Merge pull request 'Merge dev into master' (#1) from dev into master

Reviewed-on: #1

.gitignore

@@ -2,3 +2,5 @@
 .direnv
 .cache
 .vscode
+vssm
+test/

README.md

@@ -24,26 +24,40 @@ Setup is easy from source, all you need is:
 ## Configuration
 **For now, the configuration file is stored in `~/.config/vssm/config.json`, but this will be configurable later.**
 
-
+## Web Interface
+Alongside this project, I am developing a seperate web-based dashboard that can be used to manage you servers with a very simple UI. You can get it [here](https://git.bellsworne.tech/chrisbell/vssm_web).
 
 ## Roadmap
 
-- [-] Configuration
-    - [x] Application data path
-    - [x] Declarative Servers
+- [ ] Configuration
+    - [x] Custom configuration path (passed to the daemon with a flag `--config`)
+        - [x] Daemon instance remembers config path (*so you don't have to pass `--config` everytime you run an ipc command*)
+    - [ ] Daemon listen port (kind of implemented, could be cleaner)
+    - [x] Declarative Server configuration (Create servers in config)
+        - [x] All configuration options
 
-- [-] Server management
+- [ ] Server management
     - [x] Create servers
+        - [x] Automatic server binary downloading by version
+    - [x] Delete servers
     - [x] Start/Stop servers
+    - [x] Server configuration
+        - [x] Download correct configuration template for version (see availible templates [here](https://git.bellsworne.tech/chrisbell/vssm_config_templates))
+        - [x] Version
+        - [x] Server Name
+        - [x] Port
+        - [x] Full declarative configuration support in main app config
     - [x] Multiple servers support
     - [x] List servers and their status
-    - [ ] Delete servers
+    - [x] Send commands to servers
     - [ ] Automated server backups
 
 - [ ] Binary releases
 
-- [-] Other
-    - [-] First class NixOS support
+- [ ] Automatically set up background service
+
+- [ ] Other
+    - [ ] First class NixOS support
         - [x] Patch downloaded server binaries for NixOS
         - [ ] Official nix package or flake
             - [ ] All configuration options

config.go

@@ -9,6 +9,7 @@ import (
 
 type AppConfig struct {
 	Storage struct {
+		AppDataDir         string `json:"app_data_dir"`
 		InstallDir         string `json:"install_dir"`
 		InstancesDir       string `json:"instances_dir"`
 		BackupDir          string `json:"backup_dir"`
@@ -16,16 +17,15 @@ type AppConfig struct {
 	} `json:"storage"`
 
 	Daemon struct {
-		// UseNixOs      bool   `json:"use_nixos"`
 		ListenAddress string `json:"listen_address"`
-	}
+		Port          int    `json:"port"`
+	} `json:"daemon"`
 
-	Instances map[string]VsServerConfigOptions `json:"instances"`
+	Instances map[string]InstanceMetadata `json:"instances"`
 }
 
-func DefaultConfig() *AppConfig {
-	home, _ := os.UserHomeDir()
-	basePath := filepath.Join(home, ".local", "share", "vssm")
+func CreateConfigWithDefaults(configPath string) *AppConfig {
+	basePath := filepath.Join(filepath.Dir(configPath), "vssm_data")
 
 	cfg := &AppConfig{}
 	cfg.Storage.InstallDir = filepath.Join(basePath, "installs")
@@ -33,16 +33,17 @@ func DefaultConfig() *AppConfig {
 	cfg.Storage.BackupDir = filepath.Join(basePath, "backups")
 	cfg.Storage.ConfigTemplatesDir = filepath.Join(basePath, "config_templates")
 
-	cfg.Daemon.ListenAddress = "127.0.0.1:12345"
+	cfg.Daemon.ListenAddress = "127.0.0.1"
+	cfg.Daemon.Port = 65000
 
-	cfg.Instances = make(map[string]VsServerConfigOptions)
+	cfg.Instances = make(map[string]InstanceMetadata)
 
 	return cfg
 }
 
 func LoadOrCreateConfig(configPath string) (*AppConfig, error) {
 	if _, err := os.Stat(configPath); os.IsNotExist(err) {
-		cfg := DefaultConfig()
+		cfg := CreateConfigWithDefaults(configPath)
 
 		if err := os.MkdirAll(filepath.Dir(configPath), 0755); err != nil {
 			return nil, fmt.Errorf("Failed to create config directory: %w", err)

daemon.go

@@ -7,6 +7,7 @@ import (
 	"os"
 	"os/signal"
 	"path/filepath"
+	"strconv"
 	"sync"
 	"syscall"
 	"time"
@@ -24,13 +25,16 @@ type InstanceStatusResponse struct {
 }
 
 type DaemonServer struct {
+	sync.RWMutex
 	cfg         *AppConfig
+	configPath  string
 	procManager *ProcessManager
 }
 
-func StartDaemon(cfg *AppConfig) error {
+func StartDaemon(cfg *AppConfig, configPath string) error {
 	ds := &DaemonServer{
 		cfg:         cfg,
+		configPath:  configPath,
 		procManager: NewProcessManager(),
 	}
 
@@ -40,6 +44,8 @@ func StartDaemon(cfg *AppConfig) error {
 	mux.HandleFunc("/instances/stop", ds.handleStop)
 	mux.HandleFunc("/instances/command", ds.handleCommand)
 	mux.HandleFunc("/instances/list", ds.handleList)
+	mux.HandleFunc("/instances/logs", ds.handleGetLogs)
+	mux.HandleFunc("/instances/delete", ds.handleDelete)
 
 	corsWrappedHandler := http.HandlerFunc(func(w http.ResponseWriter, r *http.Request) {
 		w.Header().Set("Access-Control-Allow-Origin", "*")
@@ -54,8 +60,10 @@ func StartDaemon(cfg *AppConfig) error {
 		mux.ServeHTTP(w, r)
 	})
 
+	listenAddress := cfg.Daemon.ListenAddress + ":" + strconv.Itoa(cfg.Daemon.Port)
+
 	server := &http.Server{
-		Addr:    cfg.Daemon.ListenAddress,
+		Addr:    listenAddress,
 		Handler: corsWrappedHandler,
 	}
 
@@ -63,7 +71,7 @@ func StartDaemon(cfg *AppConfig) error {
 	signal.Notify(sigChan, os.Interrupt, syscall.SIGTERM)
 
 	go func() {
-		fmt.Printf("Engine daemon actively listening on http://%s\n", cfg.Daemon.ListenAddress)
+		fmt.Printf("Engine daemon actively listening on http://%s\n", listenAddress)
 		if err := server.ListenAndServe(); err != http.ErrServerClosed {
 			fmt.Printf("Daemon runtime failure: %v\n", err)
 		}
@@ -79,6 +87,19 @@ func StartDaemon(cfg *AppConfig) error {
 	return nil
 }
 
+func (ds *DaemonServer) reloadConfig() error {
+	cfg, err := LoadOrCreateConfig(ds.configPath)
+	if err != nil {
+		fmt.Printf("Could not reload configuration file: %v\n", err)
+		return err
+	}
+
+	ds.Lock()
+	defer ds.Unlock()
+	ds.cfg = cfg
+	return nil
+}
+
 func (ds *DaemonServer) shutdownAllRunningServers() {
 	ds.procManager.Lock()
 
@@ -142,47 +163,75 @@ func (ds *DaemonServer) handleCreate(w http.ResponseWriter, r *http.Request) {
 
 	name := r.URL.Query().Get("name")
 	version := r.URL.Query().Get("version")
-	if name == "" || version == "" {
-		http.Error(w, "Missing name or version parameters", http.StatusBadRequest)
+	port := r.URL.Query().Get("port")
+	if name == "" || version == "" || port == "" {
+		http.Error(w, "Missing name, version, or port parameters", http.StatusBadRequest)
 		return
 	}
 
+	converted_port, err := strconv.Atoi(port)
+	if err != nil {
+		http.Error(w, "Could not convert provided port to a valid port number", http.StatusBadRequest)
+		return
+	}
+
+	if ds.reloadConfig() != nil {
+		http.Error(w, "Could not reload config", http.StatusInternalServerError)
+		return
+	}
+
+	ds.Lock()
+	defer ds.Unlock()
+
 	if _, exists := ds.cfg.Instances[name]; exists {
 		http.Error(w, fmt.Sprintf("Instance '%s' already exists in configuration", name), http.StatusConflict)
 		return
 	}
 
-	options := VsServerConfigOptions{
-		Version:    version,
-		ServerName: name,
-		Port:       42424,
-		MaxClients: 10,
+	for name, options := range ds.cfg.Instances {
+		if options.Port == converted_port {
+			http.Error(w, fmt.Sprintf("Port already occupied by instance '%s'", name), http.StatusConflict)
+			return
+		}
 	}
 
-	err := DownloadAndExtractServer(version, ds.cfg.Storage.InstallDir)
+	metadata := InstanceMetadata{
+		Version:    version,
+		ServerName: name,
+		Port:       converted_port,
+	}
+
+	err = DownloadAndExtractServer(version, ds.cfg.Storage.InstallDir)
 	if err != nil {
 		http.Error(w, fmt.Sprintf("Installation failed: %v", err), http.StatusInternalServerError)
 		return
 	}
 
-	err = CreateNewInstance(name, version, options, ds.cfg)
+	err = CreateNewInstance(name, version, metadata, ds.cfg)
 	if err != nil {
 		http.Error(w, fmt.Sprintf("Instance provisioning failed: %v", err), http.StatusInternalServerError)
 		return
 	}
 
-	ds.cfg.Instances[name] = options
+	ds.cfg.Instances[name] = metadata
 
-	home, _ := os.UserHomeDir()
-	configPath := filepath.Join(home, ".config", "vs-manager", "config.json")
-	data, _ := json.MarshalIndent(ds.cfg, "", "  ")
-	_ = os.WriteFile(configPath, data, 0644)
+	data, err := json.MarshalIndent(ds.cfg, "", "  ")
+	if err != nil {
+		http.Error(w, fmt.Sprintf("Failed processing profile adjustments: %v", err), http.StatusInternalServerError)
+		return
+	}
+
+	if err := os.WriteFile(ds.configPath, data, 0644); err != nil {
+		http.Error(w, fmt.Sprintf("Failed saving configuration adjustments to disk: %v", err), http.StatusInternalServerError)
+		return
+	}
 
 	w.WriteHeader(http.StatusCreated)
 	fmt.Fprintf(w, "Successfully created and stored profile for instance %s", name)
 }
 
 func (ds *DaemonServer) handleStart(w http.ResponseWriter, r *http.Request) {
+
 	if r.Method != http.MethodPost {
 		http.Error(w, "Method not allowed", http.StatusMethodNotAllowed)
 		return
@@ -194,6 +243,14 @@ func (ds *DaemonServer) handleStart(w http.ResponseWriter, r *http.Request) {
 		return
 	}
 
+	if ds.reloadConfig() != nil {
+		http.Error(w, "Could not reload config", http.StatusInternalServerError)
+		return
+	}
+
+	ds.RLock()
+	defer ds.RUnlock()
+
 	options, exists := ds.cfg.Instances[name]
 	if !exists {
 		http.Error(w, fmt.Sprintf("Instance '%s' does not exist. Run 'create' first", name), http.StatusNotFound)
@@ -273,6 +330,14 @@ func (ds *DaemonServer) handleList(w http.ResponseWriter, r *http.Request) {
 		return
 	}
 
+	if ds.reloadConfig() != nil {
+		http.Error(w, "Could not reload config", http.StatusInternalServerError)
+		return
+	}
+
+	ds.RLock()
+	defer ds.RUnlock()
+
 	ds.procManager.RLock()
 	defer ds.procManager.RUnlock()
 
@@ -296,3 +361,105 @@ func (ds *DaemonServer) handleList(w http.ResponseWriter, r *http.Request) {
 	w.WriteHeader(http.StatusOK)
 	json.NewEncoder(w).Encode(responseList)
 }
+
+func (ds *DaemonServer) handleGetLogs(w http.ResponseWriter, r *http.Request) {
+	if r.Method != http.MethodGet {
+		http.Error(w, "Method not allowed", http.StatusMethodNotAllowed)
+		return
+	}
+
+	name := r.URL.Query().Get("name")
+	if name == "" {
+		http.Error(w, "Missing name parameter", http.StatusBadRequest)
+		return
+	}
+
+	ds.procManager.RLock()
+	buf, exists := ds.procManager.LogBuffers[name]
+	ds.procManager.RUnlock()
+
+	if !exists || buf == nil {
+		w.Header().Set("Content-Type", "application/json")
+		w.Write([]byte("[]"))
+		return
+	}
+
+	logLines := buf.GetSnapshot()
+
+	w.Header().Set("Content-Type", "application/json")
+	if err := json.NewEncoder(w).Encode(logLines); err != nil {
+		http.Error(w, fmt.Sprintf("Failed encoding log matrix: %v", err), http.StatusInternalServerError)
+	}
+}
+
+func (ds *DaemonServer) handleDelete(w http.ResponseWriter, r *http.Request) {
+	if r.Method != http.MethodPost {
+		http.Error(w, "Method not allowed", http.StatusMethodNotAllowed)
+		return
+	}
+
+	name := r.URL.Query().Get("name")
+	if name == "" {
+		http.Error(w, "Missing name parameter", http.StatusBadRequest)
+		return
+	}
+
+	purge := false
+	purgeParam := r.URL.Query().Get("purge")
+	if purgeParam != "" {
+		result, err := strconv.ParseBool(purgeParam)
+		if err != nil {
+			http.Error(w, "Invalid value for 'purge' parameter", http.StatusBadRequest)
+			return
+		}
+		purge = result
+	}
+
+	if ds.reloadConfig() != nil {
+		http.Error(w, "Could not reload config", http.StatusInternalServerError)
+		return
+	}
+
+	ds.Lock()
+	defer ds.Unlock()
+
+	ds.procManager.RLock()
+	defer ds.procManager.RUnlock()
+
+	_, exists := ds.cfg.Instances[name]
+	if !exists {
+		http.Error(w, fmt.Sprintf("Cannot delete instance '%s'; Does not exist.", name), http.StatusBadRequest)
+		return
+	}
+
+	if _, running := ds.procManager.ActiveInstances[name]; running {
+		http.Error(w, fmt.Sprintf("Cannot delete instance '%s'; It is currently running.", name), http.StatusBadRequest)
+		return
+	}
+
+	delete(ds.cfg.Instances, name)
+
+	data, err := json.MarshalIndent(ds.cfg, "", "  ")
+	if err != nil {
+		http.Error(w, fmt.Sprintf("Failed processing profile adjustments: %v", err), http.StatusInternalServerError)
+		return
+	}
+
+	if err := os.WriteFile(ds.configPath, data, 0644); err != nil {
+		http.Error(w, fmt.Sprintf("Failed saving configuration adjustments to disk: %v", err), http.StatusInternalServerError)
+		return
+	}
+
+	if purge {
+		path := filepath.Join(ds.cfg.Storage.InstancesDir, name)
+		err := os.RemoveAll(path)
+		if err != nil {
+			http.Error(w, fmt.Sprintf("Failed to delete instance from disk: %v", err), http.StatusInternalServerError)
+			return
+		}
+	}
+
+	w.WriteHeader(http.StatusOK)
+	fmt.Fprintf(w, "Successfully deleted instance %s", name)
+
+}

instance.go

@@ -3,7 +3,6 @@ package main
 import (
 	"fmt"
 	"os"
-	"os/exec"
 	"path/filepath"
 )
 
@@ -14,17 +13,7 @@ const (
 	StateRunning InstanceState = "RUNNING"
 )
 
-type ManagedInstance struct {
-	Name    string        `json:"name"`
-	Version string        `json:"version"`
-	Port    int           `json:"port"`
-	Status  InstanceState `json:"status"`
-
-	Cmd   *exec.Cmd   `json:"-"`
-	Stdin interface{} `json:"-"`
-}
-
-func CreateNewInstance(name string, version string, options VsServerConfigOptions, cfg *AppConfig) error {
+func CreateNewInstance(name string, version string, meta InstanceMetadata, cfg *AppConfig) error {
 	instanceDir := filepath.Join(cfg.Storage.InstancesDir, name)
 
 	dirs := []string{
@@ -40,7 +29,7 @@ func CreateNewInstance(name string, version string, options VsServerConfigOption
 	}
 
 	instanceConfigPath := filepath.Join(instanceDir, "serverconfig.json")
-	if err := PrepareInstanceConfig(version, instanceConfigPath, options, cfg); err != nil {
+	if err := PrepareInstanceConfig(version, instanceConfigPath, meta, cfg); err != nil {
 		return fmt.Errorf("Failed provisioning server baseline configuration: %w", err)
 	}
 

instance_config.go

@@ -4,30 +4,30 @@ import (
 	"encoding/json"
 	"fmt"
 	"io"
+	"net/http"
 	"os"
 	"path/filepath"
 	"strings"
 )
 
-type VsServerConfigOptions struct {
+type InstanceMetadata struct {
 	Version    string                 `json:"Version"`
 	ServerName string                 `json:"ServerName"`
 	Port       int                    `json:"Port"`
-	IpAddress       string `json:"IpAddress"`
-	MaxClients      int    `json:"MaxClients"`
-	Password        string `json:"Password"`
-	DefaultRole     string `json:"DefaultRole"`
-	GuestRole       string `json:"GuestRole"`
-	PreApprovedRole string `json:"PreApprovedRole"`
+	Config     map[string]interface{} `json:"config"`
 }
 
-func PrepareInstanceConfig(templateVersion string, instanceConfigPath string, options VsServerConfigOptions, cfg *AppConfig) error {
-	return SyncInstanceConfig(templateVersion, instanceConfigPath, options, cfg)
+func PrepareInstanceConfig(templateVersion string, instanceConfigPath string, meta InstanceMetadata, cfg *AppConfig) error {
+	return SyncInstanceConfig(templateVersion, instanceConfigPath, meta, cfg)
 }
 
-func SyncInstanceConfig(templateVersion string, instanceConfigPath string, options VsServerConfigOptions, cfg *AppConfig) error {
+func SyncInstanceConfig(templateVersion string, instanceConfigPath string, meta InstanceMetadata, cfg *AppConfig) error {
 	templatePath := filepath.Join(cfg.Storage.ConfigTemplatesDir, templateVersion, "serverconfig.json")
 
+	if err := ensureTemplateExists(templateVersion, templatePath, cfg); err != nil {
+		return fmt.Errorf("failed ensuring configuration template availability: %w", err)
+	}
+
 	if _, err := os.Stat(instanceConfigPath); os.IsNotExist(err) {
 		if err := os.MkdirAll(filepath.Dir(instanceConfigPath), 0755); err != nil {
 			return fmt.Errorf("failed creating instance directory tree: %w", err)
@@ -61,16 +61,13 @@ func SyncInstanceConfig(templateVersion string, instanceConfigPath string, optio
 		return fmt.Errorf("failed parsing configuration JSON payload: %w", err)
 	}
 
-	rawConfig["ServerName"] = options.ServerName
-	rawConfig["Port"] = options.Port
-	rawConfig["MaxClients"] = options.MaxClients
-
-	if options.Password != "" {
-		rawConfig["Password"] = options.Password
-	} else {
-		rawConfig["Password"] = nil
+	for key, value := range meta.Config {
+		rawConfig[key] = value
 	}
 
+	rawConfig["ServerName"] = meta.ServerName
+	rawConfig["Port"] = meta.Port
+
 	instanceDir := filepath.Dir(instanceConfigPath)
 	if worldConfig, ok := rawConfig["WorldConfig"].(map[string]interface{}); ok {
 		worldConfig["SaveFileLocation"] = filepath.Join(instanceDir, "Saves", "default.vcdbs")
@@ -91,3 +88,43 @@ func SyncInstanceConfig(templateVersion string, instanceConfigPath string, optio
 
 	return os.WriteFile(instanceConfigPath, updatedData, 0644)
 }
+
+func ensureTemplateExists(version string, targetPath string, cfg *AppConfig) error {
+	if _, err := os.Stat(targetPath); err == nil {
+		return nil
+	}
+
+	fmt.Printf("Template for version %s not found locally. Fetching remote layout from git server...\n", version)
+
+	if err := os.MkdirAll(filepath.Dir(targetPath), 0755); err != nil {
+		return fmt.Errorf("failed to create local template cache directory: %w", err)
+	}
+
+	remoteURL := fmt.Sprintf("https://git.bellsworne.tech/chrisbell/vssm_config_templates/raw/branch/main/%s/serverconfig.json", version)
+
+	resp, err := http.Get(remoteURL)
+	if err != nil {
+		return fmt.Errorf("network error attempting to pull config template: %w", err)
+	}
+	defer resp.Body.Close()
+
+	if resp.StatusCode == http.StatusNotFound {
+		return fmt.Errorf("version template '%s' does not exist in the remote git repository asset tree", version)
+	} else if resp.StatusCode != http.StatusOK {
+		return fmt.Errorf("remote git mirror returned unexpected HTTP status: %s", resp.Status)
+	}
+
+	out, err := os.Create(targetPath)
+	if err != nil {
+		return fmt.Errorf("failed creating cache file hook on system storage: %w", err)
+	}
+	defer out.Close()
+
+	_, err = io.Copy(out, resp.Body)
+	if err != nil {
+		return fmt.Errorf("failed stream-writing network payload cache frame to disk: %w", err)
+	}
+
+	fmt.Printf("Successfully cached configuration layout template for version %s\n", version)
+	return nil
+}

main.go

@@ -3,6 +3,7 @@ package main
 import (
 	"bytes"
 	"encoding/json"
+	"flag"
 	"fmt"
 	"io"
 	"log"
@@ -10,6 +11,7 @@ import (
 	"net/url"
 	"os"
 	"path/filepath"
+	"strconv"
 	"text/tabwriter"
 )
 
@@ -19,54 +21,90 @@ func main() {
 		log.Fatalf("Could not locate user home dir: %v", err)
 	}
 
-	configPath := filepath.Join(home, ".config", "vssm", "config.json")
-	cfg, err := LoadOrCreateConfig(configPath)
-	if err != nil {
-		log.Fatalf("Initialization failed: %v", err)
-	}
+	defaultConfigPath := filepath.Join(home, ".config", "vssm", "config.json")
 
-	if len(os.Args) < 2 {
+	configFlag := flag.String("config", defaultConfigPath, "Explicit path targeting a custom vssm config.json profile")
+
+	flag.Usage = printUsage
+	flag.Parse()
+
+	args := flag.Args()
+	if len(args) < 1 {
 		printUsage()
 		return
 	}
 
-	subCommand := os.Args[1]
+	configExplicitlySet := false
+	flag.Visit(func(f *flag.Flag) {
+		if f.Name == "config" {
+			configExplicitlySet = true
+		}
+	})
+
+	if !configExplicitlySet {
+		if envConfig := os.Getenv("VSSM_CONFIG_PATH"); envConfig != "" {
+			configFlag = &envConfig
+		}
+	}
+
+	absConfigPath, err := filepath.Abs(*configFlag)
+	if err != nil {
+		log.Fatalf("Failed to resolve absolute configuration path target: %v", err)
+	}
+
+	if configExplicitlySet {
+		if err := os.Setenv("VSSM_CONFIG_PATH", absConfigPath); err != nil {
+			log.Fatalf("Warning: could not set VSSM_CONFIG_PATH: %v", err)
+		}
+	}
+
+	cfg, err := LoadOrCreateConfig(absConfigPath)
+	if err != nil {
+		log.Fatalf("Initialization failed: %v", err)
+	}
+
+	listenAddress := cfg.Daemon.ListenAddress + ":" + strconv.Itoa(cfg.Daemon.Port)
+	fmt.Printf("Got listen address from config: %s\n", listenAddress)
+
+	subCommand := args[0]
 
 	switch subCommand {
+
 	case "daemon":
-		fmt.Println("Initializing VS server manager background supervisor...")
-		if err := StartDaemon(cfg); err != nil {
+		fmt.Printf("Initializing VS server manager background supervisor [Config: %s]...\n", absConfigPath)
+		if err := StartDaemon(cfg, absConfigPath); err != nil {
 			log.Fatalf("Daemon runtime fatal error: %v", err)
 		}
 
 	case "create":
-		if len(os.Args) < 4 {
-			log.Fatalf("Usage: go run . create <instance_name> <version>")
+		if len(args) < 4 {
+			log.Fatalf("Usage: vssm create <instance_name> <version> <port>")
 		}
-		name := os.Args[2]
-		version := os.Args[3]
-		sendIPCRequest(cfg, "POST", fmt.Sprintf("/instances/create?name=%s&version=%s", url.QueryEscape(name), url.QueryEscape(version)), nil)
+		name := args[1]
+		version := args[2]
+		port := args[3]
+		sendIPCRequest(cfg, "POST", fmt.Sprintf("/instances/create?name=%s&version=%s&port=%s", url.QueryEscape(name), url.QueryEscape(version), url.QueryEscape(port)), nil)
 
 	case "start":
-		if len(os.Args) < 3 {
-			log.Fatalf("Usage: go run . start <instance_name>")
+		if len(args) < 2 {
+			log.Fatalf("Usage: vssm start <instance_name>")
 		}
-		name := os.Args[2]
+		name := args[1]
 		sendIPCRequest(cfg, "POST", fmt.Sprintf("/instances/start?name=%s", url.QueryEscape(name)), nil)
 
 	case "stop":
-		if len(os.Args) < 3 {
-			log.Fatalf("Usage: go run . stop <instance_name>")
+		if len(args) < 2 {
+			log.Fatalf("Usage: vssm stop <instance_name>")
 		}
-		name := os.Args[2]
+		name := args[1]
 		sendIPCRequest(cfg, "POST", fmt.Sprintf("/instances/stop?name=%s", url.QueryEscape(name)), nil)
 
 	case "cmd":
-		if len(os.Args) < 4 {
-			log.Fatalf("Usage: go run . cmd <instance_name> \"<server command>\"")
+		if len(args) < 3 {
+			log.Fatalf("Usage: vssm cmd <instance_name> \"<server command>\"")
 		}
-		name := os.Args[2]
-		serverCmd := os.Args[3]
+		name := args[1]
+		serverCmd := args[2]
 
 		payload := CommandPayload{Command: serverCmd}
 		body, _ := json.Marshal(payload)
@@ -75,13 +113,31 @@ func main() {
 	case "list", "status":
 		fetchAndPrintStatus(cfg)
 
+	case "show-config":
+		fmt.Printf("%v", cfg.Storage.AppDataDir)
+
+	case "delete":
+		if len(args) < 2 {
+			log.Fatalf("Usage: vssm delete <instance_name>")
+		}
+
+		name := args[1]
+
+		deleteCmd := flag.NewFlagSet("delete", flag.ExitOnError)
+		purge := deleteCmd.Bool("purge", false, "Delete instance files from disk")
+		deleteCmd.Parse(args[2:])
+
+		sendIPCRequest(cfg, "POST", fmt.Sprintf("/instances/delete?name=%s&purge=%s", url.QueryEscape(name), url.QueryEscape(strconv.FormatBool(*purge))), nil)
+
 	default:
 		printUsage()
 	}
 }
 
 func sendIPCRequest(cfg *AppConfig, method string, path string, body io.Reader) {
-	targetUrl := fmt.Sprintf("http://%s%s", cfg.Daemon.ListenAddress, path)
+	listenAddress := cfg.Daemon.ListenAddress + ":" + strconv.Itoa(cfg.Daemon.Port)
+	targetUrl := fmt.Sprintf("http://%s%s", listenAddress, path)
+	fmt.Printf("Listen Addr: %s; Target URL: %s\n", listenAddress, targetUrl)
 	req, err := http.NewRequest(method, targetUrl, body)
 	if err != nil {
 		log.Fatalf("Failed to construct IPC frame: %v", err)
@@ -98,7 +154,8 @@ func sendIPCRequest(cfg *AppConfig, method string, path string, body io.Reader)
 	defer resp.Body.Close()
 
 	respBody, _ := io.ReadAll(resp.Body)
-	if resp.StatusCode != http.StatusOK {
+
+	if resp.StatusCode != http.StatusOK && resp.StatusCode != http.StatusCreated {
 		log.Fatalf("Error from daemon: %s", string(respBody))
 	}
 
@@ -106,7 +163,8 @@ func sendIPCRequest(cfg *AppConfig, method string, path string, body io.Reader)
 }
 
 func fetchAndPrintStatus(cfg *AppConfig) {
-	targetUrl := fmt.Sprintf("http://%s/instances/list", cfg.Daemon.ListenAddress)
+	listenAddress := cfg.Daemon.ListenAddress + ":" + strconv.Itoa(cfg.Daemon.Port)
+	targetUrl := fmt.Sprintf("http://%s/instances/list", listenAddress)
 	resp, err := http.Get(targetUrl)
 	if err != nil {
 		log.Fatalf("IPC connection failed. Is the vs-manager daemon running? Error: %v", err)
@@ -140,10 +198,13 @@ func fetchAndPrintStatus(cfg *AppConfig) {
 
 func printUsage() {
 	fmt.Println("VintageStory Server Manager")
-	fmt.Println("\nUsage:")
+	fmt.Println("\nGlobal Options:")
+	fmt.Println("  --config <path>                  Explicitly target a non-default config structure file location")
+	fmt.Println("\nUsage Commands:")
 	fmt.Println("  vssm daemon                      Starts the background process supervisor")
 	fmt.Println("  vssm create <name> <version>     Provisions baseline configuration and stores instance profile")
 	fmt.Println("  vssm start <name>                Launches an existing server instance using stored profile")
 	fmt.Println("  vssm stop <name>                 Gracefully shuts down a server instance")
 	fmt.Println("  vssm cmd <name> \"<command>\"    Dispatches a terminal console command down the pipe")
+	fmt.Println("  vssm list                        Displays the operational matrix of all instances")
 }

process.go

@@ -15,16 +15,24 @@ type ProcessManager struct {
 	sync.RWMutex
 	ActiveInstances map[string]*exec.Cmd
 	StdinPipes      map[string]io.WriteCloser
+	LogBuffers      map[string]*InstanceLogBuffer
+}
+
+type InstanceLogBuffer struct {
+	sync.RWMutex
+	Lines    []string
+	MaxLines int
 }
 
 func NewProcessManager() *ProcessManager {
 	return &ProcessManager{
 		ActiveInstances: make(map[string]*exec.Cmd),
 		StdinPipes:      make(map[string]io.WriteCloser),
+		LogBuffers:      map[string]*InstanceLogBuffer{},
 	}
 }
 
-func (pm *ProcessManager) StartInstance(name string, version string, options VsServerConfigOptions, config *AppConfig) error {
+func (pm *ProcessManager) StartInstance(name string, version string, meta InstanceMetadata, config *AppConfig) error {
 	pm.Lock()
 	defer pm.Unlock()
 
@@ -66,6 +74,7 @@ func (pm *ProcessManager) StartInstance(name string, version string, options VsS
 
 	pm.ActiveInstances[name] = cmd
 	pm.StdinPipes[name] = stdinPipe
+	pm.LogBuffers[name] = NewInstanceLogBuffer(200)
 
 	go pm.streamLogs(name, stdoutPipe)
 	go pm.watchProcessExit(name, cmd)
@@ -79,9 +88,17 @@ func (pm *ProcessManager) streamLogs(name string, stdout io.ReadCloser) {
 	scanner := bufio.NewScanner(stdout)
 
 	for scanner.Scan() {
-		//stream straight to the manager console terminal,
-		// but later dispatch payloads to our web UI or a log file
-		fmt.Printf("[%s]: %s\n", name, scanner.Text())
+		line := scanner.Text()
+
+		fmt.Printf("[%s]: %s\n", name, line)
+
+		pm.RLock()
+		buf, exists := pm.LogBuffers[name]
+		pm.RUnlock()
+
+		if exists {
+			buf.Append(line)
+		}
 	}
 }
 
@@ -119,3 +136,31 @@ func (pm *ProcessManager) SendCommand(name string, command string) error {
 
 	return nil
 }
+
+func NewInstanceLogBuffer(maxLines int) *InstanceLogBuffer {
+	return &InstanceLogBuffer{
+		Lines:    make([]string, 0, maxLines),
+		MaxLines: maxLines,
+	}
+}
+
+func (lb *InstanceLogBuffer) Append(line string) {
+	lb.Lock()
+	defer lb.Unlock()
+
+	if len(lb.Lines) >= lb.MaxLines {
+		// Shift array out by dropping index 0
+		lb.Lines = lb.Lines[1:]
+	}
+	lb.Lines = append(lb.Lines, line)
+}
+
+func (lb *InstanceLogBuffer) GetSnapshot() []string {
+	lb.RLock()
+	defer lb.RUnlock()
+
+	// Return a copy so the caller can safely iterate or serialize to JSON without lock conflicts
+	snapshot := make([]string, len(lb.Lines))
+	copy(snapshot, lb.Lines)
+	return snapshot
+}