ARCANEDEV / LaravelHtml

src/FormBuilder.php

<?php

declare(strict_types=1);

namespace Arcanedev\LaravelHtml;

use Arcanedev\Html\Elements\{Button, File, Form, Input, Label, Select, Textarea};
use Arcanedev\LaravelHtml\Contracts\FormBuilder as FormBuilderContract;
use DateTime;
use Illuminate\Contracts\Routing\UrlGenerator;
use Illuminate\Contracts\Session\Session;
use Illuminate\Support\{Arr, Collection, HtmlString, Str};

/**
 * Class     FormBuilder
 *
 * @package  Arcanedev\LaravelHtml
 * @author   ARCANEDEV <arcanedev.maroc@gmail.com>
 */
class FormBuilder extends AbstractBuilder implements FormBuilderContract
{
    /* -----------------------------------------------------------------
     |  Properties
     | -----------------------------------------------------------------
     */

    /**
    * The HTML builder instance.
    *
    * @var \Arcanedev\LaravelHtml\Contracts\HtmlBuilder
    */
    protected $html;

    /**
    * The URL generator instance.
    *
    * @var \Illuminate\Contracts\Routing\UrlGenerator
    */
    protected $url;

    /**
    * The CSRF token used by the form builder.
    *
    * @var string
    */
    protected $csrfToken;

    /**
    * The session store implementation.
    *
    * @var \Illuminate\Contracts\Session\Session|\Illuminate\Session\Store
    */
    protected $session;

    /**
    * The current model instance for the form.
    *
    * @var \Illuminate\Database\Eloquent\Model|null
    */
    protected $model;

    /**
    * An array of label names we've created.
    *
    * @var array
    */
    protected $labels = [];

    /**
    * The reserved form open attributes.
    *
    * @var array
    */
    protected $reserved = ['method', 'url', 'route', 'action', 'files'];

    /**
    * The form methods that should be spoofed, in uppercase.
    *
    * @var array
    */
    protected $spoofedMethods = ['DELETE', 'PATCH', 'PUT'];

    /**
    * The types of inputs to not fill values on by default.
    *
    * @var array
    */
    protected $skipValueTypes = ['file', 'password', 'checkbox', 'radio'];

    /* -----------------------------------------------------------------
     |  Constructor
     | -----------------------------------------------------------------
     */

    /**
    * Create a new form builder instance.
    *
    * @param  \Arcanedev\LaravelHtml\Contracts\HtmlBuilder  $html
    * @param  \Illuminate\Contracts\Routing\UrlGenerator    $url
    * @param  \Illuminate\Contracts\Session\Session         $session
    */
    public function __construct(Contracts\HtmlBuilder $html, UrlGenerator $url, Session $session)
    {
        $this->url       = $url;
        $this->html      = $html;
        $this->csrfToken = $session->token();

        $this->setSessionStore($session);
    }

    /* -----------------------------------------------------------------
     |  Getters & Setters
     | -----------------------------------------------------------------
     */

    /**
     * Get the session store implementation.
     *
     * @return  \Illuminate\Contracts\Session\Session|null
     */
    public function getSessionStore(): ?Session
    {
        return $this->session;
    }

    /**
     * Set the session store implementation.
     *
     * @param  \Illuminate\Contracts\Session\Session  $session
     *
     * @return $this
     */
    public function setSessionStore(Session $session)
    {
        $this->session = $session;

        return $this;
    }

    /**
     * Set the model instance on the form builder.
     *
     * @param  \Illuminate\Database\Eloquent\Model|mixed|null  $model
     *
     * @return $this
     */
    public function setModel($model)
    {
        $this->model = $model;

        return $this;
    }

    /**
     * Get the model instance on the form builder.
     *
     * @return \Illuminate\Database\Eloquent\Model|mixed|null
     */
    public function getModel()
    {
        return $this->model;
    }

    /**
     * Get the ID attribute for a field name.
     *
     * @param  string|null  $name
     * @param  array        $attributes
     *
     * @return string|null
     */
    public function getIdAttribute($name, array $attributes): ?string
    {
        if (array_key_exists('id', $attributes))
            return $attributes['id'];

        if ( ! is_null($name) && in_array($name, $this->labels))
            return $name;

        return null;
    }

    /**
     * Get the value that should be assigned to the field.
     *
     * @param  string  $name
     * @param  mixed   $value
     *
     * @return mixed
     */
    public function getValueAttribute($name, $value = null)
    {
        if (is_null($name))
            return $value;

        if ( ! is_null($this->old($name)) && $name !== '_method')
            return $this->old($name);

        if ( ! is_null($value))
            return $value;

        return $this->getModelValueAttribute($name);
    }

    /**
     * Get the model value that should be assigned to the field.
     *
     * @param  string                                          $name
     * @param  \Illuminate\Database\Eloquent\Model|mixed|null  $model
     *
     * @return mixed
     */
    private function getModelValueAttribute(string $name, $model = null)
    {
        $model = $model ?: $this->getModel();

        $key = static::transformKey($name);

        if (strpos($key, '.') !== false) {
            $keys = explode('.', $key, 2);

            return $this->getModelValueAttribute(
                $keys[1],
                $this->getModelValueAttribute($keys[0], $model)
            );
        }

        return method_exists($model, 'getFormValue')
            ? $model->getFormValue($key)
            : data_get($model, $key);
    }

    /**
     * Get a value from the session's old input.
     *
     * @param  string  $name
     *
     * @return mixed
     */
    public function old(string $name)
    {
        $session = $this->getSessionStore();

        return is_null($session) ? null : $session->getOldInput(static::transformKey($name));
    }

    /**
     * Transform key from array to dot syntax.
     *
     * @param  string  $key
     *
     * @return string
     */
    private static function transformKey(string $key): string
    {
        return str_replace(
            ['.', '[]', '[', ']'],
            ['_', '', '.', ''],
            $key
        );
    }

    /**
     * Determine if the old input is empty.
     *
     * @return bool
     */
    public function oldInputIsEmpty(): bool
    {
        $session = $this->getSessionStore();

        return ! is_null($session)
            && (count($session->getOldInput()) === 0);
    }

    /* -----------------------------------------------------------------
     |  Main Methods
     | -----------------------------------------------------------------
     */

    /**
     * Open up a new HTML form.
     *
     * @param  array  $attributes
     *
     * @return \Illuminate\Support\HtmlString
     */
    public function open(array $attributes = []): HtmlString
    {
        $method = Str::upper(Arr::pull($attributes, 'method', 'POST'));

        return Form::make()
            ->method($method !== 'GET' ? 'POST' : $method)
            ->action($this->getAction($attributes))
            ->attributes(array_merge(
                ['accept-charset' => 'UTF-8'],
                Arr::except($attributes, $this->reserved)
            ))
            ->if(Arr::pull($attributes, 'files', false), function (Form $form) {
                return $form->acceptsFiles();
            })
            ->if(in_array($method, $this->spoofedMethods), function (Form $form) use ($method) {
                return $form->addChild($this->hidden('_method', $method));
            })
            ->if($method !== 'GET', function (Form $form) {
                return $form->addChild($this->token());
            })
            ->open();
    }

    /**
     * Create a new model based form builder.
     *
     * @param  mixed  $model
     * @param  array  $attributes
     *
     * @return \Illuminate\Support\HtmlString
     */
    public function model($model, array $attributes = []): HtmlString
    {
        return $this->setModel($model)->open($attributes);
    }

    /**
     * Close the current form.
     *
     * @return \Illuminate\Support\HtmlString
     */
    public function close(): HtmlString
    {
        $this->labels = [];
        $this->setModel(null);

        return Form::make()->close();
    }

    /**
     * Generate a hidden field with the current CSRF token.
     *
     * @return \Arcanedev\Html\Elements\Input
     */
    public function token(): Input
    {
        $token = empty($this->csrfToken)
            ? $this->getSessionStore()->token()
            : $this->csrfToken;

        return $this->hidden('_token', $token);
    }

    /**
     * Create a form label element.
     *
     * @param  string        $name
     * @param  string|mixed  $value
     * @param  array         $attributes
     * @param  bool          $escaped
     *
     * @return \Arcanedev\Html\Elements\Label
     */
    public function label(string $name, $value = null, array $attributes = [], $escaped = true): Label
    {
        $this->labels[] = $name;

        $value = $value ?: Str::title(str_replace(['_', '-'], ' ', $name));

        return Label::make()
            ->for($name)
            ->attributes($attributes)
            ->html($escaped ? e($value) : $value);
    }

    /**
     * Create a form input field.
     *
     * @param  string        $type
     * @param  string|null   $name
     * @param  string|mixed  $value
     * @param  array         $attributes
     *
     * @return \Arcanedev\Html\Elements\Input
     */
    public function input(string $type, $name, $value = null, array $attributes = []): Input
    {
        if ( ! in_array($type, $this->skipValueTypes))
            $value = $this->getValueAttribute($name, $value);

        $id = $this->getIdAttribute($name, $attributes);

        return Input::make()
            ->type($type)
            ->attributeIfNotNull($name, 'name', $name)

The call to Input::attributeIfNotNull() has too many arguments starting with $name.

            ->attributeIfNotNull($id, 'id', $id)
            ->attributeUnless(is_null($value) || empty($value), 'value', $value)
            ->attributes($attributes);
    }

    /**
     * Create a text input field.
     *
     * @param  string        $name
     * @param  string|mixed  $value
     * @param  array         $attributes
     *
     * @return \Arcanedev\Html\Elements\Input
     */
    public function text(string $name, $value = null, array $attributes = []): Input
    {
        return $this->input('text', $name, $value, $attributes);
    }

    /**
     * Create a password input field.
     *
     * @param  string  $name
     * @param  array   $attributes
     *
     * @return \Arcanedev\Html\Elements\Input
     */
    public function password(string $name, array $attributes = []): Input
    {
        return $this->input('password', $name, null, $attributes);
    }

    /**
     * Create a hidden input field.
     *
     * @param  string        $name
     * @param  string|mixed  $value
     * @param  array         $attributes
     *
     * @return \Arcanedev\Html\Elements\Input
     */
    public function hidden(string $name, $value = null, array $attributes = []): Input
    {
        return $this->input('hidden', $name, $value, $attributes);
    }

    /**
     * Create an e-mail input field.
     *
     * @param  string        $name
     * @param  string|mixed  $value
     * @param  array         $attributes
     *
     * @return \Arcanedev\Html\Elements\Input
     */
    public function email(string $name, $value = null, array $attributes = []): Input
    {
        return $this->input('email', $name, $value, $attributes);
    }

    /**
     * Create a tel input field.
     *
     * @param  string        $name
     * @param  string|mixed  $value
     * @param  array         $attributes
     *
     * @return \Arcanedev\Html\Elements\Input
     */
    public function tel(string $name, $value = null, array $attributes = []): Input
    {
        return $this->input('tel', $name, $value, $attributes);
    }

    /**
     * Create a number input field.
     *
     * @param  string        $name
     * @param  string|mixed  $value
     * @param  array         $attributes
     *
     * @return \Arcanedev\Html\Elements\Input
     */
    public function number(string $name, $value = null, array $attributes = []): Input
    {
        return $this->input('number', $name, $value, $attributes);
    }

    /**
     * Create a date input field.
     *
     * @param  string  $name
     * @param  string  $value
     * @param  array   $attributes
     *
     * @return \Arcanedev\Html\Elements\Input
     */
    public function date(string $name, $value = null, array $attributes = []): Input
    {
        if ($value instanceof DateTime)
            $value = $value->format('Y-m-d');

        return $this->input('date', $name, $value, $attributes);
    }

    /**
     * Create a datetime input field.
     *
     * @param  string        $name
     * @param  string|mixed  $value
     * @param  array         $attributes
     *
     * @return \Arcanedev\Html\Elements\Input
     */
    public function datetime(string $name, $value = null, array $attributes = []): Input
    {
        if ($value instanceof DateTime)
            $value = $value->format(DateTime::RFC3339);

        return $this->input('datetime', $name, $value, $attributes);
    }

    /**
     * Create a datetime-local input field.
     *
     * @param  string        $name
     * @param  string|mixed  $value
     * @param  array         $attributes
     *
     * @return \Arcanedev\Html\Elements\Input
     */
    public function datetimeLocal(string $name, $value = null, array $attributes = []): Input
    {
        if ($value instanceof DateTime)
            $value = $value->format('Y-m-d\TH:i');

        return $this->input('datetime-local', $name, $value, $attributes);
    }

    /**
     * Create a time input field.
     *
     * @param  string        $name
     * @param  string|mixed  $value
     * @param  array         $attributes
     *
     * @return \Arcanedev\Html\Elements\Input
     */
    public function time(string $name, $value = null, array $attributes = []): Input
    {
        return $this->input('time', $name, $value, $attributes);
    }

    /**
     * Create a url input field.
     *
     * @param  string  $name
     * @param  string  $value
     * @param  array   $attributes
     *
     * @return \Arcanedev\Html\Elements\Input
     */
    public function url(string $name, $value = null, array $attributes = []): Input
    {
        return $this->input('url', $name, $value, $attributes);
    }

    /**
     * Create a file input field.
     *
     * @param  string  $name
     * @param  array   $attributes
     *
     * @return \Arcanedev\Html\Elements\File
     */
    public function file(string $name, array $attributes = []): File
    {
        return File::make()->name($name)->attributes($attributes);
    }

    /**
     * Create a textarea input field.
     *
     * @param  string  $name
     * @param  string  $value
     * @param  array   $attributes
     *
     * @return \Arcanedev\Html\Elements\Textarea
     */
    public function textarea(string $name, $value = null, array $attributes = []): Textarea
    {
        $id    = $this->getIdAttribute($name, $attributes);
        $size  = Arr::pull($attributes, 'size');
        $value = (string) $this->getValueAttribute($name, $value);

        return Textarea::make()
            ->name($name)
            ->attributeUnless(is_null($id), 'id', $id)
            ->unless(is_null($size), function (Textarea $elt) use ($size) {
                return $elt->size($size);
            })
            ->attributes($attributes)
            ->html($this->html->escape($value));
    }

    /**
     * Create a select box field.
     *
     * @param  string                                         $name
     * @param  array|\Illuminate\Support\Collection|iterable  $list
     * @param  string|bool                                    $selected
     * @param  array                                          $attributes
     * @param  array                                          $optionsAttributes
     * @param  array                                          $optgroupsAttributes
     *
     * @return \Arcanedev\Html\Elements\Select
     */
    public function select(
        string $name,
        iterable $list = [],
        $selected = null,
        array $attributes = [],
        array $optionsAttributes = [],
        array $optgroupsAttributes = []
    ): Select {
        return Select::make()
            ->name($name)
            ->options($list, $optionsAttributes, $optgroupsAttributes)
            ->attributes($attributes)
            ->attributeUnless(is_null($id = $this->getIdAttribute($name, $attributes)), 'id', $id)
            ->value($this->getValueAttribute($name, $selected));
    }

    /**
     * Create a select range field.
     *
     * @param  string  $name
     * @param  string  $begin
     * @param  string  $end
     * @param  string  $selected
     * @param  array   $attributes
     *
     * @return \Arcanedev\Html\Elements\Select
     */
    public function selectRange(string $name, $begin, $end, $selected = null, array $attributes = []): Select
    {
        $range = array_combine($range = range($begin, $end), $range);

        return $this->select($name, $range, $selected, $attributes);
    }

    /**
     * Create a select year field.
     *
     * @param  string  $name
     * @param  string  $begin
     * @param  string  $end
     * @param  string  $selected
     * @param  array   $attributes
     *
     * @return \Arcanedev\Html\Elements\Select
     */
    public function selectYear(string $name, $begin, $end, $selected = null, array $attributes = []): Select
    {
        return $this->selectRange($name, $begin, $end, $selected, $attributes);
    }

    /**
     * Create a select month field.
     *
     * @param  string  $name
     * @param  string  $selected
     * @param  array   $attributes
     * @param  string  $format
     *
     * @return \Arcanedev\Html\Elements\Select
     */
    public function selectMonth(string $name, $selected = null, array $attributes = [], $format = '%B'): Select
    {
        $months = [];

        foreach(range(1, 12) as $month) {
            $months[$month] = strftime($format, mktime(0, 0, 0, $month, 1));
        }

        return $this->select($name, $months, $selected, $attributes);
    }

    /**
     * Create a checkbox input field.
     *
     * @param  string     $name
     * @param  mixed      $value
     * @param  bool|null  $checked
     * @param  array      $attributes
     *
     * @return \Arcanedev\Html\Elements\Input
     */
    public function checkbox(string $name, $value = 1, $checked = null, array $attributes = []): Input
    {
        return $this->checkable('checkbox', $name, $value, $checked, $attributes);
    }

    /**
     * Create a radio button input field.
     *
     * @param  string  $name
     * @param  mixed   $value
     * @param  bool    $checked
     * @param  array   $attributes
     *
     * @return \Arcanedev\Html\Elements\Input
     */
    public function radio(string $name, $value = null, $checked = null, array $attributes = []): Input
    {
        return $this->checkable('radio', $name, $value ?: $name, $checked, $attributes);
    }

    /**
     * Create a HTML reset input element.
     *
     * @param  string|mixed  $value
     * @param  array         $attributes
     *
     * @return \Arcanedev\Html\Elements\Button
     */
    public function reset($value, array $attributes = []): Button
    {
        return $this->button($value, array_merge(['type' => 'reset'], $attributes));
    }

    /**
    * Create a HTML image input element.
    *
    * @param  string       $url
    * @param  string|null  $name
    * @param  array        $attributes
    *
     * @return \Arcanedev\Html\Elements\Input
    */
    public function image(string $url, $name = null, array $attributes = []): Input
    {
        return $this->input('image', $name, null, array_merge($attributes, [
            'src' => $this->url->asset($url),
        ]));
    }

    /**
     * Create a submit button element.
     *
     * @param  string|mixed  $value
     * @param  array         $attributes
     *
     * @return \Arcanedev\Html\Elements\Button
     */
    public function submit($value = null, array $attributes = []): Button
    {
        return $this->button($value, array_merge(['type' => 'submit'], $attributes));
    }

    /**
     * Create a button element.
     *
     * @param  string|mixed  $value
     * @param  array         $attributes
     *
     * @return \Arcanedev\Html\Elements\Button
     */
    public function button($value = null, array $attributes = []): Button
    {
        return Button::make()
            ->type(Arr::pull($attributes, 'type', 'button'))
            ->attributes($attributes)
            ->html($value);
    }

    /**
     * Create a color input field.
     *
     * @param  string        $name
     * @param  string|mixed  $value
     * @param  array         $attributes
     *
     * @return \Arcanedev\Html\Elements\Input
     */
    public function color(string $name, $value = null, array $attributes = []): Input
    {
        return $this->input('color', $name, $value, $attributes);
    }

    /* -----------------------------------------------------------------
     |  Other Methods
     | -----------------------------------------------------------------
     */

    /**
     * Create a checkable input field.
     *
     * @param  string     $type
     * @param  string     $name
     * @param  mixed      $value
     * @param  bool|null  $checked
     * @param  array      $attributes
     *
     * @return \Arcanedev\Html\Elements\Input
     */
    protected function checkable(string $type, string $name, $value, $checked, array $attributes): Input
    {
        $checked = $this->getCheckedState($type, $name, $value, $checked);

        if ( ! is_null($checked) && $checked)
            $attributes['checked'] = 'checked';

        return $this->input($type, $name, $value, $attributes);
    }

    /**
     * Get the check state for a checkable input.
     *
     * @param  string     $type
     * @param  string     $name
     * @param  mixed      $value
     * @param  bool|null  $checked
     *
     * @return bool
     */
    private function getCheckedState(string $type, string $name, $value, $checked): bool
    {
        switch($type) {
            case 'checkbox':
                return $this->getCheckboxCheckedState($name, $value, $checked);

            case 'radio':
                return $this->getRadioCheckedState($name, $value, $checked);

            default:
                return $this->getValueAttribute($name) === $value;
        }
    }

    /**
     * Get the check state for a checkbox input.
     *
     * @param  string     $name
     * @param  mixed      $value
     * @param  bool|null  $checked
     *
     * @return bool
     */
    private function getCheckboxCheckedState(string $name, $value, $checked): bool
    {
        if (
            isset($this->session) &&
            ! $this->oldInputIsEmpty() &&
            is_null($this->old($name))
        ) {
            return false;
        }

        if ($this->missingOldAndModel($name)) {
            return (bool) $checked;
        }

        $posted = $this->getValueAttribute($name, $checked);

        if (is_array($posted)) {
            return in_array($value, $posted);
        }

        if ($posted instanceof Collection) {
            return $posted->contains('id', $value);
        }

        return (bool) $posted;
    }

    /**
     * Get the check state for a radio input.
     *
     * @param  string     $name
     * @param  mixed      $value
     * @param  bool|null  $checked
     *
     * @return bool
     */
    private function getRadioCheckedState(string $name, $value, $checked): bool
    {
        if ($this->missingOldAndModel($name)) {
            return (bool) $checked;
        }

        return $this->getValueAttribute($name) === $value;
    }

    /**
     * Determine if old input or model input exists for a key.
     *
     * @param  string  $name
     *
     * @return bool
     */
    private function missingOldAndModel(string $name): bool
    {
        return is_null($this->old($name))
            && is_null($this->getModelValueAttribute($name));
    }

    /**
     * Get the form action from the options.
     *
     * @param  array  $attributes
     *
     * @return string
     */
    private function getAction(array $attributes): string
    {
        if (isset($attributes['url']))
            return $this->getUrlAction($attributes['url']);

        if (isset($attributes['route']))
            return $this->getRouteAction($attributes['route']);

        if (isset($attributes['action']))
            return $this->getControllerAction($attributes['action']);

        return $this->url->current();
    }

    /**
     * Get the action for a "url" option.
     *
     * @param  array|string  $attribute
     *
     * @return string
     */
    private function getUrlAction($attribute): string
    {
        return is_array($attribute)
            ? $this->url->to($attribute[0], array_slice($attribute, 1))
            : $this->url->to($attribute);
    }

    /**
     * Get the action for a "route" option.
     *
     * @param  array|string  $attribute
     *
     * @return string
     */
    private function getRouteAction($attribute): string
    {
        return is_array($attribute)
            ? $this->url->route($attribute[0], array_slice($attribute, 1))
            : $this->url->route($attribute);
    }

    /**
     * Get the action for an "action" option.
     *
     * @param  array|string  $attribute
     *
     * @return string
     */
    private function getControllerAction($attribute): string
    {
        return is_array($attribute)
            ? $this->url->action($attribute[0], array_slice($attribute, 1))
            : $this->url->action($attribute);
    }
}