feat: implement custom attachment download feature with folder selection and automatic opening of Explorer

main.go

@@ -4,11 +4,14 @@ import (
 	"embed"
 	"log"
 	"os"
+	"path/filepath"
+	"regexp"
 	"strings"
 
 	"github.com/wailsapp/wails/v2"
 	"github.com/wailsapp/wails/v2/pkg/options"
 	"github.com/wailsapp/wails/v2/pkg/options/assetserver"
+	"github.com/wailsapp/wails/v2/pkg/options/windows"
 	"github.com/wailsapp/wails/v2/pkg/runtime"
 )
 
@@ -33,6 +36,12 @@ func main() {
 	}
 	defer CloseLogger()
 
+	// Load config.ini to get WebView2 paths
+	configPath := filepath.Join(filepath.Dir(os.Args[0]), "config.ini")
+	if _, err := os.Stat(configPath); os.IsNotExist(err) {
+		configPath = "config.ini" // fallback to current directory
+	}
+
 	// Check for custom args
 	args := os.Args
 	uniqueId := "emly-app-lock"
@@ -74,6 +83,49 @@ func main() {
 	}
 
 	// Create application with options
+	// Configure WebView2 DataPath (user data folder)
+	userDataPath := filepath.Join(os.Getenv("APPDATA"), "EMLy")          // default
+	downloadPath := filepath.Join(os.Getenv("USERPROFILE"), "Downloads") // default
+
+	// Helper function to expand Windows-style environment variables
+	expandEnvVars := func(path string) string {
+		// Match %%VAR%% or %VAR% patterns and replace with actual values
+		re := regexp.MustCompile(`%%([^%]+)%%|%([^%]+)%`)
+		return re.ReplaceAllStringFunc(path, func(match string) string {
+			varName := strings.Trim(match, "%")
+			return os.Getenv(varName)
+		})
+	}
+
+	// Load paths from config.ini if available
+	if cfg, err := os.ReadFile(configPath); err == nil {
+		// Simple INI parsing for these specific values
+		lines := strings.Split(string(cfg), "\n")
+		for _, line := range lines {
+			line = strings.TrimSpace(line)
+			if strings.HasPrefix(line, "WEBVIEW2_USERDATA_PATH") {
+				parts := strings.SplitN(line, "=", 2)
+				if len(parts) == 2 {
+					path := strings.TrimSpace(parts[1])
+					if path != "" {
+						userDataPath = expandEnvVars(path)
+					}
+				}
+			} else if strings.HasPrefix(line, "WEBVIEW2_DOWNLOAD_PATH") {
+				parts := strings.SplitN(line, "=", 2)
+				if len(parts) == 2 {
+					path := strings.TrimSpace(parts[1])
+					if path != "" {
+						downloadPath = expandEnvVars(path)
+					}
+				}
+			}
+		}
+	}
+
+	log.Printf("WebView2 UserDataPath: %s", userDataPath)
+	log.Printf("WebView2 DownloadPath: %s", downloadPath)
+
 	err := wails.Run(&options.App{
 		Title:  windowTitle,
 		Width:  windowWidth,
@@ -94,6 +146,10 @@ func main() {
 		MinWidth:                 964,
 		MinHeight:                690,
 		Frameless:                frameless,
+		Windows: &windows.Options{
+			WebviewUserDataPath: userDataPath,
+			WebviewBrowserPath:  "", // Empty = use system Edge WebView2
+		},
 	})
 
 	if err != nil {