First real commit. Setting up for full CI/CD and testing pipeline

internal/storage/storage.go

@@ -0,0 +1,66 @@
+package storage
+
+import (
+	"encoding/json"
+	"os"
+	"path/filepath"
+)
+
+// Encode serializes a value into JSON.
+func Encode(value any) ([]byte, error) {
+	return json.MarshalIndent(value, "", "  ")
+}
+
+// Decode deserializes JSON into the supplied value.
+func Decode(data []byte, target any) error {
+	return json.Unmarshal(data, target)
+}
+
+// Save writes a value to a JSON file.
+func Save(path string, value any) error {
+	data, err := Encode(value)
+	if err != nil {
+		return err
+	}
+
+	dir := filepath.Dir(path)
+
+	if err := os.MkdirAll(dir, 0755); err != nil {
+		return err
+	}
+
+	file, err := os.CreateTemp(dir, ".settings-*.tmp")
+	if err != nil {
+		return err
+	}
+
+	tempPath := file.Name()
+
+	defer os.Remove(tempPath)
+
+	if _, err := file.Write(data); err != nil {
+		file.Close()
+		return err
+	}
+
+	if err := file.Sync(); err != nil {
+		file.Close()
+		return err
+	}
+
+	if err := file.Close(); err != nil {
+		return err
+	}
+
+	return os.Rename(tempPath, path)
+}
+
+// Load reads a JSON file into the supplied target.
+func Load(path string, target any) error {
+	data, err := os.ReadFile(path)
+	if err != nil {
+		return err
+	}
+
+	return Decode(data, target)
+}