<?php
declare(strict_types=1);

use PHPUnit\Framework\TestCase;

/**
 * Tests for WPDO_HivePress_Conflict_Guard — legacy hp-* plugin detection.
 *
 * @covers WPDO_HivePress_Conflict_Guard
 */
class HivePressConflictGuardTest extends TestCase {

	protected function setUp(): void {
		WPDO_HivePress_Conflict_Guard::reset_for_tests();
	}

	public function test_no_conflicts_when_legacy_plugins_absent(): void {
		// Neither HPCT_Core nor HP_Info_Cards are loaded in the test env.
		$conflicts = WPDO_HivePress_Conflict_Guard::detect_conflicts();
		$this->assertSame( array(), $conflicts );
		$this->assertFalse( WPDO_HivePress_Conflict_Guard::has_conflict() );
	}

	public function test_conflict_detected_when_hpct_const_defined(): void {
		// Simulate hp-custom-tables presence via constant probe.
		if ( ! defined( 'HPCT_VERSION' ) ) {
			define( 'HPCT_VERSION', '1.0.0' );
		}
		WPDO_HivePress_Conflict_Guard::reset_for_tests();
		$conflicts = WPDO_HivePress_Conflict_Guard::detect_conflicts();
		$this->assertContains( 'hp-custom-tables', $conflicts );
		$this->assertTrue( WPDO_HivePress_Conflict_Guard::has_conflict() );
	}

	public function test_check_and_warn_safe_when_no_conflicts(): void {
		WPDO_HivePress_Conflict_Guard::reset_for_tests();
		// Should not throw or render anything when clean.
		$this->expectOutputString( '' );
		WPDO_HivePress_Conflict_Guard::check_and_warn();
	}

	public function test_render_notice_does_nothing_when_not_admin(): void {
		// is_admin() stub returns false by default.
		ob_start();
		WPDO_HivePress_Conflict_Guard::render_notice();
		$out = ob_get_clean();
		$this->assertSame( '', $out );
	}

	public function test_guidance_does_not_point_to_a_missing_command(): void {
		// There is no HPCT importer: `wp wpdo hivepress migrate-from-hpct` never
		// existed and TMDO_HPCT_Import had no caller once core dropped HPCT.
		$root = dirname( __DIR__, 2 );
		foreach ( array( 'includes/hivepress/class-tmdo-hivepress-conflict-guard.php', 'admin/class-tmdo-admin-hivepress.php' ) as $file ) {
			$this->assertStringNotContainsString( 'migrate-from-hpct', (string) file_get_contents( $root . '/' . $file ), $file );
		}
		$this->assertFileDoesNotExist( $root . '/includes/class-tmdo-hpct-import.php' );
	}

	public function test_memo_cache_avoids_repeat_probing(): void {
		WPDO_HivePress_Conflict_Guard::reset_for_tests();
		$first  = WPDO_HivePress_Conflict_Guard::detect_conflicts();
		$second = WPDO_HivePress_Conflict_Guard::detect_conflicts();
		$this->assertSame( $first, $second );
	}
}