split ai runtime config helpers

internal/service/ai_runtime_config.go

@@ -0,0 +1,60 @@
+package service
+
+import (
+	"context"
+	"strings"
+
+	"go.uber.org/zap"
+)
+
+type aiRuntimeConfig struct {
+	Enabled  bool
+	Provider string
+	APIBase  string
+	APIKey   string
+	Model    string
+}
+
+func (a *AIService) resolveRuntimeConfig(ctx context.Context) aiRuntimeConfig {
+	out := aiRuntimeConfig{
+		Enabled:  a.cfg.AI.Enabled && strings.TrimSpace(a.cfg.AI.APIKey) != "",
+		Provider: strings.TrimSpace(a.cfg.AI.Provider),
+		APIBase:  strings.TrimSpace(a.cfg.AI.APIBase),
+		APIKey:   strings.TrimSpace(a.cfg.AI.APIKey),
+		Model:    strings.TrimSpace(a.cfg.AI.Model),
+	}
+	if out.Provider == "" {
+		out.Provider = "openai"
+	}
+	if out.APIBase == "" {
+		out.APIBase = "https://api.openai.com/v1"
+	}
+	if out.Model == "" {
+		out.Model = "gpt-4o-mini"
+	}
+
+	if a.apiConfig != nil {
+		resolved, err := a.apiConfig.Resolve(ctx, "openai")
+		if err != nil {
+			if a.log != nil {
+				a.log.Warn("ai: failed to resolve openai api config", zap.Error(err))
+			}
+			return out
+		}
+		if resolved.BaseURL != "" {
+			out.APIBase = strings.TrimSpace(resolved.BaseURL)
+		}
+		if resolved.APIKey != "" {
+			out.APIKey = strings.TrimSpace(resolved.APIKey)
+		}
+		if resolved.Enabled && out.APIKey != "" {
+			out.Enabled = true
+			out.Provider = "openai"
+			return out
+		}
+		if !resolved.Enabled && (resolved.APIKey != "" || resolved.BaseURL != "" || resolved.Extra != "") {
+			out.Enabled = false
+		}
+	}
+	return out
+}