feat(config): use xdg configuration (#13)

* docs(README): center title

* feat(config): use xdg configuration

Author: armandsauzay

README.md

@@ -1,4 +1,4 @@
-# Note ✍️
+<h1 align="center">Note ✍️</h1>
 
 <p align="center">
   <img src="docs/demo.gif" alt="Note Demo" style="width: 100%;">

config.go

@@ -46,18 +46,29 @@ type Dimensions struct {
 }
 
 func getConfigDir() (string, error) {
-	homeDir, err := os.UserHomeDir()
-	if err != nil {
-		return "", err
+	return filepath.Join(getConfigHome(), "note"), nil
+}
+
+func getConfigHome() string {
+	if xdgConfig := os.Getenv("XDG_CONFIG_HOME"); xdgConfig != "" && filepath.IsAbs(xdgConfig) {
+		return xdgConfig
 	}
-	return filepath.Join(homeDir, ".config", "note"), nil
+	homeDir, _ := os.UserHomeDir()
+	return filepath.Join(homeDir, ".config")
 }
 
-func DefaultConfig() *Config {
+func getDataHome() string {
+	if xdgData := os.Getenv("XDG_DATA_HOME"); xdgData != "" && filepath.IsAbs(xdgData) {
+		return xdgData
+	}
 	homeDir, _ := os.UserHomeDir()
+	return filepath.Join(homeDir, ".local", "share")
+}
+
+func DefaultConfig() *Config {
 	return &Config{
-		NotesDir:      filepath.Join(homeDir, ".note"),
-		ArchiveDir:    filepath.Join(homeDir, ".note", "archive"),
+		NotesDir:      filepath.Join(getDataHome(), "note"),
+		ArchiveDir:    filepath.Join(getDataHome(), "note", "archive"),
 		DefaultEditor: "vim",
 		Layout: Layout{
 			SidebarWidth: 30,

config_test.go

@@ -0,0 +1,56 @@
+// config_test.go
+package main
+
+import (
+	"os"
+	"path/filepath"
+	"testing"
+)
+
+func TestXDGPaths(t *testing.T) {
+	// Save original env vars
+	originalConfigHome := os.Getenv("XDG_CONFIG_HOME")
+	originalDataHome := os.Getenv("XDG_DATA_HOME")
+	defer func() {
+		os.Setenv("XDG_CONFIG_HOME", originalConfigHome)
+		os.Setenv("XDG_DATA_HOME", originalDataHome)
+	}()
+
+	homeDir, _ := os.UserHomeDir()
+	tests := []struct {
+		name          string
+		xdgConfigHome string
+		xdgDataHome   string
+		wantConfig    string
+		wantData      string
+	}{
+		{
+			name:          "XDG vars set",
+			xdgConfigHome: "/custom/config",
+			xdgDataHome:   "/custom/data",
+			wantConfig:    "/custom/config",
+			wantData:      "/custom/data",
+		},
+		{
+			name:          "XDG vars empty",
+			xdgConfigHome: "",
+			xdgDataHome:   "",
+			wantConfig:    filepath.Join(homeDir, ".config"),
+			wantData:      filepath.Join(homeDir, ".local", "share"),
+		},
+	}
+
+	for _, tt := range tests {
+		t.Run(tt.name, func(t *testing.T) {
+			os.Setenv("XDG_CONFIG_HOME", tt.xdgConfigHome)
+			os.Setenv("XDG_DATA_HOME", tt.xdgDataHome)
+
+			if got := getConfigHome(); got != tt.wantConfig {
+				t.Errorf("getConfigHome() = %v, want %v", got, tt.wantConfig)
+			}
+			if got := getDataHome(); got != tt.wantData {
+				t.Errorf("getDataHome() = %v, want %v", got, tt.wantData)
+			}
+		})
+	}
+}