cx-newsletter/activities/4-edit_message_activity.php

<?php

namespace cx_newsletter;

class edit_message_activity 
extends activity {
    public function show_after_button() : string {
        return 'create';
    }

    public function inside_buttons() : array {
        return [ 'edit', 'save' ];
    }

    public function inside_inputs() : array {
        return [
            'id' => 'int',
            'title' => 'string',
            'content' => 'string'
        ];
    }

    public function get_site_template_name() : string {
        return 'edit_message';
    }

    public function prepare_edit() : void {
        if (!$this->is_validated('id')) {
            $this->error_toast('ID of the message to edit is wrong.');
            return;
        }
        
        $mapper = new messages_mapper(
            $this->get_database(),
            $this->get_tables()
        );

        $message = $mapper->complete(new message($this->get_validated('id')));

        $this->set('id', $message->get_id());
        $this->set('title', $message->title);
        $this->set('content', $message->content);
    }

    public function create() : void {
        $message = new message();
        $message->title = $this->get_validated('title');
        $message->content = stripslashes($this->get_validated('content'));

        $mapper = new messages_mapper(
            $this->get_database(),
            $this->get_tables()
        );

        try {
            $message = $mapper->create($message);
            $this->success_toast('Created successfull.');

            $this->set('id', $message->get_id());
            $this->set('title', $message->title);
            $this->set('content', $message->content);
        } catch (\exception $exception) {
            $this->error_toast($exception->getMessage());
        }
    }

    public function own_validation() : ?string {
        if (!$this->is_validated('title')) {
            return 'Title is not sended.';
        }

        if (!$this->is_validated('content')) {
            return 'Content is not sended.';
        }

        $title = $this->get_validated('title');
        $content = $this->get_validated('content');

        if ($this->is_validated('id')) {
            $this->set('id', $this->get_validated('id'));
        }

        if (strlen($title) < 8) {
            return 'Title must be longer than 8 characters.';
        }

        if (\esc_html($title) !== $title) {
            return 'Title can not has HTML characters.';
        }
        
        return null;
    }

    public function save() : void {
        $result = $this->own_validation();

        if ($result !== null) {
            $this->warning_toast($result);
            return;
        }

        if (!$this->is_validated('id')) {
            $this->create();
            return;
        }

        $mapper = new messages_mapper(
            $this->get_database(),
            $this->get_tables()
        );

        $message = new message($this->get_validated('id'));
        $message->title = $this->get_validated('title');
        $message->content = stripslashes($this->get_validated('content'));

        try {
            $mapper->save($message);
            $this->success_toast('Message saved.');

            $this->set('id', $message->get_id());
            $this->set('title', $message->title);
            $this->set('content', $message->content);
        } catch (\exception $exception) {
            $this->error_toast($exception->getMessage());
        }
    }

    public function process() : self {
        if ($this->is_validated('title')) {
            $this->set('title', $this->get_validated('title'));
        }

        if ($this->is_validated('content')) {
            $this->set(
                'content', 
                stripslashes($this->get_validated('content'))
            );
        }
        
        if ($this->is_validated('id')) {
            $this->set('id', $this->get_validated('id'));
        }
        
        if ($this->is_received('save')) {
            $this->save();
        }

        if ($this->is_received('edit')) {
            $this->prepare_edit();
        }

        $content = '';

        if ($this->get('content') !== null) {
            $content = $this->get('content');
        }

        \ob_start();
        \wp_editor($content, 'content', [
            'textarea_rows' => '',
            'quicktags' => false,
            'wpautoup' => false,
            'media_buttons' => true,
            'textarea_name' => 'content',
            'teeny' => true,
            'tinymce' => [
                'content_css' => false,
                'inline' => false
            ]
        ]);

        $result = \ob_get_clean();

        $this->set('editor', $result);

        return $this;
    }
}