<?php

namespace bff\view;

use Closure;

/**
 * Breadcrumbs block
 * @copyright Tamaranga
 */
class Breadcrumbs extends Block
{
    /**
     * Crumbs data
     * @var array
     */
    public $crumbs = [];

    /**
     * Active crumb is a link
     * @var bool
     */
    public $activeIsLink = false;

    /**
     * Last crumb should be active
     * @var bool
     */
    public $activateLast = true;

    /**
     * Index page url
     * @var string
     */
    public $indexUrl = '';

    /**
     * Index page title
     * @var string
     */
    public $indexTitle = '';

    /**
     * Crumb title key
     * @var string
     */
    public $titleKey = 'title';

    public function init()
    {
        parent::init();

        $this->setTemplate('breadcrumbs');
    }

    public function data()
    {
        $data = parent::data();

        if ($this->activateLast) {
            $data['crumbs'][array_key_last($data['crumbs'])]['active'] = true;
        }

        return $data;
    }

    /**
     * Add Crumb
     * @param string $title
     * @param string $link
     * @param array $opts
     * @return bool
     */
    public function add(string $title, string $link = '', array $opts = [])
    {
        if ($title === '') {
            return false;
        }

        $crumb = $this->defaults($opts, [
            $this->titleKey => $title,
            'link' => $link,
            'link_title' => $title,
            'active' => false,
        ]);

        $key = $opts['key'] ?? null;
        if ($key) {
            $this->crumbs[$key] = $crumb;
        } else {
            $this->crumbs[] = $crumb;
        }

        return true;
    }

    /**
     * Add list of crumbs
     * @param array $crumbs
     * @param Closure|null $transform
     * @return static
     */
    public function fill(array $crumbs, ?Closure $transform = null)
    {
        if ($transform) {
            foreach ($crumbs as $key => $crumb) {
                $crumbs[$key] = $transform($crumb, $key);
            }
        }

        foreach ($crumbs as $crumb) {
            if (is_array($crumb)) {
                $this->add($crumb['title'] ?? '', $crumb['link'] ?? '', $crumb);
            }
        }

        return $this;
    }

    /**
     * Update crumb data
     * @param array $data
     * @param mixed|null $key crumb key or null (last)
     * @return static
     */
    public function update(array $data, $key = null)
    {
        $key = $key ?? array_key_last($this->crumbs);

        if (array_key_exists($key, $this->crumbs)) {
            $this->crumbs[$key] = array_merge($this->crumbs[$key], $data);
        }

        return $this;
    }

    /**
     * Reset crumbs list
     * @return static
     */
    public function reset()
    {
        $this->crumbs = [];

        return $this;
    }

    /**
     * Get crumbs list
     * @return array
     */
    public function get()
    {
        return $this->crumbs;
    }
}