v0.0.1: agentu mvp

Add OpenAI-compatible providers, TUI, slash commands, and model switching. Add local file tools plus optional yolo shell execution. Document config, usage, and development workflow.
2026-06-22 17:28:22 +08:00
commit a431d1ec95
23 changed files with 3526 additions and 0 deletions
@@ -0,0 +1,149 @@
+package llm
+
+import (
+	"bufio"
+	"bytes"
+	"context"
+	"encoding/json"
+	"errors"
+	"fmt"
+	"io"
+	"net/http"
+	"strings"
+)
+
+type OpenAICompatibleClient struct {
+	baseURL    string
+	apiKey     string
+	httpClient *http.Client
+}
+
+func NewOpenAICompatibleClient(baseURL, apiKey string, httpClient *http.Client) *OpenAICompatibleClient {
+	if httpClient == nil {
+		httpClient = http.DefaultClient
+	}
+	return &OpenAICompatibleClient{
+		baseURL:    strings.TrimRight(baseURL, "/"),
+		apiKey:     apiKey,
+		httpClient: httpClient,
+	}
+}
+
+func (c *OpenAICompatibleClient) ChatStream(ctx context.Context, req ChatRequest, emit func(StreamEvent) error) error {
+	req.Stream = true
+	body, err := json.Marshal(req)
+	if err != nil {
+		return fmt.Errorf("marshal chat request: %w", err)
+	}
+
+	httpReq, err := http.NewRequestWithContext(ctx, http.MethodPost, c.baseURL+"/v1/chat/completions", bytes.NewReader(body))
+	if err != nil {
+		return fmt.Errorf("create chat request: %w", err)
+	}
+	httpReq.Header.Set("Content-Type", "application/json")
+	httpReq.Header.Set("Accept", "text/event-stream")
+	if c.apiKey != "" {
+		httpReq.Header.Set("Authorization", "Bearer "+c.apiKey)
+	}
+
+	resp, err := c.httpClient.Do(httpReq)
+	if err != nil {
+		return fmt.Errorf("send chat request: %w", err)
+	}
+	defer resp.Body.Close()
+
+	if resp.StatusCode < 200 || resp.StatusCode >= 300 {
+		limit := io.LimitReader(resp.Body, 4096)
+		data, _ := io.ReadAll(limit)
+		return fmt.Errorf("chat request failed: status=%d body=%s", resp.StatusCode, strings.TrimSpace(string(data)))
+	}
+
+	return readSSE(resp.Body, emit)
+}
+
+func readSSE(r io.Reader, emit func(StreamEvent) error) error {
+	reader := bufio.NewReader(r)
+	for {
+		line, err := reader.ReadString('\n')
+		if err != nil && !errors.Is(err, io.EOF) {
+			return fmt.Errorf("read stream: %w", err)
+		}
+
+		line = strings.TrimSpace(line)
+		if strings.HasPrefix(line, "data:") {
+			payload := strings.TrimSpace(strings.TrimPrefix(line, "data:"))
+			if payload == "[DONE]" {
+				return nil
+			}
+			event, parseErr := parseStreamPayload(payload)
+			if parseErr != nil {
+				return parseErr
+			}
+			if event.Content != "" || len(event.ToolCalls) > 0 || event.FinishReason != "" {
+				if emitErr := emit(event); emitErr != nil {
+					return emitErr
+				}
+			}
+		}
+
+		if errors.Is(err, io.EOF) {
+			return nil
+		}
+	}
+}
+
+type streamPayload struct {
+	Choices []struct {
+		Delta struct {
+			Content   string              `json:"content"`
+			ToolCalls []toolCallDeltaJSON `json:"tool_calls"`
+		} `json:"delta"`
+		FinishReason string `json:"finish_reason"`
+	} `json:"choices"`
+	Error *struct {
+		Message string `json:"message"`
+		Type    string `json:"type"`
+	} `json:"error,omitempty"`
+}
+
+type toolCallDeltaJSON struct {
+	Index    int    `json:"index"`
+	ID       string `json:"id"`
+	Type     string `json:"type"`
+	Function struct {
+		Name      string `json:"name"`
+		Arguments string `json:"arguments"`
+	} `json:"function"`
+}
+
+func parseStreamPayload(payload string) (StreamEvent, error) {
+	var decoded streamPayload
+	if err := json.Unmarshal([]byte(payload), &decoded); err != nil {
+		return StreamEvent{}, fmt.Errorf("parse stream payload: %w", err)
+	}
+	if decoded.Error != nil {
+		if decoded.Error.Type != "" {
+			return StreamEvent{}, fmt.Errorf("provider error: %s: %s", decoded.Error.Type, decoded.Error.Message)
+		}
+		return StreamEvent{}, fmt.Errorf("provider error: %s", decoded.Error.Message)
+	}
+	if len(decoded.Choices) == 0 {
+		return StreamEvent{}, nil
+	}
+
+	choice := decoded.Choices[0]
+	event := StreamEvent{
+		Content:      choice.Delta.Content,
+		FinishReason: choice.FinishReason,
+	}
+	for _, tc := range choice.Delta.ToolCalls {
+		event.ToolCalls = append(event.ToolCalls, ToolCallDelta{
+			Index:     tc.Index,
+			ID:        tc.ID,
+			Type:      tc.Type,
+			Name:      tc.Function.Name,
+			Arguments: tc.Function.Arguments,
+		})
+	}
+	return event, nil
+}