<?php

namespace App\Models;

use Illuminate\Database\Eloquent\Factories\HasFactory;
use Illuminate\Database\Eloquent\Relations\HasMany;
use Illuminate\Database\Eloquent\Model;
use App\Models\PlanLike;
use Illuminate\Database\Eloquent\Casts\Attribute;
use CyrildeWit\EloquentViewable\InteractsWithViews;
use CyrildeWit\EloquentViewable\Contracts\Viewable;

class Plan extends Model implements Viewable
{
    use HasFactory, InteractsWithViews;

    protected $withCount = [
        'likes',
        'comments'
    ];

    public function author()
    {
        return $this->belongsToMany(User::class, 'plan_author', 'plan_id', 'user_id');
    }

    public function comments()
    {
        return $this->hasMany(PlanComment::class);
    }

    public function likes(): HasMany
    {
        return $this->hasMany(PlanLike::class);
    }

    public function isLiked(): bool
    {
        if (auth()->user()) {
            return auth()->user()->plan_likes()->forPlan($this)->count();
        }

        return false;
    }

    public function allItems(): array
    {
        $result = [];
        for ($i = 1; $i <= $this->packets_count; $i++) {
            $key = "packet" . $i . "_options";
            $data = $this->unserializeOptionsObj($this->$key);
            if (!is_null($data)) {
                $result = array_merge($result, data_get($data, "items", []));
            }
        }

        return array_values(array_unique($result));
    }

    public function types(): Attribute
    {
        $data = $this->unserializeOptionsArr($this->type);

        return new Attribute(
            get: fn() => array_keys($data),
        );
    }

    public function minPrice(): Attribute
    {
        $result = 0;
        for ($i = 1; $i <= $this->packets_count; $i++) {
            $key = "packet" . $i . "_options";
            $data = $this->unserializeOptionsObj($this->$key);
            if (!is_null($data)) {
                $curPrice = (int)data_get($data, "price", 0);
                $result = $curPrice > $result ? $curPrice : $result ;
            }
        }

        return new Attribute(
            get: fn() => $result,
        );
    }

    public function removeLike(): bool
    {
        if (auth()->user()) {
            return auth()->user()->plan_likes()->forPlan($this)->delete();
        }

        return false;
    }

    private function unserializeOptionsObj($str)
    {
        if (preg_match('/^".*"$/', $str)) {
            return json_decode(stripslashes(mb_substr($str, 1, -1)));
        }
        return json_decode(stripslashes($str));
    }

    private function unserializeOptionsArr($str)
    {
        if (preg_match('/^".*"$/', $str)) {
            return json_decode(stripslashes(mb_substr($str, 1, -1)), true);
        }
        return json_decode(stripslashes($str), true);
    }
}