import asyncio
import re
import hashlib
from datetime import datetime
from aiva.db_connector import memory # Assuming db_connector.py exists

# Mock classes for demonstration, replace with actual implementations
class FoundationGate:
    def __init__(self, memory_stores):
        self.memory = memory_stores

    def validate(self, output, worker_id, metadata):
        """Enforce P1, P4, P8"""
        checks = {}
        
        # P1: Cryptographic/Tamper Check
        # In MVP, we verify the output_hash matches the metadata hash
        current_hash = hashlib.sha256(output.encode()).hexdigest()
        checks["tamper_proof"] = current_hash == metadata.get("output_hash")
        checks["signature_valid"] = True # Placeholder for Ed25519 signing
        
        # P4: Audit Log Status (pre-check)
        # We ensure metadata contains a valid timestamp
        checks["audit_ready"] = "timestamp" in metadata
        
        # P8: Privacy/PII Detection
        checks["no_pii_exposure"] = not self._detect_pii(output)
        
        score = sum(checks.values()) / len(checks)
        return score, checks

    def _detect_pii(self, text):
        pii_patterns = [
            r'\b\d{3}-\d{2}-\d{4}\b',  # SSN
            r'\b\d{16}\b',              # Credit card
            r'\b[A-Z0-9._%+-]+@[A-Z0-9.-]+\.[A-Z]{2,}\b',  # Email
            r'\b\d{3}-\d{3}-\d{4}\b',   # Phone
        ]
        for pattern in pii_patterns:
            if re.search(pattern, text, re.IGNORECASE):
                return True
        return False

class IntelligenceGate:
    def __init__(self, memory_stores):
        self.memory = memory_stores

    def validate(self, output, task_description, worker_id, metadata):
        """Enforce P5, P6, P3"""
        checks = {}
        checks["relevance"] = True
        checks["consistency"] = True
        checks["completeness"] = True
        score = sum(checks.values()) / len(checks)
        return score, checks

class RealtimeGate:
    def __init__(self, memory_stores):
        self.memory = memory_stores

    def validate(self, output, task_description, worker_id, metadata):
        """Enforce P2, P7, P9"""
        checks = {}
        checks["latency"] = True
        checks["security"] = True
        checks["trust"] = True
        score = sum(checks.values()) / len(checks)
        return score, checks

# validation_gates.py

class GateAlpha:  # Input Validity
    def __init__(self, memory):
        self.memory = memory
        self.name = "Gate Alpha"

    async def validate(self, input_data, metadata):
        """Validates the input data quality."""
        try:
            is_valid = self._check_source_data_quality(input_data, metadata)
            reason = "Input data is valid." if is_valid else "Input data is invalid."
            await self.memory.log_audit(self.name, "input_validation", {"passed": is_valid, "reason": reason, "metadata": metadata})
            return is_valid, reason
        except Exception as e:
            reason = f"Gate Alpha validation failed: {e}"
            await self.memory.log_audit(self.name, "input_validation", {"passed": False, "reason": reason, "metadata": metadata})
            return False, reason

    def _check_source_data_quality(self, input_data, metadata):
        """Placeholder for input data quality checks.  Implement data validation logic here."""
        # Example: Check if required fields are present
        if not isinstance(input_data, dict):
            return False

        required_fields = metadata.get("required_fields", []) # Get required fields from metadata
        for field in required_fields:
            if field not in input_data:
                return False
        return True

class GateBeta:  # Output Quality
    def __init__(self, memory):
        self.memory = memory
        self.name = "Gate Beta"

    async def validate(self, output, task_description, metadata):
        """Checks accuracy and completeness of the output."""
        try:
            is_accurate = self._check_accuracy(output, task_description, metadata)
            is_complete = self._check_completeness(output, task_description, metadata)
            passed = is_accurate and is_complete
            reason = "Output is accurate and complete." if passed else "Output is not accurate or complete."
            await self.memory.log_audit(self.name, "output_validation", {"passed": passed, "reason": reason, "metadata": metadata})
            return passed, reason
        except Exception as e:
            reason = f"Gate Beta validation failed: {e}"
            await self.memory.log_audit(self.name, "output_validation", {"passed": False, "reason": reason, "metadata": metadata})
            return False, reason

    def _check_accuracy(self, output, task_description, metadata):
        """Placeholder for accuracy checks. Implement accuracy validation logic here."""
        # Example: Check if the output contains specific keywords
        required_keywords = metadata.get("required_keywords", [])
        if not isinstance(output, str):
            return False

        for keyword in required_keywords:
            if keyword not in output.lower():
                return False
        return True

    def _check_completeness(self, output, task_description, metadata):
        """Placeholder for completeness checks. Implement completeness validation logic here."""
        # Example: check output length
        min_length = metadata.get("min_length", 0)
        if not isinstance(output, str):
            return False
        return len(output) >= min_length

class GateGamma:  # Insight Purity
    def __init__(self, memory):
        self.memory = memory
        self.name = "Gate Gamma"

    async def validate(self, output, task_description, metadata):
        """Detects hallucinations in the output."""
        try:
            no_hallucinations = not self._detect_hallucinations(output, task_description, metadata)
            reason = "No hallucinations detected." if no_hallucinations else "Hallucinations detected."
            await self.memory.log_audit(self.name, "hallucination_detection", {"passed": no_hallucinations, "reason": reason, "metadata": metadata})
            return no_hallucinations, reason
        except Exception as e:
            reason = f"Gate Gamma validation failed: {e}"
            await self.memory.log_audit(self.name, "hallucination_detection", {"passed": False, "reason": reason, "metadata": metadata})
            return False, reason

    def _detect_hallucinations(self, output, task_description, metadata):
        """Placeholder for hallucination detection. Implement hallucination detection logic here."""
        # Example: Check for inconsistencies with known facts or the task description
        known_facts = metadata.get("known_facts", [])
        if not isinstance(output, str):
            return True

        for fact in known_facts:
            if fact.lower() not in output.lower():
                return True # Assume hallucination if known fact is missing
        return False

class GateDelta:  # Memory Integration
    def __init__(self, memory):
        self.memory = memory
        self.name = "Gate Delta"

    async def validate(self, data, key, operation_type, metadata):
        """Validates memory storage operations."""
        try:
            success = await self._validate_storage_operation(data, key, operation_type, metadata)
            reason = "Memory operation validated." if success else "Memory operation failed."
            await self.memory.log_audit(self.name, "memory_validation", {"passed": success, "reason": reason, "metadata": metadata, "operation": operation_type, "key": key})
            return success, reason
        except Exception as e:
            reason = f"Gate Delta validation failed: {e}"
            await self.memory.log_audit(self.name, "memory_validation", {"passed": False, "reason": reason, "metadata": metadata, "operation": operation_type, "key": key})
            return False, reason

    async def _validate_storage_operation(self, data, key, operation_type, metadata):
        """Placeholder for validating memory storage operations."""
        # Example: Check if data was successfully written to memory
        if operation_type == "write":
            try:
                await self.memory.write_data(key, data)
                read_back = await self.memory.read_data(key)
                return read_back == data
            except Exception as e:
                print(f"Memory write/read failed: {e}")
                return False
        elif operation_type == "read":
            try:
                read_data = await self.memory.read_data(key)
                return read_data is not None
            except Exception as e:
                print(f"Memory read failed: {e}")
                return False
        return False

class GateEpsilon:  # Strategy Alignment
    def __init__(self, memory):
        self.memory = memory
        self.name = "Gate Epsilon"

    async def validate(self, output, task_description, metadata):
        """Ensures the output aligns with the revenue pathway."""
        try:
            is_aligned = self._check_revenue_alignment(output, task_description, metadata)
            reason = "Output aligns with revenue pathway." if is_aligned else "Output does not align with revenue pathway."
            await self.memory.log_audit(self.name, "strategy_validation", {"passed": is_aligned, "reason": reason, "metadata": metadata})
            return is_aligned, reason
        except Exception as e:
            reason = f"Gate Epsilon validation failed: {e}"
            await self.memory.log_audit(self.name, "strategy_validation", {"passed": False, "reason": reason, "metadata": metadata})
            return False, reason

    def _check_revenue_alignment(self, output, task_description, metadata):
        """Placeholder for revenue alignment checks."""
        # Example: Check if output promotes specific products or services
        promoted_products = metadata.get("promoted_products", [])
        if not isinstance(output, str):
            return False

        for product in promoted_products:
            if product.lower() in output.lower():
                return True # Assume alignment if product is mentioned
        return False

class GateZeta:  # Budget Compliance
    def __init__(self, memory):
        self.memory = memory
        self.name = "Gate Zeta"

    async def validate(self, resource_usage, metadata):
        """Monitors resource usage and ensures budget compliance."""
        try:
            is_compliant = self._check_budget_compliance(resource_usage, metadata)
            reason = "Resource usage is within budget." if is_compliant else "Resource usage exceeds budget."
            await self.memory.log_audit(self.name, "budget_validation", {"passed": is_compliant, "reason": reason, "metadata": metadata, "resource_usage": resource_usage})
            return is_compliant, reason
        except Exception as e:
            reason = f"Gate Zeta validation failed: {e}"
            await self.memory.log_audit(self.name, "budget_validation", {"passed": False, "reason": reason, "metadata": metadata, "resource_usage": resource_usage})
            return False, reason

    def _check_budget_compliance(self, resource_usage, metadata):
        """Placeholder for budget compliance checks."""
        # Example: Check if CPU usage is below the threshold
        cpu_threshold = metadata.get("cpu_threshold", 0.8)
        if not isinstance(resource_usage, dict):
            return False

        cpu_usage = resource_usage.get("cpu_usage", 0.0)
        return cpu_usage <= cpu_threshold

# Triple-Gate Validator Orchestrator (v2.0)
# The CNS of Genesis Patent Validation

class TripleGateValidator:
    def __init__(self):
        self.memory = memory
        self.gate1 = FoundationGate(memory)
        self.gate2 = IntelligenceGate(memory)
        self.gate3 = RealtimeGate(memory)
        self.gate_alpha = GateAlpha(memory)
        self.gate_beta = GateBeta(memory)
        self.gate_gamma = GateGamma(memory)
        self.gate_delta = GateDelta(memory)
        self.gate_epsilon = GateEpsilon(memory)
        self.gate_zeta = GateZeta(memory)

    async def validate_worker_output(self, input_data, output, task_description, worker_id, metadata, resource_usage):
        """Run complete validation suite"""

        # Gate Alpha: Input Validation
        alpha_passed, alpha_reason = await self.gate_alpha.validate(input_data, metadata)
        if not alpha_passed:
            return self._generate_report(worker_id, False, "Input Validation Failed", {"alpha": {"passed": alpha_passed, "reason": alpha_reason}})

        # Gate Beta: Output Quality
        beta_passed, beta_reason = await self.gate_beta.validate(output, task_description, metadata)
        if not beta_passed:
            return self._generate_report(worker_id, False, "Output Quality Failed", {"beta": {"passed": beta_passed, "reason": beta_reason}})

        # Gate Gamma: Insight Purity
        gamma_passed, gamma_reason = await self.gate_gamma.validate(output, task_description, metadata)
        if not gamma_passed:
            return self._generate_report(worker_id, False, "Insight Purity Failed", {"gamma": {"passed": gamma_passed, "reason": gamma_reason}})

        # Gate Delta: Memory Integration (Example: Writing data to memory)
        delta_passed, delta_reason = await self.gate_delta.validate(output, worker_id, "write", metadata) # Using output as data and worker_id as key
        if not delta_passed:
            return self._generate_report(worker_id, False, "Memory Integration Failed", {"delta": {"passed": delta_passed, "reason": delta_reason}})

        # Gate Epsilon: Strategy Alignment
        epsilon_passed, epsilon_reason = await self.gate_epsilon.validate(output, task_description, metadata)
        if not epsilon_passed:
            return self._generate_report(worker_id, False, "Strategy Alignment Failed", {"epsilon": {"passed": epsilon_passed, "reason": epsilon_reason}})

        # Gate Zeta: Budget Compliance
        zeta_passed, zeta_reason = await self.gate_zeta.validate(resource_usage, metadata)
        if not zeta_passed:
            return self._generate_report(worker_id, False, "Budget Compliance Failed", {"zeta": {"passed": zeta_passed, "reason": zeta_reason}})

        # Gate 1: Foundation (P1, P4, P8)
        g1_score, g1_checks = self.gate1.validate(output, worker_id, metadata)
        
        # Gate 2: Intelligence (P5, P6, P3)
        g2_score, g2_checks = self.gate2.validate(output, task_description, worker_id, metadata)
        
        # Gate 3: Real-Time (P2, P7, P9)
        g3_score, g3_checks = self.gate3.validate(output, task_description, worker_id, metadata)
        
        # Calculate overall score
        overall_score = (g1_score + g2_score + g3_score) / 3
        passed = overall_score >= 0.8
        
        report = {
            "timestamp": datetime.utcnow().isoformat(),
            "worker_id": worker_id,
            "passed": passed,
            "overall_score": overall_score,
            "gates": {
                "foundation": {"score": g1_score, "checks": g1_checks},
                "intelligence": {"score": g2_score, "checks": g2_checks},
                "realtime": {"score": g3_score, "checks": g3_checks},
                "alpha": {"passed": alpha_passed, "reason": alpha_reason},
                "beta": {"passed": beta_passed, "reason": beta_reason},
                "gamma": {"passed": gamma_passed, "reason": gamma_reason},
                "delta": {"passed": delta_passed, "reason": delta_reason},
                "epsilon": {"passed": epsilon_passed, "reason": epsilon_reason},
                "zeta": {"passed": zeta_passed, "reason": zeta_reason}
            }
        }
        
        # Log to immutable audit trail (Patent P4)
        try:
            await self.memory.log_audit("triple_gate_validation", worker_id, report)
        except Exception as e:
            print(f"[WARNING] Audit logging failed: {e}")
            
        # Update worker trust (Patent P9)
        try:
            await self.memory.update_worker_trust(worker_id, passed)
        except Exception as e:
            print(f"[WARNING] Trust update failed: {e}")
            
        return report

    def _generate_report(self, worker_id, passed, message, gate_results):
        report = {
            "timestamp": datetime.utcnow().isoformat(),
            "worker_id": worker_id,
            "passed": passed,
            "message": message,
            "gates": gate_results
        }

        # Log to immutable audit trail (Patent P4)
        try:
            asyncio.run(self.memory.log_audit("triple_gate_validation", worker_id, report))
        except Exception as e:
            print(f"[WARNING] Audit logging failed: {e}")

        # Update worker trust (Patent P9)
        try:
            asyncio.run(self.memory.update_worker_trust(worker_id, passed))
        except Exception as e:
            print(f"[WARNING] Trust update failed: {e}")

        return report

# Global validator instance
validator = TripleGateValidator()