<?php

namespace Dcat\Admin\Layout;

use Closure;
use Dcat\Admin\Admin;
use Dcat\Admin\Traits\HasBuilderEvents;
use Illuminate\Contracts\Support\Renderable;
use Illuminate\Support\ViewErrorBag;

class Content implements Renderable
{
    use HasBuilderEvents;

    /**
     * @var string
     */
    protected $view = 'admin::content';

    /**
     * Content title.
     *
     * @var string
     */
    protected $title = '';

    /**
     * Content description.
     *
     * @var string
     */
    protected $description = '';

    /**
     * Page breadcrumb.
     *
     * @var array
     */
    protected $breadcrumb = [];

    /**
     * @var Row[]
     */
    protected $rows = [];

    /**
     * Content constructor.
     *
     * @param Closure|null $callback
     */
    public function __construct(\Closure $callback = null)
    {
        $this->callResolving();

        if ($callback instanceof Closure) {
            $callback($this);
        }
    }

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

    /**
     * @param string $header
     *
     * @return $this
     */
    public function header($header = '')
    {
        return $this->title($header);
    }

    /**
     * Set title of content.
     *
     * @param string $title
     *
     * @return $this
     */
    public function title($title)
    {
        $this->title = $title;

        return $this;
    }

    /**
     * Set description of content.
     *
     * @param string $description
     *
     * @return $this
     */
    public function description($description = '')
    {
        $this->description = $description;

        return $this;
    }

    /**
     * Disable navbar and sidebar.
     *
     * @return $this
     */
    public function simple()
    {
        $this->view = 'admin::contents.simple';

        Admin::$disableSkinCss = true;

        return $this;
    }

    /**
     * Set breadcrumb of content.
     *
     * exp:
     *     $this->breadcrumb('Menu', 'auth/menu', 'fa fa-align-justify');
     *     $this->breadcrumb([
     *         ['text' => 'Menu', 'url' => 'auth/menu', 'icon' => 'fa fa-align-justify']
     *     ]);
     *
     * @param array ...$breadcrumb
     *
     * @return $this
     */
    public function breadcrumb(...$breadcrumb)
    {
        $this->formatBreadcrumb($breadcrumb);

        $this->breadcrumb = array_merge($this->breadcrumb, $breadcrumb);

        return $this;
    }

    /**
     * @param array $breadcrumb
     *
     * @throws \Exception
     *
     * @return void
     */
    protected function formatBreadcrumb(array &$breadcrumb)
    {
        if (! $breadcrumb) {
            throw new \Exception('Breadcrumb format error!');
        }

        $notArray = false;
        foreach ($breadcrumb as &$item) {
            $isArray = is_array($item);
            if ($isArray && ! isset($item['text'])) {
                throw new \Exception('Breadcrumb format error!');
            }
            if (! $isArray && $item) {
                $notArray = true;
            }
        }
        if (! $breadcrumb) {
            throw new \Exception('Breadcrumb format error!');
        }
        if ($notArray) {
            $breadcrumb = [
                [
                    'text' => $breadcrumb[0] ?? null,
                    'url'  => $breadcrumb[1] ?? null,
                    'icon' => $breadcrumb[2] ?? null,
                ],
            ];
        }
    }

    /**
     * Alias of method row.
     *
     * @param mixed $content
     *
     * @return Content
     */
    public function body($content)
    {
        return $this->row($content);
    }

    /**
     * Add one row for content body.
     *
     * @param $content
     *
     * @return $this
     */
    public function row($content)
    {
        if ($content instanceof Closure) {
            $row = new Row();
            call_user_func($content, $row);
            $this->addRow($row);
        } else {
            $this->addRow(new Row($content));
        }

        return $this;
    }

    /**
     * @param $content
     *
     * @return $this
     */
    public function prepend($content)
    {
        if ($content instanceof Closure) {
            $row = new Row();
            call_user_func($content, $row);
            $this->prependRow($row);
        } else {
            $this->prependRow(new Row($content));
        }

        return $this;
    }

    protected function prependRow(Row $row)
    {
        array_unshift($this->rows, $row);
    }

    /**
     * Add Row.
     *
     * @param Row $row
     */
    protected function addRow(Row $row)
    {
        $this->rows[] = $row;
    }

    /**
     * Build html of content.
     *
     * @return string
     */
    public function build()
    {
        $html = '';

        foreach ($this->rows as $row) {
            $html .= $row->render();
        }

        return $html;
    }

    /**
     * Set success message for content.
     *
     * @param string $title
     * @param string $message
     *
     * @return $this
     */
    public function withSuccess($title = '', $message = '')
    {
        admin_success($title, $message);

        return $this;
    }

    /**
     * Set error message for content.
     *
     * @param string $title
     * @param string $message
     *
     * @return $this
     */
    public function withError($title = '', $message = '')
    {
        admin_error($title, $message);

        return $this;
    }

    /**
     * Set warning message for content.
     *
     * @param string $title
     * @param string $message
     *
     * @return $this
     */
    public function withWarning($title = '', $message = '')
    {
        admin_warning($title, $message);

        return $this;
    }

    /**
     * Set info message for content.
     *
     * @param string $title
     * @param string $message
     *
     * @return $this
     */
    public function withInfo($title = '', $message = '')
    {
        admin_info($title, $message);

        return $this;
    }

    /**
     * Set content view.
     *
     * @param null|string $view
     *
     * @return $this
     */
    public function view(?string $view)
    {
        $this->view = $view;

        return $this;
    }

    /**
     * Setup styles.
     */
    protected function setupStyles()
    {
        if (
            $this->view !== 'admin::contents.simple'
            && in_array('fixed', (array) config('admin.layout'))
        ) {
            Admin::style(
                <<<'CSS'
#nprogress .spinner{position:fixed!important;top:75px;}#nprogress .bar{top:61px;}.fixed-solution .sticky-table-header{top:61px!important}
CSS
            );
        }
    }

    protected function shareDefaultErrors()
    {
        if (! session()->all()) {
            view()->share(['errors' => new ViewErrorBag()]);
        }
    }

    /**
     * Render this content.
     *
     * @return string
     */
    public function render()
    {
        $this->callComposing();
        $this->setupStyles();
        $this->shareDefaultErrors();

        $items = [
            'header'      => $this->title,
            'description' => $this->description,
            'breadcrumb'  => $this->breadcrumb,
            'content'     => $this->build(),
        ];

        return view($this->view, $items)->render();
    }
}