Dcat-Admin/src/Grid.php

<?php

namespace Dcat\Admin;

use Closure;
use Dcat\Admin\Contracts\Repository;
use Dcat\Admin\Grid\Column;
use Dcat\Admin\Grid\Concerns;
use Dcat\Admin\Grid\Model;
use Dcat\Admin\Grid\Responsive;
use Dcat\Admin\Grid\Row;
use Dcat\Admin\Grid\Tools;
use Dcat\Admin\Support\Helper;
use Dcat\Admin\Traits\HasBuilderEvents;
use Illuminate\Contracts\Support\Renderable;
use Illuminate\Database\Eloquent\Builder;
use Illuminate\Support\Collection;
use Illuminate\Support\Str;
use Illuminate\Support\Traits\Macroable;

class Grid
{
    use HasBuilderEvents,
        Concerns\HasNames,
        Concerns\HasFilter,
        Concerns\HasTools,
        Concerns\HasActions,
        Concerns\HasPaginator,
        Concerns\HasExporter,
        Concerns\HasComplexHeaders,
        Concerns\HasSelector,
        Concerns\HasQuickCreate,
        Concerns\HasQuickSearch,
        Macroable {
            __call as macroCall;
        }

    const CREATE_MODE_DEFAULT = 'default';
    const CREATE_MODE_DIALOG = 'dialog';

    /**
     * The grid data model instance.
     *
     * @var \Dcat\Admin\Grid\Model
     */
    protected $model;

    /**
     * Collection of all grid columns.
     *
     * @var \Illuminate\Support\Collection
     */
    protected $columns;

    /**
     * Collection of all data rows.
     *
     * @var \Illuminate\Support\Collection
     */
    protected $rows;

    /**
     * Rows callable fucntion.
     *
     * @var \Closure[]
     */
    protected $rowsCallback = [];

    /**
     * All column names of the grid.
     *
     * @var array
     */
    protected $columnNames = [];

    /**
     * Grid builder.
     *
     * @var \Closure
     */
    protected $builder;

    /**
     * Mark if the grid is built.
     *
     * @var bool
     */
    protected $built = false;

    /**
     * All variables in grid view.
     *
     * @var array
     */
    protected $variables = [];

    /**
     * Resource path of the grid.
     *
     * @var
     */
    protected $resourcePath;

    /**
     * Default primary key name.
     *
     * @var string
     */
    protected $keyName = 'id';

    /**
     * View for grid to render.
     *
     * @var string
     */
    protected $view = 'admin::grid.table2';

    /**
     * @var Closure
     */
    protected $header;

    /**
     * @var Closure
     */
    protected $footer;

    /**
     * @var Closure
     */
    protected $wrapper;

    /**
     * @var Responsive
     */
    protected $responsive;

    /**
     * @var bool
     */
    protected $addNumberColumn = false;

    /**
     * @var string
     */
    protected $tableId = 'grid-table';

    /**
     * @var Grid\Tools\RowSelector
     */
    protected $rowSelector;

    /**
     * Options for grid.
     *
     * @var array
     */
    protected $options = [
        'show_pagination'        => true,
        'show_filter'            => true,
        'show_actions'           => true,
        'show_quick_edit_button' => false,
        'show_edit_button'       => true,
        'show_view_button'       => true,
        'show_delete_button'     => true,
        'show_row_selector'      => true,
        'show_create_button'     => true,
        'show_bordered'          => false,
        'show_toolbar'           => true,
        'create_mode'            => self::CREATE_MODE_DEFAULT,
        'dialog_form_area'       => ['700px', '670px'],
        'table_header_style'     => 'table-header-gray',
    ];

    /**
     * Create a new grid instance.
     *
     * Grid constructor.
     *
     * @param Repository|\Illuminate\Database\Eloquent\Model|Builder|null $repository
     * @param null|\Closure                                       $builder
     */
    public function __construct($repository = null, ?\Closure $builder = null)
    {
        $this->model = new Model(request(), $repository);
        $this->columns = new Collection();
        $this->rows = new Collection();
        $this->builder = $builder;

        if ($repository = $this->model->repository()) {
            $this->setKeyName($repository->getKeyName());
        }

        $this->model->setGrid($this);

        $this->setupTools();
        $this->setupFilter();

        $this->callResolving();
    }

    /**
     * Get table ID.
     *
     * @return string
     */
    public function getTableId()
    {
        return $this->tableId;
    }

    /**
     * Set primary key name.
     *
     * @param string $name
     *
     * @return $this
     */
    public function setKeyName(string $name)
    {
        $this->keyName = $name;

        return $this;
    }

    /**
     * Get or set primary key name.
     *
     * @return string|void
     */
    public function getKeyName()
    {
        return $this->keyName ?: 'id';
    }

    /**
     * Add column to Grid.
     *
     * @param string $name
     * @param string $label
     *
     * @return Column
     */
    public function column($name, $label = '')
    {
        if (strpos($name, '.') !== false) {
            [$relationName, $relationColumn] = explode('.', $name);

            $label = empty($label) ? admin_trans_field($relationColumn) : $label;

            $name = Str::snake($relationName).'.'.$relationColumn;
        }

        $column = $this->addColumn($name, $label);

        return $column;
    }

    /**
     * Add number column.
     *
     * @param null|string $label
     *
     * @return Column
     */
    public function number(?string $label = null)
    {
        return $this->addColumn('#', $label ?: '#')->bold();
    }

    /**
     * Batch add column to grid.
     *
     * @example
     * 1.$grid->columns(['name' => 'Name', 'email' => 'Email' ...]);
     * 2.$grid->columns('name', 'email' ...)
     *
     * @param array $columns
     *
     * @return Collection|void
     */
    public function columns($columns = null)
    {
        if ($columns === null) {
            return $this->columns;
        }

        if (func_num_args() == 1 && is_array($columns)) {
            foreach ($columns as $column => $label) {
                $this->column($column, $label);
            }

            return;
        }

        foreach (func_get_args() as $column) {
            $this->column($column);
        }
    }

    /**
     * Add column to grid.
     *
     * @param string $field
     * @param string $label
     *
     * @return Column
     */
    protected function addColumn($field = '', $label = '')
    {
        $column = $this->newColumn($field, $label);

        $this->columns->put($field, $column);

        return $column;
    }

    /**
     * @param string $field
     * @param string $label
     *
     * @return Column
     */
    public function newColumn($field = '', $label = '')
    {
        $column = new Column($field, $label);
        $column->setGrid($this);

        return $column;
    }

    /**
     * Get Grid model.
     *
     * @return Model
     */
    public function model()
    {
        return $this->model;
    }

    /**
     * @return array
     */
    public function getColumnNames()
    {
        return $this->columnNames;
    }

    /**
     * Apply column filter to grid query.
     */
    protected function applyColumnFilter()
    {
        $this->columns->each->bindFilterQuery($this->model());
    }

    /**
     * Build the grid.
     *
     * @return void
     */
    public function build()
    {
        if ($this->built) {
            return;
        }

        $collection = $this->processFilter(false);

        $data = $collection->toArray();

        $this->prependRowSelectorColumn();
        $this->appendActionsColumn();

        Column::setOriginalGridModels($collection);

        $this->columns->map(function (Column $column) use (&$data) {
            $column->fill($data);

            $this->columnNames[] = $column->getName();
        });

        $this->buildRows($data);

        if ($data && $this->responsive) {
            $this->responsive->build();
        }

        $this->sortHeaders();
    }

    /**
     * @return void
     */
    protected function callBuilder()
    {
        if ($this->builder && ! $this->built) {
            call_user_func($this->builder, $this);
        }

        $this->built = true;
    }

    /**
     * Build the grid rows.
     *
     * @param array $data
     *
     * @return void
     */
    protected function buildRows(array $data)
    {
        $this->rows = collect($data)->map(function ($model) {
            return new Row($this, $model);
        });

        if ($this->rowsCallback) {
            foreach ($this->rowsCallback as $value) {
                $value($this->rows);
            }
        }
    }

    /**
     * Set grid row callback function.
     *
     * @param Closure $callable
     *
     * @return Collection|void
     */
    public function rows(Closure $callable = null)
    {
        if (is_null($callable)) {
            return $this->rows;
        }

        $this->rowsCallback[] = $callable;
    }

    /**
     * Get create url.
     *
     * @return string
     */
    public function getCreateUrl()
    {
        $queryString = '';

        if ($constraints = $this->model()->getConstraints()) {
            $queryString = http_build_query($constraints);
        }

        return sprintf(
            '%s/create%s',
            $this->resource(),
            $queryString ? ('?'.$queryString) : ''
        );
    }

    /**
     * @param \Closure $closure
     *
     * @return Grid\Tools\RowSelector
     */
    public function rowSelector()
    {
        return $this->rowSelector ?: ($this->rowSelector = new Grid\Tools\RowSelector($this));
    }

    /**
     * Prepend checkbox column for grid.
     *
     * @return void
     */
    protected function prependRowSelectorColumn()
    {
        if (! $this->options['show_row_selector']) {
            return;
        }

        $rowSelector = $this->rowSelector();
        $keyName = $this->getKeyName();

        $column = $this->newColumn(
            Grid\Column::SELECT_COLUMN_NAME,
            $rowSelector->renderHeader()
        );
        $column->setGrid($this);

        $column->display(function () use ($rowSelector, $keyName) {
            return $rowSelector->renderColumn($this, $this->{$keyName});
        });

        $this->columns->prepend($column, Grid\Column::SELECT_COLUMN_NAME);
    }

    /**
     * @param string $width
     * @param string $height
     *
     * @return $this
     */
    public function setDialogFormDimensions(string $width, string $height)
    {
        $this->options['dialog_form_area'] = [$width, $height];

        return $this;
    }

    /**
     * Render create button for grid.
     *
     * @return string
     */
    public function renderCreateButton()
    {
        if (! $this->options['show_create_button']) {
            return '';
        }

        return (new Tools\CreateButton($this))->render();
    }

    /**
     * @return $this
     */
    public function withBorder()
    {
        $this->options['show_bordered'] = true;

        return $this;
    }

    /**
     * Set grid header.
     *
     * @param Closure|string|Renderable $content
     *
     * @return $this|Closure
     */
    public function header($content = null)
    {
        if (! $content) {
            return $this->header;
        }

        $this->header = $content;

        return $this;
    }

    /**
     * Render grid header.
     *
     * @return string
     */
    public function renderHeader()
    {
        if (! $this->header) {
            return '';
        }

        $content = Helper::render($this->header, [$this->processFilter(false)]);

        if (empty($content)) {
            return '';
        }

        return <<<HTML
<div class="box-header clearfix" style="border-top:1px solid #ebeff2">{$content}</div>
HTML;
    }

    /**
     * Set grid footer.
     *
     * @param Closure|string|Renderable $content
     *
     * @return $this|Closure
     */
    public function footer($content = null)
    {
        if (! $content) {
            return $this->footer;
        }

        $this->footer = $content;

        return $this;
    }

    /**
     * Render grid footer.
     *
     * @return string
     */
    public function renderFooter()
    {
        if (! $this->footer) {
            return '';
        }

        $content = Helper::render($this->footer, [$this->processFilter(false)]);

        if (empty($content)) {
            return '';
        }

        return <<<HTML
<div class="box-footer clearfix">{$content}</div>
HTML;
    }

    /**
     * Get or set option for grid.
     *
     * @param string $key
     * @param mixed  $value
     *
     * @return $this|mixed
     */
    public function option($key, $value = null)
    {
        if (is_null($value)) {
            return $this->options[$key];
        }

        $this->options[$key] = $value;

        return $this;
    }

    /**
     * Disable row selector.
     *
     * @return $this
     */
    public function disableRowSelector(bool $disable = true)
    {
        $this->tools->disableBatchActions($disable);

        return $this->option('show_row_selector', ! $disable);
    }

    /**
     * Show row selector.
     *
     * @return $this
     */
    public function showRowSelector(bool $val = true)
    {
        return $this->disableRowSelector(! $val);
    }

    /**
     * Remove create button on grid.
     *
     * @return $this
     */
    public function disableCreateButton(bool $disable = true)
    {
        return $this->option('show_create_button', ! $disable);
    }

    /**
     * Show create button.
     *
     * @return $this
     */
    public function showCreateButton(bool $val = true)
    {
        return $this->disableCreateButton(! $val);
    }

    /**
     * If allow creation.
     *
     * @return bool
     */
    public function allowCreateButton()
    {
        return $this->options['show_create_button'];
    }

    /**
     * @param string $mode
     *
     * @return $this
     */
    public function createMode(string $mode)
    {
        return $this->option('create_mode', $mode);
    }

    /**
     * @return $this
     */
    public function enableDialogCreate()
    {
        return $this->createMode(self::CREATE_MODE_DIALOG);
    }

    /**
     * Get or set resource path.
     *
     * @param string $path
     *
     * @return $this|string
     */
    public function resource(string $path = null)
    {
        if ($path === null) {
            return $this->resourcePath ?: (
            $this->resourcePath = url(app('request')->getPathInfo())
            );
        }

        if (! empty($path)) {
            $this->resourcePath = admin_url($path);
        }

        return $this;
    }

    /**
     * Create a grid instance.
     *
     * @param mixed ...$params
     *
     * @return $this
     */
    public static function make(...$params)
    {
        return new static(...$params);
    }

    /**
     * Enable responsive tables.
     *
     * @see https://github.com/nadangergeo/RWD-Table-Patterns
     *
     * @return Responsive
     */
    public function responsive()
    {
        if (! $this->responsive) {
            $this->responsive = new Responsive($this);
        }

        return $this->responsive;
    }

    /**
     * @return bool
     */
    public function allowResponsive()
    {
        return $this->responsive ? true : false;
    }

    /**
     * @param Closure $closure
     *
     * @return $this;
     */
    public function wrap(\Closure $closure)
    {
        $this->wrapper = $closure;

        return $this;
    }

    /**
     * @return bool
     */
    public function hasWrapper()
    {
        return $this->wrapper ? true : false;
    }

    /**
     * Add variables to grid view.
     *
     * @param array $variables
     *
     * @return $this
     */
    public function with($variables = [])
    {
        $this->variables = $variables;

        return $this;
    }

    /**
     * Get all variables will used in grid view.
     *
     * @return array
     */
    protected function variables()
    {
        $this->variables['grid'] = $this;
        $this->variables['tableId'] = $this->getTableId();

        return $this->variables;
    }

    /**
     * Set a view to render.
     *
     * @param string $view
     * @param array  $variables
     */
    public function view($view, $variables = [])
    {
        if (! empty($variables)) {
            $this->with($variables);
        }

        $this->view = $view;
    }

    /**
     * Set grid title.
     *
     * @param string $title
     *
     * @return $this
     */
    public function title($title)
    {
        $this->variables['title'] = $title;

        return $this;
    }

    /**
     * Set grid description.
     *
     * @param string $description
     *
     * @return $this
     */
    public function description($description)
    {
        $this->variables['description'] = $description;

        return $this;
    }

    /**
     * Set resource path for grid.
     *
     * @param string $path
     *
     * @return $this
     */
    public function setResource($path)
    {
        $this->resourcePath = $path;

        return $this;
    }

    /**
     * Get the string contents of the grid view.
     *
     * @return string
     */
    public function render()
    {
        $this->handleExportRequest();

        try {
            $this->callComposing();

            $this->build();
        } catch (\Throwable $e) {
            return Admin::makeExceptionHandler()->renderException($e);
        }

        return $this->doWrap();
    }

    /**
     * @return string
     */
    protected function doWrap()
    {
        $view = view($this->view, $this->variables());

        if (! $wrapper = $this->wrapper) {
            return $view->render();
        }

        return $wrapper($view);
    }

    /**
     * Add column to grid.
     *
     * @param string $name
     *
     * @return Column
     */
    public function __get($name)
    {
        return $this->addColumn($name);
    }

    /**
     * Dynamically add columns to the grid view.
     *
     * @param $method
     * @param $arguments
     *
     * @return Column
     */
    public function __call($method, $arguments)
    {
        if (static::hasMacro($method)) {
            return $this->macroCall($method, $arguments);
        }

        return $this->addColumn($method, $arguments[0] ?? null);
    }
}