instead of having an openai => google translation layer, just add sister functions to the types that construct the google request just like openai's

google.go

@@ -4,10 +4,8 @@ import (
 	"context"
 	"encoding/json"
 	"fmt"
-	"log/slog"
 
 	"github.com/google/generative-ai-go/genai"
-	"github.com/sashabaranov/go-openai/jsonschema"
 	"google.golang.org/api/option"
 )
 
@@ -25,62 +23,15 @@ func (g google) ModelVersion(modelVersion string) (ChatCompletion, error) {
 func (g google) requestToChatHistory(in Request, model *genai.GenerativeModel) (*genai.GenerativeModel, *genai.ChatSession, []genai.Part) {
 	res := *model
 
-	var openAiSchemaToGenAISchema func(in jsonschema.Definition) *genai.Schema
-	openAiSchemaToGenAISchema = func(in jsonschema.Definition) *genai.Schema {
-		res := genai.Schema{}
-
-		switch in.Type {
-		case jsonschema.Object:
-			res.Type = genai.TypeObject
-
-		case jsonschema.Array:
-			res.Type = genai.TypeArray
-
-		case jsonschema.String:
-			res.Type = genai.TypeString
-
-		case jsonschema.Integer:
-			res.Type = genai.TypeInteger
-
-		case jsonschema.Number:
-			res.Type = genai.TypeNumber
-
-		case jsonschema.Boolean:
-			res.Type = genai.TypeBoolean
-
-		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
-		res.Enum = in.Enum
-
-		res.Required = in.Required
-		if in.Properties != nil {
-			res.Properties = map[string]*genai.Schema{}
-
-			for k, v := range in.Properties {
-				res.Properties[k] = openAiSchemaToGenAISchema(v)
-			}
-		}
-
-		return &res
-	}
 	if in.Toolbox != nil {
 		for _, tool := range in.Toolbox.funcs {
-			def := tool.Parameters.Definition()
 
 			res.Tools = append(res.Tools, &genai.Tool{
 				FunctionDeclarations: []*genai.FunctionDeclaration{
 					{
 						Name:        tool.Name,
 						Description: tool.Description,
-						Parameters:  openAiSchemaToGenAISchema(def),
+						Parameters:  tool.Parameters.GoogleParameters(),
 					},
 				},
 			})