<?php
/**
 * Category.php
 * Copyright (c) 2019 james@firefly-iii.org
 *
 * This file is part of Firefly III (https://github.com/firefly-iii).
 *
 * This program is free software: you can redistribute it and/or modify
 * it under the terms of the GNU Affero General Public License as
 * published by the Free Software Foundation, either version 3 of the
 * License, or (at your option) any later version.
 *
 * This program is distributed in the hope that it will be useful,
 * but WITHOUT ANY WARRANTY; without even the implied warranty of
 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
 * GNU Affero General Public License for more details.
 *
 * You should have received a copy of the GNU Affero General Public License
 * along with this program.  If not, see <https://www.gnu.org/licenses/>.
 */

declare(strict_types=1);

namespace FireflyIII\Models;

use Carbon\Carbon;
use Eloquent;
use FireflyIII\User;
use Illuminate\Database\Eloquent\Collection;
use Illuminate\Database\Eloquent\Model;
use Illuminate\Database\Eloquent\Relations\BelongsTo;
use Illuminate\Database\Eloquent\Relations\BelongsToMany;
use Illuminate\Database\Eloquent\Relations\MorphMany;
use Illuminate\Database\Eloquent\SoftDeletes;
use Illuminate\Database\Query\Builder;
use Symfony\Component\HttpKernel\Exception\NotFoundHttpException;

/**
 * Class Category.
 *
 * @property string                                                                                $name
 * @property int                                  $id
 * @property float                                $spent // used in category reports
 * @property Carbon|null                          lastActivity
 * @property bool                                 encrypted
 * @property User                                 $user
 * @property Carbon                               $created_at
 * @property Carbon                               $updated_at
 * @property \Illuminate\Support\Carbon|null      $deleted_at
 * @property int                                  $user_id
 * @property-read Collection|TransactionJournal[] $transactionJournals
 * @property-read Collection|Transaction[]        $transactions
 * @method static bool|null forceDelete()
 * @method static \Illuminate\Database\Eloquent\Builder|Category newModelQuery()
 * @method static \Illuminate\Database\Eloquent\Builder|Category newQuery()
 * @method static Builder|Category onlyTrashed()
 * @method static \Illuminate\Database\Eloquent\Builder|Category query()
 * @method static bool|null restore()
 * @method static \Illuminate\Database\Eloquent\Builder|Category whereCreatedAt($value)
 * @method static \Illuminate\Database\Eloquent\Builder|Category whereDeletedAt($value)
 * @method static \Illuminate\Database\Eloquent\Builder|Category whereEncrypted($value)
 * @method static \Illuminate\Database\Eloquent\Builder|Category whereId($value)
 * @method static \Illuminate\Database\Eloquent\Builder|Category whereName($value)
 * @method static \Illuminate\Database\Eloquent\Builder|Category whereUpdatedAt($value)
 * @method static \Illuminate\Database\Eloquent\Builder|Category whereUserId($value)
 * @method static Builder|Category withTrashed()
 * @method static Builder|Category withoutTrashed()
 * @mixin Eloquent
 * @property-read Collection|Attachment[] $attachments
 * @property-read int|null                $attachments_count
 * @property-read int|null                $transaction_journals_count
 * @property-read int|null                $transactions_count
 * @property bool $encrypted
 */
class Category extends Model
{
    use SoftDeletes;

    /**
     * The attributes that should be casted to native types.
     *
     * @var array
     */
    protected $casts
        = [
            'created_at' => 'datetime',
            'updated_at' => 'datetime',
            'deleted_at' => 'datetime',
            'encrypted'  => 'boolean',
        ];
    /** @var array Fields that can be filled */
    protected $fillable = ['user_id', 'name'];
    /** @var array Hidden from view */
    protected $hidden = ['encrypted'];

    /**
     * Route binder. Converts the key in the URL to the specified object (or throw 404).
     *
     * @param string $value
     *
     * @throws NotFoundHttpException
     * @return Category
     */
    public static function routeBinder(string $value): Category
    {
        if (auth()->check()) {
            $categoryId = (int) $value;
            /** @var User $user */
            $user = auth()->user();
            /** @var Category $category */
            $category = $user->categories()->find($categoryId);
            if (null !== $category) {
                return $category;
            }
        }
        throw new NotFoundHttpException;
    }

    /**
     * @codeCoverageIgnore
     * @return BelongsToMany
     */
    public function transactionJournals(): BelongsToMany
    {
        return $this->belongsToMany(TransactionJournal::class, 'category_transaction_journal', 'category_id');
    }


    /**
     * @codeCoverageIgnore
     * @return MorphMany
     */
    public function attachments(): MorphMany
    {
        return $this->morphMany(Attachment::class, 'attachable');
    }

    /**
     * @codeCoverageIgnore
     * @return BelongsToMany
     */
    public function transactions(): BelongsToMany
    {
        return $this->belongsToMany(Transaction::class, 'category_transaction', 'category_id');
    }

    /**
     * @codeCoverageIgnore
     * @return BelongsTo
     */
    public function user(): BelongsTo
    {
        return $this->belongsTo(User::class);
    }
}