<?php

namespace App\Http\Controllers;

use App\Http\Requests\StatsByBrandRequest;
use App\Http\Requests\StatsByQuestionRequest;
use App\Models\BrandStat;
use App\Models\CustomerAnswer;
use App\Models\Question;
use Illuminate\Support\Carbon;

class StatsController extends Controller
{
    public function viewStatsByBrand(StatsByBrandRequest $request)
    {
        $stats = null;
        if ($request->post()) {
            $stats = BrandStat::whereDate('created_at', '>=', $request->start)
                ->whereDate('created_at', '<=', $request->end)
                ->whereBrandId($request->brand)->get();
        }
        return view('stats.view-stats-by-brands', \compact('stats'));
    }

    public function viewByQuestion(StatsByQuestionRequest $request)
    {
        $question      = null;
        $answers       = null;
        $answersByDays = null;
        if ($request->post()) {
            $question = Question::findOrFail($request->question);
            $answers  = $question->answers;

            // Totalize by date all answers
            $answersByDays = CustomerAnswer::whereDate('created_at', '>=', $request->start)
                ->whereDate('created_at', '<=', $request->end)
                ->whereIn('answer_id', $answers->pluck('id'))
                ->get()->map(function ($custAnswer) {
                    return [
                        'answer_id' => $custAnswer->answer_id,
                        'created_at' => $custAnswer->created_at->format('Y-m-d'),
                    ];
                })->groupBy(['created_at', 'answer_id'])->map(function ($day) {
                    return $day->map(function ($custAnswers) {
                        return $custAnswers->count();
                    });
                });

            $start = Carbon::parse($request->start);
            $end   = Carbon::parse($request->end);

            do {
                $currentDate = $start->format('Y-m-d');
                /** @var \Illuminate\Support\Collection $answersByDays */
                if (!$answersByDays->has($currentDate)) {
                    $answersByDays->put(
                        $currentDate,
                        $answers->mapWithKeys(function ($answer) {
                            return [$answer->answer => 0];
                        })
                    );
                } else {
                    $curentAnswers = $answersByDays->pull($currentDate);
                    $answersByDays->put(
                        $currentDate,
                        $answers->mapWithKeys(function ($answer) use ($curentAnswers) {
                            return [$answer->answer =>
                            $curentAnswers->has($answer->id) ?
                                $curentAnswers->get($answer->id) : 0];
                        })
                    );
                }

                $start = $start->addDay();
            } while ($start->lessThanOrEqualTo($end));
        }

        return view('stats.view-stats-by-questions', \compact('question', 'answers', 'answersByDays'));
    }
}