mirror of
https://github.com/router-for-me/CLIProxyAPI.git
synced 2026-02-02 20:40:52 +08:00
230 lines
9.9 KiB
Go
230 lines
9.9 KiB
Go
// Package claude provides request translation functionality for Claude Code API compatibility.
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// This package handles the conversion of Claude Code API requests into Gemini CLI-compatible
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// JSON format, transforming message contents, system instructions, and tool declarations
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// into the format expected by Gemini CLI API clients. It performs JSON data transformation
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// to ensure compatibility between Claude Code API format and Gemini CLI API's expected format.
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package claude
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import (
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"bytes"
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"encoding/json"
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"strings"
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client "github.com/router-for-me/CLIProxyAPI/v6/internal/interfaces"
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"github.com/router-for-me/CLIProxyAPI/v6/internal/translator/gemini/common"
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"github.com/router-for-me/CLIProxyAPI/v6/internal/util"
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"github.com/tidwall/gjson"
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"github.com/tidwall/sjson"
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)
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const geminiCLIClaudeThoughtSignature = "skip_thought_signature_validator"
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// ConvertClaudeRequestToAntigravity parses and transforms a Claude Code API request into Gemini CLI API format.
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// It extracts the model name, system instruction, message contents, and tool declarations
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// from the raw JSON request and returns them in the format expected by the Gemini CLI API.
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// The function performs the following transformations:
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// 1. Extracts the model information from the request
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// 2. Restructures the JSON to match Gemini CLI API format
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// 3. Converts system instructions to the expected format
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// 4. Maps message contents with proper role transformations
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// 5. Handles tool declarations and tool choices
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// 6. Maps generation configuration parameters
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//
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// Parameters:
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// - modelName: The name of the model to use for the request
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// - rawJSON: The raw JSON request data from the Claude Code API
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// - stream: A boolean indicating if the request is for a streaming response (unused in current implementation)
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//
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// Returns:
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// - []byte: The transformed request data in Gemini CLI API format
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func ConvertClaudeRequestToAntigravity(modelName string, inputRawJSON []byte, _ bool) []byte {
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rawJSON := bytes.Clone(inputRawJSON)
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rawJSON = bytes.Replace(rawJSON, []byte(`"url":{"type":"string","format":"uri",`), []byte(`"url":{"type":"string",`), -1)
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// system instruction
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var systemInstruction *client.Content
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systemResult := gjson.GetBytes(rawJSON, "system")
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if systemResult.IsArray() {
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systemResults := systemResult.Array()
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systemInstruction = &client.Content{Role: "user", Parts: []client.Part{}}
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for i := 0; i < len(systemResults); i++ {
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systemPromptResult := systemResults[i]
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systemTypePromptResult := systemPromptResult.Get("type")
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if systemTypePromptResult.Type == gjson.String && systemTypePromptResult.String() == "text" {
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systemPrompt := systemPromptResult.Get("text").String()
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systemPart := client.Part{Text: systemPrompt}
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systemInstruction.Parts = append(systemInstruction.Parts, systemPart)
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}
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}
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if len(systemInstruction.Parts) == 0 {
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systemInstruction = nil
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}
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}
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// contents
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contents := make([]client.Content, 0)
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messagesResult := gjson.GetBytes(rawJSON, "messages")
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if messagesResult.IsArray() {
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messageResults := messagesResult.Array()
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for i := 0; i < len(messageResults); i++ {
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messageResult := messageResults[i]
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roleResult := messageResult.Get("role")
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if roleResult.Type != gjson.String {
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continue
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}
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role := roleResult.String()
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if role == "assistant" {
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role = "model"
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}
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clientContent := client.Content{Role: role, Parts: []client.Part{}}
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contentsResult := messageResult.Get("content")
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if contentsResult.IsArray() {
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contentResults := contentsResult.Array()
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for j := 0; j < len(contentResults); j++ {
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contentResult := contentResults[j]
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contentTypeResult := contentResult.Get("type")
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if contentTypeResult.Type == gjson.String && contentTypeResult.String() == "thinking" {
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// Claude "thinking" blocks are internal-only. They also require a valid provider signature
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// when replayed as conversation history. Since we cannot mint signatures, only forward
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// thinking blocks when the client provides a non-empty signature; otherwise, drop them.
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signatureResult := contentResult.Get("signature")
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if signatureResult.Type == gjson.String && signatureResult.String() != "" {
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prompt := contentResult.Get("thinking").String()
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clientContent.Parts = append(clientContent.Parts, client.Part{
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Text: prompt,
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Thought: true,
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ThoughtSignature: signatureResult.String(),
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})
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}
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} else if contentTypeResult.Type == gjson.String && contentTypeResult.String() == "text" {
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prompt := contentResult.Get("text").String()
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clientContent.Parts = append(clientContent.Parts, client.Part{Text: prompt})
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} else if contentTypeResult.Type == gjson.String && contentTypeResult.String() == "tool_use" {
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functionName := contentResult.Get("name").String()
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functionArgs := contentResult.Get("input").String()
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functionID := contentResult.Get("id").String()
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var args map[string]any
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if err := json.Unmarshal([]byte(functionArgs), &args); err == nil {
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if strings.Contains(modelName, "claude") {
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clientContent.Parts = append(clientContent.Parts, client.Part{
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FunctionCall: &client.FunctionCall{ID: functionID, Name: functionName, Args: args},
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})
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} else {
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clientContent.Parts = append(clientContent.Parts, client.Part{
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FunctionCall: &client.FunctionCall{ID: functionID, Name: functionName, Args: args},
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ThoughtSignature: geminiCLIClaudeThoughtSignature,
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})
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}
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}
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} else if contentTypeResult.Type == gjson.String && contentTypeResult.String() == "tool_result" {
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toolCallID := contentResult.Get("tool_use_id").String()
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if toolCallID != "" {
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funcName := toolCallID
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toolCallIDs := strings.Split(toolCallID, "-")
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if len(toolCallIDs) > 1 {
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funcName = strings.Join(toolCallIDs[0:len(toolCallIDs)-2], "-")
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}
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functionResponseResult := contentResult.Get("content")
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responseData := ""
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if functionResponseResult.Type == gjson.String {
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responseData = functionResponseResult.String()
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} else {
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responseData = contentResult.Get("content").Raw
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}
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functionResponse := client.FunctionResponse{ID: toolCallID, Name: funcName, Response: map[string]interface{}{"result": responseData}}
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clientContent.Parts = append(clientContent.Parts, client.Part{FunctionResponse: &functionResponse})
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}
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} else if contentTypeResult.Type == gjson.String && contentTypeResult.String() == "image" {
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sourceResult := contentResult.Get("source")
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if sourceResult.Get("type").String() == "base64" {
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inlineData := &client.InlineData{
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MimeType: sourceResult.Get("media_type").String(),
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Data: sourceResult.Get("data").String(),
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}
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clientContent.Parts = append(clientContent.Parts, client.Part{InlineData: inlineData})
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}
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}
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}
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if len(clientContent.Parts) > 0 {
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contents = append(contents, clientContent)
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}
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} else if contentsResult.Type == gjson.String {
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prompt := contentsResult.String()
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contents = append(contents, client.Content{Role: role, Parts: []client.Part{{Text: prompt}}})
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}
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}
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}
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// tools
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var tools []client.ToolDeclaration
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toolsResult := gjson.GetBytes(rawJSON, "tools")
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if toolsResult.IsArray() {
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tools = make([]client.ToolDeclaration, 1)
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tools[0].FunctionDeclarations = make([]any, 0)
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toolsResults := toolsResult.Array()
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for i := 0; i < len(toolsResults); i++ {
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toolResult := toolsResults[i]
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inputSchemaResult := toolResult.Get("input_schema")
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if inputSchemaResult.Exists() && inputSchemaResult.IsObject() {
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inputSchema := inputSchemaResult.Raw
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tool, _ := sjson.Delete(toolResult.Raw, "input_schema")
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tool, _ = sjson.SetRaw(tool, "parametersJsonSchema", inputSchema)
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tool, _ = sjson.Delete(tool, "strict")
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tool, _ = sjson.Delete(tool, "input_examples")
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var toolDeclaration any
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if err := json.Unmarshal([]byte(tool), &toolDeclaration); err == nil {
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tools[0].FunctionDeclarations = append(tools[0].FunctionDeclarations, toolDeclaration)
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}
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}
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}
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} else {
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tools = make([]client.ToolDeclaration, 0)
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}
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// Build output Gemini CLI request JSON
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out := `{"model":"","request":{"contents":[]}}`
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out, _ = sjson.Set(out, "model", modelName)
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if systemInstruction != nil {
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b, _ := json.Marshal(systemInstruction)
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out, _ = sjson.SetRaw(out, "request.systemInstruction", string(b))
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}
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if len(contents) > 0 {
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b, _ := json.Marshal(contents)
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out, _ = sjson.SetRaw(out, "request.contents", string(b))
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}
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if len(tools) > 0 && len(tools[0].FunctionDeclarations) > 0 {
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b, _ := json.Marshal(tools)
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out, _ = sjson.SetRaw(out, "request.tools", string(b))
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}
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// Map Anthropic thinking -> Gemini thinkingBudget/include_thoughts when type==enabled
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if t := gjson.GetBytes(rawJSON, "thinking"); t.Exists() && t.IsObject() && util.ModelSupportsThinking(modelName) {
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if t.Get("type").String() == "enabled" {
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if b := t.Get("budget_tokens"); b.Exists() && b.Type == gjson.Number {
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budget := int(b.Int())
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out, _ = sjson.Set(out, "request.generationConfig.thinkingConfig.thinkingBudget", budget)
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out, _ = sjson.Set(out, "request.generationConfig.thinkingConfig.include_thoughts", true)
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}
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}
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}
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if v := gjson.GetBytes(rawJSON, "temperature"); v.Exists() && v.Type == gjson.Number {
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out, _ = sjson.Set(out, "request.generationConfig.temperature", v.Num)
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}
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if v := gjson.GetBytes(rawJSON, "top_p"); v.Exists() && v.Type == gjson.Number {
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out, _ = sjson.Set(out, "request.generationConfig.topP", v.Num)
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}
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if v := gjson.GetBytes(rawJSON, "top_k"); v.Exists() && v.Type == gjson.Number {
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out, _ = sjson.Set(out, "request.generationConfig.topK", v.Num)
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}
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if v := gjson.GetBytes(rawJSON, "max_tokens"); v.Exists() && v.Type == gjson.Number {
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out, _ = sjson.Set(out, "request.generationConfig.maxOutputTokens", v.Num)
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}
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outBytes := []byte(out)
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outBytes = common.AttachDefaultSafetySettings(outBytes, "request.safetySettings")
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return outBytes
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}
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