<?php

namespace App\Models;

use Illuminate\Database\Eloquent\Factories\HasFactory;
use Illuminate\Database\Eloquent\Model;
use Illuminate\Support\Facades\Cache;

/**
 * @property integer $id                                   Id.
 * @property string  $answer                               Answer.
 * @property integer $question_id                          Foreign key Question.
 * @property-read \Illuminate\Support\Carbon $created_at   Created date.
 * @property-read \Illuminate\Support\Carbon $updated_at   Updated date.
 *
 * @property-read \App\Models\Question $question Question BelongsTo relation.
 * @property-read \Illuminate\Database\Eloquent\Collection<Illuminate\Database\Eloquent\Model> $model Morph to relation.
 */
class Answer extends Model
{
    use HasFactory;

    /**
     * The attributes that are mass assignable.
     *
     * @var array<int, string>
     */
    protected $fillable = [
        'answer',
    ];

    /**
     * Perform any actions required after the model boots.
     *
     * @return void
     */
    protected static function booted(): void
    {
        static::created(function (self $model) {
            self::resetCache($model);
        });
        static::updated(function (self $model) {
            self::resetCache($model);
        });
        static::deleted(function (self $model) {
            self::resetCache($model);
        });
    }

    // * METHODS

    /**
     * Reset all cache elements related to this model.
     *
     * @param self $model
     * @return void
     */
    private static function resetCache(self $model): void
    {
        $questionModelKey = $model->question->getKey();
        Cache::forget("question-{$questionModelKey}-answers");
        self::getAllAnswersFromQuestion($questionModelKey);
    }

    /**
     * Get all answers.
     *
     * @param integer $questionModelKey
     * @return \Illuminate\Database\Eloquent\Collection
     */
    public static function getAllAnswersFromQuestion(int $questionModelKey): \Illuminate\Database\Eloquent\Collection
    {
        return Cache::remember("question-{$questionModelKey}-answers", 86400, function () use ($questionModelKey) {
            return self::query()
                ->whereHas('question', fn($q) => $q->whereKey($questionModelKey))
                ->orderBy('answer', 'ASC')
                ->get();
        });
    }

    // * RELATIONS

    /**
     * Question belongs to relation.
     *
     * @return \Illuminate\Database\Eloquent\Relations\BelongsTo
     */
    public function question(): \Illuminate\Database\Eloquent\Relations\BelongsTo
    {
        return $this->belongsTo(Question::class);
    }

    /**
     * Customer morph to relation.
     *
     * @return \Illuminate\Database\Eloquent\Relations\MorphToMany
     */
    public function customers(): \Illuminate\Database\Eloquent\Relations\MorphToMany
    {
        return $this->morphedByMany(Customer::class, 'model', 'model_answer', 'answer_id', 'model_id');
    }

    /**
     * Customer morph to relation.
     *
     * @return \Illuminate\Database\Eloquent\Relations\MorphToMany
     */
    public function singleOptins(): \Illuminate\Database\Eloquent\Relations\MorphToMany
    {
        return $this->morphedByMany(SingleOptin::class, 'model', 'model_answer', 'answer_id', 'model_id');
    }
}