Merge pull request 'Support uploading multiple files' (#5) from multiUpload into main

Reviewed-on: #5

handlers.go

@@ -5,8 +5,10 @@ import (
 	"fmt"
 	"io"
 	"net/http"
+	"net/url"
 	"os"
 	"path/filepath"
+	"strings"
 )
 
 type ProgressInfo struct {
@@ -50,53 +52,101 @@ func handleRoot(w http.ResponseWriter, r *http.Request) {
 }
 
 func handleUpload(w http.ResponseWriter, r *http.Request) {
-	file, header, err := r.FormFile("file")
+	err := r.ParseMultipartForm(32 << 20)
 	if err != nil {
 		http.Error(w, err.Error(), http.StatusBadRequest)
 		return
 	}
-	defer file.Close()
 
-	tempFile, err := os.CreateTemp(uploadDir, header.Filename)
-	if err != nil {
-		http.Error(w, err.Error(), http.StatusInternalServerError)
-		return
-	}
-	defer tempFile.Close()
-
-	_, err = io.Copy(tempFile, file)
-	if err != nil {
-		http.Error(w, err.Error(), http.StatusInternalServerError)
+	files := r.MultipartForm.File["files"]
+	if len(files) == 0 {
+		http.Error(w, "No files uploaded", http.StatusBadRequest)
 		return
 	}
 
-	tempFilename := filepath.Base(tempFile.Name())
+	uploadedFiles := []string{}
 
-	_, err = parseInputFile(tempFile.Name())
-	if err != nil {
-		http.Error(w, err.Error(), http.StatusInternalServerError)
+	for _, fileHeader := range files {
+		file, err := fileHeader.Open()
+		if err != nil {
+			http.Error(w, err.Error(), http.StatusInternalServerError)
+			return
+		}
+		defer file.Close()
+
+		dst, err := os.Create(filepath.Join(uploadDir, fileHeader.Filename))
+		if err != nil {
+			http.Error(w, err.Error(), http.StatusInternalServerError)
+			return
+		}
+		defer dst.Close()
+
+		_, err = io.Copy(dst, file)
+		if err != nil {
+			http.Error(w, err.Error(), http.StatusInternalServerError)
+			return
+		}
+
+		uploadedFiles = append(uploadedFiles, fileHeader.Filename)
+
+		_, err = parseInputFile(dst.Name())
+		if err != nil {
+			http.Error(w, err.Error(), http.StatusInternalServerError)
+			return
+		}
+	}
+
+	validFiles := []string{}
+	for _, file := range uploadedFiles {
+		if file != "" {
+			validFiles = append(validFiles, file)
+		}
+	}
+
+	if len(validFiles) == 0 {
+		http.Error(w, "No valid files were uploaded", http.StatusBadRequest)
 		return
 	}
 
-	http.Redirect(w, r, "/select?filename="+tempFilename, http.StatusSeeOther)
+	http.Redirect(w, r, "/select?files="+url.QueryEscape(strings.Join(validFiles, ",")), http.StatusSeeOther)
 }
 
 func handleSelect(w http.ResponseWriter, r *http.Request) {
-	filename := r.URL.Query().Get("filename")
-	items, err := parseInputFile(filepath.Join(uploadDir, filename))
-	if err != nil {
-		http.Error(w, err.Error(), http.StatusInternalServerError)
+	filesParam := r.URL.Query().Get("files")
+	filenames := strings.Split(filesParam, ",")
+
+	allItems := make(map[string]map[string][]Item)
+
+	for _, filename := range filenames {
+		if filename == "" {
+			continue
+		}
+		fullPath := filepath.Join(uploadDir, filename)
+
+		if _, err := os.Stat(fullPath); os.IsNotExist(err) {
+			continue
+		}
+
+		items, err := parseInputFile(fullPath)
+		if err != nil {
+			continue
+		}
+
+		groupedItems := groupItemsBySeason(items)
+		allItems[filename] = groupedItems
+	}
+
+	if len(allItems) == 0 {
+		http.Error(w, "No valid files were processed", http.StatusBadRequest)
 		return
 	}
 
-	groupedItems := groupItemsBySeason(items)
-
-	err = templates.ExecuteTemplate(w, "select", struct {
-		Filename string
-		Items    map[string][]Item
+	err := templates.ExecuteTemplate(w, "select", struct {
+		Filenames string
+		AllItems  map[string]map[string][]Item
 	}{
-		Filename: filename,
-		Items:    groupedItems,
+		Filenames: filesParam,
+		AllItems:  allItems,
 	})
 	if err != nil {
 		http.Error(w, err.Error(), http.StatusInternalServerError)
@@ -104,36 +154,47 @@ func handleSelect(w http.ResponseWriter, r *http.Request) {
 }
 
 func handleProcess(w http.ResponseWriter, r *http.Request) {
-	filename := r.FormValue("filename")
-	selectedItems := r.Form["items"]
-
-	items, err := parseInputFile(filepath.Join(uploadDir, filename))
-	if err != nil {
-		http.Error(w, err.Error(), http.StatusInternalServerError)
+	if err := r.ParseForm(); err != nil {
+		http.Error(w, err.Error(), http.StatusBadRequest)
 		return
 	}
 
-	filteredItems := filterSelectedItems(items, selectedItems)
+	selectedItems := r.Form["items"]
+	if len(selectedItems) == 0 {
+		http.Error(w, "No items selected", http.StatusBadRequest)
+		return
+	}
 
-	go func() {
-		err := processItems(filename, filteredItems)
+	itemsByFile := make(map[string][]string)
+	for _, item := range selectedItems {
+		parts := strings.SplitN(item, ":", 2)
+		if len(parts) != 2 {
+			continue
+		}
+		filename, itemName := parts[0], parts[1]
+		itemsByFile[filename] = append(itemsByFile[filename], itemName)
+	}
+
+	for filename, items := range itemsByFile {
+		fullPath := filepath.Join(uploadDir, filename)
+		allItems, err := parseInputFile(fullPath)
 		if err != nil {
-			fmt.Printf("Error processing file: %v\n", err)
+			http.Error(w, err.Error(), http.StatusInternalServerError)
+			return
 		}
 
-		os.Remove(filepath.Join(uploadDir, filename))
-	}()
+		selectedItems := filterSelectedItems(allItems, items)
+		go processItems(filename, selectedItems)
+	}
 
-	http.Redirect(w, r, "/progress?filename="+filename, http.StatusSeeOther)
+	http.Redirect(w, r, "/", http.StatusSeeOther)
 }
 
 func handleProgress(w http.ResponseWriter, r *http.Request) {
 	filename := r.URL.Query().Get("filename")
-	fmt.Printf("Handling progress request for filename: %s\n", filename)
 
 	if r.Header.Get("Accept") == "application/json" {
 		progressInfo := getProgress(filename)
-		fmt.Printf("Progress info for %s: %+v\n", filename, progressInfo)
 
 		if progressInfo == nil {
 			w.WriteHeader(http.StatusNotFound)
@@ -144,7 +205,6 @@ func handleProgress(w http.ResponseWriter, r *http.Request) {
 		w.Header().Set("Content-Type", "application/json")
 		err := json.NewEncoder(w).Encode(progressInfo)
 		if err != nil {
-			fmt.Printf("Error encoding progress info: %v\n", err)
 			http.Error(w, "Internal Server Error", http.StatusInternalServerError)
 			return
 		}
@@ -206,7 +266,6 @@ func handleResume(w http.ResponseWriter, r *http.Request) {
 	jobInfo.Paused = false
 	jobInfo.ResumeChan <- struct{}{}
 
-	// Update the progress information
 	progressMutex.Lock()
 	if progressInfo, ok := progress[filename]; ok {
 		progressInfo.Paused = false
@@ -291,5 +350,4 @@ func updateProgress(filename string, value float64, currentFile string) {
 			Paused:      paused,
 		}
 	}
-	fmt.Printf("Progress updated for %s: %.2f%%, Current file: %s, Paused: %v\n", filename, value, currentFile, paused)
 }

templates/index

@@ -112,7 +112,7 @@
 <body>
     <h1>Simple Downloader</h1>
     <form action="/upload" method="post" enctype="multipart/form-data">
-        <input type="file" name="file" accept=".drmd">
+        <input type="file" name="files" accept=".drmd" multiple>
         <input type="submit" value="Upload and Process">
     </form>
     <h2>Currently Running Jobs</h2>

templates/select

@@ -55,22 +55,25 @@
 <body>
     <h1>Select Items to Download</h1>
     <form action="/process" method="post">
-        <input type="hidden" name="filename" value="{{.Filename}}">
-        {{range $season, $items := .Items}}
-            <div class="season">
-                <div class="season-title">
-                    <input type="checkbox" class="season-checkbox" id="season-{{$season}}" checked onchange="toggleSeason('{{$season}}')">
-                    <label for="season-{{$season}}">{{$season}}</label>
-                </div>
-                {{range $item := $items}}
-                    <div class="item">
-                        <label>
-                            <input type="checkbox" name="items" value="{{$item.Filename}}" checked class="episode-{{$season}}">
-                            {{$item.Filename}}
-                        </label>
+        <input type="hidden" name="filenames" value="{{.Filenames}}">
+        {{range $filename, $fileItems := .AllItems}}
+            <h2>{{$filename}}</h2>
+            {{range $season, $items := $fileItems}}
+                <div class="season">
+                    <div class="season-title">
+                        <input type="checkbox" class="season-checkbox" id="season-{{$filename}}-{{$season}}" checked onchange="toggleSeason('{{$filename}}-{{$season}}')">
+                        <label for="season-{{$filename}}-{{$season}}">{{$season}}</label>
                     </div>
-                {{end}}
-            </div>
+                    {{range $item := $items}}
+                        <div class="item">
+                            <label>
+                                <input type="checkbox" name="items" value="{{$filename}}:{{$item.Filename}}" checked class="episode-{{$filename}}-{{$season}}">
+                                {{$item.Filename}}
+                            </label>
+                        </div>
+                    {{end}}
+                </div>
+            {{end}}
         {{end}}
         <div>
             <button type="button" onclick="selectAll(true)">Select All</button>

utils.go

@@ -138,16 +138,24 @@ func findOrCreateSegmentTimeline(adaptationSet *etree.Element) *etree.Element {
 	return segmentTemplate.CreateElement("SegmentTimeline")
 }
 
-func parseInputFile(inputFile string) ([]Item, error) {
-	jsonFile, err := os.Open(inputFile)
+func parseInputFile(filename string) ([]Item, error) {
+	fileInfo, err := os.Stat(filename)
 	if err != nil {
-		return nil, fmt.Errorf("error opening file %s: %v", inputFile, err)
+		return nil, err
+	}
+	if fileInfo.IsDir() {
+		return nil, fmt.Errorf("%s is a directory", filename)
 	}
-	defer jsonFile.Close()
 
-	byteValue, err := io.ReadAll(jsonFile)
+	file, err := os.Open(filename)
 	if err != nil {
-		return nil, fmt.Errorf("error reading file %s: %v", inputFile, err)
+		return nil, err
+	}
+	defer file.Close()
+
+	byteValue, err := io.ReadAll(file)
+	if err != nil {
+		return nil, err
 	}
 
 	byteValue = removeBOM(byteValue)
@@ -155,7 +163,7 @@ func parseInputFile(inputFile string) ([]Item, error) {
 	var items Items
 	err = json.Unmarshal(byteValue, &items)
 	if err != nil {
-		return nil, fmt.Errorf("error unmarshaling JSON: %v", err)
+		return nil, err
 	}
 
 	return items.Items, nil
@@ -217,7 +225,6 @@ func processItems(filename string, items []Item) error {
 				select {
 				case <-jobInfo.ResumeChan:
 					jobInfo.Paused = false
-					fmt.Printf("Resuming download for %s\n", filename)
 				case <-jobInfo.AbortChan:
 					updateProgress(filename, 100, "Aborted")
 					return fmt.Errorf("download aborted")
@@ -231,7 +238,6 @@ func processItems(filename string, items []Item) error {
 					i--
 					continue
 				}
-				fmt.Printf("Error downloading file: %v\n", err)
 			}
 		}
 	}