-- ============================================================================
-- 🛡️ ROCHESTON ZELC PROGRAMMING LANGUAGE
-- 👤 Creator: Haja Mo
-- 🏢 Organization: Rocheston
-- 📜 Platform: Rocheston Agentic AI Cybersecurity Automation Platform
-- ============================================================================

-- Playbook: Zero Trust Continuous Verification (ZT Keywords)
-- Intent: Demonstrates 'ztna', 'device_posture', 'jit_access', and 'trust_score'. 
-- Implements "Never Trust, Always Verify" logic for critical resource access.
-- Infrastructure: ZTNA Gateway, Policy Engine (PDP/PEP), Entra ID, Rosecoin.
-- Note: 'continuous_verification' runs every 5 minutes to ensure posture hasn't drifted.

package soc.zero_trust_ops
use identity, policy, network, slack, rosecoin

-- ============================================================================
-- 1. CONFIGURATION GOVERNORS (Strongly Typed)
-- ============================================================================
⚙️ keep MIN_TRUST_SCORE: Integer = 80
⚙️ keep SESSION_TTL: Duration = 1h
⚙️ keep ENFORCEMENT_MODE: String = "STRICT"

-- ============================================================================
-- 2. THE ENTRY POINT (The Check Block)
-- ============================================================================
🔥 check ZeroTrustAccessRequest
  
  -- Trigger Gate: User requests access to 'Production-SQL-Cluster' via ZTNA
  ⚠️ when access_request_received for "Production-SQL-Cluster"
    
    🔹 set request_context: Object = event.access_context
    🔹 set subject_user: identity = event.principal
    
    🚨 alert info message "ZERO TRUST: Evaluating access for {subject_user} to Production Cluster."

    -- ============================================================================
    -- 3. THE POSTURE & RISK LAYER (device_posture, trust_score, posture_check)
    -- ============================================================================
    ⚡ do
      
      -- Action 1: Execute a 'posture_check' on the requesting device
      -- Checks for disk encryption, OS patch level, and EDR status.
      🔹 set current_posture: device_posture = identity check_posture for subject_user.device
      
      -- Action 2: Calculate the dynamic 'trust_score' based on context
      -- Voice-friendly: "Calculate trust_score..."
      🔹 set score: trust_score = policy calculate_trust subject_user context request_context
      
      -- Action 3: Apply Risk-Based Access logic
      ⚠️ when score < MIN_TRUST_SCORE or current_posture.is_compliant == false
         🚨 alert warning message "POSTURE FAILURE: Trust Score {score} is below threshold. Triggering step_up_auth."
         
         -- Action 4: Force Step-Up Authentication (MFA/Biometric)
         -- Voice-friendly: "Trigger step_up_auth..."
         ☁️ identity trigger_step_up_auth for subject_user
      🔴 end

      -- ============================================================================
      -- 4. THE POLICY ENGINE (pdp, pep, conditional_access)
      -- ============================================================================
      -- Action 5: Consult the Policy Decision Point (PDP) for the final verdict
      🔹 set decision: policy_decision = policy_engine evaluate_request subject_user resource "Production-SQL-Cluster"
      
      ⚠️ when decision.action == "DENY"
         🚨 alert critical message "ACCESS DENIED: Policy Engine rejected request for {subject_user}."
         ☁️ network policy_enforcement block subject_user
         
         -- Action 6: Provide 'breakglass' option for verified 'emergency_access'
         ✨ notify subject_user message "Access Denied. Use 'breakglass' protocol if this is a production emergency."
      🔴 end

      -- ============================================================================
      -- 5. THE PRIVILEGE LAYER (jit_access, least_privilege, rbac)
      -- ============================================================================
      -- Action 7: Grant Just-In-Time (JIT) Access for a limited window
      -- This adheres to 'least_privilege' by ensuring access is not permanent.
      ☁️ identity grant_jit_access for subject_user to "Production-SQL-Cluster" duration SESSION_TTL
      
      -- Action 8: Implement 'continuous_verification' during the session
      ☁️ policy enable_continuous_auth for subject_user interval "5m"

      -- Action 9: Notify the Access Governance team
      📡 notify slack channel "#zero-trust-audit" message "🛡️ *ZTNA Session Established* \n*User:* `{subject_user}` \n*Trust Score:* `{score}` \n*Mode:* `JIT_ACCESS` \n*Status:* Posture Verified. Continuous Auth Active."

      -- ============================================================================
      -- 6. EVIDENCE & PROOF
      -- ============================================================================
      📝 evidence record "Zero_Trust_Decision_Audit" details {
          user: subject_user,
          posture: current_posture,
          trust: score,
          action: "ZERO_TRUST_VERIFICATION_SUCCESS"
      }
      
      -- Anchor the policy decision and trust score to Rosecoin for auditability
      -- This proves why access was granted or denied at a specific point in time.
      ⛓️ rosecoin anchor evidence_pack "latest"
      
    🔴 end
  🔴 end
🔴 end