Implement llama-server command parsing and add UI components for command input

pkg/backends/llamacpp/parser.go

@@ -0,0 +1,144 @@
+package llamacpp
+
+import (
+	"encoding/json"
+	"fmt"
+	"strconv"
+	"strings"
+)
+
+// ParseLlamaCommand parses a llama-server command string into LlamaServerOptions
+func ParseLlamaCommand(command string) (*LlamaServerOptions, error) {
+	// 1. Validate command starts with llama-server
+	trimmed := strings.TrimSpace(command)
+	if trimmed == "" {
+		return nil, fmt.Errorf("command cannot be empty")
+	}
+
+	// Check if command starts with llama-server (case-insensitive)
+	lowerCommand := strings.ToLower(trimmed)
+	if !strings.HasPrefix(lowerCommand, "llama-server") {
+		return nil, fmt.Errorf("command must start with 'llama-server'")
+	}
+
+	// 2. Extract arguments (everything after llama-server)
+	parts := strings.Fields(trimmed)
+	if len(parts) < 1 {
+		return nil, fmt.Errorf("invalid command format")
+	}
+
+	args := parts[1:] // Skip binary name
+
+	// 3. Parse arguments into map
+	options := make(map[string]any)
+	i := 0
+	for i < len(args) {
+		arg := args[i]
+
+		// Skip non-flag arguments
+		if !strings.HasPrefix(arg, "-") {
+			i++
+			continue
+		}
+
+		// Handle --flag=value format
+		if strings.Contains(arg, "=") {
+			parts := strings.SplitN(arg, "=", 2)
+			flag := strings.TrimPrefix(parts[0], "-")
+			flag = strings.TrimPrefix(flag, "-")
+
+			// Convert flag from kebab-case to snake_case for consistency with JSON field names
+			flagName := strings.ReplaceAll(flag, "-", "_")
+
+			// Convert value to appropriate type
+			value := parseValue(parts[1])
+
+			// Handle array flags by checking if flag already exists
+			if existingValue, exists := options[flagName]; exists {
+				// Convert to array if not already
+				switch existing := existingValue.(type) {
+				case []string:
+					options[flagName] = append(existing, parts[1])
+				case string:
+					options[flagName] = []string{existing, parts[1]}
+				default:
+					options[flagName] = []string{fmt.Sprintf("%v", existing), parts[1]}
+				}
+			} else {
+				options[flagName] = value
+			}
+			i++
+			continue
+		}
+
+		// Handle --flag value format
+		flag := strings.TrimPrefix(arg, "-")
+		flag = strings.TrimPrefix(flag, "-")
+
+		// Convert flag from kebab-case to snake_case for consistency with JSON field names
+		flagName := strings.ReplaceAll(flag, "-", "_")
+
+		// Check if next arg is a value (not a flag)
+		if i+1 < len(args) && !strings.HasPrefix(args[i+1], "-") {
+			value := parseValue(args[i+1])
+
+			// Handle array flags by checking if flag already exists
+			if existingValue, exists := options[flagName]; exists {
+				// Convert to array if not already
+				switch existing := existingValue.(type) {
+				case []string:
+					options[flagName] = append(existing, args[i+1])
+				case string:
+					options[flagName] = []string{existing, args[i+1]}
+				default:
+					options[flagName] = []string{fmt.Sprintf("%v", existing), args[i+1]}
+				}
+			} else {
+				options[flagName] = value
+			}
+			i += 2 // Skip flag and value
+		} else {
+			// Boolean flag
+			options[flagName] = true
+			i++
+		}
+	}
+
+	// 4. Convert to LlamaServerOptions using existing UnmarshalJSON
+	jsonData, err := json.Marshal(options)
+	if err != nil {
+		return nil, fmt.Errorf("failed to marshal parsed options: %w", err)
+	}
+
+	var llamaOptions LlamaServerOptions
+	if err := json.Unmarshal(jsonData, &llamaOptions); err != nil {
+		return nil, fmt.Errorf("failed to parse command options: %w", err)
+	}
+
+	// 5. Return LlamaServerOptions
+	return &llamaOptions, nil
+}
+
+// parseValue attempts to parse a string value into the most appropriate type
+func parseValue(value string) any {
+	// Try to parse as boolean
+	if strings.ToLower(value) == "true" {
+		return true
+	}
+	if strings.ToLower(value) == "false" {
+		return false
+	}
+
+	// Try to parse as integer
+	if intVal, err := strconv.Atoi(value); err == nil {
+		return intVal
+	}
+
+	// Try to parse as float
+	if floatVal, err := strconv.ParseFloat(value, 64); err == nil {
+		return floatVal
+	}
+
+	// Default to string
+	return value
+}

pkg/backends/llamacpp/parser_test.go

@@ -0,0 +1,169 @@
+package llamacpp
+
+import (
+	"testing"
+)
+
+func TestParseLlamaCommand(t *testing.T) {
+	tests := []struct {
+		name      string
+		command   string
+		expectErr bool
+	}{
+		{
+			name:      "basic command with model",
+			command:   "llama-server --model /path/to/model.gguf",
+			expectErr: false,
+		},
+		{
+			name:      "command with multiple flags",
+			command:   "llama-server --model /path/to/model.gguf --gpu-layers 32 --ctx-size 4096",
+			expectErr: false,
+		},
+		{
+			name:      "command with short flags",
+			command:   "llama-server -m /path/to/model.gguf -ngl 32 -c 4096",
+			expectErr: false,
+		},
+		{
+			name:      "command with equals format",
+			command:   "llama-server --model=/path/to/model.gguf --gpu-layers=32",
+			expectErr: false,
+		},
+		{
+			name:      "command with boolean flags",
+			command:   "llama-server --model /path/to/model.gguf --verbose --no-mmap",
+			expectErr: false,
+		},
+		{
+			name:      "empty command",
+			command:   "",
+			expectErr: true,
+		},
+		{
+			name:      "invalid command without llama-server",
+			command:   "other-command --model /path/to/model.gguf",
+			expectErr: true,
+		},
+		{
+			name:      "case insensitive command",
+			command:   "LLAMA-SERVER --model /path/to/model.gguf",
+			expectErr: false,
+		},
+	}
+
+	for _, tt := range tests {
+		t.Run(tt.name, func(t *testing.T) {
+			result, err := ParseLlamaCommand(tt.command)
+
+			if tt.expectErr {
+				if err == nil {
+					t.Errorf("expected error but got none")
+				}
+				return
+			}
+
+			if err != nil {
+				t.Errorf("unexpected error: %v", err)
+				return
+			}
+
+			if result == nil {
+				t.Errorf("expected result but got nil")
+				return
+			}
+		})
+	}
+}
+
+func TestParseLlamaCommandSpecificValues(t *testing.T) {
+	// Test specific value parsing
+	command := "llama-server --model /test/model.gguf --gpu-layers 32 --ctx-size 4096 --verbose"
+	result, err := ParseLlamaCommand(command)
+
+	if err != nil {
+		t.Fatalf("unexpected error: %v", err)
+	}
+
+	if result.Model != "/test/model.gguf" {
+		t.Errorf("expected model '/test/model.gguf', got '%s'", result.Model)
+	}
+
+	if result.GPULayers != 32 {
+		t.Errorf("expected gpu_layers 32, got %d", result.GPULayers)
+	}
+
+	if result.CtxSize != 4096 {
+		t.Errorf("expected ctx_size 4096, got %d", result.CtxSize)
+	}
+
+	if !result.Verbose {
+		t.Errorf("expected verbose to be true, got %v", result.Verbose)
+	}
+}
+
+func TestParseLlamaCommandArrayFlags(t *testing.T) {
+	// Test array flag handling (critical for lora, override-tensor, etc.)
+	command := "llama-server --model test.gguf --lora adapter1.bin --lora adapter2.bin"
+	result, err := ParseLlamaCommand(command)
+
+	if err != nil {
+		t.Fatalf("unexpected error: %v", err)
+	}
+
+	if len(result.Lora) != 2 {
+		t.Errorf("expected 2 lora adapters, got %d", len(result.Lora))
+	}
+
+	if result.Lora[0] != "adapter1.bin" || result.Lora[1] != "adapter2.bin" {
+		t.Errorf("expected lora adapters [adapter1.bin, adapter2.bin], got %v", result.Lora)
+	}
+}
+
+func TestParseLlamaCommandMixedFormats(t *testing.T) {
+	// Test mixing --flag=value and --flag value formats
+	command := "llama-server --model=/path/model.gguf --gpu-layers 16 --batch-size=512 --verbose"
+	result, err := ParseLlamaCommand(command)
+
+	if err != nil {
+		t.Fatalf("unexpected error: %v", err)
+	}
+
+	if result.Model != "/path/model.gguf" {
+		t.Errorf("expected model '/path/model.gguf', got '%s'", result.Model)
+	}
+
+	if result.GPULayers != 16 {
+		t.Errorf("expected gpu_layers 16, got %d", result.GPULayers)
+	}
+
+	if result.BatchSize != 512 {
+		t.Errorf("expected batch_size 512, got %d", result.BatchSize)
+	}
+
+	if !result.Verbose {
+		t.Errorf("expected verbose to be true, got %v", result.Verbose)
+	}
+}
+
+func TestParseLlamaCommandTypeConversion(t *testing.T) {
+	// Test that values are converted to appropriate types
+	command := "llama-server --model test.gguf --temp 0.7 --top-k 40 --no-mmap"
+	result, err := ParseLlamaCommand(command)
+
+	if err != nil {
+		t.Fatalf("unexpected error: %v", err)
+	}
+
+	if result.Temperature != 0.7 {
+		t.Errorf("expected temperature 0.7, got %f", result.Temperature)
+	}
+
+	if result.TopK != 40 {
+		t.Errorf("expected top_k 40, got %d", result.TopK)
+	}
+
+	if !result.NoMmap {
+		t.Errorf("expected no_mmap to be true, got %v", result.NoMmap)
+	}
+}

pkg/server/handlers.go

@@ -5,6 +5,8 @@ import (
 	"encoding/json"
 	"fmt"
 	"io"
+	"llamactl/pkg/backends"
+	"llamactl/pkg/backends/llamacpp"
 	"llamactl/pkg/config"
 	"llamactl/pkg/instance"
 	"llamactl/pkg/manager"
@@ -629,3 +631,53 @@ func (h *Handler) OpenAIProxy() http.HandlerFunc {
 		proxy.ServeHTTP(w, r)
 	}
 }
+
+// ParseCommandRequest represents the request body for command parsing
+type ParseCommandRequest struct {
+	Command string `json:"command"`
+}
+
+// ParseLlamaCommand godoc
+// @Summary Parse llama-server command
+// @Description Parses a llama-server command string into instance options
+// @Tags backends
+// @Security ApiKeyAuth
+// @Accept json
+// @Produce json
+// @Param request body ParseCommandRequest true "Command to parse"
+// @Success 200 {object} instance.CreateInstanceOptions "Parsed options"
+// @Failure 400 {string} string "Invalid request or command"
+// @Failure 500 {string} string "Internal Server Error"
+// @Router /backends/llama-cpp/parse-command [post]
+func (h *Handler) ParseLlamaCommand() http.HandlerFunc {
+	return func(w http.ResponseWriter, r *http.Request) {
+		var req ParseCommandRequest
+		if err := json.NewDecoder(r.Body).Decode(&req); err != nil {
+			http.Error(w, "Invalid request body", http.StatusBadRequest)
+			return
+		}
+
+		if req.Command == "" {
+			http.Error(w, "Command cannot be empty", http.StatusBadRequest)
+			return
+		}
+
+		// Parse the command using llamacpp parser
+		llamaOptions, err := llamacpp.ParseLlamaCommand(req.Command)
+		if err != nil {
+			http.Error(w, "Failed to parse command: "+err.Error(), http.StatusBadRequest)
+			return
+		}
+
+		// Create the full CreateInstanceOptions
+		options := &instance.CreateInstanceOptions{
+			BackendType:        backends.BackendTypeLlamaCpp,
+			LlamaServerOptions: llamaOptions,
+		}
+
+		w.Header().Set("Content-Type", "application/json")
+		if err := json.NewEncoder(w).Encode(options); err != nil {
+			http.Error(w, "Failed to encode response", http.StatusInternalServerError)
+		}
+	}
+}

pkg/server/routes.go

@@ -50,6 +50,13 @@ func SetupRouter(handler *Handler) *chi.Mux {
 			r.Get("/devices", handler.LlamaServerListDevicesHandler())
 		})
 
+		// Backend-specific endpoints
+		r.Route("/backends", func(r chi.Router) {
+			r.Route("/llama-cpp", func(r chi.Router) {
+				r.Post("/parse-command", handler.ParseLlamaCommand())
+			})
+		})
+
 		// Instance management endpoints
 		r.Route("/instances", func(r chi.Router) {
 			r.Get("/", handler.ListInstances()) // List all instances

webui/package-lock.json

@@ -19,6 +19,7 @@
         "lucide-react": "^0.525.0",
         "react": "^19.1.0",
         "react-dom": "^19.1.0",
+        "sonner": "^2.0.7",
         "tailwind-merge": "^3.3.1",
         "tailwindcss": "^4.1.11",
         "zod": "^4.0.5"
@@ -6750,6 +6751,16 @@
         "node": ">=18"
       }
     },
+    "node_modules/sonner": {
+      "version": "2.0.7",
+      "resolved": "https://registry.npmjs.org/sonner/-/sonner-2.0.7.tgz",
+      "integrity": "sha512-W6ZN4p58k8aDKA4XPcx2hpIQXBRAgyiWVkYhT7CvK6D3iAu7xjvVyhQHg2/iaKJZ1XVJ4r7XuwGL+WGEK37i9w==",
+      "license": "MIT",
+      "peerDependencies": {
+        "react": "^18.0.0 || ^19.0.0 || ^19.0.0-rc",
+        "react-dom": "^18.0.0 || ^19.0.0 || ^19.0.0-rc"
+      }
+    },
     "node_modules/source-map-js": {
       "version": "1.2.1",
       "resolved": "https://registry.npmjs.org/source-map-js/-/source-map-js-1.2.1.tgz",

webui/package.json

@@ -28,6 +28,7 @@
     "lucide-react": "^0.525.0",
     "react": "^19.1.0",
     "react-dom": "^19.1.0",
+    "sonner": "^2.0.7",
     "tailwind-merge": "^3.3.1",
     "tailwindcss": "^4.1.11",
     "zod": "^4.0.5"

webui/src/App.tsx

@@ -8,6 +8,7 @@ import { type CreateInstanceOptions, type Instance } from "@/types/instance";
 import { useInstances } from "@/contexts/InstancesContext";
 import { useAuth } from "@/contexts/AuthContext";
 import { ThemeProvider } from "@/contexts/ThemeContext";
+import { Toaster } from "sonner";
 
 function App() {
   const { isAuthenticated, isLoading: authLoading } = useAuth();
@@ -85,6 +86,8 @@ function App() {
           open={isSystemInfoModalOpen}
           onOpenChange={setIsSystemInfoModalOpen}
         />
+        
+        <Toaster />
       </div>
     </ThemeProvider>
   );

webui/src/components/InstanceDialog.tsx

@@ -12,9 +12,10 @@ import {
 } from "@/components/ui/dialog";
 import { BackendType, type CreateInstanceOptions, type Instance } from "@/types/instance";
 import { getBasicFields, getAdvancedFields, getBasicBackendFields, getAdvancedBackendFields } from "@/lib/zodFormUtils";
-import { ChevronDown, ChevronRight } from "lucide-react";
+import { ChevronDown, ChevronRight, Terminal } from "lucide-react";
 import ZodFormField from "@/components/ZodFormField";
 import BackendFormField from "@/components/BackendFormField";
+import ParseCommandDialog from "@/components/ParseCommandDialog";
 
 interface InstanceDialogProps {
   open: boolean;
@@ -35,6 +36,7 @@ const InstanceDialog: React.FC<InstanceDialogProps> = ({
   const [formData, setFormData] = useState<CreateInstanceOptions>({});
   const [showAdvanced, setShowAdvanced] = useState(false);
   const [nameError, setNameError] = useState("");
+  const [showParseDialog, setShowParseDialog] = useState(false);
 
   // Get field lists dynamically from the type
   const basicFields = getBasicFields();
@@ -142,6 +144,14 @@ const InstanceDialog: React.FC<InstanceDialogProps> = ({
     setShowAdvanced(!showAdvanced);
   };
 
+  const handleCommandParsed = (parsedOptions: CreateInstanceOptions) => {
+    setFormData(prev => ({
+      ...prev,
+      ...parsedOptions,
+    }));
+    setShowParseDialog(false);
+  };
+
   // Check if auto_restart is enabled
   const isAutoRestartEnabled = formData.auto_restart === true;
 
@@ -258,6 +268,16 @@ const InstanceDialog: React.FC<InstanceDialogProps> = ({
 
             {/* Advanced Fields Toggle */}
             <div className="border-t pt-4">
+              <div className="flex items-center justify-between">
+                <Button
+                  variant="outline"
+                  onClick={() => setShowParseDialog(true)}
+                  className="flex items-center gap-2"
+                >
+                  <Terminal className="h-4 w-4" />
+                  Parse Command
+                </Button>
+                
                 <Button
                   variant="ghost"
                   onClick={toggleAdvanced}
@@ -281,6 +301,7 @@ const InstanceDialog: React.FC<InstanceDialogProps> = ({
                   </span>
                 </Button>
               </div>
+            </div>
 
             {/* Advanced Fields - Automatically generated from type (excluding restart options) */}
             {showAdvanced && (
@@ -352,6 +373,12 @@ const InstanceDialog: React.FC<InstanceDialogProps> = ({
           </Button>
         </DialogFooter>
       </DialogContent>
+      
+      <ParseCommandDialog
+        open={showParseDialog}
+        onOpenChange={setShowParseDialog}
+        onParsed={handleCommandParsed}
+      />
     </Dialog>
   );
 };

webui/src/components/ParseCommandDialog.tsx

@@ -0,0 +1,117 @@
+import React, { useState } from "react";
+import { Button } from "@/components/ui/button";
+import { Label } from "@/components/ui/label";
+import {
+  Dialog,
+  DialogContent,
+  DialogDescription,
+  DialogFooter,
+  DialogHeader,
+  DialogTitle,
+} from "@/components/ui/dialog";
+import { type CreateInstanceOptions } from "@/types/instance";
+import { backendsApi } from "@/lib/api";
+import { toast } from "sonner";
+
+interface ParseCommandDialogProps {
+  open: boolean;
+  onOpenChange: (open: boolean) => void;
+  onParsed: (options: CreateInstanceOptions) => void;
+}
+
+const ParseCommandDialog: React.FC<ParseCommandDialogProps> = ({
+  open,
+  onOpenChange,
+  onParsed,
+}) => {
+  const [command, setCommand] = useState('');
+  const [loading, setLoading] = useState(false);
+  const [error, setError] = useState<string | null>(null);
+
+  const handleParse = async () => {
+    if (!command.trim()) {
+      setError("Command cannot be empty");
+      return;
+    }
+
+    setLoading(true);
+    setError(null);
+
+    try {
+      const options = await backendsApi.llamaCpp.parseCommand(command);
+      onParsed(options);
+      onOpenChange(false);
+      // Reset form
+      setCommand('');
+      setError(null);
+      // Show success toast
+      toast.success('Command parsed successfully');
+    } catch (err) {
+      const errorMessage = err instanceof Error ? err.message : 'Failed to parse command';
+      setError(errorMessage);
+      // Show error toast
+      toast.error('Failed to parse command', {
+        description: errorMessage
+      });
+    } finally {
+      setLoading(false);
+    }
+  };
+
+  const handleOpenChange = (open: boolean) => {
+    if (!open) {
+      // Reset form when closing
+      setCommand('');
+      setError(null);
+    }
+    onOpenChange(open);
+  };
+
+  return (
+    <Dialog open={open} onOpenChange={handleOpenChange}>
+      <DialogContent className="sm:max-w-[600px]">
+        <DialogHeader>
+          <DialogTitle>Parse Llama Server Command</DialogTitle>
+          <DialogDescription>
+            Paste your llama-server command to automatically populate the form fields
+          </DialogDescription>
+        </DialogHeader>
+        
+        <div className="space-y-4">
+          <div>
+            <Label htmlFor="command">Command</Label>
+            <textarea
+              id="command"
+              value={command}
+              onChange={(e) => setCommand(e.target.value)}
+              placeholder="llama-server --model /path/to/model.gguf --gpu-layers 32 --ctx-size 4096"
+              className="w-full h-32 p-3 border border-input rounded-md font-mono text-sm resize-vertical focus:outline-none focus:ring-2 focus:ring-ring focus:ring-offset-2"
+            />
+          </div>
+          
+          {error && (
+            <div className="text-destructive text-sm bg-destructive/10 p-3 rounded-md">
+              {error}
+            </div>
+          )}
+        </div>
+
+        <DialogFooter>
+          <Button variant="outline" onClick={() => handleOpenChange(false)}>
+            Cancel
+          </Button>
+          <Button 
+            onClick={() => {
+              handleParse().catch(console.error);
+            }}
+            disabled={!command.trim() || loading}
+          >
+            {loading ? 'Parsing...' : 'Parse Command'}
+          </Button>
+        </DialogFooter>
+      </DialogContent>
+    </Dialog>
+  );
+};
+
+export default ParseCommandDialog;

webui/src/lib/api.ts

@@ -83,6 +83,18 @@ export const serverApi = {
   getDevices: () => apiCall<string>("/server/devices", {}, "text"),
 };
 
+// Backend API functions
+export const backendsApi = {
+  llamaCpp: {
+    // POST /backends/llama-cpp/parse-command
+    parseCommand: (command: string) =>
+      apiCall<CreateInstanceOptions>('/backends/llama-cpp/parse-command', {
+        method: 'POST',
+        body: JSON.stringify({ command }),
+      }),
+  },
+};
+
 // Instance API functions
 export const instancesApi = {
   // GET /instances