<?php
namespace Consiva\Consent;

if ( ! defined( 'ABSPATH' ) ) {
	exit;
}

use Consiva\Consent\Api\Availability;
use Consiva\Consent\Support\Capabilities;
use Consiva\Consent\Admin\Assets;
use Consiva\Consent\Admin\Onboarding;
use Consiva\Consent\Admin\Dashboard;
use Consiva\Consent\Admin\EvidencePanel;
use Consiva\Consent\Admin\FormsScreen;
use Consiva\Consent\Admin\NetworkOverview;
use Consiva\Consent\Admin\ActivationNotice;
use Consiva\Consent\Admin\BufferConflictNotice;
use Consiva\Consent\Admin\Screens;
use Consiva\Consent\Admin\SetupScreen;
use Consiva\Consent\Admin\UninstallFeedback;
use Consiva\Consent\Consent\CategoryMap;
use Consiva\Consent\Consent\LocalBuffer;
use Consiva\Consent\Integrations\Forms\Registry;
use Consiva\Consent\Integrations\WooCommerce\CheckoutConsent;
use Consiva\Consent\Integrations\Wp\Eraser;
use Consiva\Consent\Integrations\Wp\Exporter;
use Consiva\Consent\Integrations\Wp\PrivacyPolicyText;
use Consiva\Consent\Frontend\InlineBootstrap;
use Consiva\Consent\Frontend\OutputGate;
use Consiva\Consent\Frontend\RuntimeLoader;
use Consiva\Consent\Integrations\Optimizers\Exclusions;
use Consiva\Consent\Frontend\ScriptGate;
use Consiva\Consent\Frontend\VerificationEndpoint;
use Consiva\Consent\Health\Diagnostics;
use Consiva\Consent\Health\Heartbeat;
use Consiva\Consent\Health\SiteHealthTests;
use Consiva\Consent\Rest\Controller;

/**
 * Container and hook registration.
 */
final class Plugin {

	/**
	 * Singleton instance.
	 *
	 * @var Plugin|null
	 */
	private static $instance = null;

	/**
	 * Boots the plugin on plugins_loaded.
	 *
	 * @return Plugin
	 */
	public static function boot() {
		if ( null === self::$instance ) {
			self::$instance = new self();
		}
		return self::$instance;
	}

	/**
	 * Registers every component's hooks. Admin screens only in the admin; the rest everywhere.
	 */
	private function __construct() {
		( new Capabilities() )->register(); // §9.1: consiva_manage_privacy / consiva_view_privacy.
		( new VerificationEndpoint() )->register();
		( new Heartbeat() )->register(); // Runs under WP-Cron, so not admin-only.
		( new SiteHealthTests() )->register(); // Also needed on REST requests (the async test).
		( new Diagnostics() )->register();
		( new Controller() )->register(); // REST requests are not is_admin(); routes check capabilities.
		if ( Availability::has( Availability::UNINSTALL_FEEDBACK ) ) {
			( new UninstallFeedback() )->register(); // Its REST route must exist on REST requests too.
		}

		// Front end: reads cached options only, never calls Consiva (§8.1).
		( new InlineBootstrap() )->register();
		( new RuntimeLoader() )->register();
		( new ScriptGate() )->register();
		( new OutputGate() )->register(); // Blocking slice 2: hard-coded scripts and embeds (§6.2).
		( new Exclusions() )->register(); // Keeps caching/optimisation plugins off the plugin's tags (§8.6).
		add_action( CategoryMap::REFRESH_HOOK, array( CategoryMap::class, 'refresh' ) );

		// Server-side consent: form opt-ins (§10) and the checkout opt-in (§7), sent via the local buffer (§8.3).
		( new Registry() )->register();
		( new CheckoutConsent() )->register();
		( new LocalBuffer() )->register();

		// WordPress Privacy API (§9.6): export/erase personal data (only once Consiva has a lookup and
		// erase route for it), suggested policy text.
		if ( Availability::has( Availability::PRIVACY_TOOLS ) ) {
			( new Exporter() )->register();
			( new Eraser() )->register();
		}
		( new PrivacyPolicyText() )->register();

		if ( is_admin() ) {
			( new Screens() )->register();
			( new BufferConflictNotice() )->register(); // Page-rewrite fallback after buffer conflicts (§6.2).
			( new ActivationNotice() )->register(); // Requirements and conflicting plugins, once after activating (§9.7).
			( new Onboarding() )->register();
			( new SetupScreen() )->register();
			( new Dashboard() )->register();
			( new EvidencePanel() )->register();
			( new FormsScreen() )->register();
			if ( is_multisite() ) {
				( new NetworkOverview() )->register(); // Plugin §8.5: read-only status across the network.
			}
			( new Assets() )->register();
		}
	}
}