Refactor: Restructure project

- Add an internal folder where all the internal code lives
- Make a state.go and state_test.go for the public interface

This gives a more clear separation between functions and modules. It
also makes this a more typical Go project setup.

1 files changed, 43 insertions, 0 deletions

diff --git a/internal/config.go b/internal/config.go
new file mode 100644
index 0000000..47f773e
--- /dev/null
+++ b/internal/config.go
@@ -0,0 +1,43 @@
+package internal
+
+import (
+	"encoding/json"
+	"fmt"
+	"io/ioutil"
+	"path"
+)
+
+type Config struct {
+	Name      string
+	Directory string
+}
+
+func (config *Config) Init(name string, directory string) {
+	config.Name = name
+	config.Directory = directory
+}
+
+func (config *Config) GetFilename() string {
+	pathString := path.Join(config.Directory, config.Name)
+	return fmt.Sprintf("%s.json", pathString)
+}
+
+func (config *Config) Save(readStruct interface{}) error {
+	configDirErr := EnsureDirectory(config.Directory)
+	if configDirErr != nil {
+		return configDirErr
+	}
+	jsonString, marshalErr := json.Marshal(readStruct)
+	if marshalErr != nil {
+		return marshalErr
+	}
+	return ioutil.WriteFile(config.GetFilename(), jsonString, 0o644)
+}
+
+func (config *Config) Load(writeStruct interface{}) error {
+	bytes, readErr := ioutil.ReadFile(config.GetFilename())
+	if readErr != nil {
+		return readErr
+	}
+	return json.Unmarshal(bytes, writeStruct)
+}