<?php
/**
 * Transaction.php
 * Copyright (C) 2016 thegrumpydictator@gmail.com
 *
 * This software may be modified and distributed under the terms of the
 * Creative Commons Attribution-ShareAlike 4.0 International License.
 *
 * See the LICENSE file for details.
 */

declare(strict_types=1);

namespace FireflyIII\Models;

use Carbon\Carbon;
use Illuminate\Database\Eloquent\Builder;
use Illuminate\Database\Eloquent\Model;
use Illuminate\Database\Eloquent\SoftDeletes;
use Watson\Validating\ValidatingTrait;

/**
 * Class Transaction
 *
 * @package FireflyIII\Models
 */
class Transaction extends Model
{
    /**
     * The attributes that should be casted to native types.
     *
     * @var array
     */
    protected $casts
                      = [
            'created_at'          => 'date',
            'updated_at'          => 'date',
            'deleted_at'          => 'date',
            'identifier'          => 'int',
            'encrypted'           => 'boolean', // model does not have these fields though
            'bill_name_encrypted' => 'boolean',
        ];
    protected $dates  = ['created_at', 'updated_at', 'deleted_at'];
    protected $fillable
                      = ['account_id', 'transaction_journal_id', 'description', 'amount', 'identifier', 'transaction_currency_id', 'foreign_currency_id',
                         'foreign_amount'];
    protected $hidden = ['encrypted'];
    protected $rules
                      = [
            'account_id'              => 'required|exists:accounts,id',
            'transaction_journal_id'  => 'required|exists:transaction_journals,id',
            'transaction_currency_id' => 'required|exists:transaction_currencies,id',
            'description'             => 'between:0,1024',
            'amount'                  => 'required|numeric',
        ];

    /**
     * @param Builder $query
     * @param string  $table
     *
     * @return bool
     */
    public static function isJoined(Builder $query, string $table): bool
    {
        $joins = $query->getQuery()->joins;
        if (is_null($joins)) {
            return false;
        }
        foreach ($joins as $join) {
            if ($join->table === $table) {
                return true;
            }
        }

        return false;
    }

    use SoftDeletes, ValidatingTrait;

    /**
     * @return \Illuminate\Database\Eloquent\Relations\BelongsTo
     */
    public function account()
    {
        return $this->belongsTo('FireflyIII\Models\Account');
    }

    /**
     * @return \Illuminate\Database\Eloquent\Relations\BelongsToMany
     */
    public function budgets()
    {
        return $this->belongsToMany('FireflyIII\Models\Budget');
    }

    /**
     * @return \Illuminate\Database\Eloquent\Relations\BelongsToMany
     */
    public function categories()
    {
        return $this->belongsToMany('FireflyIII\Models\Category');
    }

    /**
     * @return \Illuminate\Database\Eloquent\Relations\BelongsTo
     */
    public function foreignCurrency()
    {
        return $this->belongsTo('FireflyIII\Models\TransactionCurrency', 'foreign_currency_id');
    }

    /**
     * @param $value
     *
     * @return float|int
     */
    public function getAmountAttribute($value)
    {
        return $value;
    }

    /**
     *
     * @param Builder $query
     * @param Carbon  $date
     */
    public function scopeAfter(Builder $query, Carbon $date)
    {
        if (!self::isJoined($query, 'transaction_journals')) {
            $query->leftJoin('transaction_journals', 'transaction_journals.id', '=', 'transactions.transaction_journal_id');
        }
        $query->where('transaction_journals.date', '>=', $date->format('Y-m-d 00:00:00'));
    }

    /**
     *
     * @param Builder $query
     * @param Carbon  $date
     *
     */
    public function scopeBefore(Builder $query, Carbon $date)
    {
        if (!self::isJoined($query, 'transaction_journals')) {
            $query->leftJoin('transaction_journals', 'transaction_journals.id', '=', 'transactions.transaction_journal_id');
        }
        $query->where('transaction_journals.date', '<=', $date->format('Y-m-d 23:59:59'));
    }

    /**
     *
     * @param Builder $query
     * @param array   $types
     */
    public function scopeTransactionTypes(Builder $query, array $types)
    {
        if (!self::isJoined($query, 'transaction_journals')) {
            $query->leftJoin('transaction_journals', 'transaction_journals.id', '=', 'transactions.transaction_journal_id');
        }

        if (!self::isJoined($query, 'transaction_types')) {
            $query->leftJoin('transaction_types', 'transaction_types.id', '=', 'transaction_journals.transaction_type_id');
        }
        $query->whereIn('transaction_types.type', $types);
    }

    /**
     * @param $value
     */
    public function setAmountAttribute($value)
    {
        $this->attributes['amount'] = strval(round($value, 12));
    }

    /**
     * @return \Illuminate\Database\Eloquent\Relations\BelongsTo
     */
    public function transactionCurrency()
    {
        return $this->belongsTo('FireflyIII\Models\TransactionCurrency');
    }

    /**
     * @return \Illuminate\Database\Eloquent\Relations\BelongsTo
     */
    public function transactionJournal()
    {
        return $this->belongsTo('FireflyIII\Models\TransactionJournal');
    }
}
