Remove System User IDs

// Remove deprecated bot services
async function decommissionBotServices() {
    const deprecatedBots = [
        'old_chatbot_v1',
        'legacy_assistant',
        'deprecated_analyzer'
    ];
    
    try {
        // Remove system user privileges
        await removeSystemUIDs(deprecatedBots);
        
        // Disable bot services
        for (const bot of deprecatedBots) {
            await disableBotService(bot);
            await revokeAPIKeys(bot);
        }
        
        console.log('Bot services decommissioned successfully');
    } catch (error) {
        console.error('Failed to decommission bot services:', error);
    }
}

// Emergency removal of compromised system users
async function emergencyPrivilegeRevocation(compromisedUIDs) {
    try {
        // Immediately revoke system privileges
        await removeSystemUIDs(compromisedUIDs);
        
        // Force disconnect all sessions
        for (const uid of compromisedUIDs) {
            await forceDeviceQuit(uid);
        }
        
        // Log security incident
        await logSecurityIncident({
            type: 'privilege_revocation',
            affected_users: compromisedUIDs,
            timestamp: new Date().toISOString(),
            reason: 'security_incident'
        });
        
        // Notify security team
        await notifySecurityTeam(compromisedUIDs);
        
    } catch (error) {
        console.error('Emergency revocation failed:', error);
        // Escalate to manual intervention
        await escalateToManualIntervention(compromisedUIDs);
    }
}

// Regular cleanup of inactive system users
async function cleanupInactiveSystemUsers() {
    try {
        // Get current system users
        const systemUIDs = await getSystemUIDs();
        
        // Check activity for each system user
        const inactiveUsers = [];
        for (const uid of systemUIDs) {
            const lastActivity = await getLastActivity(uid);
            const daysSinceActivity = (Date.now() - lastActivity) / (1000 * 60 * 60 * 24);
            
            if (daysSinceActivity > 90) { // 90 days inactive
                inactiveUsers.push(uid);
            }
        }
        
        if (inactiveUsers.length > 0) {
            // Request approval for removal
            const approved = await requestCleanupApproval(inactiveUsers);
            
            if (approved) {
                await removeSystemUIDs(inactiveUsers);
                console.log(`Cleaned up ${inactiveUsers.length} inactive system users`);
            }
        }
        
    } catch (error) {
        console.error('Cleanup operation failed:', error);
    }
}

// Schedule regular cleanup
setInterval(cleanupInactiveSystemUsers, 7 * 24 * 60 * 60 * 1000); // Weekly

// Migrate from old service to new service
async function migrateSystemService(oldServiceUID, newServiceUID) {
    try {
        // Add new service as system user
        await addSystemUIDs([newServiceUID]);
        
        // Configure new service with same permissions
        await migrateServiceConfiguration(oldServiceUID, newServiceUID);
        
        // Test new service functionality
        const testResult = await testServiceFunctionality(newServiceUID);
        
        if (testResult.success) {
            // Remove old service from system users
            await removeSystemUIDs([oldServiceUID]);
            
            // Gracefully shutdown old service
            await gracefulServiceShutdown(oldServiceUID);
            
            console.log(`Successfully migrated from ${oldServiceUID} to ${newServiceUID}`);
        } else {
            // Rollback if test fails
            await removeSystemUIDs([newServiceUID]);
            throw new Error('Service migration test failed');
        }
        
    } catch (error) {
        console.error('Service migration failed:', error);
        // Ensure old service remains functional
        await ensureServiceHealth(oldServiceUID);
    }
}

// Safely remove multiple system users with validation
async function bulkRemoveSystemUsers(uidsToRemove, options = {}) {
    const { 
        validateBeforeRemoval = true,
        requireApproval = true,
        batchSize = 5 
    } = options;
    
    try {
        if (validateBeforeRemoval) {
            // Validate each user before removal
            const validationResults = await validateUsersForRemoval(uidsToRemove);
            const invalidUsers = validationResults.filter(r => !r.canRemove);
            
            if (invalidUsers.length > 0) {
                console.warn('Cannot remove users:', invalidUsers.map(u => u.uid));
                uidsToRemove = validationResults
                    .filter(r => r.canRemove)
                    .map(r => r.uid);
            }
        }
        
        if (requireApproval) {
            const approved = await requestBulkRemovalApproval(uidsToRemove);
            if (!approved) {
                throw new Error('Bulk removal not approved');
            }
        }
        
        // Process in batches
        const batches = chunkArray(uidsToRemove, batchSize);
        const results = [];
        
        for (const batch of batches) {
            try {
                await removeSystemUIDs(batch);
                results.push({ batch, success: true });
                
                // Small delay between batches
                await delay(500);
            } catch (error) {
                results.push({ batch, success: false, error: error.message });
            }
        }
        
        return results;
        
    } catch (error) {
        console.error('Bulk removal operation failed:', error);
        throw error;
    }
}

// Validate users before removal
async function validateUserForRemoval(uid) {
    const checks = {
        isSystemUser: await isInSystemUserList(uid),
        hasActiveConnections: await hasActiveConnections(uid),
        hasCriticalServices: await hasCriticalServices(uid),
        hasRecentActivity: await hasRecentActivity(uid, 24), // 24 hours
        isProtectedUser: await isProtectedUser(uid)
    };
    
    const canRemove = checks.isSystemUser && 
                     !checks.isProtectedUser && 
                     !checks.hasCriticalServices;
    
    return {
        uid,
        canRemove,
        checks,
        warnings: generateRemovalWarnings(checks)
    };
}

// Comprehensive audit logging
async function auditSystemUserRemoval(uids, adminUser, reason) {
    const auditEntry = {
        action: 'system_user_removal',
        timestamp: new Date().toISOString(),
        admin_user: adminUser,
        affected_users: uids,
        reason: reason,
        system_state_before: await captureSystemState(),
        ip_address: await getClientIP(),
        user_agent: await getClientUserAgent()
    };
    
    await writeAuditLog(auditEntry);
    await notifyComplianceTeam(auditEntry);
}