import json
from datetime import datetime

class BaseAgent:
    """Base interface for v43 W@W Agents."""
    def __init__(self, name, role, config=None):
        self.name = name
        self.role = role
        self.config = config or {}
    
    def measure(self, session_data):
        """Analyze session and return metrics."""
        raise NotImplementedError
        
    def veto(self, metrics):
        """Return True if soft floor violated."""
        return False
        
    def generate_trigger(self, next_stage, session_id):
        """Generate Zero-Friction Copy-Paste Trigger."""
        return f"\nCopy-paste:\n/{next_stage} {session_id}"

class SimulatedAgent(BaseAgent):
    """Simulated Agent for Phase 1 proof-of-concept."""
    def measure(self, session_data):
        # Simulation Logic: Return Pass scores by default
        # In a real implementation, this would use an LLM call
        return {
            "agent": self.name,
            "role": self.role,
            "timestamp": datetime.now().isoformat(),
            "score": 0.98, # High pass
            "details": "Simulated PASS for Phase 1"
        }
        
    def veto(self, metrics):
        # Simple threshold check
        score = metrics.get("score", 0)
        return score < 0.5

class FederationEngine:
    """Orchestrates the W@W Agents."""
    def __init__(self, config_path=None):
        self.agents = {}
        # Load from config if provided, else defaults
        # For Phase 1 simplified:
        self.agents["@WELL"] = SimulatedAgent("@WELL", "Clarity_Optimizer")
        self.agents["@GEOX"] = SimulatedAgent("@GEOX", "Fact_Checker")
        self.agents["@LAW"] = SimulatedAgent("@LAW", "Floor_Auditor")
        
    def run_all(self, session_data):
        results = {}
        for name, agent in self.agents.items():
            results[name] = agent.measure(session_data)
        return results
        
    def check_veto(self, results):
        vetoes = []
        for name, metric in results.items():
            if self.agents[name].veto(metric):
                vetoes.append(name)
        return vetoes
