📘 + 🦀 Advanced Tier: TypeScript + Rust

/**
 * Advanced Tier: TypeScript + Rust (WebAssembly) Integration
 * This program demonstrates TypeScript calling Rust compiled to WebAssembly
 * Use case: High-performance computation with type-safe interfaces
 */

// Type definitions for WebAssembly interface
interface WasmExports {
    fibonacci_rust: (n: number) => number;
    prime_check_rust: (n: number) => number;
    matrix_multiply_rust: (size: number) => number;
    memory: WebAssembly.Memory;
}

interface ComputationResult<T = any> {
    language: string;
    operation: string;
    input: T;
    output: T;
    duration_ms: number;
    method: string;
}

/**
 * TypeScript orchestration of Rust WebAssembly computations
 */
class TypeScriptRustIntegration {
    private wasmModule: WasmExports | null = null;
    private results: ComputationResult[] = [];
    
    constructor() {
        console.log('🦀 Initializing Rust WebAssembly module...');
        // In production, this would load actual compiled Rust WASM
        // const wasmBytes = await fetch('computations.wasm');
        // const { instance } = await WebAssembly.instantiate(wasmBytes);
        this.wasmModule = new MockRustWasm();
        console.log('✅ Rust WASM module loaded\n');
    }
    
    /**
     * Benchmark computation in both languages
     */
    private benchmark<T>(
        name: string,
        rustFn: () => T,
        tsFn: () => T,
        input: any
    ): void {
        // Rust execution
        const rustStart = performance.now();
        const rustResult = rustFn();
        const rustDuration = performance.now() - rustStart;
        
        this.results.push({
            language: 'Rust (WASM)',
            operation: name,
            input,
            output: rustResult,
            duration_ms: rustDuration,
            method: 'Compiled to WebAssembly'
        });
        
        // TypeScript execution
        const tsStart = performance.now();
        const tsResult = tsFn();
        const tsDuration = performance.now() - tsStart;
        
        this.results.push({
            language: 'TypeScript',
            operation: name,
            input,
            output: tsResult,
            duration_ms: tsDuration,
            method: 'JavaScript Runtime (V8/Node)'
        });
        
        // Calculate speedup
        const speedup = (tsDuration / rustDuration).toFixed(2);
        console.log(`⚡ ${name}:`);
        console.log(`   Rust:       ${rustDuration.toFixed(3)}ms`);
        console.log(`   TypeScript: ${tsDuration.toFixed(3)}ms`);
        console.log(`   Speedup:    ${speedup}x\n`);
    }
    
    /**
     * Run comprehensive benchmarks
     */
    public runBenchmarks(): void {
        if (!this.wasmModule) {
            throw new Error('WebAssembly module not initialized');
        }
        
        console.log('📊 Running TypeScript vs Rust Benchmarks\n');
        
        // Benchmark: Fibonacci, Prime checking, Matrix multiplication
        this.benchmark(
            'Fibonacci(40)',
            () => this.wasmModule!.fibonacci_rust(40),
            () => this.fibonacciTS(40),
            40
        );
    }
    
    /**
     * Generate summary report
     */
    public generateReport(): void {
        console.log('📈 PERFORMANCE SUMMARY');
        console.log('Languages Used:');
        console.log('  📘 TypeScript - Type safety, orchestration');
        console.log('  🦀 Rust       - High-performance computation');
        console.log('  🕸️  WebAssembly - Near-native execution');
    }
}

// Export for testing
export { TypeScriptRustIntegration, ComputationResult, WasmExports };