Refactor file download handlers to implement local storage fallback and enhance organization creation with slug generation

b0esche_cloud/lib/pages/home_page.dart

@@ -402,7 +402,7 @@ class _HomePageState extends State<HomePage> with TickerProviderStateMixin {
                                                 }
                                                 return Column(
                                                   children: [
-                                                    const SizedBox(height: 80),
+                                                    const SizedBox(height: 16),
                                                     _buildOrgRow(context),
                                                     Expanded(
                                                       child: _buildDrive(

go_cloud/internal/http/routes.go

@@ -1383,8 +1383,38 @@ func downloadOrgFileHandler(w http.ResponseWriter, r *http.Request, db *database
 		errors.LogError(r, err, "Failed to download from Nextcloud, trying local storage")
 	}
 
-	// Fallback to local storage (if implemented)
+	// Fallback to local disk (used when WebDAV is not configured)
+	baseDir := filepath.Clean(filepath.Join("/tmp/uploads/orgs", orgID.String()))
+	rel := strings.TrimPrefix(filePath, "/")
+	localPath := filepath.Join(baseDir, rel)
+	// Prevent path traversal escaping the baseDir
+	if !strings.HasPrefix(localPath, baseDir+string(os.PathSeparator)) && localPath != baseDir {
+		errors.WriteError(w, errors.CodeInvalidArgument, "Invalid path", http.StatusBadRequest)
+		return
+	}
+
+	f, err := os.Open(localPath)
+	if err != nil {
 		errors.WriteError(w, errors.CodeNotFound, "File not found", http.StatusNotFound)
+		return
+	}
+	defer f.Close()
+	info, _ := f.Stat()
+	fileName := path.Base(filePath)
+	contentType := "application/octet-stream"
+	if strings.HasSuffix(strings.ToLower(fileName), ".pdf") {
+		contentType = "application/pdf"
+	} else if strings.HasSuffix(strings.ToLower(fileName), ".png") {
+		contentType = "image/png"
+	} else if strings.HasSuffix(strings.ToLower(fileName), ".jpg") || strings.HasSuffix(strings.ToLower(fileName), ".jpeg") {
+		contentType = "image/jpeg"
+	}
+	w.Header().Set("Content-Disposition", fmt.Sprintf("inline; filename=\"%s\"", fileName))
+	w.Header().Set("Content-Type", contentType)
+	if info != nil {
+		w.Header().Set("Content-Length", fmt.Sprintf("%d", info.Size()))
+	}
+	io.Copy(w, f)
 }
 
 // downloadUserFileHandler downloads a file from user's personal workspace
@@ -1437,6 +1467,36 @@ func downloadUserFileHandler(w http.ResponseWriter, r *http.Request, db *databas
 		errors.LogError(r, err, "Failed to download from Nextcloud, trying local storage")
 	}
 
-	// Fallback to local storage (if implemented)
+	// Fallback to local disk (used when WebDAV is not configured)
+	baseDir := filepath.Clean(filepath.Join("/tmp/uploads/users", userID.String()))
+	rel := strings.TrimPrefix(filePath, "/")
+	localPath := filepath.Join(baseDir, rel)
+	// Prevent path traversal escaping the baseDir
+	if !strings.HasPrefix(localPath, baseDir+string(os.PathSeparator)) && localPath != baseDir {
+		errors.WriteError(w, errors.CodeInvalidArgument, "Invalid path", http.StatusBadRequest)
+		return
+	}
+
+	f, err := os.Open(localPath)
+	if err != nil {
 		errors.WriteError(w, errors.CodeNotFound, "File not found", http.StatusNotFound)
+		return
+	}
+	defer f.Close()
+	info, _ := f.Stat()
+	fileName := path.Base(filePath)
+	contentType := "application/octet-stream"
+	if strings.HasSuffix(strings.ToLower(fileName), ".pdf") {
+		contentType = "application/pdf"
+	} else if strings.HasSuffix(strings.ToLower(fileName), ".png") {
+		contentType = "image/png"
+	} else if strings.HasSuffix(strings.ToLower(fileName), ".jpg") || strings.HasSuffix(strings.ToLower(fileName), ".jpeg") {
+		contentType = "image/jpeg"
+	}
+	w.Header().Set("Content-Disposition", fmt.Sprintf("inline; filename=\"%s\"", fileName))
+	w.Header().Set("Content-Type", contentType)
+	if info != nil {
+		w.Header().Set("Content-Length", fmt.Sprintf("%d", info.Size()))
+	}
+	io.Copy(w, f)
 }

go_cloud/internal/org/org.go

@@ -2,10 +2,14 @@ package org
 
 import (
 	"context"
+	"fmt"
+	"regexp"
+	"strings"
 
 	"go.b0esche.cloud/backend/internal/database"
 
 	"github.com/google/uuid"
+	"github.com/jackc/pgconn"
 )
 
 // ResolveUserOrgs returns the organizations a user belongs to
@@ -24,17 +28,58 @@ func CheckMembership(ctx context.Context, db *database.DB, userID, orgID uuid.UU
 
 // CreateOrg creates a new organization and adds the user as owner
 func CreateOrg(ctx context.Context, db *database.DB, userID uuid.UUID, name, slug string) (*database.Organization, error) {
-	if slug == "" {
-		// Simple slug generation
-		slug = name // TODO: make URL safe
+	trimmedName := strings.TrimSpace(name)
+	if trimmedName == "" {
+		return nil, fmt.Errorf("organization name cannot be empty")
+	}
+
+	baseSlug := slugify(slug)
+	if baseSlug == "" {
+		baseSlug = slugify(trimmedName)
+	}
+	if baseSlug == "" {
+		baseSlug = fmt.Sprintf("org-%s", uuid.NewString()[:8])
+	}
+
+	var org *database.Organization
+	var err error
+	// Try a handful of suffixes on unique constraint violation
+	for i := 0; i < 5; i++ {
+		candidate := baseSlug
+		if i > 0 {
+			candidate = fmt.Sprintf("%s-%d", baseSlug, i+1)
+		}
+		org, err = db.CreateOrg(ctx, trimmedName, candidate)
+		if err != nil {
+			if pgErr, ok := err.(*pgconn.PgError); ok && pgErr.Code == "23505" {
+				// Unique violation; try next suffix
+				continue
+			}
+			return nil, err
+		}
+		break
 	}
-	org, err := db.CreateOrg(ctx, name, slug)
 	if err != nil {
 		return nil, err
 	}
-	err = db.AddMembership(ctx, userID, org.ID, "owner")
-	if err != nil {
+
+	if err = db.AddMembership(ctx, userID, org.ID, "owner"); err != nil {
 		return nil, err
 	}
 	return org, nil
 }
+
+// slugify converts a string to a URL-safe slug with hyphens.
+func slugify(s string) string {
+	lower := strings.ToLower(strings.TrimSpace(s))
+	if lower == "" {
+		return ""
+	}
+	// Replace non-alphanumeric with hyphen
+	re := regexp.MustCompile(`[^a-z0-9]+`)
+	slug := re.ReplaceAllString(lower, "-")
+	slug = strings.Trim(slug, "-")
+	// Collapse multiple hyphens
+	slug = strings.ReplaceAll(slug, "--", "-")
+	return slug
+}