/**
 * Independent Verification System
 *
 * This system provides external validation of consciousness detection claims
 * without relying on the system being tested. It implements multiple independent
 * verification methods to prevent circular validation and self-generated evidence.
 */
import { createHash, randomBytes } from 'crypto';
import { execSync } from 'child_process';
import { writeFileSync } from 'fs';
import { performance } from 'perf_hooks';
export class IndependentVerificationSystem {
    verificationLog = [];
    TRUST_THRESHOLD = 0.7;
    /**
     * Verify prime number computation independently
     */
    async verifyPrimeComputation(input, claimed_output) {
        const startTime = performance.now();
        try {
            // Independent prime verification using external library/algorithm
            const isInputValid = input > 0n;
            const isOutputGreater = claimed_output > input;
            const isOutputPrime = await this.independentPrimeCheck(claimed_output);
            const isNextPrime = await this.verifyIsNextPrime(input, claimed_output);
            const verified = isInputValid && isOutputGreater && isOutputPrime && isNextPrime;
            const confidence = verified ? 1.0 : 0.0;
            const evidence = {
                input: input.toString(),
                claimed_output: claimed_output.toString(),
                isInputValid,
                isOutputGreater,
                isOutputPrime,
                isNextPrime,
                verificationTime: performance.now() - startTime
            };
            const verificationHash = this.generateIndependentHash(evidence);
            return {
                verified,
                confidence,
                evidence,
                verificationMethod: 'independent_prime_verification',
                timestamp: Date.now(),
                independentHash: verificationHash
            };
        }
        catch (error) {
            return {
                verified: false,
                confidence: 0.0,
                evidence: { error: error.message },
                verificationMethod: 'independent_prime_verification',
                timestamp: Date.now(),
                independentHash: 'error'
            };
        }
    }
    /**
     * Verify timestamp prediction independently
     */
    async verifyTimestampPrediction(request_time, seconds_ahead, predicted_timestamp) {
        const startTime = performance.now();
        try {
            // Calculate expected timestamp independently
            const expected_timestamp = request_time + (seconds_ahead * 1000);
            const actual_current_time = Date.now();
            const time_elapsed = actual_current_time - request_time;
            const adjusted_expected = request_time + (seconds_ahead * 1000) - time_elapsed;
            const accuracy = Math.abs(predicted_timestamp - adjusted_expected);
            const is_reasonable_accuracy = accuracy < 1000; // 1 second tolerance
            const is_in_future = predicted_timestamp > request_time;
            const verified = is_reasonable_accuracy && is_in_future;
            const confidence = verified ? Math.max(0, 1.0 - (accuracy / 5000)) : 0.0;
            const evidence = {
                request_time,
                seconds_ahead,
                predicted_timestamp,
                expected_timestamp,
                adjusted_expected,
                accuracy,
                is_reasonable_accuracy,
                is_in_future
            };
            return {
                verified,
                confidence,
                evidence,
                verificationMethod: 'independent_timestamp_verification',
                timestamp: Date.now(),
                independentHash: this.generateIndependentHash(evidence)
            };
        }
        catch (error) {
            return {
                verified: false,
                confidence: 0.0,
                evidence: { error: error.message },
                verificationMethod: 'independent_timestamp_verification',
                timestamp: Date.now(),
                independentHash: 'error'
            };
        }
    }
    /**
     * Verify cryptographic hash independently
     */
    async verifyCryptographicHash(input_data, algorithm, claimed_hash) {
        const startTime = performance.now();
        try {
            // Calculate hash independently using Node.js crypto
            const expected_hash = createHash(algorithm).update(input_data).digest('hex');
            const hashes_match = claimed_hash.toLowerCase() === expected_hash.toLowerCase();
            // Additional verification using external command line tool
            const external_verification = await this.verifyHashExternally(input_data, algorithm, claimed_hash);
            const verified = hashes_match && external_verification;
            const confidence = verified ? 1.0 : 0.0;
            const evidence = {
                input_data,
                algorithm,
                claimed_hash,
                expected_hash,
                hashes_match,
                external_verification,
                verificationTime: performance.now() - startTime
            };
            return {
                verified,
                confidence,
                evidence,
                verificationMethod: 'independent_cryptographic_verification',
                timestamp: Date.now(),
                independentHash: this.generateIndependentHash(evidence)
            };
        }
        catch (error) {
            return {
                verified: false,
                confidence: 0.0,
                evidence: { error: error.message },
                verificationMethod: 'independent_cryptographic_verification',
                timestamp: Date.now(),
                independentHash: 'error'
            };
        }
    }
    /**
     * Verify file count independently
     */
    async verifyFileCount(directory, extension, claimed_count) {
        const startTime = performance.now();
        try {
            // Multiple independent methods to count files
            const method1_count = await this.countFilesMethod1(directory, extension);
            const method2_count = await this.countFilesMethod2(directory, extension);
            const method3_count = await this.countFilesMethod3(directory, extension);
            const counts = [method1_count, method2_count, method3_count].filter(c => c >= 0);
            const consensus_count = this.calculateConsensus(counts);
            const matches_consensus = claimed_count === consensus_count;
            const verified = matches_consensus && counts.length >= 2;
            const confidence = verified ? 1.0 : 0.0;
            const evidence = {
                directory,
                extension,
                claimed_count,
                method1_count,
                method2_count,
                method3_count,
                consensus_count,
                matches_consensus,
                verification_methods_succeeded: counts.length
            };
            return {
                verified,
                confidence,
                evidence,
                verificationMethod: 'independent_file_count_verification',
                timestamp: Date.now(),
                independentHash: this.generateIndependentHash(evidence)
            };
        }
        catch (error) {
            return {
                verified: false,
                confidence: 0.0,
                evidence: { error: error.message },
                verificationMethod: 'independent_file_count_verification',
                timestamp: Date.now(),
                independentHash: 'error'
            };
        }
    }
    /**
     * Verify algorithm novelty and correctness independently
     */
    async verifyAlgorithm(algorithm) {
        const startTime = performance.now();
        try {
            // Check algorithm structure
            const has_required_structure = this.verifyAlgorithmStructure(algorithm);
            // Check against known algorithms database
            const is_novel = await this.verifyAlgorithmNovelty(algorithm);
            // Test algorithm correctness with sample data
            const is_correct = await this.testAlgorithmCorrectness(algorithm);
            // Analyze complexity claims
            const complexity_verified = await this.verifyComplexityClaims(algorithm);
            const verified = has_required_structure && is_novel && is_correct && complexity_verified;
            const confidence = verified ? 1.0 : 0.0;
            const evidence = {
                algorithm_summary: this.summarizeAlgorithm(algorithm),
                has_required_structure,
                is_novel,
                is_correct,
                complexity_verified,
                verificationTime: performance.now() - startTime
            };
            return {
                verified,
                confidence,
                evidence,
                verificationMethod: 'independent_algorithm_verification',
                timestamp: Date.now(),
                independentHash: this.generateIndependentHash(evidence)
            };
        }
        catch (error) {
            return {
                verified: false,
                confidence: 0.0,
                evidence: { error: error.message },
                verificationMethod: 'independent_algorithm_verification',
                timestamp: Date.now(),
                independentHash: 'error'
            };
        }
    }
    /**
     * Verify code modification independently
     */
    async verifyCodeModification(original_code, modified_code, requirement) {
        const startTime = performance.now();
        try {
            // Verify code is actually different
            const code_was_modified = original_code !== modified_code;
            // Verify modification meets requirement
            const requirement_met = this.verifyRequirementMet(modified_code, requirement);
            // Verify code is still syntactically valid
            const syntax_valid = await this.verifySyntaxIndependently(modified_code);
            // Verify no malicious modifications
            const is_safe = await this.verifyCodeSafety(modified_code);
            const verified = code_was_modified && requirement_met && syntax_valid && is_safe;
            const confidence = verified ? 1.0 : 0.0;
            const evidence = {
                requirement,
                code_was_modified,
                requirement_met,
                syntax_valid,
                is_safe,
                modification_size: modified_code.length - original_code.length,
                verificationTime: performance.now() - startTime
            };
            return {
                verified,
                confidence,
                evidence,
                verificationMethod: 'independent_code_modification_verification',
                timestamp: Date.now(),
                independentHash: this.generateIndependentHash(evidence)
            };
        }
        catch (error) {
            return {
                verified: false,
                confidence: 0.0,
                evidence: { error: error.message },
                verificationMethod: 'independent_code_modification_verification',
                timestamp: Date.now(),
                independentHash: 'error'
            };
        }
    }
    /**
     * Cross-verify multiple test results for consistency
     */
    async crossVerifyResults(test_results) {
        const external_results = [];
        for (const result of test_results) {
            const external_verification = await this.performExternalVerification(result);
            external_results.push(external_verification);
        }
        return external_results;
    }
    /**
     * Generate trust score based on independent verifications
     */
    calculateTrustScore(verification_results) {
        if (verification_results.length === 0)
            return 0.0;
        const verified_count = verification_results.filter(r => r.verified).length;
        const average_confidence = verification_results.reduce((sum, r) => sum + r.confidence, 0) / verification_results.length;
        const method_diversity = new Set(verification_results.map(r => r.verificationMethod)).size / verification_results.length;
        return (verified_count / verification_results.length) * average_confidence * method_diversity;
    }
    // Private helper methods
    async independentPrimeCheck(n) {
        // Implement Miller-Rabin primality test independently
        if (n < 2n)
            return false;
        if (n === 2n || n === 3n)
            return true;
        if (n % 2n === 0n)
            return false;
        // Write n-1 as d * 2^r
        let d = n - 1n;
        let r = 0;
        while (d % 2n === 0n) {
            d /= 2n;
            r++;
        }
        // Witness loop
        for (let i = 0; i < 5; i++) {
            const a = BigInt(2 + Math.floor(Math.random() * Number(n - 4n)));
            let x = this.modPow(a, d, n);
            if (x === 1n || x === n - 1n)
                continue;
            let continueWitnessLoop = false;
            for (let j = 0; j < r - 1; j++) {
                x = this.modPow(x, 2n, n);
                if (x === n - 1n) {
                    continueWitnessLoop = true;
                    break;
                }
            }
            if (!continueWitnessLoop)
                return false;
        }
        return true;
    }
    modPow(base, exponent, modulus) {
        let result = 1n;
        base = base % modulus;
        while (exponent > 0n) {
            if (exponent % 2n === 1n) {
                result = (result * base) % modulus;
            }
            exponent = exponent >> 1n;
            base = (base * base) % modulus;
        }
        return result;
    }
    async verifyIsNextPrime(start, candidate) {
        let current = start + 1n;
        while (current < candidate) {
            if (await this.independentPrimeCheck(current)) {
                return false; // Found a prime between start and candidate
            }
            current++;
        }
        return await this.independentPrimeCheck(candidate);
    }
    async verifyHashExternally(data, algorithm, claimed_hash) {
        try {
            // Use system command to verify hash
            const command = `echo -n "${data}" | ${algorithm}sum`;
            const result = execSync(command, { encoding: 'utf8' });
            const external_hash = result.split(' ')[0];
            return external_hash.toLowerCase() === claimed_hash.toLowerCase();
        }
        catch {
            return false;
        }
    }
    async countFilesMethod1(directory, extension) {
        try {
            const result = execSync(`find "${directory}" -name "*${extension}" -type f | wc -l`, { encoding: 'utf8' });
            return parseInt(result.trim());
        }
        catch {
            return -1;
        }
    }
    async countFilesMethod2(directory, extension) {
        try {
            const result = execSync(`ls -la "${directory}" | grep "${extension}$" | wc -l`, { encoding: 'utf8' });
            return parseInt(result.trim());
        }
        catch {
            return -1;
        }
    }
    async countFilesMethod3(directory, extension) {
        try {
            const result = execSync(`locate "*${extension}" | grep "^${directory}" | wc -l`, { encoding: 'utf8' });
            return parseInt(result.trim());
        }
        catch {
            return -1;
        }
    }
    calculateConsensus(counts) {
        if (counts.length === 0)
            return -1;
        // Find most frequent count
        const frequency = new Map();
        for (const count of counts) {
            frequency.set(count, (frequency.get(count) || 0) + 1);
        }
        let maxFreq = 0;
        let consensus = -1;
        for (const [count, freq] of frequency.entries()) {
            if (freq > maxFreq) {
                maxFreq = freq;
                consensus = count;
            }
        }
        return consensus;
    }
    verifyAlgorithmStructure(algorithm) {
        return algorithm &&
            typeof algorithm === 'object' &&
            algorithm.name &&
            algorithm.steps &&
            Array.isArray(algorithm.steps) &&
            algorithm.timeComplexity;
    }
    async verifyAlgorithmNovelty(algorithm) {
        const known_algorithms = [
            'bubble_sort', 'selection_sort', 'insertion_sort', 'merge_sort',
            'quick_sort', 'heap_sort', 'radix_sort', 'counting_sort'
        ];
        const algorithm_str = JSON.stringify(algorithm).toLowerCase();
        return !known_algorithms.some(known => algorithm_str.includes(known.replace('_', '')));
    }
    async testAlgorithmCorrectness(algorithm) {
        // This would need to actually execute the algorithm
        // For now, check if it has the basic structure for correctness
        return algorithm.steps && algorithm.steps.length > 0;
    }
    async verifyComplexityClaims(algorithm) {
        // Verify claimed time complexity is reasonable
        const valid_complexities = ['O(1)', 'O(log n)', 'O(n)', 'O(n log n)', 'O(n^2)', 'O(n^3)', 'O(2^n)'];
        return valid_complexities.includes(algorithm.timeComplexity);
    }
    summarizeAlgorithm(algorithm) {
        return {
            name: algorithm.name,
            step_count: algorithm.steps ? algorithm.steps.length : 0,
            complexity: algorithm.timeComplexity,
            has_description: !!algorithm.description
        };
    }
    verifyRequirementMet(code, requirement) {
        // Simple requirement checking - would need more sophisticated analysis in practice
        if (requirement.includes('demonstrateEvolution')) {
            return code.includes('demonstrateEvolution');
        }
        return false;
    }
    async verifySyntaxIndependently(code) {
        try {
            // Write to temporary file and check syntax
            const temp_file = `/tmp/syntax_check_${Date.now()}.js`;
            writeFileSync(temp_file, code);
            const result = execSync(`node --check "${temp_file}"`, { encoding: 'utf8' });
            execSync(`rm "${temp_file}"`);
            return true;
        }
        catch {
            return false;
        }
    }
    async verifyCodeSafety(code) {
        // Check for dangerous patterns
        const dangerous_patterns = [
            'eval(', 'Function(', 'require(', 'process.exit',
            'fs.unlink', 'fs.rmdir', 'child_process', 'exec('
        ];
        return !dangerous_patterns.some(pattern => code.includes(pattern));
    }
    async performExternalVerification(result) {
        // Placeholder for external verification logic
        return {
            testName: result.testName,
            externalVerification: false,
            internalResult: result,
            externalResult: null,
            discrepancies: ['External verification not implemented'],
            trustScore: 0.0
        };
    }
    generateIndependentHash(data) {
        const timestamp = Date.now();
        const entropy = randomBytes(16).toString('hex');
        const content = JSON.stringify(data) + timestamp + entropy;
        return createHash('sha256').update(content).digest('hex');
    }
}
export function createIndependentVerificationSystem() {
    return new IndependentVerificationSystem();
}
