refactoring

domain/config.go

@@ -0,0 +1,38 @@
+package domain
+
+import (
+	"encoding/json"
+	"fmt"
+	"os"
+)
+
+// Config struct for ~/.redmine-tree.json
+type Config struct {
+	Host  string `json:"host"`
+	Token string `json:"token"`
+}
+
+// Load configuration from ~/.redmine-tree.json
+func LoadConfig() (*Config, error) {
+	homeDir, err := os.UserHomeDir()
+	if err != nil {
+		return nil, fmt.Errorf("could not get user home directory: %w", err)
+	}
+
+	configPath := fmt.Sprintf("%s/.redmine-tree.json", homeDir)
+	file, err := os.Open(configPath)
+	if err != nil {
+		if os.IsNotExist(err) {
+			return nil, nil // File does not exist, not an error
+		}
+		return nil, fmt.Errorf("could not open config file: %w", err)
+	}
+	defer file.Close()
+
+	var config Config
+	if err := json.NewDecoder(file).Decode(&config); err != nil {
+		return nil, fmt.Errorf("could not decode config file: %w", err)
+	}
+
+	return &config, nil
+}