'wpforms-lite' ),
			'activate_now'             => esc_html__( 'Activate Now', 'wpforms-lite' ),
			'download_now'             => esc_html__( 'Download Now', 'wpforms-lite' ),
			'plugins_page'             => esc_html__( 'Go to Plugins page', 'wpforms-lite' ),
			'error_could_not_install'  => $error_could_not_install,
			'error_could_not_activate' => $error_could_not_activate,
			static::get_plugin_name() . '_manual_install_url' => $this->config['lite_download_url'],
			static::get_plugin_name() . '_manual_activate_url' => admin_url( 'plugins.php' ),
		];
	}

	/**
	 * Get the plugin name for use in IDs, CSS classes, and config keys.
	 *
	 * @since 1.9.8.6
	 *
	 * @return string Plugin name.
	 */
	abstract protected static function get_plugin_name(): string;

	/**
	 * Generate and output heading section HTML.
	 *
	 * @since 1.9.8.6
	 *
	 * @noinspection HtmlUnknownTarget
	 */
	public function output_section_heading(): void {

		$strings = $this->get_heading_strings();

		// Heading section.
		printf(
			'<section class="top">
				<img class="img-top" src="%1$s" alt="%2$s"/>
				<h1>%3$s</h1>
				<p>%4$s</p>
			</section>',
			esc_url( $this->get_heading_image_url() ),
			esc_attr( $this->get_heading_alt_text() ),
			esc_html( $this->get_heading_title() ),
			esc_html( implode( ' ', $strings ) )
		);
	}

	/**
	 * Get heading image URL.
	 *
	 * @since 1.9.8.6
	 *
	 * @return string Heading image URL.
	 */
	protected function get_heading_image_url(): string {

		return WPFORMS_PLUGIN_URL . 'assets/images/' . static::get_plugin_name() . '/wpforms-' . static::get_plugin_name() . '.svg';
	}

	/**
	 * Get heading title text.
	 *
	 * @since 1.9.8.6
	 *
	 * @return string Heading title.
	 */
	abstract protected function get_heading_title(): string;

	/**
	 * Get heading alt text for logo.
	 *
	 * @since 1.9.8.6
	 *
	 * @return string Heading alt text.
	 */
	abstract protected function get_heading_alt_text(): string;

	/**
	 * Get heading description strings.
	 *
	 * @since 1.9.8.6
	 *
	 * @return array Array of description strings.
	 */
	abstract protected function get_heading_strings(): array;

	/**
	 * Generate and output screenshot section HTML.
	 *
	 * @since 1.9.8.6
	 */
	protected function output_section_screenshot(): void {

		$features = $this->get_screenshot_features();

		$list = '';

		foreach ( $features as $feature ) {
			$list .= '<li>' . esc_html( $feature ) . '</li>';
		}

		// Screenshot section.
		printf(
			'<section class="screenshot">
				<div class="cont">
					<img src="%1$s" alt="%2$s" srcset="%4$s 2x"/>
					<a href="%3$s" class="hover" data-lity></a>
				</div>
				<ul>%5$s</ul>
			</section>',
			esc_url( WPFORMS_PLUGIN_URL . 'assets/images/' . static::get_plugin_name() . '/screenshot-tnail.png' ),
			esc_attr( $this->get_screenshot_alt_text() ),
			esc_url( WPFORMS_PLUGIN_URL . 'assets/images/' . static::get_plugin_name() . '/screenshot-full@2x.png' ),
			esc_url( WPFORMS_PLUGIN_URL . 'assets/images/' . static::get_plugin_name() . '/screenshot-tnail@2x.png' ),
			wp_kses( $list, [ 'li' => [] ] )
		);
	}

	/**
	 * Get screenshot features list.
	 *
	 * @since 1.9.8.6
	 *
	 * @return array Array of feature strings.
	 */
	abstract protected function get_screenshot_features(): array;

	/**
	 * Get screenshot alt text.
	 *
	 * @since 1.9.8.6
	 *
	 * @return string Alt text for screenshot image.
	 */
	abstract protected function get_screenshot_alt_text(): string;

	/**
	 * Generate and output step 'Result' section HTML.
	 *
	 * @since 1.9.8.6
	 */
	abstract protected function output_section_step_result(): void;

	/**
	 * Whether a plugin is configured or not.
	 *
	 * @since 1.9.8.6
	 *
	 * @return bool True if a plugin is configured properly.
	 */
	abstract protected function is_plugin_configured(): bool;

	/**
	 * Whether a plugin is active or not.
	 *
	 * @since 1.9.8.6
	 *
	 * @return bool True if the plugin is active.
	 */
	abstract protected function is_plugin_activated(): bool;

	/**
	 * Whether a plugin is finished setup or not.
	 *
	 * @since 1.9.8.6
	 *
	 * @return bool True if the plugin is finished setup.
	 */
	abstract protected function is_plugin_finished_setup(): bool;

	/**
	 * Whether a plugin is available (class/function exists).
	 *
	 * @since 1.9.8.6
	 *
	 * @return bool True if a plugin is available.
	 */
	abstract protected function is_plugin_available(): bool;

	/**
	 * Whether a pro-version is active.
	 *
	 * @since 1.9.8.6
	 *
	 * @return bool True if a pro-version is active.
	 */
	abstract protected function is_pro_active(): bool;

	/**
	 * Get the heading for the installation step.
	 *
	 * @since 1.9.8.6
	 *
	 * @return string Install step heading.
	 */
	abstract protected function get_install_heading(): string;

	/**
	 * Get the description for the installation step.
	 *
	 * @since 1.9.8.6
	 *
	 * @return string Install step description.
	 */
	abstract protected function get_install_description(): string;

	/**
	 * Get the plugin title.
	 *
	 * @since 1.9.8.6
	 *
	 * @return string Plugin title.
	 */
	abstract protected function get_plugin_title(): string;

	/**
	 * Get the installation button text.
	 *
	 * @since 1.9.8.6
	 *
	 * @return string Install button text.
	 */
	abstract protected function get_install_button_text(): string;

	/**
	 * Get the text when a plugin is installed and activated.
	 *
	 * @since 1.9.8.6
	 *
	 * @return string Installed & activated text.
	 */
	abstract protected function get_installed_activated_text(): string;

	/**
	 * Get the activate button text.
	 *
	 * @since 1.9.8.6
	 *
	 * @return string Activate button text.
	 */
	abstract protected function get_activate_text(): string;

	/**
	 * Get the heading for the setup step.
	 *
	 * @since 1.9.8.6
	 *
	 * @return string Setup step heading.
	 */
	abstract protected function get_setup_heading(): string;

	/**
	 * Get the description for the setup step.
	 *
	 * @since 1.9.8.6
	 *
	 * @return string Setup step description.
	 */
	abstract protected function get_setup_description(): string;

	/**
	 * Get the setup button text.
	 *
	 * @since 1.9.8.6
	 *
	 * @return string Setup button text.
	 */
	abstract protected function get_setup_button_text(): string;

	/**
	 * Get the text when setup is completed.
	 *
	 * @since 1.9.8.6
	 *
	 * @return string Setup completed text.
	 */
	abstract protected function get_setup_completed_text(): string;

	/**
	 * Get the text when a pro-version is installed and activated.
	 *
	 * @since 1.9.8.6
	 *
	 * @return string Pro installed and activated text.
	 */
	abstract protected function get_pro_installed_activated_text(): string;
}