<?php
declare(strict_types=1);

use PHPUnit\Framework\TestCase;

/**
 * Unit test: WPDO_Capability (v2.14.0).
 *
 * Verifies the multisite-aware admin capability gate:
 *   - Single-site: only `manage_options` decides
 *   - Multisite per-site: only `manage_options` decides
 *   - Multisite network: super admin always passes; site admin still passes
 *     on their own site if they hold `manage_options`
 */
class CapabilityTest extends TestCase {

	protected function setUp(): void {
		// Reset all multisite globals before each test.
		unset(
			$GLOBALS['_wp_is_multisite'],
			$GLOBALS['_wp_is_super_admin'],
			$GLOBALS['_wp_current_user_can']
		);
	}

	// ── Single-site behaviour ────────────────────────────────────────────────

	public function test_single_site_admin_passes(): void {
		$GLOBALS['_wp_is_multisite']     = false;
		$GLOBALS['_wp_current_user_can'] = array( 'manage_options' => true );

		$this->assertTrue( WPDO_Capability::current_user_can_admin() );
	}

	public function test_single_site_subscriber_blocked(): void {
		$GLOBALS['_wp_is_multisite']     = false;
		$GLOBALS['_wp_current_user_can'] = array( 'manage_options' => false );

		$this->assertFalse( WPDO_Capability::current_user_can_admin() );
	}

	// ── Multisite per-site behaviour ─────────────────────────────────────────

	public function test_multisite_site_admin_passes_with_manage_options(): void {
		$GLOBALS['_wp_is_multisite']     = true;
		$GLOBALS['_wp_is_super_admin']   = false;
		$GLOBALS['_wp_current_user_can'] = array( 'manage_options' => true );

		$this->assertTrue( WPDO_Capability::current_user_can_admin() );
	}

	public function test_multisite_subscriber_blocked(): void {
		$GLOBALS['_wp_is_multisite']     = true;
		$GLOBALS['_wp_is_super_admin']   = false;
		$GLOBALS['_wp_current_user_can'] = array( 'manage_options' => false );

		$this->assertFalse( WPDO_Capability::current_user_can_admin() );
	}

	// ── Multisite super-admin behaviour ──────────────────────────────────────

	public function test_multisite_super_admin_passes_without_manage_options(): void {
		// Pre-v2.14.0 this returned false because super admins don't auto-have
		// `manage_options` in network admin context. v2.14.0 fixes this.
		$GLOBALS['_wp_is_multisite']     = true;
		$GLOBALS['_wp_is_super_admin']   = true;
		$GLOBALS['_wp_current_user_can'] = array( 'manage_options' => false );

		$this->assertTrue( WPDO_Capability::current_user_can_admin() );
	}

	public function test_multisite_super_admin_passes_with_manage_options(): void {
		$GLOBALS['_wp_is_multisite']     = true;
		$GLOBALS['_wp_is_super_admin']   = true;
		$GLOBALS['_wp_current_user_can'] = array( 'manage_options' => true );

		$this->assertTrue( WPDO_Capability::current_user_can_admin() );
	}

	// ── Edge: super admin flag set on single-site (shouldn't be possible
	//        but should be defensive) ────────────────────────────────────────

	public function test_super_admin_flag_ignored_on_single_site(): void {
		// Super admin only exists on multisite; on single-site fall back to
		// manage_options check.
		$GLOBALS['_wp_is_multisite']     = false;
		$GLOBALS['_wp_is_super_admin']   = true;
		$GLOBALS['_wp_current_user_can'] = array( 'manage_options' => false );

		$this->assertFalse( WPDO_Capability::current_user_can_admin() );
	}
}