<?php

declare(strict_types=1);

use App\Framework\LiveComponents\Services\IntegrityValidator;
use App\Framework\LiveComponents\ValueObjects\ChunkHash;

describe('IntegrityValidator Service', function () {
    it('verifies chunk data with matching hash', function () {
        $validator = new IntegrityValidator();
        $data = 'test chunk data';
        $hash = ChunkHash::fromData($data);

        expect($validator->verifyChunk($data, $hash))->toBeTrue();
    });

    it('rejects chunk data with mismatched hash', function () {
        $validator = new IntegrityValidator();
        $data = 'test chunk data';
        $wrongData = 'different chunk data';
        $hash = ChunkHash::fromData($data);

        expect($validator->verifyChunk($wrongData, $hash))->toBeFalse();
    });

    it('verifies file with matching hash', function () {
        $validator = new IntegrityValidator();
        $tempFile = tempnam(sys_get_temp_dir(), 'integrity_test_');
        file_put_contents($tempFile, 'test file content');

        try {
            $hash = ChunkHash::fromFile($tempFile);

            expect($validator->verifyFile($tempFile, $hash))->toBeTrue();
        } finally {
            unlink($tempFile);
        }
    });

    it('rejects file with mismatched hash', function () {
        $validator = new IntegrityValidator();
        $tempFile = tempnam(sys_get_temp_dir(), 'integrity_test_');
        file_put_contents($tempFile, 'original content');

        try {
            $hash = ChunkHash::fromFile($tempFile);

            // Modify file content
            file_put_contents($tempFile, 'modified content');

            expect($validator->verifyFile($tempFile, $hash))->toBeFalse();
        } finally {
            unlink($tempFile);
        }
    });

    it('rejects verification for non-existent file', function () {
        $validator = new IntegrityValidator();
        $nonExistentFile = '/tmp/does_not_exist_' . uniqid();
        $hash = ChunkHash::fromData('some data');

        expect($validator->verifyFile($nonExistentFile, $hash))->toBeFalse();
    });

    it('calculates chunk hash correctly', function () {
        $validator = new IntegrityValidator();
        $data = 'test chunk data';

        $hash = $validator->calculateChunkHash($data);

        expect($hash)->toBeInstanceOf(ChunkHash::class);
        expect($hash->verify($data))->toBeTrue();
    });

    it('calculates file hash correctly', function () {
        $validator = new IntegrityValidator();
        $tempFile = tempnam(sys_get_temp_dir(), 'integrity_test_');
        file_put_contents($tempFile, 'test file content');

        try {
            $hash = $validator->calculateFileHash($tempFile);

            expect($hash)->toBeInstanceOf(ChunkHash::class);
            expect($hash->verifyFile($tempFile))->toBeTrue();
        } finally {
            unlink($tempFile);
        }
    });

    it('produces consistent hashes for same data', function () {
        $validator = new IntegrityValidator();
        $data = 'consistent test data';

        $hash1 = $validator->calculateChunkHash($data);
        $hash2 = $validator->calculateChunkHash($data);

        expect($hash1->equals($hash2))->toBeTrue();
    });

    it('produces different hashes for different data', function () {
        $validator = new IntegrityValidator();
        $data1 = 'first chunk';
        $data2 = 'second chunk';

        $hash1 = $validator->calculateChunkHash($data1);
        $hash2 = $validator->calculateChunkHash($data2);

        expect($hash1->equals($hash2))->toBeFalse();
    });

    it('verifies large chunk data correctly', function () {
        $validator = new IntegrityValidator();
        // Create 1MB of data
        $largeData = str_repeat('A', 1024 * 1024);
        $hash = ChunkHash::fromData($largeData);

        expect($validator->verifyChunk($largeData, $hash))->toBeTrue();
    });

    it('verifies empty chunk data', function () {
        $validator = new IntegrityValidator();
        $emptyData = '';
        $hash = ChunkHash::fromData($emptyData);

        expect($validator->verifyChunk($emptyData, $hash))->toBeTrue();
    });

    it('detects corrupted data in middle of chunk', function () {
        $validator = new IntegrityValidator();
        $originalData = 'start' . str_repeat('middle', 1000) . 'end';
        $hash = ChunkHash::fromData($originalData);

        $corruptedData = 'start' . str_repeat('CORRUPTED', 1000) . 'end';

        expect($validator->verifyChunk($corruptedData, $hash))->toBeFalse();
    });

    it('handles binary data correctly', function () {
        $validator = new IntegrityValidator();
        $binaryData = random_bytes(1024);
        $hash = $validator->calculateChunkHash($binaryData);

        expect($validator->verifyChunk($binaryData, $hash))->toBeTrue();
    });
});