<?php

namespace Aternos\Codex\Test\Tests\Analyser;

use Aternos\Codex\Analyser\PatternAnalyser;
use Aternos\Codex\Analysis\Analysis;
use Aternos\Codex\Analysis\PatternInsightInterface;
use Aternos\Codex\Log\Entry;
use Aternos\Codex\Log\File\PathLogFile;
use Aternos\Codex\Log\Level;
use Aternos\Codex\Log\Line;
use Aternos\Codex\Test\Src\Analysis\TestPatternInformation;
use Aternos\Codex\Test\Src\Analysis\TestPatternProblem;
use Aternos\Codex\Test\Src\Analysis\TestSolution;
use Aternos\Codex\Test\Src\Log\TestPatternLog;
use PHPUnit\Framework\TestCase;
use ReflectionClass;

class PatternAnalyserTest extends TestCase
{
    /**
     * @return Analysis
     */
    protected function getExpectedAnalysis(): Analysis
    {
        return (new Analysis())
            ->addInsight((new TestPatternProblem())
                ->setCause("ABC")
                ->increaseCounter()
                ->setEntry((new Entry())->setTime(2)->setLevel(Level::ERROR)->setPrefix("[01.01.1970 00:00:02] [Log/ERROR]")
                    ->addLine(new Line(2, "[01.01.1970 00:00:02] [Log/ERROR] I have a problem with ABC"))
                )
            )
            ->addInsight((new TestPatternProblem())
                ->setCause("XYZ")
                ->setEntry((new Entry())->setTime(4)->setLevel(Level::ERROR)->setPrefix("[01.01.1970 00:00:04] [Log/ERROR]")
                    ->addLine(new Line(4, "[01.01.1970 00:00:04] [Log/ERROR] I have a problem with XYZ"))
                )
            )
            ->addInsight((new TestPatternProblem())
                ->setCause("DEF")
                ->setEntry((new Entry())->setTime(6)->setLevel(Level::ERROR)->setPrefix("[01.01.1970 00:00:06] [Log/ERROR]")
                    ->addLine(new Line(6, "[01.01.1970 00:00:06] [Log/ERROR] I have a problem with DEF"))
                    ->addLine(new Line(7, "I have a problem with GHI"))
                )
            )
            ->addInsight((new TestPatternProblem())
                ->setCause("GHI")
                ->setEntry((new Entry())->setTime(6)->setLevel(Level::ERROR)->setPrefix("[01.01.1970 00:00:06] [Log/ERROR]")
                    ->addLine(new Line(6, "[01.01.1970 00:00:06] [Log/ERROR] I have a problem with DEF"))
                    ->addLine(new Line(7, "I have a problem with GHI"))
                )
            )
            ->addInsight((new TestPatternInformation())
                ->setValue("v1.2.3")
                ->setEntry((new Entry())->setTime(7)->setLevel(Level::INFO)->setPrefix("[01.01.1970 00:00:07] [Log/INFO]")
                    ->addLine(new Line(8, "[01.01.1970 00:00:07] [Log/INFO] This log was generated by software v1.2.3"))
                )
            );
    }

    public function testAnalyse(): void
    {
        $logFile = new PathLogFile(__DIR__ . '/../../data/problem.log');
        $log = (new TestPatternLog())->setLogFile($logFile);
        $log->parse();

        $analysis = $log->analyse();
        $this->assertJsonStringEqualsJsonString(json_encode($this->getExpectedAnalysis()->getInsights()), json_encode($analysis->getInsights()));
    }

    public function testAnalyseWithPossibleInsightClasses(): void
    {
        $logFile = new PathLogFile(__DIR__ . '/../../data/problem.log');
        $log = (new TestPatternLog())->setLogFile($logFile);
        $log->parse();

        $analyser = (new PatternAnalyser())
            ->setPossibleInsightClasses([
                TestPatternInformation::class,
                TestPatternProblem::class
            ]);

        $analysis = $log->analyse($analyser);
        $this->assertJsonStringEqualsJsonString(json_encode($this->getExpectedAnalysis()->getInsights()), json_encode($analysis->getInsights()));
    }

    public function testAddPossibleInsightClassThrowsExceptionIfPossibleInsightClassDoesNotImplementPatternInsightInterface(): void
    {
        $this->expectException(\InvalidArgumentException::class);
        $this->expectExceptionMessage("Class " . TestSolution::class . " does not implement " . PatternInsightInterface::class . ".");
        (new PatternAnalyser())->addPossibleInsightClass(TestSolution::class);
    }

    public function testRemovePossibleInsightClass(): void
    {
        $analyser = (new PatternAnalyser())
            ->setPossibleInsightClasses([
                TestPatternInformation::class,
                TestPatternProblem::class
            ]);

        $reflector = new ReflectionClass(PatternAnalyser::class);
        $possibleInsightClassesProperty = $reflector->getProperty('possibleInsightClasses');

        $this->assertEquals([TestPatternInformation::class, TestPatternProblem::class], $possibleInsightClassesProperty->getValue($analyser));

        $analyser->removePossibleInsightClass(TestPatternProblem::class);

        $this->assertEquals([TestPatternInformation::class], $possibleInsightClassesProperty->getValue($analyser));
    }

    public function testRemovePossibleInsightClassThrowsExceptionIfPossibleInsightClassIsNotAdded(): void
    {
        // Set TestPatternProblem class
        $analyser = (new PatternAnalyser())
            ->setPossibleInsightClasses([
                TestPatternProblem::class
            ]);

        $reflector = new ReflectionClass(PatternAnalyser::class);
        $possibleInsightClassesProperty = $reflector->getProperty('possibleInsightClasses');

        $this->assertEquals([TestPatternProblem::class], $possibleInsightClassesProperty->getValue($analyser));

        // Remove TestPatternInformation class -> not found
        $this->expectException(\InvalidArgumentException::class);
        $this->expectExceptionMessage("Class " . TestPatternInformation::class . " not found in possible insight classes.");
        $analyser->removePossibleInsightClass(TestPatternInformation::class);

        $this->assertEquals([TestPatternInformation::class], $possibleInsightClassesProperty->getValue($analyser));
    }

    public function testOverridePossibleInsightClass(): void
    {
        $analyser = (new PatternAnalyser())
            ->setPossibleInsightClasses([
                TestPatternProblem::class
            ]);

        $reflector = new ReflectionClass(PatternAnalyser::class);
        $possibleInsightClassesProperty = $reflector->getProperty('possibleInsightClasses');

        $this->assertEquals([TestPatternProblem::class], $possibleInsightClassesProperty->getValue($analyser));

        $childInsightClass = new class extends TestPatternProblem {
            // Is empty child class
        };

        $analyser->overridePossibleInsightClass(TestPatternProblem::class, get_class($childInsightClass));

        $this->assertEquals([get_class($childInsightClass)], $possibleInsightClassesProperty->getValue($analyser));
    }

    public function testOverridePossibleInsightClassThrowsExceptionIfClassDoesNotExtendParent(): void
    {
        $analyser = (new PatternAnalyser())
            ->setPossibleInsightClasses([
                TestPatternProblem::class
            ]);

        $reflector = new ReflectionClass(PatternAnalyser::class);
        $possibleInsightClassesProperty = $reflector->getProperty('possibleInsightClasses');

        $this->assertEquals([TestPatternProblem::class], $possibleInsightClassesProperty->getValue($analyser));

        $childInsightClass = new class {
            // Is empty and not a child class
        };

        $this->expectException(\InvalidArgumentException::class);
        $this->expectExceptionMessage("Class " . get_class($childInsightClass) . " does not extend " . TestPatternProblem::class . ".");
        $analyser->overridePossibleInsightClass(TestPatternProblem::class, get_class($childInsightClass));

        $this->assertEquals([TestPatternProblem::class], $possibleInsightClassesProperty->getValue($analyser));
    }
}