CrossRelay stage 2: Codex /v1/responses relay, config.toml manager, Codex page

internal/config/store.go

@@ -88,6 +88,21 @@ func (s *Store) ActiveClaude() *Provider {
 	return nil
 }
 
+// ActiveCodex returns the provider currently applied to Codex.
+func (s *Store) ActiveCodex() *Provider {
+	s.mu.Lock()
+	defer s.mu.Unlock()
+	if s.cfg.ActiveCodexID == "" {
+		return nil
+	}
+	for i := range s.cfg.Providers {
+		if s.cfg.Providers[i].ID == s.cfg.ActiveCodexID {
+			return s.cfg.Providers[i].clone()
+		}
+	}
+	return nil
+}
+
 // AddProvider validates and appends a provider.
 func (s *Store) AddProvider(name, preset, baseURL, apiKey string, models Models) (*Provider, error) {
 	s.mu.Lock()
@@ -128,6 +143,7 @@ func (s *Store) UpdateProvider(id, name, preset, baseURL, apiKey string, models
 	}
 	updated.ID = existing.ID
 	updated.EnabledForClaude = existing.EnabledForClaude
+	updated.EnabledForCodex = existing.EnabledForCodex
 	updated.CreatedAt = existing.CreatedAt
 	s.cfg.Providers[idx] = *updated
 	if err := s.saveLocked(); err != nil {
@@ -154,6 +170,9 @@ func (s *Store) DeleteProvider(id string) error {
 	if s.cfg.ActiveClaudeID == id {
 		s.cfg.ActiveClaudeID = ""
 	}
+	if s.cfg.ActiveCodexID == id {
+		s.cfg.ActiveCodexID = ""
+	}
 	return s.saveLocked()
 }
 
@@ -192,6 +211,50 @@ func (s *Store) ClearActiveClaude() error {
 	return s.saveLocked()
 }
 
+// ActivateCodex marks a provider as the one written into Codex's
+// config.toml and records it as active.
+func (s *Store) ActivateCodex(id string) (*Provider, error) {
+	s.mu.Lock()
+	defer s.mu.Unlock()
+	idx := -1
+	for i := range s.cfg.Providers {
+		if s.cfg.Providers[i].ID == id {
+			idx = i
+			break
+		}
+	}
+	if idx < 0 {
+		return nil, fmt.Errorf("provider %q not found", id)
+	}
+	s.cfg.Providers[idx].EnabledForCodex = true
+	s.cfg.ActiveCodexID = id
+	if err := s.saveLocked(); err != nil {
+		return nil, err
+	}
+	return s.cfg.Providers[idx].clone(), nil
+}
+
+// ClearActiveCodex forgets the active Codex provider without touching
+// the provider list (used after restoring the official config).
+func (s *Store) ClearActiveCodex() error {
+	s.mu.Lock()
+	defer s.mu.Unlock()
+	if s.cfg.ActiveCodexID == "" {
+		return nil
+	}
+	s.cfg.ActiveCodexID = ""
+	return s.saveLocked()
+}
+
+// SetCodexPriorProvider records (or clears) the model_provider value
+// that config.toml carried before CrossRelay took it over.
+func (s *Store) SetCodexPriorProvider(prior string) error {
+	s.mu.Lock()
+	defer s.mu.Unlock()
+	s.cfg.CodexPriorProvider = strings.TrimSpace(prior)
+	return s.saveLocked()
+}
+
 // SetGateway updates listener settings.
 func (s *Store) SetGateway(g Gateway) error {
 	g.PortMode = strings.TrimSpace(g.PortMode)