Adding current project state

instance.go

@@ -0,0 +1,49 @@
+package main
+
+import (
+	"fmt"
+	"os"
+	"os/exec"
+	"path/filepath"
+)
+
+type InstanceState string
+
+const (
+	StateStopped InstanceState = "STOPPED"
+	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 {
+	instanceDir := filepath.Join(cfg.Storage.InstancesDir, name)
+
+	dirs := []string{
+		instanceDir,
+		filepath.Join(instanceDir, "Saves"),
+		filepath.Join(instanceDir, "Mods"),
+	}
+
+	for _, dir := range dirs {
+		if err := os.MkdirAll(dir, 0755); err != nil {
+			return fmt.Errorf("Failed creating core instance directory layout: %w", err)
+		}
+	}
+
+	instanceConfigPath := filepath.Join(instanceDir, "serverconfig.json")
+	if err := PrepareInstanceConfig(version, instanceConfigPath, options, cfg); err != nil {
+		return fmt.Errorf("Failed provisioning server baseline configuration: %w", err)
+	}
+
+	fmt.Printf("Instance '%s' (v%s) successfully initialized\n", name, version)
+	return nil
+}