Add support for integers and tool configuration in schema handling

This update introduces support for `jsonschema.Integer` types and updates the logic to handle nested items in schemas. Added a new default error log for unknown types using `slog.Error`. Also, integrated tool configuration with a `FunctionCallingConfig` when `dontRequireTool` is false.

google.go

@@ -4,10 +4,10 @@ import (
 	"context"
 	"encoding/json"
 	"fmt"
-
-	"github.com/sashabaranov/go-openai/jsonschema"
+	"log/slog"
 
 	"github.com/google/generative-ai-go/genai"
+	"github.com/sashabaranov/go-openai/jsonschema"
 	"google.golang.org/api/option"
 )
 
@@ -39,6 +39,9 @@ func (g google) requestToChatHistory(in Request, model *genai.GenerativeModel) (
 		case jsonschema.String:
 			res.Type = genai.TypeString
 
+		case jsonschema.Integer:
+			res.Type = genai.TypeInteger
+
 		case jsonschema.Number:
 			res.Type = genai.TypeNumber
 
@@ -47,6 +50,11 @@ func (g google) requestToChatHistory(in Request, model *genai.GenerativeModel) (
 
 		default:
 			res.Type = genai.TypeUnspecified
+			slog.Error("unknown type in go_llm/google.go!requestToChatHistory", "type", in.Type)
+		}
+
+		if in.Items != nil {
+			res.Items = openAiSchemaToGenAISchema(*in.Items)
 		}
 
 		res.Description = in.Description
@@ -77,6 +85,12 @@ func (g google) requestToChatHistory(in Request, model *genai.GenerativeModel) (
 				},
 			})
 		}
+
+		if !in.Toolbox.dontRequireTool {
+			res.ToolConfig = &genai.ToolConfig{FunctionCallingConfig: &genai.FunctionCallingConfig{
+				Mode: genai.FunctionCallingAny,
+			}}
+		}
 	}
 
 	cs := res.StartChat()