Fixing updates

core/run_manager/run_manager.go

@@ -0,0 +1,158 @@
+package run_manager
+
+import (
+	"context"
+	"fmt"
+	"os"
+	"path/filepath"
+
+	"github.com/akyaiy/GoSally-mvp/core/utils"
+)
+
+type RunManagerContract interface {
+	Get(index string) (string, error)
+
+	// Set recursively creates a file in runDir
+	Set(index string) error
+
+	File(index string) RunFileManagerContract
+
+	indexPaths() error
+}
+
+var (
+	created      bool
+	runDir       string
+	indexedPaths = make(map[string]string)
+)
+
+type RunFileManagerContract interface {
+	Open() (*os.File, error)
+	Close() error
+	Watch(parentCtx context.Context, callback func()) (context.CancelFunc, error)
+}
+
+type RunFileManager struct {
+	err         error
+	indexedPath string
+	file        *os.File
+}
+
+// func (c *CoreState) RuntimeDir() RunManagerContract {
+// 	return c.RM
+// }
+
+// Create creates a temp directory
+func Create(uuid32 string) (string, error) {
+	if created {
+		return runDir, fmt.Errorf("runtime directory is already created")
+	}
+	path, err := os.MkdirTemp("", fmt.Sprintf("*-%s-%s", uuid32, "gosally-runtime"))
+	if err != nil {
+		return "", err
+	}
+	runDir = path
+	created = true
+	return path, nil
+}
+
+func Clean() error {
+	created = false
+	indexedPaths = nil
+	return utils.CleanTempRuntimes(runDir)
+}
+
+// Quite dangerous and goofy.
+// TODO: implement a better variant of runDir indexing on the second stage of initialization
+func Toggle() string {
+	runDir = filepath.Dir(os.Args[0])
+	created = true
+	return runDir
+}
+
+func Get(index string) (string, error) {
+	if !created {
+		return "", fmt.Errorf("runtime directory is not created")
+	}
+	if indexedPaths == nil {
+		err := indexPaths()
+		if err != nil {
+			return "", nil
+		}
+	}
+	if indexedPaths == nil {
+		return "", fmt.Errorf("indexedPaths is nil")
+	}
+	value, ok := indexedPaths[index]
+	if !ok {
+		err := indexPaths()
+		if err != nil {
+			return "", err
+		}
+		value, ok = indexedPaths[index]
+		if !ok {
+			return "", fmt.Errorf("cannot detect file under index %s", index)
+		}
+	}
+	return value, nil
+}
+
+func Set(index string) error {
+	if !created {
+		return fmt.Errorf("runtime directory is not created")
+	}
+	fullPath := filepath.Join(runDir, index)
+
+	dir := filepath.Dir(fullPath)
+	err := os.MkdirAll(dir, 0755)
+	if err != nil {
+		return err
+	}
+
+	f, err := os.OpenFile(fullPath, os.O_CREATE|os.O_WRONLY, 0644)
+	if err != nil {
+		return err
+	}
+	defer f.Close()
+
+	if indexedPaths == nil {
+		err = indexPaths()
+		if err != nil {
+			return err
+		}
+	} else {
+		indexedPaths[index] = fullPath
+	}
+
+	return nil
+}
+
+func SetDir(index string) error {
+	if !created {
+		return fmt.Errorf("runtime directory is not created")
+	}
+	fullPath := filepath.Join(runDir, index)
+
+	err := os.MkdirAll(fullPath, 0755)
+	if err != nil {
+		return err
+	}
+
+	return nil
+}
+
+func indexPaths() error {
+	if !created {
+		return fmt.Errorf("runtime directory is not created")
+	}
+	i, err := utils.IndexPaths(runDir)
+	if err != nil {
+		return err
+	}
+	indexedPaths = i
+	return nil
+}
+
+func RuntimeDir() string {
+	return runDir
+}