<?php namespace FireflyIII\Models;

use App;
use Crypt;
use Illuminate\Database\Eloquent\Builder as EloquentBuilder;
use Illuminate\Database\Eloquent\Model;
use Illuminate\Database\Eloquent\SoftDeletes;
use Illuminate\Database\Query\JoinClause;
use Watson\Validating\ValidatingTrait;

/**
 * Class Account
 *
 * @package FireflyIII\Models
 */
class Account extends Model
{
    use SoftDeletes, ValidatingTrait;

    protected $fillable = ['user_id', 'account_type_id', 'name', 'active', 'virtual_balance'];
    protected $rules
                        = [
            'user_id'         => 'required|exists:users,id',
            'account_type_id' => 'required|exists:account_types,id',
            'name'            => 'required|between:1,1024|uniqueAccountForUser',
            'active'          => 'required|boolean'
        ];

    /**
     * @param array $fields
     *
     * @return Account|null
     */
    public static function firstOrCreateEncrypted(array $fields)
    {
        // everything but the name:
        $query = Account::orderBy('id');
        foreach ($fields as $name => $value) {
            if ($name != 'name') {
                $query->where($name, $value);
            }
        }
        $set = $query->get(['accounts.*']);
        /** @var Account $account */
        foreach ($set as $account) {
            if ($account->name == $fields['name']) {
                return $account;
            }
        }
        // create it!
        $account = Account::create($fields);
        if (is_null($account->id)) {
            // could not create account:
            App::abort(500, 'Could not create new account with data: ' . json_encode($fields));

        }

        return $account;

    }

    /**
     * @return \Illuminate\Database\Eloquent\Relations\HasMany
     */
    public function accountMeta()
    {
        return $this->hasMany('FireflyIII\Models\AccountMeta');
    }

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

    /**
     * @return array
     */
    public function getDates()
    {
        return ['created_at', 'updated_at', 'deleted_at'];
    }

    /**
     * @param $fieldName
     *
     * @return string|null
     */
    public function getMeta($fieldName)
    {
        foreach ($this->accountMeta as $meta) {
            if ($meta->name == $fieldName) {
                return $meta->data;
            }
        }

        return null;

    }

    /**
     * @param $value
     *
     * @return string
     */
    public function getNameAttribute($value)
    {

        if (intval($this->encrypted) == 1) {
            return Crypt::decrypt($value);
        }

        // @codeCoverageIgnoreStart
        return $value;
        // @codeCoverageIgnoreEnd
    }

    /**
     * @return \Illuminate\Database\Eloquent\Relations\HasMany
     */
    public function piggyBanks()
    {
        return $this->hasMany('FireflyIII\Models\PiggyBank');
    }

    /**
     * @param EloquentBuilder $query
     * @param array           $types
     */
    public function scopeAccountTypeIn(EloquentBuilder $query, array $types)
    {
        if (is_null($this->joinedAccountTypes)) {
            $query->leftJoin('account_types', 'account_types.id', '=', 'accounts.account_type_id');
            $this->joinedAccountTypes = true;
        }
        $query->whereIn('account_types.type', $types);
    }

    /**
     * @param EloquentBuilder $query
     * @param string          $name
     * @param string          $value
     */
    public function scopeHasMetaValue(EloquentBuilder $query, $name, $value)
    {
        $joinName = str_replace('.', '_', $name);
        $query->leftJoin(
            'account_meta as ' . $joinName, function (JoinClause $join) use ($joinName, $name) {
            $join->on($joinName . '.account_id', '=', 'accounts.id')->where($joinName . '.name', '=', $name);
        }
        );
        $query->where($joinName . '.data', json_encode($value));
    }

    /**
     * @param $value
     */
    public function setNameAttribute($value)
    {
        $this->attributes['name']      = Crypt::encrypt($value);
        $this->attributes['encrypted'] = true;
    }

    /**
     * @return \Illuminate\Database\Eloquent\Relations\HasMany
     */
    public function transactions()
    {
        return $this->hasMany('FireflyIII\Models\Transaction');
    }

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

}