feat: Add LM Studio compatibility

core/plugin_registry.go

@@ -18,6 +18,7 @@ import (
 	"github.com/danielmiessler/fabric/plugins/ai/dryrun"
 	"github.com/danielmiessler/fabric/plugins/ai/gemini"
 	"github.com/danielmiessler/fabric/plugins/ai/groq"
+	"github.com/danielmiessler/fabric/plugins/ai/lmstudio"
 	"github.com/danielmiessler/fabric/plugins/ai/mistral"
 	"github.com/danielmiessler/fabric/plugins/ai/ollama"
 	"github.com/danielmiessler/fabric/plugins/ai/openai"
@@ -54,7 +55,7 @@ func NewPluginRegistry(db *fsdb.Db) (ret *PluginRegistry, err error) {
 		gemini.NewClient(),
 		//gemini_openai.NewClient(),
 		anthropic.NewClient(), siliconcloud.NewClient(),
-		openrouter.NewClient(), mistral.NewClient(), deepseek.NewClient())
+		openrouter.NewClient(), lmstudio.NewClient(), mistral.NewClient(), deepseek.NewClient())
 	_ = ret.Configure()
 
 	return

plugins/ai/lmstudio/lmstudio.go

@@ -0,0 +1,358 @@
+package lmstudio
+
+import (
+	"bufio"
+	"bytes"
+	"context"
+	"encoding/json"
+	"fmt"
+	"io"
+	"net/http"
+
+	goopenai "github.com/sashabaranov/go-openai"
+
+	"github.com/danielmiessler/fabric/common"
+	"github.com/danielmiessler/fabric/plugins"
+)
+
+// NewClient creates a new LM Studio client with default configuration.
+func NewClient() (ret *Client) {
+	return NewClientCompatible("LM Studio", "http://localhost:1234/v1", nil)
+}
+
+// NewClientCompatible creates a new LM Studio client with custom configuration.
+func NewClientCompatible(vendorName string, defaultBaseUrl string, configureCustom func() error) (ret *Client) {
+	ret = &Client{}
+
+	if configureCustom == nil {
+		configureCustom = ret.configure
+	}
+	ret.PluginBase = &plugins.PluginBase{
+		Name:            vendorName,
+		EnvNamePrefix:   plugins.BuildEnvVariablePrefix(vendorName),
+		ConfigureCustom: configureCustom,
+	}
+	ret.ApiBaseURL = ret.AddSetupQuestion("API Base URL", false)
+	ret.ApiBaseURL.Value = defaultBaseUrl
+	return
+}
+
+// Client represents the LM Studio client.
+type Client struct {
+	*plugins.PluginBase
+	ApiBaseURL *plugins.SetupQuestion
+	HttpClient *http.Client
+}
+
+// configure sets up the HTTP client.
+func (c *Client) configure() error {
+	c.HttpClient = &http.Client{}
+	return nil
+}
+
+// Configure sets up the client configuration.
+func (c *Client) Configure() error {
+	return c.ConfigureCustom()
+}
+
+// ListModels returns a list of available models.
+func (c *Client) ListModels() ([]string, error) {
+	url := fmt.Sprintf("%s/models", c.ApiBaseURL.Value)
+
+	req, err := http.NewRequest("GET", url, nil)
+	if err != nil {
+		return nil, fmt.Errorf("failed to create request: %w", err)
+	}
+
+	resp, err := c.HttpClient.Do(req)
+	if err != nil {
+		return nil, fmt.Errorf("failed to send request: %w", err)
+	}
+	defer resp.Body.Close()
+
+	if resp.StatusCode != http.StatusOK {
+		return nil, fmt.Errorf("unexpected status code: %d", resp.StatusCode)
+	}
+
+	var result struct {
+		Data []struct {
+			ID string `json:"id"`
+		} `json:"data"`
+	}
+
+	if err := json.NewDecoder(resp.Body).Decode(&result); err != nil {
+		return nil, fmt.Errorf("failed to decode response: %w", err)
+	}
+
+	models := make([]string, len(result.Data))
+	for i, model := range result.Data {
+		models[i] = model.ID
+	}
+
+	return models, nil
+}
+
+// // SendStream sends a stream of messages (not implemented for LM Studio).
+// func (c *Client) SendStream(msgs []*goopenai.ChatCompletionMessage, opts *common.ChatOptions, channel chan string) error {
+// 	return fmt.Errorf("streaming is not currently supported for LM Studio")
+// }
+
+func (c *Client) SendStream(msgs []*goopenai.ChatCompletionMessage, opts *common.ChatOptions, channel chan string) error {
+	url := fmt.Sprintf("%s/chat/completions", c.ApiBaseURL.Value)
+
+	payload := map[string]interface{}{
+		"messages": msgs,
+		"model":    opts.Model,
+		"stream":   true, // Enable streaming
+	}
+
+	jsonPayload, err := json.Marshal(payload)
+	if err != nil {
+		return fmt.Errorf("failed to marshal payload: %w", err)
+	}
+
+	req, err := http.NewRequest("POST", url, bytes.NewBuffer(jsonPayload))
+	if err != nil {
+		return fmt.Errorf("failed to create request: %w", err)
+	}
+
+	req.Header.Set("Content-Type", "application/json")
+
+	resp, err := c.HttpClient.Do(req)
+	if err != nil {
+		return fmt.Errorf("failed to send request: %w", err)
+	}
+	defer resp.Body.Close()
+
+	if resp.StatusCode != http.StatusOK {
+		return fmt.Errorf("unexpected status code: %d", resp.StatusCode)
+	}
+
+	// Close channel when function exits
+	defer close(channel)
+
+	reader := bufio.NewReader(resp.Body)
+	for {
+		line, err := reader.ReadBytes('\n')
+		if err != nil {
+			if err == io.EOF {
+				break
+			}
+			return fmt.Errorf("error reading response: %w", err)
+		}
+
+		// Ignore empty lines
+		if len(line) == 0 {
+			continue
+		}
+
+		// Remove OpenAI-style prefix
+		if bytes.HasPrefix(line, []byte("data: ")) {
+			line = bytes.TrimPrefix(line, []byte("data: "))
+		}
+
+		// Handle [DONE] signal
+		if string(line) == "[DONE]" {
+			break
+		}
+
+		// Parse JSON response
+		var result map[string]interface{}
+		if err := json.Unmarshal(line, &result); err != nil {
+			continue
+		}
+
+		// Extract content from streaming chunks
+		choices, ok := result["choices"].([]interface{})
+		if !ok || len(choices) == 0 {
+			continue
+		}
+
+		delta, ok := choices[0].(map[string]interface{})["delta"].(map[string]interface{})
+		if !ok {
+			continue
+		}
+
+		content, _ := delta["content"].(string)
+
+		// Send data to channel
+		channel <- content
+	}
+
+	return nil
+}
+
+// Send sends a single message and returns the response.
+func (c *Client) Send(ctx context.Context, msgs []*goopenai.ChatCompletionMessage, opts *common.ChatOptions) (string, error) {
+	url := fmt.Sprintf("%s/chat/completions", c.ApiBaseURL.Value)
+
+	payload := map[string]interface{}{
+		"messages": msgs,
+		"model":    opts.Model,
+		// Add other options from opts if supported by LM Studio
+	}
+
+	jsonPayload, err := json.Marshal(payload)
+	if err != nil {
+		return "", fmt.Errorf("failed to marshal payload: %w", err)
+	}
+
+	req, err := http.NewRequestWithContext(ctx, "POST", url, bytes.NewBuffer(jsonPayload))
+	if err != nil {
+		return "", fmt.Errorf("failed to create request: %w", err)
+	}
+
+	req.Header.Set("Content-Type", "application/json")
+
+	resp, err := c.HttpClient.Do(req)
+	if err != nil {
+		return "", fmt.Errorf("failed to send request: %w", err)
+	}
+	defer resp.Body.Close()
+
+	if resp.StatusCode != http.StatusOK {
+		return "", fmt.Errorf("unexpected status code: %d", resp.StatusCode)
+	}
+
+	var result map[string]interface{}
+	if err := json.NewDecoder(resp.Body).Decode(&result); err != nil {
+		return "", fmt.Errorf("failed to decode response: %w", err)
+	}
+
+	choices, ok := result["choices"].([]interface{})
+	if !ok || len(choices) == 0 {
+		return "", fmt.Errorf("invalid response format: missing or empty choices")
+	}
+
+	message, ok := choices[0].(map[string]interface{})["message"].(map[string]interface{})
+	if !ok {
+		return "", fmt.Errorf("invalid response format: missing message in first choice")
+	}
+
+	content, ok := message["content"].(string)
+	if !ok {
+		return "", fmt.Errorf("invalid response format: missing or non-string content in message")
+	}
+
+	return content, nil
+}
+
+// Complete sends a completion request and returns the response.
+func (c *Client) Complete(ctx context.Context, prompt string, opts *common.ChatOptions) (string, error) {
+	url := fmt.Sprintf("%s/completions", c.ApiBaseURL.Value)
+
+	payload := map[string]interface{}{
+		"prompt": prompt,
+		"model":  opts.Model,
+		// Add other options from opts if supported by LM Studio
+	}
+
+	jsonPayload, err := json.Marshal(payload)
+	if err != nil {
+		return "", fmt.Errorf("failed to marshal payload: %w", err)
+	}
+
+	req, err := http.NewRequestWithContext(ctx, "POST", url, bytes.NewBuffer(jsonPayload))
+	if err != nil {
+		return "", fmt.Errorf("failed to create request: %w", err)
+	}
+
+	req.Header.Set("Content-Type", "application/json")
+
+	resp, err := c.HttpClient.Do(req)
+	if err != nil {
+		return "", fmt.Errorf("failed to send request: %w", err)
+	}
+	defer resp.Body.Close()
+
+	if resp.StatusCode != http.StatusOK {
+		return "", fmt.Errorf("unexpected status code: %d", resp.StatusCode)
+	}
+
+	var result map[string]interface{}
+	if err := json.NewDecoder(resp.Body).Decode(&result); err != nil {
+		return "", fmt.Errorf("failed to decode response: %w", err)
+	}
+
+	choices, ok := result["choices"].([]interface{})
+	if !ok || len(choices) == 0 {
+		return "", fmt.Errorf("invalid response format: missing or empty choices")
+	}
+
+	text, ok := choices[0].(map[string]interface{})["text"].(string)
+	if !ok {
+		return "", fmt.Errorf("invalid response format: missing or non-string text in first choice")
+	}
+
+	return text, nil
+}
+
+// GetEmbeddings returns embeddings for the given input.
+func (c *Client) GetEmbeddings(ctx context.Context, input string, opts *common.ChatOptions) ([]float64, error) {
+	url := fmt.Sprintf("%s/embeddings", c.ApiBaseURL.Value)
+
+	payload := map[string]interface{}{
+		"input": input,
+		"model": opts.Model,
+		// Add other options from opts if supported by LM Studio
+	}
+
+	jsonPayload, err := json.Marshal(payload)
+	if err != nil {
+		return nil, fmt.Errorf("failed to marshal payload: %w", err)
+	}
+
+	req, err := http.NewRequestWithContext(ctx, "POST", url, bytes.NewBuffer(jsonPayload))
+	if err != nil {
+		return nil, fmt.Errorf("failed to create request: %w", err)
+	}
+
+	req.Header.Set("Content-Type", "application/json")
+
+	resp, err := c.HttpClient.Do(req)
+	if err != nil {
+		return nil, fmt.Errorf("failed to send request: %w", err)
+	}
+	defer resp.Body.Close()
+
+	if resp.StatusCode != http.StatusOK {
+		return nil, fmt.Errorf("unexpected status code: %d", resp.StatusCode)
+	}
+
+	var result struct {
+		Data []struct {
+			Embedding []float64 `json:"embedding"`
+		} `json:"data"`
+	}
+
+	if err := json.NewDecoder(resp.Body).Decode(&result); err != nil {
+		return nil, fmt.Errorf("failed to decode response: %w", err)
+	}
+
+	if len(result.Data) == 0 {
+		return nil, fmt.Errorf("no embeddings returned")
+	}
+
+	return result.Data[0].Embedding, nil
+}
+
+// GetName returns the name of the vendor.
+func (c *Client) GetName() string {
+	return c.Name
+}
+
+// IsConfigured checks if the client is configured.
+func (c *Client) IsConfigured() bool {
+	return c.ApiBaseURL != nil && c.ApiBaseURL.Value != ""
+}
+
+// Setup performs any necessary setup for the client.
+func (c *Client) Setup() error {
+	return c.Configure()
+}
+
+// SetupFillEnvFileContent fills the environment file content.
+func (c *Client) SetupFillEnvFileContent(buffer *bytes.Buffer) {
+	envName := fmt.Sprintf("%s_API_BASE_URL", c.EnvNamePrefix)
+	buffer.WriteString(fmt.Sprintf("%s=%s\n", envName, c.ApiBaseURL.Value))
+}