Changeset 0.29.1 (#196)

server/handlers/provider_resolver_adapter.go

@@ -0,0 +1,51 @@
+// Package handlers — provider_resolver_adapter.go
+//
+// v0.29.1 CS2: Adapter that satisfies sandbox.ProviderResolver using
+// ResolveProviderConfig + providers.Get. Avoids circular dependency
+// (sandbox → handlers → sandbox) by having handlers implement the
+// sandbox-defined interface.
+package handlers
+
+import (
+	"context"
+	"fmt"
+
+	"git.gobha.me/xcaliber/chat-switchboard/crypto"
+	"git.gobha.me/xcaliber/chat-switchboard/providers"
+	"git.gobha.me/xcaliber/chat-switchboard/sandbox"
+	"git.gobha.me/xcaliber/chat-switchboard/store"
+)
+
+// ProviderResolverAdapter implements sandbox.ProviderResolver using
+// the existing ResolveProviderConfig function and provider registry.
+type ProviderResolverAdapter struct {
+	stores store.Stores
+	vault  *crypto.KeyResolver
+}
+
+// NewProviderResolverAdapter creates an adapter for Starlark provider resolution.
+func NewProviderResolverAdapter(stores store.Stores, vault *crypto.KeyResolver) *ProviderResolverAdapter {
+	return &ProviderResolverAdapter{stores: stores, vault: vault}
+}
+
+// Resolve satisfies sandbox.ProviderResolver. It resolves the provider
+// config via the BYOK chain and returns the provider instance + config.
+func (a *ProviderResolverAdapter) Resolve(ctx context.Context, userID, channelID, providerConfigID, model string) (*sandbox.ProviderResolution, error) {
+	res, err := ResolveProviderConfig(a.stores, a.vault, userID, channelID, providerConfigID, model)
+	if err != nil {
+		return nil, err
+	}
+
+	provider, err := providers.Get(res.ProviderID)
+	if err != nil {
+		return nil, fmt.Errorf("provider unavailable: %w", err)
+	}
+
+	return &sandbox.ProviderResolution{
+		Provider:   provider,
+		Config:     res.Config,
+		ProviderID: res.ProviderID,
+		Model:      res.Model,
+		ConfigID:   res.ConfigID,
+	}, nil
+}