStart->format('Y-m-d'), $nextEnd->format('Y-m-d')];

        switch ($viewRange) {
            case '1D':
                $format = (string)trans('config.month_and_day');
                break;
            case '3M':
                $format = (string)trans('config.quarter_in_year');
                break;
            case '6M':
                $format = (string)trans('config.half_year');
                break;
            case '1Y':
                $format = (string)trans('config.year');
                break;
            case '1M':
                $format = (string)trans('config.month');
                break;
            default:
                throw new FireflyException('The date picker does not yet support "' . $viewRange . '".');
            case '1W':
                $format = (string)trans('config.week_in_year');
                break;
        }


        $current = $start->formatLocalized($format);
        $next    = $nextStart->formatLocalized($format);
        $prev    = $prevStart->formatLocalized($format);
        View::share('dpStart', $start->format('Y-m-d'));
        View::share('dpEnd', $end->format('Y-m-d'));
        View::share('dpCurrent', $current);
        View::share('dpPrevious', $prev);
        View::share('dpNext', $next);
        View::share('dpRanges', $ranges);
    }

}