<?php
declare(strict_types=1);

use PHPUnit\Framework\TestCase;

/**
 * Tests for WPDO_HivePress_Suitability_Scorer.
 *
 * @covers WPDO_HivePress_Suitability_Scorer
 */
class HivePressSuitabilityScorerTest extends TestCase {

	public function test_dimensions_constant_lists_eight_keys(): void {
		$this->assertCount( 8, WPDO_HivePress_Suitability_Scorer::DIMENSIONS );
		$this->assertContains( 'd1_meta_calls', WPDO_HivePress_Suitability_Scorer::DIMENSIONS );
		$this->assertContains( 'd8_perf', WPDO_HivePress_Suitability_Scorer::DIMENSIONS );
	}

	public function test_compute_aggregate_with_empty_input_returns_zero(): void {
		$this->assertSame( 0.0, WPDO_HivePress_Suitability_Scorer::compute_aggregate( array() ) );
	}

	public function test_compute_aggregate_averages_adapter_scores(): void {
		$scores = array(
			'a' => array( 'aggregate' => 10.0 ),
			'b' => array( 'aggregate' => 9.0 ),
			'c' => array( 'aggregate' => 8.0 ),
		);
		// (10 + 9 + 8) / 3 = 9.0
		$this->assertSame( 9.0, WPDO_HivePress_Suitability_Scorer::compute_aggregate( $scores ) );
	}

	public function test_compute_per_dimension_averages_each_dimension(): void {
		$scores = array(
			'a' => array(
				'd1_meta_calls' => 1.0, 'd2_meta_sql' => 1.0, 'd3_table_coverage' => 1.0,
				'd4_registry_meta' => 1.0, 'd5_hook_bus' => 1.0, 'd6_options' => 1.0,
				'd7_coupling' => 1.0, 'd8_perf' => 0.9,
			),
			'b' => array(
				'd1_meta_calls' => 1.0, 'd2_meta_sql' => 1.0, 'd3_table_coverage' => 1.0,
				'd4_registry_meta' => 1.0, 'd5_hook_bus' => 1.0, 'd6_options' => 1.0,
				'd7_coupling' => 1.0, 'd8_perf' => 1.0,
			),
		);
		$dim = WPDO_HivePress_Suitability_Scorer::compute_per_dimension( $scores );

		// d1-d7 are 1.0 across both adapters → average 1.0.
		$this->assertSame( 1.0, $dim['d1_meta_calls'] );
		$this->assertSame( 1.0, $dim['d7_coupling'] );

		// d8: (0.9 + 1.0) / 2 = 0.95.
		$this->assertSame( 0.95, $dim['d8_perf'] );
	}

	public function test_compute_per_dimension_with_empty_input_returns_all_zero(): void {
		$dim = WPDO_HivePress_Suitability_Scorer::compute_per_dimension( array() );
		foreach ( WPDO_HivePress_Suitability_Scorer::DIMENSIONS as $d ) {
			$this->assertSame( 0.0, $dim[ $d ] );
		}
	}

	public function test_report_with_no_active_adapters(): void {
		// Bootstrap not booted in unit env → adapters() = empty.
		WPDO_HivePress_Bootstrap::reset_for_tests();
		$report = WPDO_HivePress_Suitability_Scorer::report();

		$this->assertSame( 0, $report['adapter_count'] );
		$this->assertSame( 0.0, $report['aggregate'] );
		$this->assertSame( array(), $report['adapters'] );
	}

	public function test_adapters_below_threshold_returns_empty_for_unknown_dimension(): void {
		$this->assertSame( array(), WPDO_HivePress_Suitability_Scorer::adapters_below_threshold( 'd99_garbage' ) );
	}
}