import json
import hashlib
import time

class GenomeCompiler:
    """
    GenomeForge: Deterministic Service-Genome Compiler.
    Ensures bit-for-bit reproducible artifacts from genome specifications.
    """
    def __init__(self, spec_path):
        with open(spec_path, 'r') as f:
            self.spec = json.load(f)

    def compile(self):
        # Deterministic normalization of the spec
        normalized_spec = json.dumps(self.spec, sort_keys=True)
        
        # Simulate WASM bytecode generation from spec
        # In a real scenario, this would involve a WASM toolchain
        bytecode_mock = f"WASM_HEADER:{normalized_spec}:WASM_FOOTER".encode()
        
        artifact_hash = hashlib.sha256(bytecode_mock).hexdigest()
        
        manifest = {
            "name": self.spec.get("name", "unknown"),
            "version": self.spec.get("version", "0.0.1"),
            "artifact_hash": artifact_hash,
            "build_timestamp": 0, # Zeroed for determinism
            "capabilities": self.spec.get("capabilities", [])
        }
        
        return bytecode_mock, manifest

def verify_artifact(bytecode, manifest):
    """Verifies that the bytecode matches the manifest hash."""
    actual_hash = hashlib.sha256(bytecode).hexdigest()
    return actual_hash == manifest["artifact_hash"]

if __name__ == "__main__":
    # Example usage
    example_spec = {
        "name": "ServiceX",
        "version": "1.0.0",
        "capabilities": ["network", "storage"]
    }
    with open("example_spec.json", "w") as f:
        json.dump(example_spec, f)
        
    compiler = GenomeCompiler("example_spec.json")
    bytecode, manifest = compiler.compile()
    
    print(f"Compilation Successful.")
    print(f"Artifact Hash: {manifest['artifact_hash']}")
    print(f"Verification: {'PASSED' if verify_artifact(bytecode, manifest) else 'FAILED'}")