<?php

declare(strict_types=1);

namespace org\wplake\acf_views;

defined('ABSPATH') || exit;

use org\wplake\acf_views\AcfCard\AcfCards;
use org\wplake\acf_views\AcfGroups\AcfCardData;
use org\wplake\acf_views\AcfGroups\AcfViewData;
use org\wplake\acf_views\AcfGroups\DemoGroup;
use org\wplake\acf_views\AcfGroups\Field;
use org\wplake\acf_views\AcfGroups\Item;
use org\wplake\acf_views\AcfView\AcfViews;
use org\wplake\acf_views\AcfView\Post;

class DemoImport
{
    private int $pageId;
    private int $bookViewId;
    private int $postViewId;
    private int $postCardId;
    private int $groupId;
    private string $error;
    private bool $isProcessed;
    private AcfViews $acfViews;
    private Options $options;
    private bool $isImportRequest;
    private AcfViewData $acfViewData;
    private Item $item;
    private AcfCardData $acfCardData;
    private AcfCards $acfCards;

    public function __construct(
        AcfViews $acfViews,
        Options $options,
        AcfViewData $acfViewData,
        Item $item,
        AcfCardData $acfCardData,
        AcfCards $acfCards
    ) {
        $this->acfViews        = $acfViews;
        $this->options         = $options;
        $this->pageId          = 0;
        $this->groupId         = 0;
        $this->bookViewId      = 0;
        $this->postViewId      = 0;
        $this->postCardId      = 0;
        $this->error           = '';
        $this->isProcessed     = false;
        $this->isImportRequest = false;
        $this->acfViewData     = $acfViewData->getDeepClone();
        $this->item            = $item->getDeepClone();
        $this->acfCardData     = $acfCardData->getDeepClone();
        $this->acfCards        = $acfCards;
    }

    protected function addError(string $error): void
    {
        $this->error .= $error;
    }

    protected function createPage(): void
    {
        $pageId = wp_insert_post([
                                     'post_type'   => 'page',
                                     'post_status' => 'draft',
                                     'post_title'  => 'ACF Views Demo Page',
                                 ]);
        if (is_wp_error($pageId)) {
            $this->addError('Fail to create a post');

            return;
        }

        $this->pageId = $pageId;
    }

    protected function createAcfViews(): void
    {
        $bookViewId = wp_insert_post([
                                         'post_type'   => AcfViews::NAME,
                                         'post_status' => 'publish',
                                         'post_title'  => 'Book Demo View',
                                     ]);
        $postViewId = wp_insert_post([
                                         'post_type'   => AcfViews::NAME,
                                         'post_status' => 'publish',
                                         'post_title'  => 'Post Demo View',
                                     ]);
        if (is_wp_error($bookViewId) ||
            is_wp_error($postViewId)) {
            $this->addError('Fail to create a post');

            return;
        }

        $this->bookViewId = $bookViewId;
        $this->postViewId = $postViewId;
    }

    protected function createAcfCard(): void
    {
        $cardId = wp_insert_post([
                                     'post_type'   => AcfCards::NAME,
                                     'post_status' => 'publish',
                                     'post_title'  => 'Post Demo Card',
                                 ]);
        if (is_wp_error($cardId)) {
            $this->addError('Fail to create a post');

            return;
        }

        $this->postCardId = $cardId;
    }

    protected function importAcfGroup(): array
    {
        $groupJSON                            = DemoGroup::getGroupInfo();
        $groupJSON['title']                   = 'ACF Views "Book" Demo Group';
        $groupJSON['location'][0][0]['value'] = $this->pageId;
        unset($groupJSON['key']);
        foreach ($groupJSON['fields'] as &$field) {
            $field['key'] = uniqid('field_');
        }

        $groupJSON = acf_import_field_group($groupJSON);

        if (! isset($groupJSON['ID'])) {
            $this->addError('Fail to import an ACF group');

            return [];
        }

        $this->groupId = (int)$groupJSON['ID'];

        return $groupJSON;
    }

    protected function fillBookAcfView(array $groupData): void
    {
        $view = $this->acfViewData->getDeepClone();
        $view->load($this->bookViewId);

        $view->description = 'It\'s a demo ACF View to display fields the demo "Book" ACF Field Group';

        $bookItem               = $this->item->getDeepClone();
        $bookItem->group        = $groupData['key'];
        $bookItem->field->label = 'Book:';
        $bookItem->field->key   = Field::createKey($groupData['key'], $groupData['fields'][0]['key']);
        $view->items[]          = $bookItem;

        $publishYearItem               = $this->item->getDeepClone();
        $publishYearItem->group        = $groupData['key'];
        $publishYearItem->field->label = 'Publish year:';
        $publishYearItem->field->key   = Field::createKey(
            $groupData['key'],
            $groupData['fields'][1]['key']
        );
        $view->items[]                 = $publishYearItem;

        $authorItem               = $this->item->getDeepClone();
        $authorItem->group        = $groupData['key'];
        $authorItem->field->label = 'Author:';
        $authorItem->field->key   = Field::createKey($groupData['key'], $groupData['fields'][2]['key']);
        $view->items[]            = $authorItem;

        $view->cssCode = "#view {\n padding: 30px;\n color: #444444;\n}\n\n" .
                         "#view .acf-view__row {\n display:flex;\n}\n\n" .
                         "#view .acf-view__label {\n font-weight: bold;\n padding-right: 10px;\n}\n\n";

        $view->save();

        $this->acfViews->performSaveActions($this->bookViewId);
    }

    protected function fillPostAcfView(): void
    {
        $view = $this->acfViewData->getDeepClone();
        $view->load($this->postViewId);

        $view->description = 'It\'s a demo ACF View to display a "Post" object';

        $featuredImage             = $this->item->getDeepClone();
        $featuredImage->group      = Acf::GROUP_POST;
        $featuredImage->field->key = Field::createKey(Acf::GROUP_POST, Post::FIELD_THUMBNAIL);
        $view->items[]             = $featuredImage;

        $titleLink             = $this->item->getDeepClone();
        $titleLink->group      = Acf::GROUP_POST;
        $titleLink->field->key = Field::createKey(Acf::GROUP_POST, Post::FIELD_TITLE_LINK);
        $view->items[]         = $titleLink;

        $excerpt             = $this->item->getDeepClone();
        $excerpt->group      = Acf::GROUP_POST;
        $excerpt->field->key = Field::createKey(Acf::GROUP_POST, Post::FIELD_EXCERPT);
        $view->items[]       = $excerpt;

        $date             = $this->item->getDeepClone();
        $date->group      = Acf::GROUP_POST;
        $date->field->key = Field::createKey(Acf::GROUP_POST, Post::FIELD_DATE);
        $view->items[]    = $date;

        $view->cssCode = "#view .acf-card__items {\n display:flex;\n flex-direction:column;\n}\n\n" .
                         "#view ._thumbnail_id img {\n width:100%;\n height:300px;\n object-fit:cover;\n}\n\n" .
                         "#view ._post_title_link a {\n display:block;\n margin:10px 0;\n color:#008BB7;\n}\n\n" .
                         "#view ._post_date {\n margin:10px 0 0;\n font-weight:bold;\n}\n\n";

        $view->save();

        $this->acfViews->performSaveActions($this->postViewId);
    }

    protected function fillPostAcfCard(): void
    {
        $acfCard = $this->acfCardData->getDeepClone();
        $acfCard->load($this->postCardId);

        $acfCard->description = 'It\'s a demo ACF Card to display 3 latest posts';

        $acfCard->acfViewId = $this->postViewId;

        $acfCard->limit       = 3;
        $acfCard->postTypes[] = 'post';
        $acfCard->order       = 'DESC';
        $acfCard->orderBy     = 'date';

        $acfCard->cssCode = "#card .acf-card__items {\n display:flex;\n}\n\n" .
                            "#card .acf-view {\n flex-basis:33%;\n flex-shrink:0;\n padding:10px 20px;\n}\n\n";

        $acfCard->save();

        $this->acfCards->performSaveActions($this->postCardId);
    }

    protected function fillPage(array $groupData): void
    {
        update_field($groupData['fields'][0]['key'], 'Fahrenheit 451', $this->pageId);
        update_field($groupData['fields'][1]['key'], '1953', $this->pageId);
        update_field($groupData['fields'][2]['key'], 'Ray Bradbury', $this->pageId);

        $postContent = '<!-- wp:heading --><h2>"Book" ACF View</h2><!-- /wp:heading -->';
        $postContent .= '<!-- wp:shortcode -->[acf_views view-id="' . $this->bookViewId . '"]<!-- /wp:shortcode -->';
        $postContent .= '<!-- wp:heading --><h2>"Posts" ACF Card</h2><!-- /wp:heading -->';
        $postContent .= '<!-- wp:shortcode -->[acf_cards card-id="' . $this->postCardId . '"]<!-- /wp:shortcode -->';

        wp_update_post([
                           'ID'           => $this->pageId,
                           'post_content' => $postContent,
                       ]);
    }

    protected function saveIDsToOptions(): void
    {
        $this->options->updateOption(Options::DEMO_IMPORT, [
            'pageId'     => $this->pageId,
            'groupId'    => $this->groupId,
            'bookViewId' => $this->bookViewId,
            'postViewId' => $this->postViewId,
            'postCardId' => $this->postCardId,
        ]);
    }

    public function setHooks(): void
    {
        add_action('wp_loaded', function () {
            if (! isset($_POST['_av-demo-import'])) {
                return;
            }

            check_admin_referer('_av-demo-import');

            $isImport = isset($_POST['_import']);
            $isDelete = isset($_POST['_delete']);

            ! $isImport || $this->import();
            $isImport || ! $isDelete || $this->delete();
        });
    }

    public function readIDsFromOptions(): void
    {
        $option = $this->options->getOption(Options::DEMO_IMPORT);
        if (! is_array($option) ||
            ! key_exists('pageId', $option) ||
            ! key_exists('groupId', $option) ||
            ! key_exists('bookViewId', $option) ||
            ! key_exists('postViewId', $option) ||
            ! key_exists('postCardId', $option)) {
            return;
        }

        $this->pageId     = (int)$option['pageId'];
        $this->groupId    = (int)$option['groupId'];
        $this->bookViewId = (int)$option['bookViewId'];
        $this->postViewId = (int)$option['postViewId'];
        $this->postCardId = (int)$option['postCardId'];
    }

    public function import(): void
    {
        $this->isProcessed     = true;
        $this->isImportRequest = true;

        // page should be created first of all
        $this->createPage();

        $groupData = $this->importAcfGroup();
        $this->isHasError() || $this->createAcfViews();
        $this->isHasError() || $this->createAcfCard();

        $this->isHasError() || $this->fillBookAcfView($groupData);
        $this->isHasError() || $this->fillPostAcfView();
        $this->isHasError() || $this->fillPostAcfCard();
        $this->isHasError() || $this->fillPage($groupData);

        $this->isHasError() || $this->saveIDsToOptions();
    }

    public function delete(): void
    {
        $this->readIDsFromOptions();

        if (! $this->isHasData()) {
            return;
        }

        $this->isProcessed = true;

        // force to bypass a trash
        wp_delete_post($this->pageId, true);
        wp_delete_post($this->groupId, true);
        wp_delete_post($this->bookViewId, true);
        wp_delete_post($this->postViewId, true);
        wp_delete_post($this->postCardId, true);

        $this->options->deleteOption(Options::DEMO_IMPORT);

        $this->pageId     = 0;
        $this->groupId    = 0;
        $this->bookViewId = 0;
        $this->postViewId = 0;
        $this->postCardId = 0;
    }

    public function isHasError(): bool
    {
        return ! ! $this->error;
    }

    public function getError(): string
    {
        return $this->error;
    }

    public function isProcessed(): bool
    {
        return $this->isProcessed;
    }

    public function isHasData(): bool
    {
        return ! ! $this->pageId;
    }

    public function isImportRequest(): bool
    {
        return $this->isImportRequest;
    }

    public function getPageLink(): string
    {
        return (string)get_the_permalink($this->pageId);
    }

    public function getAcfGroupLink(): string
    {
        return (string)get_edit_post_link($this->groupId);
    }

    public function getBookAcfViewLink(): string
    {
        return (string)get_edit_post_link($this->bookViewId);
    }

    public function getPostAcfViewLink(): string
    {
        return (string)get_edit_post_link($this->postViewId);
    }

    public function getPostAcfCardLink(): string
    {
        return (string)get_edit_post_link($this->postCardId);
    }
}