<?php

namespace Tests\Unit\Rules;

use App\Services\RuleExpressionService;
use CodeIgniter\Test\CIUnitTestCase;

class RuleExpressionCompileTest extends CIUnitTestCase
{
    protected function setUp(): void
    {
        parent::setUp();
        if (!class_exists('Symfony\Component\ExpressionLanguage\ExpressionLanguage')) {
            $this->markTestSkipped('Symfony ExpressionLanguage not installed');
        }
    }

    public function testCompileSexCondition(): void
    {
        $svc = new RuleExpressionService();

        $compiled = $svc->compile("if(sex('F') ? result_set(0.7) : result_set(1))");

        $this->assertIsArray($compiled);
        $this->assertEquals('patient["Sex"] == "F"', $compiled['conditionExpr']);
        $this->assertEquals(0.7, $compiled['then'][0]['value']);
        $this->assertEquals(1, $compiled['else'][0]['value']);
        $this->assertStringContainsString('patient["Sex"] == "F"', $compiled['valueExpr']);
    }

    public function testCompilePriorityCondition(): void
    {
        $svc = new RuleExpressionService();

        $compiled = $svc->compile("if(priority('S') ? result_set('urgent') : result_set('normal'))");

        $this->assertIsArray($compiled);
        $this->assertEquals('order["Priority"] == "S"', $compiled['conditionExpr']);
        $this->assertEquals('urgent', $compiled['then'][0]['value']);
        $this->assertEquals('normal', $compiled['else'][0]['value']);
    }

    public function testCompileInvalidSyntax(): void
    {
        $svc = new RuleExpressionService();

        $this->expectException(\InvalidArgumentException::class);
        $svc->compile("invalid syntax here");
    }

    public function testCompileEmptyReturnsEmpty(): void
    {
        $svc = new RuleExpressionService();

        $compiled = $svc->compile("");

        $this->assertIsArray($compiled);
        $this->assertEmpty($compiled);
    }
}