feat: add commands for managing organizations and users

Introduce `AddUserToOrganization`, `RemoveAPIKey`, and 
`RemoveOrganization` commands to enhance organization 
management. Implement validation for user addition and 
API key removal. Update GraphQL schema to support new 
mutations and add caching for the new events, ensuring 
that organizations and their relationships are accurately 
represented in the cache.

cache/cache.go

@@ -53,6 +53,17 @@ func (c *Cache) OrganizationsByUser(sub string) []domain.Organization {
 	return orgs
 }
 
+func (c *Cache) AllOrganizations() []domain.Organization {
+	c.mu.RLock()
+	defer c.mu.RUnlock()
+
+	orgs := make([]domain.Organization, 0, len(c.organizations))
+	for _, org := range c.organizations {
+		orgs = append(orgs, org)
+	}
+	return orgs
+}
+
 func (c *Cache) ApiKeyByKey(key string) *domain.APIKey {
 	c.mu.RLock()
 	defer c.mu.RUnlock()
@@ -100,6 +111,16 @@ func (c *Cache) Update(msg any, _ goamqp.Headers) (any, error) {
 		c.organizations[m.ID.String()] = o
 		c.addUser(m.Initiator, o)
 		c.logger.With("org_id", m.ID.String(), "event", "OrganizationAdded").Debug("cache updated")
+	case *domain.UserAddedToOrganization:
+		org, exists := c.organizations[m.ID.String()]
+		if exists {
+			m.UpdateOrganization(&org)
+			c.organizations[m.ID.String()] = org
+			c.addUser(m.UserId, org)
+			c.logger.With("org_id", m.ID.String(), "user_id", m.UserId, "event", "UserAddedToOrganization").Debug("cache updated")
+		} else {
+			c.logger.With("org_id", m.ID.String(), "event", "UserAddedToOrganization").Warn("organization not found in cache")
+		}
 	case *domain.APIKeyAdded:
 		key := domain.APIKey{
 			Name:           m.Name,
@@ -117,6 +138,63 @@ func (c *Cache) Update(msg any, _ goamqp.Headers) (any, error) {
 		org.APIKeys = append(org.APIKeys, key)
 		c.organizations[m.OrganizationId] = org
 		c.logger.With("org_id", m.OrganizationId, "key_name", m.Name, "event", "APIKeyAdded").Debug("cache updated")
+	case *domain.APIKeyRemoved:
+		orgId := m.ID.String()
+		org, exists := c.organizations[orgId]
+		if exists {
+			// Remove from organization's API keys list
+			for i, key := range org.APIKeys {
+				if key.Name == m.KeyName {
+					org.APIKeys = append(org.APIKeys[:i], org.APIKeys[i+1:]...)
+					break
+				}
+			}
+			c.organizations[orgId] = org
+			// Remove from apiKeys map
+			delete(c.apiKeys, apiKeyId(orgId, m.KeyName))
+			c.logger.With("org_id", orgId, "key_name", m.KeyName, "event", "APIKeyRemoved").Debug("cache updated")
+		} else {
+			c.logger.With("org_id", orgId, "event", "APIKeyRemoved").Warn("organization not found in cache")
+		}
+	case *domain.OrganizationRemoved:
+		orgId := m.ID.String()
+		org, exists := c.organizations[orgId]
+		if exists {
+			// Remove all API keys for this organization
+			for _, key := range org.APIKeys {
+				delete(c.apiKeys, apiKeyId(orgId, key.Name))
+			}
+			// Remove organization from all users
+			for userId, userOrgs := range c.users {
+				for i, userOrgId := range userOrgs {
+					if userOrgId == orgId {
+						c.users[userId] = append(userOrgs[:i], userOrgs[i+1:]...)
+						break
+					}
+				}
+				// If user has no more organizations, remove from map
+				if len(c.users[userId]) == 0 {
+					delete(c.users, userId)
+				}
+			}
+			// Remove services for this organization
+			if refs, exists := c.services[orgId]; exists {
+				for ref := range refs {
+					// Remove all subgraphs for this org/ref combination
+					for service := range refs[ref] {
+						delete(c.subGraphs, subGraphKey(orgId, ref, service))
+					}
+					// Remove lastUpdate for this org/ref
+					delete(c.lastUpdate, refKey(orgId, ref))
+				}
+				delete(c.services, orgId)
+			}
+			// Remove organization
+			delete(c.organizations, orgId)
+			c.logger.With("org_id", orgId, "event", "OrganizationRemoved").Debug("cache updated")
+		} else {
+			c.logger.With("org_id", orgId, "event", "OrganizationRemoved").Warn("organization not found in cache")
+		}
 	case *domain.SubGraphUpdated:
 		c.updateSubGraph(m.OrganizationId, m.Ref, m.ID.String(), m.Service, m.Time)
 		c.logger.With("org_id", m.OrganizationId, "ref", m.Ref, "service", m.Service, "event", "SubGraphUpdated").Debug("cache updated")