feat(libreoffice): preserve filenames for zipped files instead of using randomly generated UUID filenames (#793)

* feat(libreoffice): preserve filenames for zipped files instead of using generated UUID filenames

* chore: move github.com/google/uuid back to its original line

* fix: add libreoffice/routes.go to PR

pkg/modules/api/context.go

@@ -191,10 +191,18 @@ func (ctx *Context) FormData() *FormData {
 	}
 }
 
-// GeneratePath generates a path within the context's working directory. It
-// does not create a file.
-func (ctx *Context) GeneratePath(extension string) string {
-	return fmt.Sprintf("%s/%s%s", ctx.dirPath, uuid.New(), extension)
+// GeneratePath generates a path within the context's working directory. It does not create a file.
+// It either generates a new UUID-based filename or uses the provided filename.
+func (ctx *Context) GeneratePath(extension string, optionalFilename ...string) string {
+	var filename string
+	if len(optionalFilename) > 0 {
+		// Use the provided filename
+		filename = optionalFilename[0]
+	} else {
+		// Generate a new UUID-based filename
+		filename = uuid.New().String()
+	}
+	return fmt.Sprintf("%s/%s%s", ctx.dirPath, filename, extension)
 }
 
 // AddOutputPaths adds the given paths. Those paths will be used later to build

pkg/modules/libreoffice/routes.go

@@ -4,6 +4,8 @@ import (
 	"errors"
 	"fmt"
 	"net/http"
+	"path/filepath"
+	"strings"
 
 	"github.com/labstack/echo/v4"
 
@@ -51,10 +53,24 @@ func convertRoute(libreOffice libreofficeapi.Uno, engine gotenberg.PdfEngine) ap
 				PdfUa: pdfua,
 			}
 
+			// We need to check and see if there are any duplicate filenames in inputPaths.
+			filenameCounts := make(map[string]int)
+			for _, path := range inputPaths {
+				filename := strings.TrimSuffix(filepath.Base(path), filepath.Ext(path))
+				filenameCounts[filename]++
+			}
+
 			// Alright, let's convert each document to PDF.
 			outputPaths := make([]string, len(inputPaths))
 			for i, inputPath := range inputPaths {
-				outputPaths[i] = ctx.GeneratePath(".pdf")
+				filename := strings.TrimSuffix(filepath.Base(inputPath), filepath.Ext(inputPath))
+				extension := filepath.Ext(inputPath)
+				// Ex: `document.docx`, `document.doc` -> `document.docx.pdf`, `document.doc.pdf`
+				if filenameCounts[filename] > 1 {
+					outputPaths[i] = ctx.GeneratePath(".pdf", filename+extension)
+				} else {
+					outputPaths[i] = ctx.GeneratePath(".pdf", filename)
+				}
 
 				options := libreofficeapi.Options{
 					Landscape:  landscape,

pkg/modules/libreoffice/routes_test.go

@@ -4,6 +4,7 @@ import (
 	"context"
 	"errors"
 	"net/http"
+	"reflect"
 	"testing"
 
 	"github.com/labstack/echo/v4"
@@ -22,6 +23,7 @@ func TestConvertRoute(t *testing.T) {
 		engine                 gotenberg.PdfEngine
 		expectOptions          libreofficeapi.Options
 		expectError            bool
+		expectFileNames        []string
 		expectHttpError        bool
 		expectHttpStatus       int
 		expectOutputPathsCount int
@@ -492,6 +494,72 @@ func TestConvertRoute(t *testing.T) {
 			expectHttpError:        false,
 			expectOutputPathsCount: 1,
 		},
+		{
+			scenario: "success (not merged, unique filenames with different extensions)",
+			ctx: func() *api.ContextMock {
+				ctx := &api.ContextMock{Context: new(api.Context)}
+				ctx.SetFiles(map[string]string{
+					"document.docx":  "/document.docx",
+					"document2.docx": "/document2.docx",
+				})
+				ctx.SetValues(map[string][]string{
+					"merge": {
+						"false",
+					},
+				})
+				return ctx
+			}(),
+			libreOffice: &libreofficeapi.ApiMock{
+				PdfMock: func(ctx context.Context, logger *zap.Logger, inputPath, outputPath string, options libreofficeapi.Options) error {
+					return nil
+				},
+				ExtensionsMock: func() []string {
+					return []string{".docx", ".doc"}
+				},
+			},
+			engine: &gotenberg.PdfEngineMock{
+				MergeMock: func(ctx context.Context, logger *zap.Logger, inputPaths []string, outputPath string) error {
+					return nil
+				},
+			},
+			expectError:            false,
+			expectHttpError:        false,
+			expectOutputPathsCount: 2,
+		},
+		{
+			scenario: "success (not merged, duplicate filenames with different extensions)",
+			ctx: func() *api.ContextMock {
+				ctx := &api.ContextMock{Context: new(api.Context)}
+				ctx.SetFiles(map[string]string{
+					"document.docx":  "/document.docx",
+					"document2.docx": "/document2.docx",
+					"document2.doc":  "/document2.doc",
+				})
+				ctx.SetValues(map[string][]string{
+					"merge": {
+						"false",
+					},
+				})
+				return ctx
+			}(),
+			libreOffice: &libreofficeapi.ApiMock{
+				PdfMock: func(ctx context.Context, logger *zap.Logger, inputPath, outputPath string, options libreofficeapi.Options) error {
+					return nil
+				},
+				ExtensionsMock: func() []string {
+					return []string{".docx", ".doc"}
+				},
+			},
+			engine: &gotenberg.PdfEngineMock{
+				MergeMock: func(ctx context.Context, logger *zap.Logger, inputPaths []string, outputPath string) error {
+					return nil
+				},
+			},
+			expectError:            false,
+			expectHttpError:        false,
+			expectOutputPathsCount: 3,
+			expectFileNames:        []string{"document.pdf", "document2.docx.pdf", "document2.doc.pdf"},
+		},
 		{
 			scenario: "success with non-native PDF/A & PDF/UA (merge)",
 			ctx: func() *api.ContextMock {
@@ -617,6 +685,10 @@ func TestConvertRoute(t *testing.T) {
 			if tc.expectOutputPathsCount != len(tc.ctx.OutputPaths()) {
 				t.Errorf("expected %d output paths but got %d", tc.expectOutputPathsCount, len(tc.ctx.OutputPaths()))
 			}
+
+			if !reflect.DeepEqual(tc.ctx.OutputPaths(), tc.expectFileNames) {
+				t.Errorf("expected output paths %v, got %v", tc.expectFileNames, tc.ctx.OutputPaths())
+			}
 		})
 	}
 }