<?php

namespace App\Services;

use App\Models\Entry;
use Illuminate\Support\Collection;
use Illuminate\Support\Facades\Cache;

class EntryCacheService
{
    protected $auditionCache;
    /**
     * Create a new class instance.
     */
    public function __construct(AuditionCacheService $auditionCache)
    {
        $this->auditionCache = $auditionCache;
    }

    /**
     * Return a collection of all entries for the provided auditionId along with the
     * student.school for each entry.
     * @param $auditionId
     * @return \Illuminate\Database\Eloquent\Collection
     */
    public function getEntriesForAudition($auditionId) {

        $cacheKey = 'audition' . $auditionId . 'entries';
        return Cache::remember($cacheKey, 3600,  function () use ($auditionId) {
            return Entry::where('audition_id',$auditionId)
                ->with('student.school')
                ->get()
                ->keyBy('id');
        });
    }

    /**
     * Returns a collection of collections of entries, one collection for each audition.
     * The outer collection is keyed by the audition ID. The included entries are
     * with their student.school.
     * @return Collection
     */
    public function getAllEntriesByAudition(): Collection
    {
        $auditions = $this->auditionCache->getAuditions();
        $allEntries = [];
        foreach ($auditions as $audition) {
            $allEntries[$audition->id] = $this->getEntriesForAudition($audition->id);
        }
        return collect($allEntries);
    }

    public function getAllEntries()
    {
        $cacheKey = 'allEntries';
        return Cache::remember($cacheKey, 3600, function() {
           return Entry::with(['student.school'])->get()->keyBy('id');
        });
    }

    public function clearEntryCacheForAudition($auditionId): void
    {
        $cacheKey = 'audition' . $auditionId . 'entries';
        Cache::forget($cacheKey);
        Cache::forget('allEntries');
    }

    public function clearEntryCaches(): void
    {
        $auditions = $this->auditionCache->getAuditions();
        foreach ($auditions as $audition) {
            $this->clearEntryCacheForAudition($audition->id);
        }
    }
}