Initial commit for ClawGo

pkg/tools/camera.go

@@ -0,0 +1,71 @@
+package tools
+
+import (
+	"context"
+	"fmt"
+	"os"
+	"os/exec"
+	"path/filepath"
+	"time"
+)
+
+type CameraTool struct {
+	workspace string
+}
+
+func NewCameraTool(workspace string) *CameraTool {
+	return &CameraTool{
+		workspace: workspace,
+	}
+}
+
+func (t *CameraTool) Name() string {
+	return "camera_snap"
+}
+
+func (t *CameraTool) Description() string {
+	return "Take a photo using the system camera (/dev/video0) and save to workspace."
+}
+
+func (t *CameraTool) Parameters() map[string]interface{} {
+	return map[string]interface{}{
+		"type": "object",
+		"properties": map[string]interface{}{
+			"filename": map[string]interface{}{
+				"type":        "string",
+				"description": "Optional filename (default: snap_TIMESTAMP.jpg)",
+			},
+		},
+	}
+}
+
+func (t *CameraTool) Execute(ctx context.Context, args map[string]interface{}) (string, error) {
+	filename := ""
+	if v, ok := args["filename"].(string); ok && v != "" {
+		filename = v
+	} else {
+		filename = fmt.Sprintf("snap_%d.jpg", time.Now().Unix())
+	}
+	
+	// Ensure filename is safe and within workspace
+	filename = filepath.Clean(filename)
+	if filepath.IsAbs(filename) {
+		return "", fmt.Errorf("filename must be relative to workspace")
+	}
+	
+	outputPath := filepath.Join(t.workspace, filename)
+
+	// Check if video device exists
+	if _, err := os.Stat("/dev/video0"); os.IsNotExist(err) {
+		return "", fmt.Errorf("camera device /dev/video0 not found")
+	}
+
+	// ffmpeg -y -f video4linux2 -i /dev/video0 -vframes 1 -q:v 2 output.jpg
+	cmd := exec.CommandContext(ctx, "ffmpeg", "-y", "-f", "video4linux2", "-i", "/dev/video0", "-vframes", "1", "-q:v", "2", outputPath)
+	output, err := cmd.CombinedOutput()
+	if err != nil {
+		return fmt.Sprintf("Error taking photo: %v\nOutput: %s", err, string(output)), nil
+	}
+
+	return fmt.Sprintf("Photo saved to %s", filename), nil
+}