Hm

Reviewed-on: #5

README.md

@@ -9,6 +9,7 @@ Create a `config.toml` file in the same directory as the drmdtool executable:
 ```toml
 BaseDir = "/path/to/save/downloads"
 Format = "mkv"
+TempBaseDir = "/tmp/nre"
 
 [N_m3u8DL-RE]
 Path = "/path/to/N_m3u8DL-RE"
@@ -36,10 +37,4 @@ To process a file directly from the command line:
 ./drmdtool -f /path/to/file.drmd
 ```
 
-This will download the file and save it in the base directory specified in the config.
+This will download the file and save it in the base directory specified in the config.
-
-## TODO
-- ~~Filename Sanitation (Makes new directory on /... oops)~~
-- ~~GoPlay Fix~~
-- Windows?
-- Proper UI?

config.go

@@ -9,9 +9,10 @@ import (
 )
 
 type Config struct {
-	BaseDir    string
+	BaseDir     string
-	Format     string
+	Format      string
-	N_m3u8DLRE struct {
+	TempBaseDir string
+	N_m3u8DLRE  struct {
 		Path string
 	}
 }

config.toml

@@ -1,5 +1,6 @@
 BaseDir = "/mnt/media"
 Format = "mkv" 
+TempBaseDir = "/tmp/nre"
 
 [N_m3u8DLRE]
 Path = "nre"

downloaders.go

@@ -18,9 +18,17 @@ func removeBOM(input []byte) []byte {
 	return input
 }
 
-func downloadFile(item Item) error {
+func downloadFile(item Item, jobInfo *JobInfo) error {
 	fmt.Println("Downloading:", item.Filename)
 
+	tempDir := filepath.Join(config.TempBaseDir, sanitizeFilename(item.Filename))
+	err := os.MkdirAll(tempDir, 0755)
+	if err != nil {
+		return fmt.Errorf("error creating temporary directory: %v", err)
+	}
+
+	jobInfo.TempDir = tempDir
+
 	mpdPath := item.MPD
 	if !isValidURL(item.MPD) {
 		decodedMPD, err := base64.StdEncoding.DecodeString(item.MPD)
@@ -75,7 +83,7 @@ func downloadFile(item Item) error {
 		mpdPath = tempFile.Name()
 	}
 
-	command := getDownloadCommand(item, mpdPath)
+	command := getDownloadCommand(item, mpdPath, tempDir)
 
 	if item.Subtitles != "" {
 		subtitlePaths, err := downloadAndConvertSubtitles(item.Subtitles)
@@ -91,19 +99,45 @@ func downloadFile(item Item) error {
 
 	cmd := exec.Command("bash", "-c", command)
 
+	jobsMutex.Lock()
+	jobInfo.Cmd = cmd
+	jobsMutex.Unlock()
+
 	cmd.Stdout = os.Stdout
 	cmd.Stderr = os.Stderr
 
-	err := cmd.Run()
+	err = cmd.Start()
 	if err != nil {
-		return fmt.Errorf("error executing download command: %v", err)
+		return fmt.Errorf("error starting download command: %v", err)
+	}
+
+	done := make(chan error)
+	go func() {
+		done <- cmd.Wait()
+	}()
+
+	select {
+	case <-jobInfo.AbortChan:
+		if cmd.Process != nil {
+			cmd.Process.Kill()
+		}
+		os.RemoveAll(tempDir)
+		return fmt.Errorf("download aborted")
+	case err := <-done:
+		if jobInfo.Paused {
+			return fmt.Errorf("download paused")
+		}
+		if err != nil {
+			return fmt.Errorf("error executing download command: %v", err)
+		}
 	}
 
 	fmt.Println("Download completed successfully")
+	os.RemoveAll(tempDir)
 	return nil
 }
 
-func getDownloadCommand(item Item, mpdPath string) string {
+func getDownloadCommand(item Item, mpdPath string, tempDir string) string {
 	metadata := parseMetadata(item.Metadata)
 	keys := getKeys(item.Keys)
 
@@ -132,6 +166,8 @@ func getDownloadCommand(item Item, mpdPath string) string {
 	}
 	command += fmt.Sprintf(" --save-dir \"%s\"", saveDir)
 
+	command += fmt.Sprintf(" --tmp-dir \"%s\"", tempDir)
+
 	fmt.Println(command)
 
 	return command

go.sum

@@ -10,6 +10,8 @@ github.com/beevik/etree v1.4.1 h1:PmQJDDYahBGNKDcpdX8uPy1xRCwoCGVUiW669MEirVI=
 github.com/beevik/etree v1.4.1/go.mod h1:gPNJNaBGVZ9AwsidazFZyygnd+0pAU38N4D+WemwKNs=
 github.com/davecgh/go-spew v1.1.0 h1:ZDRjVQ15GmhC3fiQ8ni8+OwkZQO4DARzQgrnXU1Liz8=
 github.com/davecgh/go-spew v1.1.0/go.mod h1:J7Y8YcW2NihsgmVo/mv3lAwl/skON4iLHjSsI+c5H38=
+github.com/pkg/exec v0.0.0-20150614095509-0bd164ad2a5a h1:EN123kAtAAE2pg/+TvBsUBZfHCWNNFyL2ZBPPfNWAc0=
+github.com/pkg/exec v0.0.0-20150614095509-0bd164ad2a5a/go.mod h1:b95YoNrAnScjaWG+asr8lxqlrsPUcT2ZEBcjvVGshMo=
 github.com/pkg/profile v1.4.0/go.mod h1:NWz/XGvpEW1FyYQ7fCx4dqYBLlfTcE+A9FLAkNKqjFE=
 github.com/pmezard/go-difflib v1.0.0 h1:4DBwDE0NGyQoBHbLQYPwSUPoCMWR5BEzIk/f1lZbAQM=
 github.com/pmezard/go-difflib v1.0.0/go.mod h1:iKH77koFhYxTK1pcRnkKkqfTogsbg7gZNVY4sRDYZ/4=

handlers.go

@@ -5,77 +5,148 @@ import (
 	"fmt"
 	"io"
 	"net/http"
+	"net/url"
 	"os"
 	"path/filepath"
+	"strings"
 )
 
+type ProgressInfo struct {
+	Percentage  float64
+	CurrentFile string
+	Paused      bool
+}
+
 func handleRoot(w http.ResponseWriter, r *http.Request) {
-	if r.URL.Path != "/" {
-		http.NotFound(w, r)
-		return
-	}
-
 	progressMutex.Lock()
-	jobs := make(map[string]*ProgressInfo)
+	defer progressMutex.Unlock()
-	for k, v := range progress {
-		jobs[k] = v
-	}
-	progressMutex.Unlock()
 
-	err := templates.ExecuteTemplate(w, "index", struct{ Jobs map[string]*ProgressInfo }{jobs})
+	jobsInfo := make(map[string]struct {
+		Percentage  float64
+		CurrentFile string
+		Paused      bool
+	})
+
+	for filename, info := range progress {
+		jobsInfo[filename] = struct {
+			Percentage  float64
+			CurrentFile string
+			Paused      bool
+		}{
+			Percentage:  info.Percentage,
+			CurrentFile: info.CurrentFile,
+			Paused:      info.Paused,
+		}
+	}
+
+	err := templates.ExecuteTemplate(w, "index", struct {
+		Jobs map[string]struct {
+			Percentage  float64
+			CurrentFile string
+			Paused      bool
+		}
+	}{jobsInfo})
 	if err != nil {
 		http.Error(w, err.Error(), http.StatusInternalServerError)
 	}
 }
 
 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)
+	files := r.MultipartForm.File["files"]
-	if err != nil {
+	if len(files) == 0 {
-		http.Error(w, err.Error(), http.StatusInternalServerError)
+		http.Error(w, "No files uploaded", http.StatusBadRequest)
-		return
-	}
-	defer tempFile.Close()
-
-	_, err = io.Copy(tempFile, file)
-	if err != nil {
-		http.Error(w, err.Error(), http.StatusInternalServerError)
 		return
 	}
 
-	tempFilename := filepath.Base(tempFile.Name())
+	uploadedFiles := []string{}
 
-	_, err = parseInputFile(tempFile.Name())
+	for _, fileHeader := range files {
-	if err != nil {
+		file, err := fileHeader.Open()
-		http.Error(w, err.Error(), http.StatusInternalServerError)
+		if err != nil {
+			http.Error(w, err.Error(), http.StatusInternalServerError)
+			return
+		}
+		defer file.Close()
+
+		tempFile, err := os.CreateTemp(uploadDir, fileHeader.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)
+			return
+		}
+
+		uploadedFiles = append(uploadedFiles, filepath.Base(tempFile.Name()))
+
+		_, err = parseInputFile(tempFile.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")
+	filesParam := r.URL.Query().Get("files")
-	items, err := parseInputFile(filepath.Join(uploadDir, filename))
+	filenames := strings.Split(filesParam, ",")
-	if err != nil {
+
-		http.Error(w, err.Error(), http.StatusInternalServerError)
+	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 {
-
+		Filenames string
-	err = templates.ExecuteTemplate(w, "select", struct {
+		AllItems  map[string]map[string][]Item
-		Filename string
-		Items    map[string][]Item
 	}{
-		Filename: filename,
+		Filenames: filesParam,
-		Items:    groupedItems,
+		AllItems:  allItems,
 	})
 	if err != nil {
 		http.Error(w, err.Error(), http.StatusInternalServerError)
@@ -83,36 +154,47 @@ func handleSelect(w http.ResponseWriter, r *http.Request) {
 }
 
 func handleProcess(w http.ResponseWriter, r *http.Request) {
-	filename := r.FormValue("filename")
+	if err := r.ParseForm(); err != nil {
-	selectedItems := r.Form["items"]
+		http.Error(w, err.Error(), http.StatusBadRequest)
-
-	items, err := parseInputFile(filepath.Join(uploadDir, filename))
-	if err != nil {
-		http.Error(w, err.Error(), http.StatusInternalServerError)
 		return
 	}
 
-	filteredItems := filterSelectedItems(items, selectedItems)
+	selectedItems := r.Form["items"]
+	if len(selectedItems) == 0 {
+		http.Error(w, "No items selected", http.StatusBadRequest)
+		return
+	}
 
-	go func() {
+	itemsByFile := make(map[string][]string)
-		err := processItems(filename, filteredItems)
+	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)
@@ -123,7 +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
 		}
@@ -135,3 +216,138 @@ func handleProgress(w http.ResponseWriter, r *http.Request) {
 		http.Error(w, err.Error(), http.StatusInternalServerError)
 	}
 }
+
+func handlePause(w http.ResponseWriter, r *http.Request) {
+	filename := r.URL.Query().Get("filename")
+	if filename == "" {
+		http.Error(w, "Filename is required", http.StatusBadRequest)
+		return
+	}
+
+	jobsMutex.Lock()
+	jobInfo, exists := jobs[filename]
+	jobsMutex.Unlock()
+
+	if !exists {
+		http.Error(w, "Job not found", http.StatusNotFound)
+		return
+	}
+
+	jobInfo.Paused = true
+	if jobInfo.Cmd != nil && jobInfo.Cmd.Process != nil {
+		jobInfo.Cmd.Process.Kill()
+	}
+
+	progressMutex.Lock()
+	if progressInfo, ok := progress[filename]; ok {
+		progressInfo.Paused = true
+	}
+	progressMutex.Unlock()
+
+	fmt.Fprintf(w, "Pause signal sent for %s", filename)
+}
+
+func handleResume(w http.ResponseWriter, r *http.Request) {
+	filename := r.URL.Query().Get("filename")
+	if filename == "" {
+		http.Error(w, "Filename is required", http.StatusBadRequest)
+		return
+	}
+
+	jobsMutex.Lock()
+	jobInfo, exists := jobs[filename]
+	jobsMutex.Unlock()
+
+	if !exists {
+		http.Error(w, "Job not found", http.StatusNotFound)
+		return
+	}
+
+	jobInfo.Paused = false
+	jobInfo.ResumeChan <- struct{}{}
+
+	progressMutex.Lock()
+	if progressInfo, ok := progress[filename]; ok {
+		progressInfo.Paused = false
+	}
+	progressMutex.Unlock()
+
+	fmt.Fprintf(w, "Resume signal sent for %s", filename)
+}
+
+func handleAbort(w http.ResponseWriter, r *http.Request) {
+	filename := r.URL.Query().Get("filename")
+	if filename == "" {
+		http.Error(w, "Filename is required", http.StatusBadRequest)
+		return
+	}
+
+	jobsMutex.Lock()
+	jobInfo, exists := jobs[filename]
+	jobsMutex.Unlock()
+
+	if !exists {
+		http.Error(w, "Job not found", http.StatusNotFound)
+		return
+	}
+
+	close(jobInfo.AbortChan)
+	if jobInfo.Cmd != nil && jobInfo.Cmd.Process != nil {
+		jobInfo.Cmd.Process.Kill()
+	}
+
+	if jobInfo.TempDir != "" {
+		os.RemoveAll(jobInfo.TempDir)
+	}
+
+	fmt.Fprintf(w, "Abort signal sent for %s", filename)
+}
+
+func handleClearCompleted(w http.ResponseWriter, r *http.Request) {
+	if r.Method != http.MethodPost {
+		http.Error(w, "Method not allowed", http.StatusMethodNotAllowed)
+		return
+	}
+
+	clearCompletedJobs()
+
+	w.Header().Set("Content-Type", "application/json")
+	json.NewEncoder(w).Encode(map[string]bool{"success": true})
+}
+
+func clearCompletedJobs() {
+	progressMutex.Lock()
+	defer progressMutex.Unlock()
+
+	for filename, info := range progress {
+		if info.Percentage >= 100 {
+			delete(progress, filename)
+		}
+	}
+}
+
+func updateProgress(filename string, value float64, currentFile string) {
+	progressMutex.Lock()
+	defer progressMutex.Unlock()
+
+	jobsMutex.Lock()
+	jobInfo, exists := jobs[filename]
+	jobsMutex.Unlock()
+
+	paused := false
+	if exists {
+		paused = jobInfo.Paused
+	}
+
+	if existingProgress, ok := progress[filename]; ok {
+		existingProgress.Percentage = value
+		existingProgress.CurrentFile = currentFile
+		existingProgress.Paused = paused
+	} else {
+		progress[filename] = &ProgressInfo{
+			Percentage:  value,
+			CurrentFile: currentFile,
+			Paused:      paused,
+		}
+	}
+}

main.go

@@ -37,11 +37,6 @@ var progress = make(map[string]*ProgressInfo)
 
 const uploadDir = "uploads"
 
-type ProgressInfo struct {
-	Percentage  float64
-	CurrentFile string
-}
-
 var templates *template.Template
 
 //go:embed templates
@@ -78,21 +73,15 @@ func startWebServer() {
 	http.HandleFunc("/select", handleSelect)
 	http.HandleFunc("/process", handleProcess)
 	http.HandleFunc("/progress", handleProgress)
+	http.HandleFunc("/abort", handleAbort)
+	http.HandleFunc("/pause", handlePause)
+	http.HandleFunc("/resume", handleResume)
+	http.HandleFunc("/clear-completed", handleClearCompleted)
 
 	fmt.Println("Starting web server on http://0.0.0.0:8080")
 	http.ListenAndServe(":8080", nil)
 }
 
-func updateProgress(filename string, value float64, currentFile string) {
-	progressMutex.Lock()
-	defer progressMutex.Unlock()
-	progress[filename] = &ProgressInfo{
-		Percentage:  value,
-		CurrentFile: currentFile,
-	}
-	fmt.Printf("Progress updated for %s: %.2f%%, Current file: %s\n", filename, value, currentFile)
-}
-
 func getProgress(filename string) *ProgressInfo {
 	progressMutex.Lock()
 	defer progressMutex.Unlock()

templates/index

@@ -45,6 +45,7 @@
         ul {
             list-style-type: none;
             padding: 0;
+            margin-bottom: 10px; 
         }
         li {
             background-color: #2d2d2d;
@@ -73,6 +74,9 @@
             display: inline-block;
             width: 5em;
         }
+        .paused {
+            color: #ffa500;
+        }
         @media (max-width: 600px) {
             body {
                 padding: 10px;
@@ -83,13 +87,32 @@
             input[type="file"], input[type="submit"] {
                 font-size: 16px;
             }
+            input[type="submit"], #clear-completed {
+                font-size: 16px;
+            }
+        }
+        input[type="submit"], #clear-completed {
+            cursor: pointer;
+            color: white;
+            border: 1px solid #444;
+            padding: 8px 12px;
+            border-radius: 4px;
+            margin-bottom: 10px;
+            max-width: 100%;
+            width: 100%;
+        }
+        #clear-completed {
+            background-color: #f44336;
+        }
+        #clear-completed:hover {
+            background-color: #d32f2f;
         }
     </style>
 </head>
 <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>
@@ -100,12 +123,30 @@
                     <a href="/progress?filename={{$filename}}">{{$filename}}</a>
                 </div>
                 <div class="job-info">
-                    Progress: <span class="progress-text">{{printf "%5.1f%%" $info.Percentage}}</span> Current file: {{$info.CurrentFile}}
+                    Progress: <span class="progress-text">{{printf "%5.1f%%" $info.Percentage}}</span>
+                    Current file: {{$info.CurrentFile}}
+                    {{if $info.Paused}}
+                        <span class="paused">(Paused)</span>
+                    {{end}}
                 </div>
             </li>
         {{else}}
             <li>No active jobs</li>
         {{end}}
     </ul>
+    <button id="clear-completed" onclick="clearCompleted()">Clear Completed Jobs</button>
+    <script>
+        function clearCompleted() {
+            fetch('/clear-completed', { method: 'POST' })
+                .then(response => response.json())
+                .then(data => {
+                    if (data.success) {
+                        location.reload();
+                    } else {
+                        alert('Failed to clear completed jobs');
+                    }
+                });
+        }
+    </script>
 </body>
 </html>

templates/progress

@@ -56,6 +56,46 @@
             margin-top: 10px;
             word-wrap: break-word;
         }
+        #abort-button {
+            background-color: #f44336;
+            color: white;
+            border: none;
+            padding: 10px 15px;
+            margin-top: 10px;
+            border-radius: 4px;
+            cursor: pointer;
+        }
+        #abort-button:hover {
+            background-color: #d32f2f;
+        }
+        #pause-button, #resume-button {
+            background-color: #4CAF50;
+            color: white;
+            border: none;
+            padding: 10px 15px;
+            margin-top: 10px;
+            border-radius: 4px;
+            cursor: pointer;
+        }
+        #pause-button:hover, #resume-button:hover {
+            background-color: #45a049;
+        }
+        #resume-button {
+            display: none;
+        }
+        #back-button {
+            background-color: #2196F3;
+            color: white;
+            border: none;
+            padding: 10px 15px;
+            margin-top: 10px;
+            border-radius: 4px;
+            cursor: pointer;
+            float: right;
+        }
+        #back-button:hover {
+            background-color: #1976D2;
+        }
         @media (max-width: 600px) {
             body {
                 padding: 10px;
@@ -84,7 +124,15 @@
         </div>
         <div id="currentFile"></div>
     </div>
+    <div>
+        <button id="abort-button" onclick="abortDownload()">Abort Download</button>
+        <button id="pause-button" onclick="pauseDownload()">Pause Download</button>
+        <button id="resume-button" onclick="resumeDownload()" style="display: none;">Resume Download</button>
+        <button id="back-button" onclick="window.location.href='/'">Back to Index</button>
+    </div>
     <script>
+        let isPaused = false;
+
         function updateProgress() {
             fetch('/progress?filename={{.Filename}}', {
                 headers: {
@@ -97,11 +145,64 @@
                     document.getElementById('progress-bar').style.width = progress + '%';
                     document.getElementById('progress-text').innerText = progress + '%';
                     document.getElementById('currentFile').innerText = 'Current file: ' + (data.CurrentFile || 'None');
-                    if (progress < 100) {
+                    
+                    isPaused = data.Paused;
+                    updatePauseResumeButtons();
+                    
+                    if (progress < 100 && !isPaused) {
                         setTimeout(updateProgress, 1000);
                     }
                 });
         }
+
+        function updatePauseResumeButtons() {
+            if (isPaused) {
+                document.getElementById('pause-button').style.display = 'none';
+                document.getElementById('resume-button').style.display = 'inline-block';
+            } else {
+                document.getElementById('pause-button').style.display = 'inline-block';
+                document.getElementById('resume-button').style.display = 'none';
+            }
+        }
+
+        function abortDownload() {
+            fetch('/abort?filename={{.Filename}}', { method: 'POST' })
+                .then(response => {
+                    if (response.ok) {
+                        console.log('Abort signal sent. The download will stop soon.');
+                    } else {
+                        alert('Failed to abort the download.');
+                    }
+                });
+        }
+
+        function pauseDownload() {
+            fetch('/pause?filename={{.Filename}}', { method: 'POST' })
+                .then(response => {
+                    if (response.ok) {
+                        console.log('Pause signal sent. The download will pause soon.');
+                        isPaused = true;
+                        updatePauseResumeButtons();
+                    } else {
+                        alert('Failed to pause the download.');
+                    }
+                });
+        }
+
+        function resumeDownload() {
+            fetch('/resume?filename={{.Filename}}', { method: 'POST' })
+                .then(response => {
+                    if (response.ok) {
+                        console.log('Resume signal sent. The download will resume soon.');
+                        isPaused = false;
+                        updatePauseResumeButtons();
+                        updateProgress();
+                    } else {
+                        alert('Failed to resume the download.');
+                    }
+                });
+        }
+
         updateProgress();
     </script>
 </body>

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}}">
+        <input type="hidden" name="filenames" value="{{.Filenames}}">
-        {{range $season, $items := .Items}}
+        {{range $filename, $fileItems := .AllItems}}
-            <div class="season">
+            <h2>{{$filename}}</h2>
-                <div class="season-title">
+            {{range $season, $items := $fileItems}}
-                    <input type="checkbox" class="season-checkbox" id="season-{{$season}}" checked onchange="toggleSeason('{{$season}}')">
+                <div class="season">
-                    <label for="season-{{$season}}">{{$season}}</label>
+                    <div class="season-title">
-                </div>
+                        <input type="checkbox" class="season-checkbox" id="season-{{$filename}}-{{$season}}" checked onchange="toggleSeason('{{$filename}}-{{$season}}')">
-                {{range $item := $items}}
+                        <label for="season-{{$filename}}-{{$season}}">{{$season}}</label>
-                    <div class="item">
-                        <label>
-                            <input type="checkbox" name="items" value="{{$item.Filename}}" checked class="episode-{{$season}}">
-                            {{$item.Filename}}
-                        </label>
                     </div>
-                {{end}}
+                    {{range $item := $items}}
-            </div>
+                        <div class="item">
+                            <label>
+                                <input type="checkbox" name="items" value="{{$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

@@ -6,13 +6,29 @@ import (
 	"io"
 	"net/url"
 	"os"
+	"os/exec"
+	"path/filepath"
 	"regexp"
 	"strconv"
 	"strings"
+	"sync"
 
 	"github.com/beevik/etree"
 )
 
+type JobInfo struct {
+	AbortChan  chan struct{}
+	ResumeChan chan struct{}
+	Cmd        *exec.Cmd
+	Paused     bool
+	TempDir    string
+}
+
+var (
+	jobsMutex sync.Mutex
+	jobs      = make(map[string]*JobInfo)
+)
+
 func sanitizeFilename(filename string) string {
 	filename = regexp.MustCompile(`[<>:"/\\|?*]`).ReplaceAllString(filename, "_")
 
@@ -122,16 +138,24 @@ func findOrCreateSegmentTimeline(adaptationSet *etree.Element) *etree.Element {
 	return segmentTemplate.CreateElement("SegmentTimeline")
 }
 
-func parseInputFile(inputFile string) ([]Item, error) {
+func parseInputFile(filename string) ([]Item, error) {
-	jsonFile, err := os.Open(inputFile)
+	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)
@@ -139,7 +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
@@ -173,13 +197,94 @@ func filterSelectedItems(items []Item, selectedItems []string) []Item {
 }
 
 func processItems(filename string, items []Item) error {
-	for i, item := range items {
+	jobsMutex.Lock()
-		updateProgress(filename, float64(i)/float64(len(items))*100, item.Filename)
+	jobInfo := &JobInfo{
-		err := downloadFile(item)
+		AbortChan:  make(chan struct{}),
-		if err != nil {
+		ResumeChan: make(chan struct{}),
-			fmt.Printf("Error downloading file: %v\n", err)
+	}
+	jobs[filename] = jobInfo
+	jobsMutex.Unlock()
+
+	defer func() {
+		jobsMutex.Lock()
+		delete(jobs, filename)
+		jobsMutex.Unlock()
+
+		if jobInfo.TempDir != "" {
+			os.RemoveAll(jobInfo.TempDir)
+		}
+	}()
+
+	for i := 0; i < len(items); i++ {
+		select {
+		case <-jobInfo.AbortChan:
+			updateProgress(filename, 100, "Aborted")
+			return fmt.Errorf("download aborted")
+		default:
+			if jobInfo.Paused {
+				select {
+				case <-jobInfo.ResumeChan:
+					jobInfo.Paused = false
+				case <-jobInfo.AbortChan:
+					updateProgress(filename, 100, "Aborted")
+					return fmt.Errorf("download aborted")
+				}
+			}
+			updateProgress(filename, float64(i)/float64(len(items))*100, items[i].Filename)
+			err := downloadFile(items[i], jobInfo)
+			if err != nil {
+				if err.Error() == "download paused" {
+					removeCompletedEpisodes(filename, items[:i])
+					i--
+					continue
+				}
+			}
 		}
 	}
 	updateProgress(filename, 100, "")
 	return nil
 }
+
+func removeCompletedEpisodes(filename string, completedItems []Item) error {
+	inputFile := filepath.Join(uploadDir, filename)
+	items, err := parseInputFile(inputFile)
+	if err != nil {
+		return fmt.Errorf("error parsing input file: %v", err)
+	}
+
+	remainingItems := make([]Item, 0)
+	for _, item := range items {
+		if !isItemCompleted(item, completedItems) || isLastCompletedItem(item, completedItems) {
+			remainingItems = append(remainingItems, item)
+		}
+	}
+
+	updatedItems := Items{Items: remainingItems}
+	jsonData, err := json.MarshalIndent(updatedItems, "", "  ")
+	if err != nil {
+		return fmt.Errorf("error marshaling updated items: %v", err)
+	}
+
+	err = os.WriteFile(inputFile, jsonData, 0644)
+	if err != nil {
+		return fmt.Errorf("error writing updated DRMD file: %v", err)
+	}
+
+	return nil
+}
+
+func isItemCompleted(item Item, completedItems []Item) bool {
+	for _, completedItem := range completedItems {
+		if item.Filename == completedItem.Filename {
+			return true
+		}
+	}
+	return false
+}
+
+func isLastCompletedItem(item Item, completedItems []Item) bool {
+	if len(completedItems) == 0 {
+		return false
+	}
+	return item.Filename == completedItems[len(completedItems)-1].Filename
+}